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Commit 374daa4f authored by Fabio Estevam's avatar Fabio Estevam Committed by Sascha Hauer
Browse files

mx51_babbage: Add SPI flash support 



MX51 Babbage has an AT45DB321 SPI Flash connected to eCSPI1.

Add support for it.

Signed-off-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Acked-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
parent 76586d35

arch/arm/mach-mx5/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/arm/mach-mx5/board-mx51_babbage.c

+36 −0
Original line number Diff line number Diff line
@@ -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)