From 9f13021f81009449c869ea441620cdc77146dee8 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 15 Sep 2017 21:10:54 +0200 Subject: [PATCH] mmc: uniphier-sd: Add vqmmc regulator support Add initial support for setting the vqmmc regulator. Since we do not support 1V8 modes, set the regulator to 3V3 and enable it. Signed-off-by: Marek Vasut Cc: Masahiro Yamada Cc: Jaehoon Chung Acked-by: Masahiro Yamada --- drivers/mmc/uniphier-sd.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/mmc/uniphier-sd.c b/drivers/mmc/uniphier-sd.c index 3c52161067..0d1203cb76 100644 --- a/drivers/mmc/uniphier-sd.c +++ b/drivers/mmc/uniphier-sd.c @@ -14,6 +14,7 @@ #include #include #include +#include #include DECLARE_GLOBAL_DATA_PTR; @@ -756,6 +757,9 @@ static int uniphier_sd_probe(struct udevice *dev) fdt_addr_t base; struct clk clk; int ret; +#ifdef CONFIG_DM_REGULATOR + struct udevice *vqmmc_dev; +#endif base = devfdt_get_addr(dev); if (base == FDT_ADDR_T_NONE) @@ -765,6 +769,15 @@ static int uniphier_sd_probe(struct udevice *dev) if (!priv->regbase) return -ENOMEM; +#ifdef CONFIG_DM_REGULATOR + ret = device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_dev); + if (!ret) { + /* Set the regulator to 3.3V until we support 1.8V modes */ + regulator_set_value(vqmmc_dev, 3300000); + regulator_set_enable(vqmmc_dev, true); + } +#endif + ret = clk_get_by_index(dev, 0, &clk); if (ret < 0) { dev_err(dev, "failed to get host clock\n"); -- 2.39.5