New subject: [U-Boot] [PATCH 1/1] drivers: i2c: Add brcm iproc I2C driver support

22 Nov 2019

From: Arjun Jyothi arjun.jyothi@broadcom.com
Add I2C driver support for Broadcom iproc-based socs.
Signed-off-by: Arjun Jyothi arjun.jyothi@broadcom.com
Signed-off-by: Rayagonda Kokatanur rayagonda.kokatanur@broadcom.com
Signed-off-by: Sheetal Tigadoli sheetal.tigadoli@broadcom.com
Signed-off-by: Vladimir Olovyannikov vladimir.olovyannikov@broadcom.com
---
 drivers/i2c/Kconfig     | 623 ++++++++++++++++----------------
 drivers/i2c/Makefile    |   2 +-
 drivers/i2c/iproc_i2c.c | 765 ++++++++++++++++++++++++++++++++++++++++
 drivers/i2c/iproc_i2c.h | 356 +++++++++++++++++++
 4 files changed, 1437 insertions(+), 309 deletions(-)
 create mode 100644 drivers/i2c/iproc_i2c.c
 create mode 100644 drivers/i2c/iproc_i2c.h

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 03d2fed341..7a80971b12 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -5,454 +5,461 @@
 menu "I2C support"
config DM_I2C
-	bool "Enable Driver Model for I2C drivers"
-	depends on DM
-	help
-	  Enable driver model for I2C. The I2C uclass interface: probe, read,
-	  write and speed, is implemented with the bus drivers operations,
-	  which provide methods for bus setting and data transfer. Each chip
-	  device (bus child) info is kept as parent platdata. The interface
-	  is defined in include/i2c.h.
+    bool "Enable Driver Model for I2C drivers"
+    depends on DM
+    help
+      Enable driver model for I2C. The I2C uclass interface: probe, read,
+      write and speed, is implemented with the bus drivers operations,
+      which provide methods for bus setting and data transfer. Each chip
+      device (bus child) info is kept as parent platdata. The interface
+      is defined in include/i2c.h.
config I2C_CROS_EC_TUNNEL
-	tristate "Chrome OS EC tunnel I2C bus"
-	depends on CROS_EC
-	help
-	  This provides an I2C bus that will tunnel i2c commands through to
-	  the other side of the Chrome OS EC to the I2C bus connected there.
-	  This will work whatever the interface used to talk to the EC (SPI,
-	  I2C or LPC). Some Chromebooks use this when the hardware design
-	  does not allow direct access to the main PMIC from the AP.
+    tristate "Chrome OS EC tunnel I2C bus"
+    depends on CROS_EC
+    help
+      This provides an I2C bus that will tunnel i2c commands through to
+      the other side of the Chrome OS EC to the I2C bus connected there.
+      This will work whatever the interface used to talk to the EC (SPI,
+      I2C or LPC). Some Chromebooks use this when the hardware design
+      does not allow direct access to the main PMIC from the AP.
config I2C_CROS_EC_LDO
-	bool "Provide access to LDOs on the Chrome OS EC"
-	depends on CROS_EC
-	---help---
-	On many Chromebooks the main PMIC is inaccessible to the AP. This is
-	often dealt with by using an I2C pass-through interface provided by
-	the EC. On some unfortunate models (e.g. Spring) the pass-through
-	is not available, and an LDO message is available instead. This
-	option enables a driver which provides very basic access to those
-	regulators, via the EC. We implement this as an I2C bus	which
-	emulates just the TPS65090 messages we know about. This is done to
-	avoid duplicating the logic in the TPS65090 regulator driver for
-	enabling/disabling an LDO.
+    bool "Provide access to LDOs on the Chrome OS EC"
+    depends on CROS_EC
+    ---help---
+    On many Chromebooks the main PMIC is inaccessible to the AP. This is
+    often dealt with by using an I2C pass-through interface provided by
+    the EC. On some unfortunate models (e.g. Spring) the pass-through
+    is not available, and an LDO message is available instead. This
+    option enables a driver which provides very basic access to those
+    regulators, via the EC. We implement this as an I2C bus which
+    emulates just the TPS65090 messages we know about. This is done to
+    avoid duplicating the logic in the TPS65090 regulator driver for
+    enabling/disabling an LDO.
config I2C_SET_DEFAULT_BUS_NUM
-	bool "Set default I2C bus number"
-	depends on DM_I2C
-	help
-	  Set default number of I2C bus to be accessed. This option provides
-	  behaviour similar to old (i.e. pre DM) I2C bus driver.
+    bool "Set default I2C bus number"
+    depends on DM_I2C
+    help
+      Set default number of I2C bus to be accessed. This option provides
+      behaviour similar to old (i.e. pre DM) I2C bus driver.
config I2C_DEFAULT_BUS_NUMBER
-	hex "I2C default bus number"
-	depends on I2C_SET_DEFAULT_BUS_NUM
-	default 0x0
-	help
-	  Number of default I2C bus to use
+    hex "I2C default bus number"
+    depends on I2C_SET_DEFAULT_BUS_NUM
+    default 0x0
+    help
+      Number of default I2C bus to use
config DM_I2C_GPIO
-	bool "Enable Driver Model for software emulated I2C bus driver"
-	depends on DM_I2C && DM_GPIO
-	help
-	  Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO
-	  configuration is given by the device tree. Kernel-style device tree
-	  bindings are supported.
-	  Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt
+    bool "Enable Driver Model for software emulated I2C bus driver"
+    depends on DM_I2C && DM_GPIO
+    help
+      Enable the i2c bus driver emulation by using the GPIOs. The bus GPIO
+      configuration is given by the device tree. Kernel-style device tree
+      bindings are supported.
+      Binding info: doc/device-tree-bindings/i2c/i2c-gpio.txt
config SYS_I2C_AT91
-	bool "Atmel I2C driver"
-	depends on DM_I2C && ARCH_AT91
-	help
-	  Add support for the Atmel I2C driver. A serious problem is that there
-	  is no documented way to issue repeated START conditions for more than
-	  two messages, as needed to support combined I2C messages. Use the
-	  i2c-gpio driver unless your system can cope with this limitation.
-	  Binding info: doc/device-tree-bindings/i2c/i2c-at91.txt
+    bool "Atmel I2C driver"
+    depends on DM_I2C && ARCH_AT91
+    help
+      Add support for the Atmel I2C driver. A serious problem is that there
+      is no documented way to issue repeated START conditions for more than
+      two messages, as needed to support combined I2C messages. Use the
+      i2c-gpio driver unless your system can cope with this limitation.
+      Binding info: doc/device-tree-bindings/i2c/i2c-at91.txt
+
+config IPROC_I2C
+       bool "Broadcom iProc I2C driver"
+       depends on DM_I2C
+       help
+       Add support for Broadcom iProc I2C driver.
+       The driver is used in iProc SoCs.
config SYS_I2C_FSL
        bool "Freescale I2C bus driver"
        depends on DM_I2C
        help
-	  Add support for Freescale I2C busses as used on MPC8240, MPC8245, and
-	  MPC85xx processors.
+      Add support for Freescale I2C busses as used on MPC8240, MPC8245, and
+      MPC85xx processors.
config SYS_I2C_CADENCE
-	tristate "Cadence I2C Controller"
-	depends on DM_I2C && (ARCH_ZYNQ || ARM64)
-	help
-	  Say yes here to select Cadence I2C Host Controller. This controller is
-	  e.g. used by Xilinx Zynq.
+    tristate "Cadence I2C Controller"
+    depends on DM_I2C && (ARCH_ZYNQ || ARM64)
+    help
+      Say yes here to select Cadence I2C Host Controller. This controller is
+      e.g. used by Xilinx Zynq.
config SYS_I2C_DAVINCI
-	bool "Davinci I2C Controller"
-	depends on (ARCH_KEYSTONE || ARCH_DAVINCI)
-	help
-	  Say yes here to add support for Davinci and Keystone I2C controller
+    bool "Davinci I2C Controller"
+    depends on (ARCH_KEYSTONE || ARCH_DAVINCI)
+    help
+      Say yes here to add support for Davinci and Keystone I2C controller
config SYS_I2C_DW
-	bool "Designware I2C Controller"
-	default n
-	help
-	  Say yes here to select the Designware I2C Host Controller. This
-	  controller is used in various SoCs, e.g. the ST SPEAr, Altera
-	  SoCFPGA, Synopsys ARC700 and some Intel x86 SoCs.
+    bool "Designware I2C Controller"
+    default n
+    help
+      Say yes here to select the Designware I2C Host Controller. This
+      controller is used in various SoCs, e.g. the ST SPEAr, Altera
+      SoCFPGA, Synopsys ARC700 and some Intel x86 SoCs.
config SYS_I2C_DW_ENABLE_STATUS_UNSUPPORTED
-	bool "DW I2C Enable Status Register not supported"
-	depends on SYS_I2C_DW && (TARGET_SPEAR300 || TARGET_SPEAR310 || \
-		TARGET_SPEAR320 || TARGET_SPEAR600 || TARGET_X600)
-	default y
-	help
-	  Some versions of the Designware I2C controller do not support the
-	  enable status register. This config option can be enabled in such
-	  cases.
+    bool "DW I2C Enable Status Register not supported"
+    depends on SYS_I2C_DW && (TARGET_SPEAR300 || TARGET_SPEAR310 || \
+        TARGET_SPEAR320 || TARGET_SPEAR600 || TARGET_X600)
+    default y
+    help
+      Some versions of the Designware I2C controller do not support the
+      enable status register. This config option can be enabled in such
+      cases.
config SYS_I2C_ASPEED
-	bool "Aspeed I2C Controller"
-	depends on DM_I2C && ARCH_ASPEED
-	help
-	  Say yes here to select Aspeed I2C Host Controller. The driver
-	  supports AST2500 and AST2400 controllers, but is very limited.
