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| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2013-02-07 14:24:26 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-02-11 20:58:34 +0100 |
| commit | 43e99fa0076301b6ac379c5d5278f894c0565a85 (patch) | |
| tree | 472007010aea95a868ccc416e62a4b4a161a34d6 | |
| parent | 86024a9f70d0d38a03586624eff07692cff62bc4 (diff) | |
| download | barebox-43e99fa0076301b6ac379c5d5278f894c0565a85.tar.gz barebox-43e99fa0076301b6ac379c5d5278f894c0565a85.tar.xz | |
mx28evk: add m25p80 flash via ssp2
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/boards/freescale-mx28-evk/mx28-evk.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/boards/freescale-mx28-evk/mx28-evk.c b/arch/arm/boards/freescale-mx28-evk/mx28-evk.c index 4311473e6..2e866a335 100644 --- a/arch/arm/boards/freescale-mx28-evk/mx28-evk.c +++ b/arch/arm/boards/freescale-mx28-evk/mx28-evk.c @@ -30,6 +30,7 @@ #include <mach/mci.h> #include <mach/fb.h> #include <mach/ocotp.h> +#include <spi/spi.h> #include <asm/armlinux.h> #include <asm/mmu.h> @@ -126,6 +127,12 @@ static const uint32_t mx28evk_pads[] = { GPMI_ALE | VE_3_3V, GPMI_CLE | VE_3_3V, GPMI_RESETN, /* act as WP, external PU */ + + /* SSP */ + SSP2_D0 | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* MISO DO */ + SSP2_D3 | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* SS0 !CS */ + SSP2_CMD | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* MOSI DIO */ + SSP2_SCK | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* CLK */ }; static struct mxs_mci_platform_data mci_pdata = { @@ -225,6 +232,19 @@ static int mx28_evk_mem_init(void) } mem_initcall(mx28_evk_mem_init); +static const struct spi_board_info mx28evk_spi_board_info[] = { + { + .name = "m25p80", + /* + * we leave this with the lower frequency + * as the ssp unit otherwise locks up + */ + .max_speed_hz = 32000000, + .bus_num = 2, + .chip_select = 0, + } +}; + static int mx28_evk_devices_init(void) { int i; @@ -235,8 +255,11 @@ static int mx28_evk_devices_init(void) /* enable IOCLK0 to run at the PLL frequency */ imx_set_ioclk(0, 480000000); + imx_set_ioclk(1, 320000000); /* run the SSP unit clock at 100 MHz */ imx_set_sspclk(0, 100000000, 1); + /* run the SSP unit 2 clock at 160Mhz */ + imx_set_sspclk(2, 160000000, 1); armlinux_set_bootparams((void *)IMX_MEMORY_BASE + 0x100); armlinux_set_architecture(MACH_TYPE_MX28EVK); @@ -259,6 +282,12 @@ static int mx28_evk_devices_init(void) add_generic_device("mxs_nand", 0, NULL, MXS_GPMI_BASE, 0x2000, IORESOURCE_MEM, NULL); + spi_register_board_info(mx28evk_spi_board_info, + ARRAY_SIZE(mx28evk_spi_board_info)); + + add_generic_device("mxs_spi", 2, NULL, IMX_SSP2_BASE, 0x2000, + IORESOURCE_MEM, NULL); + return 0; } device_initcall(mx28_evk_devices_init); |