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| author | Marek Vasut <marek.vasut@gmail.com> | 2017-09-15 21:10:54 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2017-09-29 11:17:29 +0900 |
| commit | 9f13021f81009449c869ea441620cdc77146dee8 (patch) | |
| tree | a327c7ef83fa8e944c75bb095ad069a235193a21 | |
| parent | d6c40031d5c3f9e899d458a56fa78ecde626ec24 (diff) | |
| download | u-boot-9f13021f81009449c869ea441620cdc77146dee8.tar.gz u-boot-9f13021f81009449c869ea441620cdc77146dee8.tar.xz u-boot-9f13021f81009449c869ea441620cdc77146dee8.zip | |
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 <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
| -rw-r--r-- | drivers/mmc/uniphier-sd.c | 13 |
1 files changed, 13 insertions, 0 deletions
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 <linux/dma-direction.h> #include <linux/io.h> #include <linux/sizes.h> +#include <power/regulator.h> #include <asm/unaligned.h> 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"); |