From mboxrd@z Thu Jan 1 00:00:00 1970 From: michael.williamson@criticallink.com (Michael Williamson) Date: Mon, 31 Jan 2011 19:05:16 -0500 Subject: [PATCH 4/4] davinci: add spi devices support for da830/omap-l137/am17x evm In-Reply-To: <1296518716-5004-1-git-send-email-michael.williamson@criticallink.com> References: <1296518716-5004-1-git-send-email-michael.williamson@criticallink.com> Message-ID: <1296518716-5004-5-git-send-email-michael.williamson@criticallink.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Sekhar Nori This patch adds the on-board SPI flash device to the DA830/OMAP-L137/AM17x EVM. It also registers the SPI flash device to the MTD subsystem. Based on SPI flash device support for MityDSP-L138F platform. Signed-off-by: Michael Williamson --- arch/arm/mach-davinci/board-da830-evm.c | 82 +++++++++++++++++++++++++++++++ 1 files changed, 82 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index b52a3a1..15077a0 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -20,6 +20,8 @@ #include #include #include +#include +#include #include #include @@ -30,6 +32,7 @@ #include #include #include +#include #define DA830_EVM_PHY_ID "" /* @@ -534,6 +537,83 @@ static struct edma_rsv_info da830_edma_rsv[] = { }, }; +static struct davinci_spi_platform_data da830evm_spi0_pdata = { + .version = SPI_VERSION_2, + .num_chipselect = 1, + .intr_line = 1, +}; + +static struct mtd_partition da830evm_spiflash_part[] = { + [0] = { + .name = "DSP-UBL", + .offset = 0, + .size = SZ_8K, + .mask_flags = MTD_WRITEABLE, + }, + [1] = { + .name = "ARM-UBL", + .offset = MTDPART_OFS_APPEND, + .size = SZ_16K + SZ_8K, + .mask_flags = MTD_WRITEABLE, + }, + [2] = { + .name = "U-Boot", + .offset = MTDPART_OFS_APPEND, + .size = SZ_256K - SZ_32K, + .mask_flags = MTD_WRITEABLE, + }, + [3] = { + .name = "U-Boot-Environment", + .offset = MTDPART_OFS_APPEND, + .size = SZ_16K, + .mask_flags = 0, + }, + [4] = { + .name = "Kernel", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + .mask_flags = 0, + }, +}; + +static struct flash_platform_data da830evm_spiflash_data = { + .name = "m25p80", + .parts = da830evm_spiflash_part, + .nr_parts = ARRAY_SIZE(da830evm_spiflash_part), + .type = "w25x32", +}; + +static struct davinci_spi_config da830evm_spiflash_cfg = { + .io_type = SPI_IO_TYPE_DMA, + .c2tdelay = 8, + .t2cdelay = 8, +}; + +static struct spi_board_info da830evm_spi_info[] = { + { + .modalias = "m25p80", + .platform_data = &da830evm_spiflash_data, + .controller_data = &da830evm_spiflash_cfg, + .mode = SPI_MODE_0, + .max_speed_hz = 30000000, + .bus_num = 0, + .chip_select = 0, + }, +}; + +static void __init da830evm_init_spi0(struct spi_board_info *info, unsigned len) +{ + int ret; + + ret = spi_register_board_info(info, len); + if (ret) + pr_warning("failed to register board info : %d\n", ret); + + ret = da8xx_register_spi(0, &da830evm_spi0_pdata); + if (ret) + pr_warning("failed to register spi 0 device : %d\n", ret); +} + static __init void da830_evm_init(void) { struct davinci_soc_info *soc_info = &davinci_soc_info; @@ -590,6 +670,8 @@ static __init void da830_evm_init(void) ret = da8xx_register_rtc(); if (ret) pr_warning("da830_evm_init: rtc setup failed: %d\n", ret); + + da830evm_init_spi0(da830evm_spi_info, ARRAY_SIZE(da830evm_spi_info)); } #ifdef CONFIG_SERIAL_8250_CONSOLE -- 1.7.0.4