-	  Only single master mode is supported and only byte-by-byte
-	  synchronous reads and writes are supported, no Pool Buffers or DMA.
+    bool "Aspeed I2C Controller"
+    depends on DM_I2C && ARCH_ASPEED
+    help
+      Say yes here to select Aspeed I2C Host Controller. The driver
+      supports AST2500 and AST2400 controllers, but is very limited.
+      Only single master mode is supported and only byte-by-byte
+      synchronous reads and writes are supported, no Pool Buffers or DMA.
config SYS_I2C_INTEL
-	bool "Intel I2C/SMBUS driver"
-	depends on DM_I2C
-	help
-	  Add support for the Intel SMBUS driver. So far this driver is just
-	  a stub which perhaps some basic init. There is no implementation of
-	  the I2C API meaning that any I2C operations will immediately fail
-	  for now.
+    bool "Intel I2C/SMBUS driver"
+    depends on DM_I2C
+    help
+      Add support for the Intel SMBUS driver. So far this driver is just
+      a stub which perhaps some basic init. There is no implementation of
+      the I2C API meaning that any I2C operations will immediately fail
+      for now.
config SYS_I2C_IMX_LPI2C
-	bool "NXP i.MX LPI2C driver"
-	help
-	  Add support for the NXP i.MX LPI2C driver.
+    bool "NXP i.MX LPI2C driver"
+    help
+      Add support for the NXP i.MX LPI2C driver.
config SYS_I2C_MESON
-	bool "Amlogic Meson I2C driver"
-	depends on DM_I2C && ARCH_MESON
-	help
-	  Add support for the I2C controller available in Amlogic Meson
-	  SoCs. The controller supports programmable bus speed including
-	  standard (100kbits/s) and fast (400kbit/s) speed and allows the
-	  software to define a flexible format of the bit streams. It has an
-	  internal buffer holding up to 8 bytes for transfers and supports
-	  both 7-bit and 10-bit addresses.
+    bool "Amlogic Meson I2C driver"
+    depends on DM_I2C && ARCH_MESON
+    help
+      Add support for the I2C controller available in Amlogic Meson
+      SoCs. The controller supports programmable bus speed including
+      standard (100kbits/s) and fast (400kbit/s) speed and allows the
+      software to define a flexible format of the bit streams. It has an
+      internal buffer holding up to 8 bytes for transfers and supports
+      both 7-bit and 10-bit addresses.
config SYS_I2C_MXC
-	bool "NXP MXC I2C driver"
-	help
-	  Add support for the NXP I2C driver. This supports up to four bus
-	  channels and operating on standard mode up to 100 kbits/s and fast
-	  mode up to 400 kbits/s.
+    bool "NXP MXC I2C driver"
+    help
+      Add support for the NXP I2C driver. This supports up to four bus
+      channels and operating on standard mode up to 100 kbits/s and fast
+      mode up to 400 kbits/s.
# These settings are not used with DM_I2C, however SPL doesn't use
 # DM_I2C even if DM_I2C is enabled, and so might use these settings even
 # when main u-boot does not!
 if SYS_I2C_MXC && (!DM_I2C || SPL)
 config SYS_I2C_MXC_I2C1
-	bool "NXP MXC I2C1"
-	help
-	 Add support for NXP MXC I2C Controller 1.
-	 Required for SoCs which have I2C MXC controller 1 eg LS1088A, LS2080A
+    bool "NXP MXC I2C1"
+    help
+     Add support for NXP MXC I2C Controller 1.
+     Required for SoCs which have I2C MXC controller 1 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C2
-	bool "NXP MXC I2C2"
-	help
-	 Add support for NXP MXC I2C Controller 2.
-	 Required for SoCs which have I2C MXC controller 2 eg LS1088A, LS2080A
+    bool "NXP MXC I2C2"
+    help
+     Add support for NXP MXC I2C Controller 2.
+     Required for SoCs which have I2C MXC controller 2 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C3
-	bool "NXP MXC I2C3"
-	help
-	 Add support for NXP MXC I2C Controller 3.
-	 Required for SoCs which have I2C MXC controller 3 eg LS1088A, LS2080A
+    bool "NXP MXC I2C3"
+    help
+     Add support for NXP MXC I2C Controller 3.
+     Required for SoCs which have I2C MXC controller 3 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C4
-	bool "NXP MXC I2C4"
-	help
-	 Add support for NXP MXC I2C Controller 4.
-	 Required for SoCs which have I2C MXC controller 4 eg LS1088A, LS2080A
+    bool "NXP MXC I2C4"
+    help
+     Add support for NXP MXC I2C Controller 4.
+     Required for SoCs which have I2C MXC controller 4 eg LS1088A, LS2080A
config SYS_I2C_MXC_I2C5
-	bool "NXP MXC I2C5"
-	help
-	 Add support for NXP MXC I2C Controller 5.
-	 Required for SoCs which have I2C MXC controller 5 eg LX2160A
+    bool "NXP MXC I2C5"
+    help
+     Add support for NXP MXC I2C Controller 5.
+     Required for SoCs which have I2C MXC controller 5 eg LX2160A
config SYS_I2C_MXC_I2C6
-	bool "NXP MXC I2C6"
-	help
-	 Add support for NXP MXC I2C Controller 6.
-	 Required for SoCs which have I2C MXC controller 6 eg LX2160A
+    bool "NXP MXC I2C6"
+    help
+     Add support for NXP MXC I2C Controller 6.
+     Required for SoCs which have I2C MXC controller 6 eg LX2160A
config SYS_I2C_MXC_I2C7
-	bool "NXP MXC I2C7"
-	help
-	 Add support for NXP MXC I2C Controller 7.
-	 Required for SoCs which have I2C MXC controller 7 eg LX2160A
+    bool "NXP MXC I2C7"
+    help
+     Add support for NXP MXC I2C Controller 7.
+     Required for SoCs which have I2C MXC controller 7 eg LX2160A
config SYS_I2C_MXC_I2C8
-	bool "NXP MXC I2C8"
-	help
-	 Add support for NXP MXC I2C Controller 8.
-	 Required for SoCs which have I2C MXC controller 8 eg LX2160A
+    bool "NXP MXC I2C8"
+    help
+     Add support for NXP MXC I2C Controller 8.
+     Required for SoCs which have I2C MXC controller 8 eg LX2160A
 endif
if SYS_I2C_MXC_I2C1
 config SYS_MXC_I2C1_SPEED
-	int "I2C Channel 1 speed"
-	default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
-	default 100000
-	help
-	 MXC I2C Channel 1 speed
+    int "I2C Channel 1 speed"
+    default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
+    default 100000
+    help
+     MXC I2C Channel 1 speed
config SYS_MXC_I2C1_SLAVE
-	int "I2C1 Slave"
-	default 0
-	help
-	 MXC I2C1 Slave
+    int "I2C1 Slave"
+    default 0
+    help
+     MXC I2C1 Slave
 endif
if SYS_I2C_MXC_I2C2
 config SYS_MXC_I2C2_SPEED
-	int "I2C Channel 2 speed"
-	default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
-	default 100000
-	help
-	 MXC I2C Channel 2 speed
+    int "I2C Channel 2 speed"
+    default 40000000 if TARGET_LS2080A_SIMU || TARGET_LS2080A_EMU
+    default 100000
+    help
+     MXC I2C Channel 2 speed
config SYS_MXC_I2C2_SLAVE
-	int "I2C2 Slave"
-	default 0
-	help
-	 MXC I2C2 Slave
+    int "I2C2 Slave"
+    default 0
+    help
+     MXC I2C2 Slave
 endif
if SYS_I2C_MXC_I2C3
 config SYS_MXC_I2C3_SPEED
-	int "I2C Channel 3 speed"
-	default 100000
-	help
-	 MXC I2C Channel 3 speed
+    int "I2C Channel 3 speed"
+    default 100000
+    help
+     MXC I2C Channel 3 speed
config SYS_MXC_I2C3_SLAVE
-	int "I2C3 Slave"
-	default 0
-	help
-	 MXC I2C3 Slave
+    int "I2C3 Slave"
+    default 0
+    help
+     MXC I2C3 Slave
 endif
if SYS_I2C_MXC_I2C4
 config SYS_MXC_I2C4_SPEED
-	int "I2C Channel 4 speed"
-	default 100000
-	help
-	 MXC I2C Channel 4 speed
+    int "I2C Channel 4 speed"
+    default 100000
+    help
+     MXC I2C Channel 4 speed
config SYS_MXC_I2C4_SLAVE
-	int "I2C4 Slave"
-	default 0
-	help
-	 MXC I2C4 Slave
+    int "I2C4 Slave"
+    default 0
+    help
+     MXC I2C4 Slave
 endif
if SYS_I2C_MXC_I2C5
 config SYS_MXC_I2C5_SPEED
-	int "I2C Channel 5 speed"
-	default 100000
-	help
-	 MXC I2C Channel 5 speed
+    int "I2C Channel 5 speed"
+    default 100000
+    help
+     MXC I2C Channel 5 speed
config SYS_MXC_I2C5_SLAVE
-	int "I2C5 Slave"
-	default 0
-	help
-	 MXC I2C5 Slave
+    int "I2C5 Slave"
+    default 0
+    help
+     MXC I2C5 Slave
 endif
if SYS_I2C_MXC_I2C6
 config SYS_MXC_I2C6_SPEED
-	int "I2C Channel 6 speed"
-	default 100000
-	help
-	 MXC I2C Channel 6 speed
+    int "I2C Channel 6 speed"
+    default 100000
+    help
+     MXC I2C Channel 6 speed
config SYS_MXC_I2C6_SLAVE
-	int "I2C6 Slave"
-	default 0
-	help
-	 MXC I2C6 Slave
+    int "I2C6 Slave"
+    default 0
+    help
+     MXC I2C6 Slave
 endif
if SYS_I2C_MXC_I2C7
 config SYS_MXC_I2C7_SPEED
-	int "I2C Channel 7 speed"
-	default 100000
-	help
-	 MXC I2C Channel 7 speed
+    int "I2C Channel 7 speed"
+    default 100000
+    help
+     MXC I2C Channel 7 speed
config SYS_MXC_I2C7_SLAVE
-	int "I2C7 Slave"
-	default 0
-	help
-	 MXC I2C7 Slave
+    int "I2C7 Slave"
+    default 0
+    help
+     MXC I2C7 Slave
 endif
if SYS_I2C_MXC_I2C8
 config SYS_MXC_I2C8_SPEED
-	int "I2C Channel 8 speed"
-	default 100000
-	help
-	 MXC I2C Channel 8 speed
+    int "I2C Channel 8 speed"
+    default 100000
+    help
+     MXC I2C Channel 8 speed
config SYS_MXC_I2C8_SLAVE
-	int "I2C8 Slave"
-	default 0
-	help
-	 MXC I2C8 Slave
+    int "I2C8 Slave"
+    default 0
+    help
+     MXC I2C8 Slave
 endif
config SYS_I2C_OMAP24XX
-	bool "TI OMAP2+ I2C driver"
-	depends on ARCH_OMAP2PLUS || ARCH_K3
-	help
-	  Add support for the OMAP2+ I2C driver.
