mirror of https://gitee.com/openkylin/linux.git
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>
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@ -15,6 +15,7 @@ config MACH_MX51_BABBAGE
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select IMX_HAVE_PLATFORM_IMX_I2C
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select IMX_HAVE_PLATFORM_IMX_UART
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select IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
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select IMX_HAVE_PLATFORM_SPI_IMX
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help
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Include support for MX51 Babbage platform, also known as MX51EVK in
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u-boot. This includes specific configurations for the board and its
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@ -20,6 +20,8 @@
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#include <linux/fec.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <linux/spi/flash.h>
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#include <linux/spi/spi.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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@ -41,6 +43,8 @@
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#define BABBAGE_PHY_RESET (1*32 + 5) /* GPIO_2_5 */
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#define BABBAGE_FEC_PHY_RESET (1*32 + 14) /* GPIO_2_14 */
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#define BABBAGE_POWER_KEY (1*32 + 21) /* GPIO_2_21 */
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#define BABBAGE_ECSPI1_CS0 (3*32 + 24) /* GPIO_4_24 */
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#define BABBAGE_ECSPI1_CS1 (3*32 + 25) /* GPIO_4_25 */
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/* USB_CTRL_1 */
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#define MX51_USB_CTRL_1_OFFSET 0x10
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@ -147,6 +151,13 @@ static iomux_v3_cfg_t mx51babbage_pads[] = {
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MX51_PAD_SD2_DATA1__SD2_DATA1,
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MX51_PAD_SD2_DATA2__SD2_DATA2,
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MX51_PAD_SD2_DATA3__SD2_DATA3,
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/* eCSPI1 */
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MX51_PAD_CSPI1_MISO__ECSPI1_MISO,
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MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI,
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MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
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MX51_PAD_CSPI1_SS0__GPIO_4_24,
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MX51_PAD_CSPI1_SS1__GPIO_4_25,
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};
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/* Serial ports */
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@ -310,6 +321,27 @@ static int __init babbage_otg_mode(char *options)
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}
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__setup("otg_mode=", babbage_otg_mode);
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static struct spi_board_info mx51_babbage_spi_board_info[] __initdata = {
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{
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.modalias = "mtd_dataflash",
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.max_speed_hz = 25000000,
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.bus_num = 0,
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.chip_select = 1,
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.mode = SPI_MODE_0,
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.platform_data = NULL,
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},
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};
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static int mx51_babbage_spi_cs[] = {
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BABBAGE_ECSPI1_CS0,
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BABBAGE_ECSPI1_CS1,
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};
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static const struct spi_imx_master mx51_babbage_spi_pdata __initconst = {
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.chipselect = mx51_babbage_spi_cs,
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.num_chipselect = ARRAY_SIZE(mx51_babbage_spi_cs),
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};
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/*
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* Board specific initialization.
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*/
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@ -351,6 +383,10 @@ static void __init mxc_board_init(void)
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imx51_add_sdhci_esdhc_imx(0, NULL);
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imx51_add_sdhci_esdhc_imx(1, NULL);
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spi_register_board_info(mx51_babbage_spi_board_info,
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ARRAY_SIZE(mx51_babbage_spi_board_info));
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imx51_add_ecspi(0, &mx51_babbage_spi_pdata);
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}
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static void __init mx51_babbage_timer_init(void)
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