Hi Ye,
On 11/09/2014 05:13, Ye.Li wrote:
Add I2C1 pin and pad settings, and enable the MXC I2C driver.
I see two different topics in this patch:
1. Add I2C1 pins to mx6sl pins. This is general, and not related to a specific board.
2. Add I2C1 support to 6slevk board, as in subject.
Please spliut this patch to address ewach related issue.
Thanks, Stefano Babic
Signed-off-by: Ye.Li B37916@freescale.com
Changes since v1:
- None
Changes since v2:
- None
arch/arm/include/asm/arch-mx6/mx6sl_pins.h | 5 +++++ board/freescale/mx6slevk/mx6slevk.c | 26 ++++++++++++++++++++++++++ include/configs/mx6slevk.h | 6 ++++++ 3 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h index 045ccc4..ac84270 100644 --- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h +++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h @@ -34,5 +34,10 @@ enum { MX6_PAD_FEC_REF_CLK__FEC_REF_OUT = IOMUX_PAD(0x424, 0x134, 0x10, 0x000, 0, 0), MX6_PAD_FEC_RX_ER__GPIO_4_19 = IOMUX_PAD(0x0428, 0x0138, 5, 0x0000, 0, 0), MX6_PAD_FEC_TX_CLK__GPIO_4_21 = IOMUX_PAD(0x0434, 0x0144, 5, 0x0000, 0, 0),
- MX6_PAD_I2C1_SDA__I2C1_SDA = IOMUX_PAD(0x0450, 0x0160, 0x10, 0x0720, 2, 0),
- MX6_PAD_I2C1_SDA__GPIO_3_13 = IOMUX_PAD(0x0450, 0x0160, 5, 0x0000, 0, 0),
- MX6_PAD_I2C1_SCL__I2C1_SCL = IOMUX_PAD(0x044C, 0x015C, 0x10, 0x071C, 2, 0),
- MX6_PAD_I2C1_SCL__GPIO_3_12 = IOMUX_PAD(0x044C, 0x015C, 5, 0x0000, 0, 0),
}; #endif /* __ASM_ARCH_MX6_MX6SL_PINS_H__ */ diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index a990b4c..fedd5c3 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -13,12 +13,14 @@ #include <asm/arch/sys_proto.h> #include <asm/gpio.h> #include <asm/imx-common/iomux-v3.h> +#include <asm/imx-common/mxc_i2c.h> #include <asm/io.h> #include <linux/sizes.h> #include <common.h> #include <fsl_esdhc.h> #include <mmc.h> #include <netdev.h> +#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -37,8 +39,29 @@ DECLARE_GLOBAL_DATA_PTR; #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \ PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+#define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
- PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
- PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
- PAD_CTL_ODE | PAD_CTL_SRE_FAST)
#define ETH_PHY_RESET IMX_GPIO_NR(4, 21)
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+/* I2C1 for PMIC */ +struct i2c_pads_info i2c_pad_info0 = {
- .sda = {
.i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC,.gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC,.gp = IMX_GPIO_NR(3, 13),- },
- .scl = {
.i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC,.gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC,.gp = IMX_GPIO_NR(3, 12),- },
+};
int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); @@ -162,6 +185,9 @@ int board_init(void) #ifdef CONFIG_FEC_MXC setup_fec(); #endif
- setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
- return 0;
}
diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h index 3d05a64..bf5066f 100644 --- a/include/configs/mx6slevk.h +++ b/include/configs/mx6slevk.h @@ -60,6 +60,12 @@ #define CONFIG_PHYLIB #define CONFIG_PHY_SMSC
+/* I2C Configs */ +#define CONFIG_CMD_I2C +#define CONFIG_SYS_I2C +#define CONFIG_SYS_I2C_MXC +#define CONFIG_SYS_I2C_SPEED 100000
/* allow to overwrite serial and ethaddr */ #define CONFIG_ENV_OVERWRITE #define CONFIG_CONS_INDEX 1