+    bool "TI OMAP2+ I2C driver"
+    depends on ARCH_OMAP2PLUS || ARCH_K3
+    help
+      Add support for the OMAP2+ I2C driver.
if SYS_I2C_OMAP24XX
 config SYS_OMAP24_I2C_SLAVE
-	int "I2C Slave addr channel 0"
-	default 1
-	help
-	  OMAP24xx I2C Slave address channel 0
+    int "I2C Slave addr channel 0"
+    default 1
+    help
+      OMAP24xx I2C Slave address channel 0
config SYS_OMAP24_I2C_SPEED
-	int "I2C Slave channel 0 speed"
-	default 100000
-	help
-	  OMAP24xx Slave speed channel 0
+    int "I2C Slave channel 0 speed"
+    default 100000
+    help
+      OMAP24xx Slave speed channel 0
 endif
config SYS_I2C_RCAR_I2C
-	bool "Renesas RCar I2C driver"
-	depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
-	help
-	  Support for Renesas RCar I2C controller.
+    bool "Renesas RCar I2C driver"
+    depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
+    help
+      Support for Renesas RCar I2C controller.
config SYS_I2C_RCAR_IIC
-	bool "Renesas RCar Gen3 IIC driver"
-	depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
-	help
-	  Support for Renesas RCar Gen3 IIC controller.
+    bool "Renesas RCar Gen3 IIC driver"
+    depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
+    help
+      Support for Renesas RCar Gen3 IIC controller.
config SYS_I2C_ROCKCHIP
-	bool "Rockchip I2C driver"
-	depends on DM_I2C
-	help
-	  Add support for the Rockchip I2C driver. This is used with various
-	  Rockchip parts such as RK3126, RK3128, RK3036 and RK3288. All chips
-	  have several I2C ports and all are provided, controlled by the
-	  device tree.
+    bool "Rockchip I2C driver"
+    depends on DM_I2C
+    help
+      Add support for the Rockchip I2C driver. This is used with various
+      Rockchip parts such as RK3126, RK3128, RK3036 and RK3288. All chips
+      have several I2C ports and all are provided, controlled by the
+      device tree.
config SYS_I2C_SANDBOX
-	bool "Sandbox I2C driver"
-	depends on SANDBOX && DM_I2C
-	help
-	  Enable I2C support for sandbox. This is an emulation of a real I2C
-	  bus. Devices can be attached to the bus using the device tree
-	  which specifies the driver to use.  See sandbox.dts as an example.
+    bool "Sandbox I2C driver"
+    depends on SANDBOX && DM_I2C
+    help
+      Enable I2C support for sandbox. This is an emulation of a real I2C
+      bus. Devices can be attached to the bus using the device tree
+      which specifies the driver to use.  See sandbox.dts as an example.
config SYS_I2C_S3C24X0
-	bool "Samsung I2C driver"
-	depends on ARCH_EXYNOS4 && DM_I2C
-	help
-	  Support for Samsung I2C controller as Samsung SoCs.
+    bool "Samsung I2C driver"
+    depends on ARCH_EXYNOS4 && DM_I2C
+    help
+      Support for Samsung I2C controller as Samsung SoCs.
config SYS_I2C_STM32F7
-	bool "STMicroelectronics STM32F7 I2C support"
-	depends on (STM32F7 || STM32H7 || ARCH_STM32MP) && DM_I2C
-	help
-	  Enable this option to add support for STM32 I2C controller
-	  introduced with STM32F7/H7 SoCs. This I2C controller supports :
-	   _ Slave and master modes
-	   _ Multimaster capability
-	   _ Standard-mode (up to 100 kHz)
-	   _ Fast-mode (up to 400 kHz)
-	   _ Fast-mode Plus (up to 1 MHz)
-	   _ 7-bit and 10-bit addressing mode
-	   _ Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask)
-	   _ All 7-bit addresses acknowledge mode
-	   _ General call
-	   _ Programmable setup and hold times
-	   _ Easy to use event management
-	   _ Optional clock stretching
-	   _ Software reset
+    bool "STMicroelectronics STM32F7 I2C support"
+    depends on (STM32F7 || STM32H7 || ARCH_STM32MP) && DM_I2C
+    help
+      Enable this option to add support for STM32 I2C controller
+      introduced with STM32F7/H7 SoCs. This I2C controller supports :
+       _ Slave and master modes
+       _ Multimaster capability
+       _ Standard-mode (up to 100 kHz)
+       _ Fast-mode (up to 400 kHz)
+       _ Fast-mode Plus (up to 1 MHz)
+       _ 7-bit and 10-bit addressing mode
+       _ Multiple 7-bit slave addresses (2 addresses, 1 with configurable mask)
+       _ All 7-bit addresses acknowledge mode
+       _ General call
+       _ Programmable setup and hold times
+       _ Easy to use event management
+       _ Optional clock stretching
+       _ Software reset
config SYS_I2C_TEGRA
-	bool "NVIDIA Tegra internal I2C controller"
-	depends on TEGRA
-	help
-	  Support for NVIDIA I2C controller available in Tegra SoCs.
+    bool "NVIDIA Tegra internal I2C controller"
+    depends on TEGRA
+    help
+      Support for NVIDIA I2C controller available in Tegra SoCs.
config SYS_I2C_UNIPHIER
-	bool "UniPhier I2C driver"
-	depends on ARCH_UNIPHIER && DM_I2C
-	default y
-	help
-	  Support for UniPhier I2C controller driver.  This I2C controller
-	  is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
+    bool "UniPhier I2C driver"
+    depends on ARCH_UNIPHIER && DM_I2C
+    default y
+    help
+      Support for UniPhier I2C controller driver.  This I2C controller
+      is used on PH1-LD4, PH1-sLD8 or older UniPhier SoCs.
config SYS_I2C_UNIPHIER_F
-	bool "UniPhier FIFO-builtin I2C driver"
-	depends on ARCH_UNIPHIER && DM_I2C
-	default y
-	help
-	  Support for UniPhier FIFO-builtin I2C controller driver.
-	  This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.
+    bool "UniPhier FIFO-builtin I2C driver"
+    depends on ARCH_UNIPHIER && DM_I2C
+    default y
+    help
+      Support for UniPhier FIFO-builtin I2C controller driver.
+      This I2C controller is used on PH1-Pro4 or newer UniPhier SoCs.
config SYS_I2C_VERSATILE
-	bool "Arm Ltd Versatile I2C bus driver"
-	depends on DM_I2C && (TARGET_VEXPRESS_CA15_TC2 || TARGET_VEXPRESS64_JUNO)
-	help
-	  Add support for the Arm Ltd Versatile Express I2C driver. The I2C host
-	  controller is present in the development boards manufactured by Arm Ltd.
+    bool "Arm Ltd Versatile I2C bus driver"
+    depends on DM_I2C && (TARGET_VEXPRESS_CA15_TC2 || TARGET_VEXPRESS64_JUNO)
+    help
+      Add support for the Arm Ltd Versatile Express I2C driver. The I2C host
+      controller is present in the development boards manufactured by Arm Ltd.
config SYS_I2C_MVTWSI
-	bool "Marvell I2C driver"
-	depends on DM_I2C
-	help
-	  Support for Marvell I2C controllers as used on the orion5x and
-	  kirkwood SoC families.
+    bool "Marvell I2C driver"
+    depends on DM_I2C
+    help
+      Support for Marvell I2C controllers as used on the orion5x and
+      kirkwood SoC families.
config TEGRA186_BPMP_I2C
-	bool "Enable Tegra186 BPMP-based I2C driver"
-	depends on TEGRA186_BPMP
-	help
-	  Support for Tegra I2C controllers managed by the BPMP (Boot and
-	  Power Management Processor). On Tegra186, some I2C controllers are
-	  directly controlled by the main CPU, whereas others are controlled
-	  by the BPMP, and can only be accessed by the main CPU via IPC
-	  requests to the BPMP. This driver covers the latter case.
