From: Sandeep Paulraj <[email protected]> The patch does the following
1) Updates the SPI clocks so that they are similar to the DM365. 2) Passes platform data to the SPI driver A short explanation as to how to modify platform data if GPIOs are used as chip selects is also given Signed-off-by: Sandeep Paulraj <[email protected]> --- arch/arm/mach-davinci/dm355.c | 27 +++++++++++++++++++++++---- 1 files changed, 23 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c index b4d709a..8d6122d 100644 --- a/arch/arm/mach-davinci/dm355.c +++ b/arch/arm/mach-davinci/dm355.c @@ -31,7 +31,7 @@ #include <mach/serial.h> #include <mach/common.h> #include <mach/asp.h> - +#include <mach/spi.h> #include "clock.h" #include "mux.h" @@ -365,9 +365,9 @@ static struct davinci_clk dm355_clks[] = { CLK(NULL, "asp1", &asp1_clk), CLK("davinci_mmc.0", NULL, &mmcsd0_clk), CLK("davinci_mmc.1", NULL, &mmcsd1_clk), - CLK(NULL, "spi0", &spi0_clk), - CLK(NULL, "spi1", &spi1_clk), - CLK(NULL, "spi2", &spi2_clk), + CLK("spi_davinci.0", NULL, &spi0_clk), + CLK("spi_davinci.1", NULL, &spi1_clk), + CLK("spi_davinci.2", NULL, &spi2_clk), CLK(NULL, "gpio", &gpio_clk), CLK(NULL, "aemif", &aemif_clk), CLK(NULL, "pwm0", &pwm0_clk), @@ -406,12 +406,31 @@ static struct resource dm355_spi0_resources[] = { */ }; +/* + * The davinci_spi_platform_data can have a "chip_sel" array of GPIOs + * For example : + * static u8 dm355_spi0_chip_sel[] = {23, 45, DAVINCI_SPI_INTERN_CS}; + * This array should then become be a part of the platform data + * .chip_sel = dm355_spi0_chip_sel, + * Appropriately change the 'num_chipselect' in the structure below + */ + +static struct davinci_spi_platform_data dm355_spi0_pdata = { + .version = DAVINCI_SPI_VERSION_1, + .num_chipselect = 2, + .clk_internal = 1, + .cs_hold = 1, + .intr_level = 0, + .poll_mode = 1, +}; + static struct platform_device dm355_spi0_device = { .name = "spi_davinci", .id = 0, .dev = { .dma_mask = &dm355_spi0_dma_mask, .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &dm355_spi0_pdata, }, .num_resources = ARRAY_SIZE(dm355_spi0_resources), .resource = dm355_spi0_resources, -- 1.6.0.4 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
