Now zynq spi driver platform data is controlled by devicetree, enable the status by saying "okay" on respective board dts to use the devicetree generated platdata.
Ex: &spi1 { status = "okay"; };
Signed-off-by: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com Cc: Simon Glass sjg@chromium.org Cc: Michal Simek michal.simek@xilinx.com Cc: Siva Durga Prasad Paladugu sivadur@xilinx.com --- arch/arm/dts/zynq-7000.dtsi | 2 ++ arch/arm/include/asm/arch-zynq/hardware.h | 2 -- doc/device-tree-bindings/spi/spi-zynq.txt | 2 ++ drivers/spi/zynq_spi.c | 23 +++++++++++++---------- 4 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/arch/arm/dts/zynq-7000.dtsi b/arch/arm/dts/zynq-7000.dtsi index f66f8dc..9207159 100644 --- a/arch/arm/dts/zynq-7000.dtsi +++ b/arch/arm/dts/zynq-7000.dtsi @@ -117,6 +117,7 @@ interrupts = <0 26 4>; clocks = <&clkc 25>, <&clkc 34>; clock-names = "ref_clk", "pclk"; + spi-max-frequency = <166666700>; #address-cells = <1>; #size-cells = <0>; }; @@ -129,6 +130,7 @@ interrupts = <0 49 4>; clocks = <&clkc 26>, <&clkc 35>; clock-names = "ref_clk", "pclk"; + spi-max-frequency = <166666700>; #address-cells = <1>; #size-cells = <0>; }; diff --git a/arch/arm/include/asm/arch-zynq/hardware.h b/arch/arm/include/asm/arch-zynq/hardware.h index e2e0b73..df9b06b 100644 --- a/arch/arm/include/asm/arch-zynq/hardware.h +++ b/arch/arm/include/asm/arch-zynq/hardware.h @@ -19,8 +19,6 @@ #define ZYNQ_SDHCI_BASEADDR1 0xE0101000 #define ZYNQ_I2C_BASEADDR0 0xE0004000 #define ZYNQ_I2C_BASEADDR1 0xE0005000 -#define ZYNQ_SPI_BASEADDR0 0xE0006000 -#define ZYNQ_SPI_BASEADDR1 0xE0007000 #define ZYNQ_QSPI_BASEADDR 0xE000D000 #define ZYNQ_SMC_BASEADDR 0xE000E000 #define ZYNQ_NAND_BASEADDR 0xE1000000 diff --git a/doc/device-tree-bindings/spi/spi-zynq.txt b/doc/device-tree-bindings/spi/spi-zynq.txt index a7c2757..f397a36 100644 --- a/doc/device-tree-bindings/spi/spi-zynq.txt +++ b/doc/device-tree-bindings/spi/spi-zynq.txt @@ -11,6 +11,7 @@ Required properties: - clocks : Clock phandles (see clock bindings for details). - clock-names : List of input clock names - "ref_clk", "pclk" (See clock bindings for details). +- spi-max-frequency : Maximum SPI clocking speed of device in Hz
Example:
@@ -22,6 +23,7 @@ Example: interrupts = <0 26 4>; clocks = <&clkc 25>, <&clkc 34>; clock-names = "ref_clk", "pclk"; + spi-max-frequency = <166666700>; #address-cells = <1>; #size-cells = <0>; } ; diff --git a/drivers/spi/zynq_spi.c b/drivers/spi/zynq_spi.c index 62edbbe..df4a99e 100644 --- a/drivers/spi/zynq_spi.c +++ b/drivers/spi/zynq_spi.c @@ -13,9 +13,12 @@ #include <errno.h> #include <malloc.h> #include <spi.h> +#include <fdtdec.h> #include <asm/io.h> #include <asm/arch/hardware.h>
+DECLARE_GLOBAL_DATA_PTR; + /* zynq spi register bit masks ZYNQ_SPI_<REG>_<BIT>_MASK */ #define ZYNQ_SPI_CR_MSA_MASK BIT(15) /* Manual start enb */ #define ZYNQ_SPI_CR_MCS_MASK BIT(14) /* Manual chip select */ @@ -64,22 +67,22 @@ struct zynq_spi_priv { u32 freq; /* required frequency */ };
-static inline struct zynq_spi_regs *get_zynq_spi_regs(struct udevice *bus) -{ - if (bus->seq) - return (struct zynq_spi_regs *)ZYNQ_SPI_BASEADDR1; - else - return (struct zynq_spi_regs *)ZYNQ_SPI_BASEADDR0; -} - static int zynq_spi_ofdata_to_platdata(struct udevice *bus) { struct zynq_spi_platdata *plat = bus->platdata; + const void *blob = gd->fdt_blob; + int node = bus->of_offset; + + plat->regs = (struct zynq_spi_regs *)fdtdec_get_addr(blob, node, "reg");
- plat->regs = get_zynq_spi_regs(bus); - plat->frequency = 166666700; + /* FIXME: Use 250MHz as a suitable default */ + plat->frequency = fdtdec_get_int(blob, node, "spi-max-frequency", + 250000000); plat->speed_hz = plat->frequency / 2;
+ debug("zynq_spi_ofdata_to_platdata: regs=%p max-frequency=%d\n", + plat->regs, plat->frequency); + return 0; }