+    bool "Enable Tegra186 BPMP-based I2C driver"
+    depends on TEGRA186_BPMP
+    help
+      Support for Tegra I2C controllers managed by the BPMP (Boot and
+      Power Management Processor). On Tegra186, some I2C controllers are
+      directly controlled by the main CPU, whereas others are controlled
+      by the BPMP, and can only be accessed by the main CPU via IPC
+      requests to the BPMP. This driver covers the latter case.
config SYS_I2C_BUS_MAX
-	int "Max I2C busses"
-	depends on ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_SOCFPGA
-	default 2 if TI816X
-	default 3 if OMAP34XX || AM33XX || AM43XX || ARCH_KEYSTONE
-	default 4 if ARCH_SOCFPGA || OMAP44XX || TI814X
-	default 5 if OMAP54XX
-	help
-	  Define the maximum number of available I2C buses.
+    int "Max I2C busses"
+    depends on ARCH_KEYSTONE || ARCH_OMAP2PLUS || ARCH_SOCFPGA
+    default 2 if TI816X
+    default 3 if OMAP34XX || AM33XX || AM43XX || ARCH_KEYSTONE
+    default 4 if ARCH_SOCFPGA || OMAP44XX || TI814X
+    default 5 if OMAP54XX
+    help
+      Define the maximum number of available I2C buses.
config SYS_I2C_XILINX_XIIC
-	bool "Xilinx AXI I2C driver"
-	depends on DM_I2C
-	help
-	  Support for Xilinx AXI I2C controller.
+    bool "Xilinx AXI I2C driver"
+    depends on DM_I2C
+    help
+      Support for Xilinx AXI I2C controller.
config SYS_I2C_IHS
         bool "gdsys IHS I2C driver"
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index c2f75d8755..7cfe68e088 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -38,5 +38,5 @@ obj-$(CONFIG_SYS_I2C_UNIPHIER_F) += i2c-uniphier-f.o
 obj-$(CONFIG_SYS_I2C_VERSATILE) += i2c-versatile.o
 obj-$(CONFIG_SYS_I2C_XILINX_XIIC) += xilinx_xiic.o
 obj-$(CONFIG_TEGRA186_BPMP_I2C) += tegra186_bpmp_i2c.o
-
+obj-$(CONFIG_IPROC_I2C) += iproc_i2c.o
 obj-$(CONFIG_I2C_MUX) += muxes/
diff --git a/drivers/i2c/iproc_i2c.c b/drivers/i2c/iproc_i2c.c
new file mode 100644
index 0000000000..692035666c
--- /dev/null
+++ b/drivers/i2c/iproc_i2c.c
@@ -0,0 +1,765 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C)) 2018 Broadcom
+ */
+
+#include <common.h>
+#include <config.h>
+#include <dm.h>
+#include <i2c.h>
+#include <asm/io.h>
+#include "errno.h"
+#include "iproc_i2c.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int i2c_init_done;
+
+struct iproc_i2c_regs {
+	u32 cfg_reg;
+	u32 timg_cfg;
+	u32 addr_reg;
+	u32 mstr_fifo_ctrl;
+	u32 slv_fifo_ctrl;
+	u32 bitbng_ctrl;
+	u32 blnks[6]; /* Not to be used */
+	u32 mstr_cmd;
+	u32 slv_cmd;
+	u32 evt_en;
+	u32 evt_sts;
+	u32 mstr_datawr;
+	u32 mstr_datard;
+	u32 slv_datawr;
+	u32 slv_datard;
+};
+
+struct iproc_i2c {
+	struct iproc_i2c_regs __iomem *base; /* register base */
+	int bus_speed;
+};
+
+/* Function to read a value from specified register. */
+static unsigned int iproc_i2c_reg_read(u32 *reg_addr)
+{
+	unsigned int val;
+
+	val = readl((void *)(reg_addr));
+	return cpu_to_le32(val);
+}
+
+/* Function to write a value ('val') in to a specified register. */
+static int iproc_i2c_reg_write(u32 *reg_addr, unsigned int val)
+{
+	val = cpu_to_le32(val);
+	writel(val, (void *)(reg_addr));
+	return  0;
+}
+
+#ifdef IPROC_I2C_DBG
+static int iproc_dump_i2c_regs(struct iproc_i2c *bus_prvdata)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	unsigned int regval;
+
+	debug("\n----------------------------------------------\n");
+	debug("%s: Dumping SMBus registers...\n", __func__);
+
+	regval = iproc_i2c_reg_read(&base->cfg_reg);
+	debug("CCB_SMB_CFG_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->timg_cfg);
+	debug("CCB_SMB_TIMGCFG_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->addr_reg);
+	debug("CCB_SMB_ADDR_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->mstr_fifo_ctrl);
+	debug("CCB_SMB_MSTRFIFOCTL_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->slv_fifo_ctrl);
+	debug("CCB_SMB_SLVFIFOCTL_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->bitbng_ctrl);
+	debug("CCB_SMB_BITBANGCTL_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->mstr_cmd);
+	debug("CCB_SMB_MSTRCMD_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->slv_cmd);
+	debug("CCB_SMB_SLVCMD_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->evt_en);
+	debug("CCB_SMB_EVTEN_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->evt_sts);
+	debug("CCB_SMB_EVTSTS_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->mstr_datawr);
+	debug("CCB_SMB_MSTRDATAWR_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->mstr_datard);
+	debug("CCB_SMB_MSTRDATARD_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->slv_datawr);
+	debug("CCB_SMB_SLVDATAWR_REG=0x%08X\n", regval);
+
+	regval = iproc_i2c_reg_read(&base->slv_datard);
+	debug("CCB_SMB_SLVDATARD_REG=0x%08X\n", regval);
+
+	debug("----------------------------------------------\n\n");
+	return 0;
+}
+#endif
+
+/*
+ * Function to ensure that the previous transaction was completed before
+ * initiating a new transaction. It can also be used in polling mode to
+ * check status of completion of a command
+ */
+static int iproc_i2c_startbusy_wait(struct iproc_i2c *bus_prvdata)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	unsigned int regval;
+
+	regval = iproc_i2c_reg_read(&base->mstr_cmd);
+
+	/* Check if an operation is in progress. During probe it won't be.
+	 * But when shutdown/remove was called we want to make sure that
+	 * the transaction in progress completed
+	 */
+	if (regval & CCB_SMB_MSTRSTARTBUSYCMD_MASK) {
+		unsigned int i = 0;
+
+		do {
+			mdelay(10); /* Wait for 10 msec */
+			i++;
+			regval = iproc_i2c_reg_read(&base->mstr_cmd);
+
+			/* If start-busy bit cleared, exit the loop */
+		} while ((regval & CCB_SMB_MSTRSTARTBUSYCMD_MASK) &&
+			 (i < IPROC_SMB_MAX_RETRIES));
+
+		if (i >= IPROC_SMB_MAX_RETRIES) {
+			pr_err("%s: START_BUSY bit didn't clear, exiting\n",
+			       __func__);
+
+			return -ETIMEDOUT;
+		}
+	}
+	return 0;
+}
+
+/*
+ * This function set clock frequency for SMBus block. As per hardware
+ * engineering, the clock frequency can be changed dynamically.
+ */
+static int iproc_i2c_set_clk_freq(struct iproc_i2c *bus_prvdata)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	unsigned int regval;
+
+	regval = iproc_i2c_reg_read(&base->timg_cfg);
+
+	switch (bus_prvdata->bus_speed) {
+	case I2C_SPEED_100KHZ:
+		SETREGFLDVAL(regval, SMBUS_BLOCK_MODE_100,
+			     CCB_SMB_TIMGCFG_MODE400_MASK,
+			     CCB_SMB_TIMGCFG_MODE400_SHIFT);
+		break;
+
+	case I2C_SPEED_400KHZ:
+		SETREGFLDVAL(regval, SMBUS_BLOCK_MODE_400,
+			     CCB_SMB_TIMGCFG_MODE400_MASK,
+			     CCB_SMB_TIMGCFG_MODE400_SHIFT);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	iproc_i2c_reg_write(&base->timg_cfg, regval);
+	return 0;
+}
+
+static int iproc_i2c_init(struct iproc_i2c *bus_prvdata)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	unsigned int regval;
+
+#ifdef IPROC_I2C_DBG
+	debug("\n%s: Entering", __func__);
+#endif /* IPROC_I2C_DBG */
+
+	/* Flush Tx, Rx FIFOs. Note we are setting the Rx FIFO threshold to 0.
