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mx51_babbage: Add SPI flash support

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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>
This commit is contained in:
Fabio Estevam 2010-11-10 07:00:02 -08:00 committed by Sascha Hauer
parent 76586d35eb
commit 374daa4f90
2 changed files with 37 additions and 0 deletions
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1
arch/arm/mach-mx5/Kconfig
View File

@ -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

36
arch/arm/mach-mx5/board-mx51_babbage.c
View File

@ -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)