diff options
| author | Fabio Estevam <fabioestevam@yahoo.com> | 2010-11-10 07:00:02 -0800 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-11-24 10:09:03 +0100 |
| commit | 374daa4f9019f75da1addb3f31a22df1966a5baa (patch) | |
| tree | 26ea81438e5d17c79502c917fcf31ddc173fa39e /arch/arm | |
| parent | 76586d35eb31192bf3f395c2e02cef8a57e3558c (diff) | |
mx51_babbage: Add SPI flash support
MX51 Babbage has an AT45DB321 SPI Flash connected to eCSPI1.
Add support for it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-mx5/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mx5/board-mx51_babbage.c | 36 |
2 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/Kconfig b/arch/arm/mach-mx5/Kconfig index 14438426930..88f0c66d13a 100644 --- a/arch/arm/mach-mx5/Kconfig +++ b/arch/arm/mach-mx5/Kconfig @@ -15,6 +15,7 @@ config MACH_MX51_BABBAGE select IMX_HAVE_PLATFORM_IMX_I2C select IMX_HAVE_PLATFORM_IMX_UART select IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX + select IMX_HAVE_PLATFORM_SPI_IMX help Include support for MX51 Babbage platform, also known as MX51EVK in u-boot. This includes specific configurations for the board and its diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c index 0df50d214db..ef328433df8 100644 --- a/arch/arm/mach-mx5/board-mx51_babbage.c +++ b/arch/arm/mach-mx5/board-mx51_babbage.c @@ -20,6 +20,8 @@ #include <linux/fec.h> #include <linux/gpio_keys.h> #include <linux/input.h> +#include <linux/spi/flash.h> +#include <linux/spi/spi.h> #include <mach/common.h> #include <mach/hardware.h> @@ -41,6 +43,8 @@ #define BABBAGE_PHY_RESET (1*32 + 5) /* GPIO_2_5 */ #define BABBAGE_FEC_PHY_RESET (1*32 + 14) /* GPIO_2_14 */ #define BABBAGE_POWER_KEY (1*32 + 21) /* GPIO_2_21 */ +#define BABBAGE_ECSPI1_CS0 (3*32 + 24) /* GPIO_4_24 */ +#define BABBAGE_ECSPI1_CS1 (3*32 + 25) /* GPIO_4_25 */ /* USB_CTRL_1 */ #define MX51_USB_CTRL_1_OFFSET 0x10 @@ -147,6 +151,13 @@ static iomux_v3_cfg_t mx51babbage_pads[] = { MX51_PAD_SD2_DATA1__SD2_DATA1, MX51_PAD_SD2_DATA2__SD2_DATA2, MX51_PAD_SD2_DATA3__SD2_DATA3, + + /* eCSPI1 */ + MX51_PAD_CSPI1_MISO__ECSPI1_MISO, + MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI, + MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK, + MX51_PAD_CSPI1_SS0__GPIO_4_24, + MX51_PAD_CSPI1_SS1__GPIO_4_25, }; /* Serial ports */ @@ -310,6 +321,27 @@ static int __init babbage_otg_mode(char *options) } __setup("otg_mode=", babbage_otg_mode); +static struct spi_board_info mx51_babbage_spi_board_info[] __initdata = { + { + .modalias = "mtd_dataflash", + .max_speed_hz = 25000000, + .bus_num = 0, + .chip_select = 1, + .mode = SPI_MODE_0, + .platform_data = NULL, + }, +}; + +static int mx51_babbage_spi_cs[] = { + BABBAGE_ECSPI1_CS0, + BABBAGE_ECSPI1_CS1, +}; + +static const struct spi_imx_master mx51_babbage_spi_pdata __initconst = { + .chipselect = mx51_babbage_spi_cs, + .num_chipselect = ARRAY_SIZE(mx51_babbage_spi_cs), +}; + /* * Board specific initialization. */ @@ -351,6 +383,10 @@ static void __init mxc_board_init(void) imx51_add_sdhci_esdhc_imx(0, NULL); imx51_add_sdhci_esdhc_imx(1, NULL); + + spi_register_board_info(mx51_babbage_spi_board_info, + ARRAY_SIZE(mx51_babbage_spi_board_info)); + imx51_add_ecspi(0, &mx51_babbage_spi_pdata); } static void __init mx51_babbage_timer_init(void) |