+	 * May be OK since we are setting RX_EVENT and RX_FIFO_FULL interrupts
+	 */
+	regval = CCB_SMB_MSTRRXFIFOFLSH_MASK | CCB_SMB_MSTRTXFIFOFLSH_MASK;
+	iproc_i2c_reg_write(&base->mstr_fifo_ctrl, regval);
+
+	/* Enable SMbus block. Note, we are setting MASTER_RETRY_COUNT to zero
+	 * since there will be only one master
+	 */
+
+	regval = iproc_i2c_reg_read(&base->cfg_reg);
+	regval |= CCB_SMB_CFG_SMBEN_MASK;
+	iproc_i2c_reg_write(&base->cfg_reg, regval);
+#if defined(CONFIG_CYGNUS) || defined(CONFIG_TARGET_BCMOMEGA)
+	regval = iproc_i2c_reg_read(&base->cfg_reg);
+	regval |= CCB_SMB_CFG_RST_MASK;
+	iproc_i2c_reg_write(&base->cfg_reg, regval);
+	regval &= ~CCB_SMB_CFG_RST_MASK;
+	iproc_i2c_reg_write(&base->cfg_reg, regval);
+#endif
+	/* Wait a minimum of 50 Usec, as per SMB hw doc */
+	udelay(50);
+
+	/* Set default clock frequency */
+	iproc_i2c_set_clk_freq(bus_prvdata);
+
+	/* Disable intrs */
+	iproc_i2c_reg_write(&base->evt_en, 0);
+
+	/* Clear intrs (W1TC) */
+	regval = iproc_i2c_reg_read(&base->evt_sts);
+	iproc_i2c_reg_write(&base->evt_sts, regval);
+
+	i2c_init_done = 1;
+
+#ifdef IPROC_I2C_DBG
+	iproc_dump_i2c_regs(bus_prvdata);
+
+	debug("%s: Init successful\n", __func__);
+#endif /* IPROC_I2C_DBG */
+
+	return 0;
+}
+
+/*
+ * This function copies data to SMBus's Tx FIFO. Valid for write transactions
+ * only
+ *
+ * base_addr: Mapped address of this SMBus instance
+ * dev_addr:  SMBus (I2C) device address. We are assuming 7-bit addresses
+ *            initially
+ * info:   Data to copy in to Tx FIFO. For read commands, the size should be
+ *         set to zero by the caller
+ *
+ */
+static void iproc_i2c_write_trans_data(struct iproc_i2c *bus_prvdata,
+				       unsigned short dev_addr,
+				       struct iproc_xact_info *info)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	unsigned int regval;
+	unsigned int i;
+	unsigned int num_data_bytes = 0;
+
+#ifdef IPROC_I2C_DBG
+	debug("%s: dev_addr=0x%X cmd_valid=%d cmd=0x%02x size=%u proto=%d\n"
+		  "buf[] %x\n",
+		  __func__,
+		  dev_addr,
+		  info->cmd_valid,
+		  info->command,
+		  info->size,
+		  info->smb_proto,
+		  info->data[0]);
+#endif /* IPROC_I2C_DBG */
+
+	/* Write SMBus device address first */
+	/* Note, we are assuming 7-bit addresses for now. For 10-bit addresses,
+	 * we may have one more write to send the upper 3 bits of 10-bit addr
+	 */
+	iproc_i2c_reg_write(&base->mstr_datawr, dev_addr);
+
+	/* If the protocol needs command code, copy it */
+	if (info->cmd_valid)
+		iproc_i2c_reg_write(&base->mstr_datawr, info->command);
+
+	/* Depending on the SMBus protocol, we need to write additional
+	 * transaction data in to Tx FIFO. Refer to section 5.5 of SMBus
+	 * spec for sequence for a transaction
+	 */
+	switch (info->smb_proto) {
+	case SMBUS_PROT_RECV_BYTE:
+		/* No additional data to be written */
+		num_data_bytes = 0;
+		break;
+
+	case SMBUS_PROT_SEND_BYTE:
+		num_data_bytes = info->size;
+		break;
+
+	case SMBUS_PROT_RD_BYTE:
+	case SMBUS_PROT_RD_WORD:
+	case SMBUS_PROT_BLK_RD:
+		/* Write slave address with R/W~ set (bit #0) */
+		iproc_i2c_reg_write(&base->mstr_datawr,
+				    dev_addr | 0x1);
+		num_data_bytes = 0;
+		break;
+#if defined(CONFIG_CYGNUS) || defined(CONFIG_TARGET_BCMOMEGA)
+	case SMBUS_PROT_BLK_WR_BLK_RD_PROC_CALL:
+		iproc_i2c_reg_write(&base->mstr_datawr,
+				    dev_addr | 0x1 |
+				    CCB_SMB_MSTRWRSTS_MASK);
+		num_data_bytes = 0;
+		break;
+#endif
+	case SMBUS_PROT_WR_BYTE:
+	case SMBUS_PROT_WR_WORD:
+		/* No additional bytes to be written.
+		 * Data portion is written in the
+		 * 'for' loop below
+		 */
+		num_data_bytes = info->size;
+		break;
+
+	case SMBUS_PROT_BLK_WR:
+		/* 3rd byte is byte count */
+		iproc_i2c_reg_write(&base->mstr_datawr, info->size);
+		num_data_bytes = info->size;
+		break;
+
+	default:
+		break;
+	}
+
+	/* Copy actual data from caller, next. In general, for reads, no data is
+	 * copied
+	 */
+	for (i = 0; num_data_bytes; --num_data_bytes, i++) {
+		/* For the last byte, set MASTER_WR_STATUS bit */
+		regval = (num_data_bytes == 1) ?
+			 info->data[i] | CCB_SMB_MSTRWRSTS_MASK :
+			 info->data[i];
+
+		iproc_i2c_reg_write(&base->mstr_datawr, regval);
+	}
+}
+
+static int iproc_i2c_data_send(struct iproc_i2c *bus_prvdata,
+			       unsigned short addr,
+			       struct iproc_xact_info *info)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	int rc, retry = 3; unsigned int regval;
+
+	/* Make sure the previous transaction completed */
+	rc = iproc_i2c_startbusy_wait(bus_prvdata);
+
+	if (rc < 0) {
+		pr_err("%s: Send: bus is busy, exiting\n", __func__);
+		return rc;
+	}
+
+	/* Write transaction bytes to Tx FIFO */
+	iproc_i2c_write_trans_data(bus_prvdata, addr, info);
+
+	/* Program master command register (0x30) with protocol type and set
+	 * start_busy_command bit to initiate the write transaction
+	 */
+	regval = (info->smb_proto << CCB_SMB_MSTRSMBUSPROTO_SHIFT) |
+		 CCB_SMB_MSTRSTARTBUSYCMD_MASK;
+
+	iproc_i2c_reg_write(&base->mstr_cmd, regval);
+
+	/* Check for Master status */
+	regval = iproc_i2c_reg_read(&base->mstr_cmd);
+	while (regval & CCB_SMB_MSTRSTARTBUSYCMD_MASK) {
+		mdelay(10);
+		if (retry-- <= 0)
+			break;
+		regval = iproc_i2c_reg_read(&base->mstr_cmd);
+	}
+
+	/* If start_busy bit cleared, check if there are any errors */
+	if (!(regval & CCB_SMB_MSTRSTARTBUSYCMD_MASK)) {
+		/* start_busy bit cleared, check master_status field now */
+		regval &= CCB_SMB_MSTRSTS_MASK;
+		regval >>= CCB_SMB_MSTRSTS_SHIFT;
+
+		if (regval != MSTR_STS_XACT_SUCCESS) {
+			/* Error We can flush Tx FIFO here */
+			pr_err("%s: ERROR: Error in transaction %u, exiting\n",
+			       __func__, regval);
+			return -EREMOTEIO;
+		}
+	}
+
+	return 0;
+}
+
+static int iproc_i2c_data_recv(struct iproc_i2c *bus_prvdata,
+			       unsigned short addr,
+			       struct iproc_xact_info *info,
+			       unsigned int *num_bytes_read)
+{
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	int rc, retry = 3;
+	unsigned int regval;
+
+	/* Make sure the previous transaction completed */
+	rc = iproc_i2c_startbusy_wait(bus_prvdata);
+
+	if (rc < 0) {
+		pr_err("%s: Receive: Bus is busy, exiting\n", __func__);
+		return rc;
+	}
+
+	/* Program all transaction bytes into master Tx FIFO */
+	iproc_i2c_write_trans_data(bus_prvdata, addr, info);
+
+	/* Program master command register (0x30) with protocol type and set
+	 * start_busy_command bit to initiate the write transaction
+	 */
+	regval = (info->smb_proto << CCB_SMB_MSTRSMBUSPROTO_SHIFT) |
+		 CCB_SMB_MSTRSTARTBUSYCMD_MASK | info->size;
+
+	iproc_i2c_reg_write(&base->mstr_cmd, regval);
+
+	/* Check for Master status */
+	regval = iproc_i2c_reg_read(&base->mstr_cmd);
+	while (regval & CCB_SMB_MSTRSTARTBUSYCMD_MASK) {
+		udelay(1000);
+		if (retry-- <= 0)
+			break;
+		regval = iproc_i2c_reg_read(&base->mstr_cmd);
+	}
+
+	/* If start_busy bit cleared, check if there are any errors */
+	if (!(regval & CCB_SMB_MSTRSTARTBUSYCMD_MASK)) {
+		/* start_busy bit cleared, check master_status field now */
+		regval &= CCB_SMB_MSTRSTS_MASK;
+		regval >>= CCB_SMB_MSTRSTS_SHIFT;
+
+		if (regval != MSTR_STS_XACT_SUCCESS) {
+			/* We can flush Tx FIFO here */
+			pr_err("%s: Error in transaction %d, exiting\n",
+			       __func__, regval);
+			return -EREMOTEIO;
+		}
+	}
+
+	/* Read received byte(s), after TX out address etc */
+	regval = iproc_i2c_reg_read(&base->mstr_datard);
+
+	/* For block read, protocol (hw) returns byte count,
+	 * as the first byte
+	 */
+	if (info->smb_proto == SMBUS_PROT_BLK_RD) {
+		int i;
+
+		*num_bytes_read = regval & CCB_SMB_MSTRRDDATA_MASK;
+
+		/* Limit to reading a max of 32 bytes only; just a safeguard.
