From a9060f89d9ad4e806c69acb1ea5ebdaeaa91e54b Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 18 Mar 2013 19:26:40 +0100 Subject: [PATCH] ARM: shmobile: armadillo800eva: add a fixed voltage regulator for SDHI1 The SDHI1 power supply on armadillo800eva can be switched on and off. In the current version this is not used and the regulator is hard-wired to "on." This patch switches SDHI1 to a proper fixed-voltage regulator, using a GPIO to enable and disable it. Both SDHI0 and SDHI1 ports shall now be specifying the MMC_CAP_POWER_OFF_CARD MMC capability. Both interfaces tested with an SDIO card. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-armadillo800eva.c | 45 ++++++++++++++++++++------ 1 file changed, 36 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c index f322a18..7a78f94 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva.c @@ -559,8 +559,6 @@ static struct platform_device gpio_keys_device = { /* Fixed 3.3V regulator to be used by SDHI1, MMCIF */ static struct regulator_consumer_supply fixed3v3_power_consumers[] = { - REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.1"), - REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.1"), REGULATOR_SUPPLY("vmmc", "sh_mmcif"), REGULATOR_SUPPLY("vqmmc", "sh_mmcif"), }; @@ -645,6 +643,35 @@ static struct platform_device vccq_sdhi0 = { }, }; +/* Fixed 3.3V regulator to be used by SDHI1 */ +static struct regulator_consumer_supply vcc_sdhi1_consumers[] = { + REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.1"), +}; + +static struct regulator_init_data vcc_sdhi1_init_data = { + .constraints = { + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, + .num_consumer_supplies = ARRAY_SIZE(vcc_sdhi1_consumers), + .consumer_supplies = vcc_sdhi1_consumers, +}; + +static struct fixed_voltage_config vcc_sdhi1_info = { + .supply_name = "SDHI1 Vcc", + .microvolts = 3300000, + .gpio = GPIO_PORT16, + .enable_high = 1, + .init_data = &vcc_sdhi1_init_data, +}; + +static struct platform_device vcc_sdhi1 = { + .name = "reg-fixed-voltage", + .id = 2, + .dev = { + .platform_data = &vcc_sdhi1_info, + }, +}; + /* SDHI0 */ /* * FIXME @@ -658,7 +685,8 @@ static struct platform_device vccq_sdhi0 = { static struct sh_mobile_sdhi_info sdhi0_info = { .dma_slave_tx = SHDMA_SLAVE_SDHI0_TX, .dma_slave_rx = SHDMA_SLAVE_SDHI0_RX, - .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, + .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ | + MMC_CAP_POWER_OFF_CARD, .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_USE_GPIO_CD, .cd_gpio = GPIO_PORT167, }; @@ -699,7 +727,8 @@ static struct platform_device sdhi0_device = { static struct sh_mobile_sdhi_info sdhi1_info = { .dma_slave_tx = SHDMA_SLAVE_SDHI1_TX, .dma_slave_rx = SHDMA_SLAVE_SDHI1_RX, - .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, + .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ | + MMC_CAP_POWER_OFF_CARD, .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_USE_GPIO_CD, /* Port72 cannot generate IRQs, will be used in polling mode. */ .cd_gpio = GPIO_PORT72, @@ -992,6 +1021,8 @@ static struct platform_device *eva_devices[] __initdata = { &lcdc0_device, &gpio_keys_device, &sh_eth_device, + &vcc_sdhi0, + &vccq_sdhi0, &sdhi0_device, &sh_mmcif_device, &hdmi_device, @@ -1002,8 +1033,6 @@ static struct platform_device *eva_devices[] __initdata = { &fsi_wm8978_device, &fsi_hdmi_device, &i2c_gpio_device, - &vcc_sdhi0, - &vccq_sdhi0, }; static const struct pinctrl_map eva_pinctrl_map[] = { @@ -1198,9 +1227,7 @@ static void __init eva_init(void) pinctrl_register_mappings(eva_sdhi1_pinctrl_map, ARRAY_SIZE(eva_sdhi1_pinctrl_map)); - /* SDSLOT2_PON */ - gpio_request_one(16, GPIOF_OUT_INIT_HIGH, NULL); - + platform_device_register(&vcc_sdhi1); platform_device_register(&sdhi1_device); } -- 2.7.4