+		 * If # bytes read is a number > 32, check transaction set up,
+		 * and contact hw engg. Assumption: PEC is disabled
+		 */
+		for (i = 0;
+		     (i < *num_bytes_read) && (i < I2C_SMBUS_BLOCK_MAX);
+		     i++) {
+			/* Read Rx FIFO for data bytes */
+			regval = iproc_i2c_reg_read(&base->mstr_datard);
+			info->data[i] = regval & CCB_SMB_MSTRRDDATA_MASK;
+		}
+	} else {
+		/* 1 Byte data */
+		*info->data = regval & CCB_SMB_MSTRRDDATA_MASK;
+		*num_bytes_read = 1;
+	}
+
+	return 0;
+}
+
+static int i2c_write_byte(struct iproc_i2c *bus_prvdata,
+			  u8 devaddr,
+			  u8 regoffset,
+			  u8 value)
+{
+	int rc;
+	struct iproc_xact_info info;
+
+	devaddr <<= 1;
+
+	info.cmd_valid = 1;
+	info.command = (unsigned char)regoffset;
+	info.data = &value;
+	info.size = 1;
+	info.flags = 0;
+#if defined(CONFIG_CYGNUS) || defined(CONFIG_TARGET_BCMOMEGA)
+	info.smb_proto = SMBUS_PROT_WR_WORD;/*SMBUS_PROT_WR_BYTE;*/
+#else
+	info.smb_proto = SMBUS_PROT_WR_BYTE;
+#endif
+	/* Refer to i2c_smbus_write_byte params passed. */
+	rc = iproc_i2c_data_send(bus_prvdata, devaddr, &info);
+
+	if (rc < 0) {
+		pr_err("%s: %s error accessing device 0x%X\n",
+		       __func__, "Write", devaddr);
+		return -EREMOTEIO;
+	}
+
+	return 0;
+}
+
+int i2c_write(struct iproc_i2c *bus_prvdata,
+	      uchar chip,
+	      uint regaddr,
+	      int alen,
+	      uchar *buffer,
+	      int len)
+{
+	int i, data_len;
+	u8 *data;
+
+	if (alen > 1) {
+		pr_err("I2C write: addr len %d not supported\n", alen);
+		return 1;
+	}
+
+	if (regaddr + len > 256) {
+		pr_err("I2C write: address out of range\n");
+		return 1;
+	}
+
+	if (len < 1) {
+		pr_err("I2C write: Need offset addr and value\n");
+		return 1;
+	}
+
+	/* buffer contains offset addr followed by value to be written */
+	regaddr = buffer[0];
+	data = &buffer[1];
+	data_len = len - 1;
+
+	for (i = 0; i < data_len; i++) {
+		if (i2c_write_byte(bus_prvdata, chip, regaddr + i, data[i])) {
+			pr_err("I2C write (%d): I/O error\n", i);
+			iproc_i2c_init(bus_prvdata);
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+static int i2c_read_byte(struct iproc_i2c *bus_prvdata,
+			 u8 devaddr,
+			 u8 regoffset,
+			 u8 *value)
+{
+	int rc;
+	struct iproc_xact_info info;
+	unsigned int num_bytes_read = 0;
+
+	devaddr <<= 1;
+
+	info.cmd_valid = 1;
+	info.command = (unsigned char)regoffset;
+	info.data = value;
+	info.size = 1;
+	info.flags = 0;
+#if defined(CONFIG_CYGNUS) || defined(CONFIG_TARGET_BCMOMEGA)
+	info.smb_proto = SMBUS_PROT_BLK_WR_BLK_RD_PROC_CALL;
+#else
+	info.smb_proto = SMBUS_PROT_RD_BYTE;
+#endif
+	/* Refer to i2c_smbus_read_byte for params passed. */
+	rc = iproc_i2c_data_recv(bus_prvdata, devaddr, &info, &num_bytes_read);
+
+	if (rc < 0) {
+		pr_err("%s: %s error accessing device 0x%X\n",
+		       __func__, "Read", devaddr);
+		return -EREMOTEIO;
+	}
+
+	return 0;
+}
+
+int i2c_read(struct iproc_i2c *bus_prvdata,
+	     uchar chip,
+	     uint addr,
+	     int alen,
+	     uchar *buffer,
+	     int len)
+{
+	int i;
+
+	if (alen > 1) {
+		pr_err("I2C read: addr len %d not supported\n", alen);
+		return 1;
+	}
+
+	if (addr + len > 256) {
+		pr_err("I2C read: address out of range\n");
+		return 1;
+	}
+
+	for (i = 0; i < len; i++) {
+		if (i2c_read_byte(bus_prvdata, chip, addr + i, &buffer[i])) {
+			pr_err("I2C read: I/O error\n");
+			iproc_i2c_init(bus_prvdata);
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+static int iproc_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs)
+{
+	struct iproc_i2c *bus_prvdata = dev_get_priv(bus);
+	int ret = 0;
+
+#ifdef IPROC_I2C_DBG
+	debug("%s: %d messages\n", __func__, nmsgs);
+#endif
+
+	for (; nmsgs > 0; nmsgs--, msg++) {
+		if (msg->flags & I2C_M_RD)
+			ret = i2c_read(bus_prvdata,
+				       msg->addr,
+				       0,
+				       0,
+				       msg->buf,
+				       msg->len);
+		else
+			ret = i2c_write(bus_prvdata,
+					msg->addr,
+					0,
+					0,
+					msg->buf,
+					msg->len);
+	}
+
+	return ret;
+}
+
+static int iproc_i2c_probe_chip(struct udevice *bus, uint chip_addr,
+				uint chip_flags)
+{
+	struct iproc_i2c *bus_prvdata = dev_get_priv(bus);
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	u32 regval;
+
+#ifdef IPROC_I2C_DBG
+	debug("\n%s: Entering chip probe\n", __func__);
+#endif /* IPROC_I2C_DBG */
+
+	/* Init internal regs, disable intrs (and then clear intrs), set fifo
+	 * thresholds, etc.
+	 */
+	if (!i2c_init_done)
+		iproc_i2c_init(bus_prvdata);
+
+	regval = (chip_addr << 1);
+	iproc_i2c_reg_write(&base->mstr_datawr, regval);
+	regval = ((SMBUS_PROT_QUICK_CMD << CCB_SMB_MSTRSMBUSPROTO_SHIFT) |
+			(1 << CCB_SMB_MSTRSTARTBUSYCMD_SHIFT));
+	iproc_i2c_reg_write(&base->mstr_cmd, regval);
+
+	do {
+		udelay(100);
+		regval = iproc_i2c_reg_read(&base->mstr_cmd);
+		regval &= CCB_SMB_MSTRSTARTBUSYCMD_MASK;
+	}  while (regval);
+
+	regval = iproc_i2c_reg_read(&base->mstr_cmd);
+
+	if ((regval & CCB_SMB_MSTRSTS_MASK) != 0)
+		return -1;
+
+#ifdef IPROC_I2C_DBG
+	iproc_dump_i2c_regs(bus_prvdata);
+
+	debug("%s: chip probe successful\n", __func__);
+#endif /* IPROC_I2C_DBG */
+
+	return 0;
+}
+
+static int iproc_i2c_set_bus_speed(struct udevice *bus, unsigned int speed)
+{
+	struct iproc_i2c *bus_prvdata = dev_get_priv(bus);
+
+	bus_prvdata->bus_speed = speed;
+	if (iproc_i2c_set_clk_freq(bus_prvdata))
+		return -EINVAL;
+
+	return 0;
+}
+
+/**
+ * i2c_get_bus_speed - get i2c bus speed
+ *
+ * This function returns the speed of operation in Hz
+ */
+int iproc_i2c_get_bus_speed(struct udevice *bus)
+{
+	struct iproc_i2c *bus_prvdata = dev_get_priv(bus);
+	struct iproc_i2c_regs *base = bus_prvdata->base;
+	unsigned int regval;
+	unsigned int val;
+
+	regval = iproc_i2c_reg_read(&base->timg_cfg);
+	val = GETREGFLDVAL(regval, CCB_SMB_TIMGCFG_MODE400_MASK,
+			   CCB_SMB_TIMGCFG_MODE400_SHIFT);
+	switch (val) {
+	case 0:
+		return I2C_SPEED_100KHZ;
+	case 1:
+		return I2C_SPEED_400KHZ;
+	default:
+		return -EINVAL;
+	}
+	return -EINVAL;
+}
+
+static int iproc_i2c_probe(struct udevice *bus)
+{
+	struct iproc_i2c *bus_prvdata = dev_get_priv(bus);
+
+	return iproc_i2c_init(bus_prvdata);
+}
+
+static int iproc_i2c_ofdata_to_platdata(struct udevice *bus)
+{
+	struct iproc_i2c *bus_prvdata = dev_get_priv(bus);
+	int node = dev_of_offset(bus);
+	const void *blob = gd->fdt_blob;
+
+	bus_prvdata->base = map_physmem(devfdt_get_addr(bus),
+					sizeof(void *),
+					MAP_NOCACHE);
+
+	/* default 100KHz freq */
+	bus_prvdata->bus_speed = fdtdec_get_int(blob, node, "bus-frequency",
+						I2C_SPEED_100KHZ);
+
+	return 0;
+}
+
+static const struct dm_i2c_ops iproc_i2c_ops = {
+	.xfer		= iproc_i2c_xfer,
+	.probe_chip	= iproc_i2c_probe_chip,
+	.set_bus_speed	= iproc_i2c_set_bus_speed,
+	.get_bus_speed	= iproc_i2c_get_bus_speed,
+};
+
+static const struct udevice_id iproc_i2c_ids[] = {
+	{ .compatible = "brcm,iproc-i2c" },
+	{ }
+};
+
+U_BOOT_DRIVER(iproc_i2c) = {
+	.name	= "iproc_i2c",
+	.id	= UCLASS_I2C,
+	.of_match = iproc_i2c_ids,
+	.ofdata_to_platdata = iproc_i2c_ofdata_to_platdata,
+	.probe	= iproc_i2c_probe,
+	.priv_auto_alloc_size = sizeof(struct iproc_i2c),
+	.ops	= &iproc_i2c_ops,
+	.flags  = DM_FLAG_PRE_RELOC,
+};
diff --git a/drivers/i2c/iproc_i2c.h b/drivers/i2c/iproc_i2c.h
new file mode 100644
index 0000000000..4f8d6ba2b2
--- /dev/null
+++ b/drivers/i2c/iproc_i2c.h
@@ -0,0 +1,356 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (C) 2018 Broadcom */
+
+#ifndef __IPROC_I2C_H__
+#define __IPROC_I2C_H__
+
+#if (defined(CONFIG_NS_PLUS) || defined(CONFIG_HELIX4))
+#define SHADOW_CPY_BUFFER_ADDR1			0x70000000
+#define SHADOW_CPY_BUFFER_ADDR2			0x70100000
+#define IPROC_SMBUS_BASE_ADDR1			0x18038000
+#define IPROC_SMBUS_BASE_ADDR2			0x1803B000
+#elif (defined(CONFIG_CYGNUS))
+#define SHADOW_CPY_BUFFER_ADDR1			0x70000000
+#define SHADOW_CPY_BUFFER_ADDR2			0x70100000
+#define IPROC_SMBUS_BASE_ADDR1			0x18008000
+#define IPROC_SMBUS_BASE_ADDR2			0x1800B000
+#endif
+
+/* Registers */
+#define CCB_SMB_CFG_REG 0x0
+
+#define CCB_SMB_CFG_RST_MASK                         0x80000000
+#define CCB_SMB_CFG_RST_SHIFT                        31
+
+#define CCB_SMB_CFG_SMBEN_MASK                       0x40000000
+#define CCB_SMB_CFG_SMBEN_SHIFT                      30
+
+#define CCB_SMB_CFG_BITBANGEN_MASK                   0x20000000
+#define CCB_SMB_CFG_BITBANGEN_SHIFT                  29
+
+#define CCB_SMB_CFG_EN_NIC_SMBADDR0_MASK             0x10000000
+#define CCB_SMB_CFG_EN_NIC_SMBADDR0_SHIFT            28
+
+#define CCB_SMB_CFG_PROMISCMODE_MASK                 0x08000000
+#define CCB_SMB_CFG_PROMISCMODE_SHIFT                27
+
+#define CCB_SMB_CFG_TSTMPCNTEN_MASK                  0x04000000
+#define CCB_SMB_CFG_TSTMPCNTEN_SHIFT                 26
+
+#define CCB_SMB_CFG_MSTRRTRYCNT_MASK                 0x000F0000
+#define CCB_SMB_CFG_MSTRRTRYCNT_SHIFT                16
+
+#define CCB_SMB_TIMGCFG_REG 0x4
+
+#define CCB_SMB_TIMGCFG_MODE400_MASK                 0x80000000
+#define CCB_SMB_TIMGCFG_MODE400_SHIFT                31
+
+#define CCB_SMB_TIMGCFG_RNDSLVSTR_MASK               0x7F000000
+#define CCB_SMB_TIMGCFG_RNDSLVSTR_SHIFT              24
+
+#define CCB_SMB_TIMGCFG_PERSLVSTR_MASK               0x00FF0000
+#define CCB_SMB_TIMGCFG_PERSLVSTR_SHIFT              16
+
+#define CCB_SMB_TIMGCFG_IDLTIME_MASK                 0x0000FF00
+#define CCB_SMB_TIMGCFG_IDLTIME_SHIFT                8
+
+#define CCB_SMB_ADDR_REG 0x8
+
+#define CCB_SMB_EN_NIC_SMBADDR3_MASK                 0x80000000
+#define CCB_SMB_EN_NIC_SMBADDR3_SHIFT                31
+
+#define CCB_SMB_NIC_SMBADDR3_MASK                    0x7F000000
+#define CCB_SMB_NIC_SMBADDR3_SHIFT                   24
+
+#define CCB_SMB_EN_NIC_SMBADDR2_MASK                 0x00800000
+#define CCB_SMB_EN_NIC_SMBADDR2_SHIFT                23
+
+#define CCB_SMB_NIC_SMBADDR2_MASK                    0x007F0000
+#define CCB_SMB_NIC_SMBADDR2_SHIFT                   16
+
+#define CCB_SMB_EN_NIC_SMBADDR1_MASK                 0x00008000
+#define CCB_SMB_EN_NIC_SMBADDR1_SHIFT                15
+
+#define CCB_SMB_NIC_SMBADDR1_MASK                    0x00007F00
+#define CCB_SMB_NIC_SMBADDR1_SHIFT                   8
+
+#define CCB_SMB_EN_NIC_SMBADDR0_MASK                 0x00000080
+#define CCB_SMB_EN_NIC_SMBADDR0_SHIFT                7
+
+#define CCB_SMB_NIC_SMBADDR0_MASK                    0x0000007F
+#define CCB_SMB_NIC_SMBADDR0_SHIFT                   0
+
+#define CCB_SMB_MSTRFIFOCTL_REG 0xC
+
+#define CCB_SMB_MSTRRXFIFOFLSH_MASK                  0x80000000
+#define CCB_SMB_MSTRRXFIFOFLSH_SHIFT                 31
+
+#define CCB_SMB_MSTRTXFIFOFLSH_MASK                  0x40000000
+#define CCB_SMB_MSTRTXFIFOFLSH_SHIFT                 30
+
+#define CCB_SMB_MSTRRXPKTCNT_MASK                    0x007F0000
+#define CCB_SMB_MSTRRXPKTCNT_SHIFT                   16
+
+#define CCB_SMB_MSTRRXFIFOTHR_MASK                   0x00003F00
+#define CCB_SMB_MSTRRXFIFOTHR_SHIFT                  8
+
+#define CCB_SMB_SLVFIFOCTL_REG 0x10
+
+#define CCB_SMB_SLVRXFIFOFLSH_MASK                   0x80000000
+#define CCB_SMB_SLVRXFIFOFLSH_SHIFT                  31
+
+#define CCB_SMB_SLVTXFIFOFLSH_MASK                   0x40000000
+#define CCB_SMB_SLVTXFIFOFLSH_SHIFT                  30
+
+#define CCB_SMB_SLVRXPKTCNT_MASK                     0x007F0000
+#define CCB_SMB_SLVRXPKTCNT_SHIFT                    16
+
+#define CCB_SMB_SLVRXFIFOTHR_MASK                    0x00003F00
+#define CCB_SMB_SLVRXFIFOTHR_SHIFT                   8
+
+#define CCB_SMB_BITBANGCTL_REG 0x14
+
+#define CCB_SMB_SMBCLKIN_MASK                        0x80000000
+#define CCB_SMB_SMBCLKIN_SHIFT                       31
+
+#define CCB_SMB_SMBCLKOUTEN_MASK                     0x40000000
+#define CCB_SMB_SMBCLKOUTEN_SHIFT                    30
+
+#define CCB_SMB_SMBDATAIN_MASK                       0x20000000
+#define CCB_SMB_SMBDATAIN_SHIFT                      29
+
+#define CCB_SMB_SMBDATAOUTEN_MASK                    0x10000000
+#define CCB_SMB_SMBDATAOUTEN_SHIFT                   28
+
+#define CCB_SMB_MSTRCMD_REG 0x30
+
+#define CCB_SMB_MSTRSTARTBUSYCMD_MASK                0x80000000
+#define CCB_SMB_MSTRSTARTBUSYCMD_SHIFT               31
+
+#define CCB_SMB_MSTRABORT_MASK                       0x40000000
+#define CCB_SMB_MSTRABORT_SHIFT                      30
+
+#define CCB_SMB_MSTRSTS_MASK                         0x0E000000
+#define CCB_SMB_MSTRSTS_SHIFT                        25
+
+#define CCB_SMB_MSTRSMBUSPROTO_MASK                  0x00001E00
+#define CCB_SMB_MSTRSMBUSPROTO_SHIFT                 9
+
+#define CCB_SMB_MSTRPEC_MASK                         0x00000100
+#define CCB_SMB_MSTRPEC_SHIFT                        8
+
+#define CCB_SMB_MSTRRDBYTECNT_MASK                   0x000000FF
+#define CCB_SMB_MSTRRDBYTECNT_SHIFT                  0
+
+#define CCB_SMB_SLVCMD_REG 0x34
+
+#define CCB_SMB_SLVSTARTBUSYCMD_MASK                 0x80000000
+#define CCB_SMB_SLVSTARTBUSYCMD_SHIFT                31
+
+#define CCB_SMB_SLVABORT_MASK                        0x40000000
+#define CCB_SMB_SLVABORT_SHIFT                       30
+
+#define CCB_SMB_SLVSTS_MASK                          0x03800000
+#define CCB_SMB_SLVSTS_SHIFT                         23
+
+#define CCB_SMB_SLVPEC_MASK                          0x00000100
+#define CCB_SMB_SLVPEC_SHIFT                         8
+
+#define CCB_SMB_EVTEN_REG 0x38
+
+#define CCB_SMB_MSTRRXFIFOFULLEN_MASK                0x80000000
+#define CCB_SMB_MSTRRXFIFOFULLEN_SHIFT               31
+
+#define CCB_SMB_MSTRRXFIFOTHRHITEN_MASK              0x40000000
+#define CCB_SMB_MSTRRXFIFOTHRHITEN_SHIFT             30
+
+#define CCB_SMB_MSTRRXEVTEN_MASK                     0x20000000
+#define CCB_SMB_MSTRRXEVTEN_SHIFT                    29
+
+#define CCB_SMB_MSTRSTARTBUSYEN_MASK                 0x10000000
+#define CCB_SMB_MSTRSTARTBUSYEN_SHIFT                28
+
+#define CCB_SMB_MSTRTXUNDEN_MASK                     0x08000000
+#define CCB_SMB_MSTRTXUNDEN_SHIFT                    27
+
+#define CCB_SMB_SLVRXFIFOFULLEN_MASK                 0x04000000
+#define CCB_SMB_SLVRXFIFOFULLEN_SHIFT                26
+
+#define CCB_SMB_SLVRXFIFOTHRHITEN_MASK               0x02000000
+#define CCB_SMB_SLVRXFIFOTHRHITEN_SHIFT              25
+
+#define CCB_SMB_SLVRXEVTEN_MASK                      0x01000000
+#define CCB_SMB_SLVRXEVTEN_SHIFT                     24
+
+#define CCB_SMB_SLVSTARTBUSYEN_MASK                  0x00800000
+#define CCB_SMB_SLVSTARTBUSYEN_SHIFT                 23
+
+#define CCB_SMB_SLVTXUNDEN_MASK                      0x00400000
+#define CCB_SMB_SLVTXUNDEN_SHIFT                     22
+
+#define CCB_SMB_SLVRDEVTEN_MASK                      0x00200000
+#define CCB_SMB_SLVRDEVTEN_SHIFT                     21
+
+#define CCB_SMB_EVTSTS_REG 0x3C
+
+#define CCB_SMB_MSTRRXFIFOFULLSTS_MASK               0x80000000
+#define CCB_SMB_MSTRRXFIFOFULLSTS_SHIFT              31
+
+#define CCB_SMB_MSTRRXFIFOTHRHITSTS_MASK             0x40000000
+#define CCB_SMB_MSTRRXFIFOTHRHITSTS_SHIFT            30
+
+#define CCB_SMB_MSTRRXEVTSTS_MASK                    0x20000000
+#define CCB_SMB_MSTRRXEVTSTS_SHIFT                   29
+
+#define CCB_SMB_MSTRSTARTBUSYSTS_MASK                0x10000000
+#define CCB_SMB_MSTRSTARTBUSYSTS_SHIFT               28
+
+#define CCB_SMB_MSTRTXUNDSTS_MASK                    0x08000000
+#define CCB_SMB_MSTRTXUNDSTS_SHIFT                   27
+
+#define CCB_SMB_SLVRXFIFOFULLSTS_MASK                0x04000000
+#define CCB_SMB_SLVRXFIFOFULLSTS_SHIFT               26
+
+#define CCB_SMB_SLVRXFIFOTHRHITSTS_MASK              0x02000000
+#define CCB_SMB_SLVRXFIFOTHRHITSTS_SHIFT             25
+
+#define CCB_SMB_SLVRXEVTSTS_MASK                     0x01000000
+#define CCB_SMB_SLVRXEVTSTS_SHIFT                    24
+
+#define CCB_SMB_SLVSTARTBUSYSTS_MASK                 0x00800000
+#define CCB_SMB_SLVSTARTBUSYSTS_SHIFT                23
+
+#define CCB_SMB_SLVTXUNDSTS_MASK                     0x00400000
+#define CCB_SMB_SLVTXUNDSTS_SHIFT                    22
+
+#define CCB_SMB_SLVRDEVTSTS_MASK                     0x00200000
+#define CCB_SMB_SLVRDEVTSTS_SHIFT                    21
+
+#define CCB_SMB_MSTRDATAWR_REG 0x40
+
+#define CCB_SMB_MSTRWRSTS_MASK                       0x80000000
+#define CCB_SMB_MSTRWRSTS_SHIFT                      31
+
+#define CCB_SMB_MSTRWRDATA_MASK                      0x000000FF
+#define CCB_SMB_MSTRWRDATA_SHIFT                     0
+
+#define CCB_SMB_MSTRDATARD_REG 0x44
+
+#define CCB_SMB_MSTRRDSTS_MASK                       0xC0000000
+#define CCB_SMB_MSTRRDSTS_SHIFT                      30
+
+#define CCB_SMB_MSTRRDPECERR_MASK                    0x20000000
+#define CCB_SMB_MSTRRDPECERR_SHIFT                   29
+
+#define CCB_SMB_MSTRRDDATA_MASK                      0x000000FF
+#define CCB_SMB_MSTRRDDATA_SHIFT                     0
+
+#define CCB_SMB_SLVDATAWR_REG 0x48
+
+#define CCB_SMB_SLVWRSTS_MASK                        0x80000000
+#define CCB_SMB_SLVWRSTS_SHIFT                       31
+
+#define CCB_SMB_SLVWRDATA_MASK                       0x000000FF
+#define CCB_SMB_SLVWRDATA_SHIFT                      0
+
+#define CCB_SMB_SLVDATARD_REG 0x4C
+
+#define CCB_SMB_SLVRDSTS_MASK                        0xC0000000
+#define CCB_SMB_SLVRDSTS_SHIFT                       30
+
+#define CCB_SMB_SLVRDERRSTS_MASK                     0x30000000
+#define CCB_SMB_SLVRDERRSTS_SHIFT                    28
+
+#define CCB_SMB_SLVRDDATA_MASK                       0x000000FF
+#define CCB_SMB_SLVRDDATA_SHIFT                      0
+
+/* --Registers-- */
+
+/* Transaction error codes defined in Master command register (0x30) */
+#define MSTR_STS_XACT_SUCCESS          0
+#define MSTR_STS_LOST_ARB              1
+#define MSTR_STS_NACK_FIRST_BYTE       2
+
+/* NACK on a byte other than
+ * the first byte
+ */
+#define MSTR_STS_NACK_NON_FIRST_BYTE   3
+
+#define MSTR_STS_TTIMEOUT_EXCEEDED     4
+#define MSTR_STS_TX_TLOW_MEXT_EXCEEDED 5
+#define MSTR_STS_RX_TLOW_MEXT_EXCEEDED 6
+
+/* SMBUS protocol values defined in register 0x30 */
+#define SMBUS_PROT_QUICK_CMD               0
+#define SMBUS_PROT_SEND_BYTE               1
+#define SMBUS_PROT_RECV_BYTE               2
+#define SMBUS_PROT_WR_BYTE                 3
+#define SMBUS_PROT_RD_BYTE                 4
+#define SMBUS_PROT_WR_WORD                 5
+#define SMBUS_PROT_RD_WORD                 6
+#define SMBUS_PROT_BLK_WR                  7
+#define SMBUS_PROT_BLK_RD                  8
+#define SMBUS_PROT_PROC_CALL               9
+#define SMBUS_PROT_BLK_WR_BLK_RD_PROC_CALL 10
+
+/* SMBUS Block speed mode */
+#define SMBUS_BLOCK_MODE_100		0
+#define SMBUS_BLOCK_MODE_400		1
+
+#define BUS_BUSY_COUNT         100000 /* Number can be changed later */
+#define IPROC_I2C_INVALID_ADDR 0xFF
+#define IPROC_SMB_MAX_RETRIES   35
+#define I2C_SMBUS_BLOCK_MAX     32
+#define GETREGFLDVAL(regval, mask, startbit) \
+		    (((regval) & (mask)) >> (startbit))
+#define SETREGFLDVAL(regval, fldval, mask, startbit) (regval) = \
+		    ((regval) & ~(mask)) | \
+		    ((fldval) << (startbit))
+
+/* Enum to specify clock speed. The user will provide it during initialization
+ * If needed, it can be changed dynamically
+ */
+enum iproc_smb_clk_freq {
+	I2C_SPEED_100KHZ = 100000,
+	I2C_SPEED_400KHZ = 400000,
+	I2C_SPEED_INVALID = 255
+};
+
+/* This enum will be used to notify the user of status of a data transfer
+ * request
+ */
+enum iproc_smb_error_code {
+	I2C_NO_ERR = 0,
+	I2C_TIMEOUT_ERR = 1,
+
+	/* Invalid parameter(s) passed to the driver */
+	I2C_INVALID_PARAM_ERR = 2,
+
+	/* The driver API was called before the present
+	 * transfer was completed
+	 */
+	I2C_OPER_IN_PROGRESS = 3,
+
+	/* Transfer aborted unexpectedly, for example a NACK
+	 * received, before last byte was read/written
+	 */
+	I2C_OPER_ABORT_ERR = 4,
+
+	/* Feature or function not supported
+	 * (e.g., 10-bit addresses, or clock speeds
+	 * other than 100KHz, 400KHz)
+	 */
+	I2C_FUNC_NOT_SUPPORTED = 5,
+};
+
+/* Structure used to pass information to read/write functions. */
+struct iproc_xact_info {
+	unsigned char command;
+	unsigned char *data;
+	unsigned int size;
+	unsigned short flags; /* used for specifying PEC, 10-bit addresses */
+	unsigned char smb_proto; /* SMBus protocol */
+	unsigned int cmd_valid; /* true if command is valid else false */
+};
+
+#endif /* __IPROC_I2C_H__ */
-- 
2.17.1


    

[U-Boot] [PATCH 1/1] drivers: i2c: Add brcm iproc I2C driver support

Vladimir Olovyannikov

Heiko Schocher

Rayagonda Kokatanur

Rayagonda Kokatanur

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participants (3)