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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>
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1 changed files with 13 additions and 0 deletions
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@ -14,6 +14,7 @@
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#include <linux/dma-direction.h>
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#include <linux/io.h>
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#include <linux/sizes.h>
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#include <power/regulator.h>
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#include <asm/unaligned.h>
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DECLARE_GLOBAL_DATA_PTR;
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@ -756,6 +757,9 @@ static int uniphier_sd_probe(struct udevice *dev)
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fdt_addr_t base;
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struct clk clk;
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int ret;
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#ifdef CONFIG_DM_REGULATOR
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struct udevice *vqmmc_dev;
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#endif
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base = devfdt_get_addr(dev);
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if (base == FDT_ADDR_T_NONE)
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@ -765,6 +769,15 @@ static int uniphier_sd_probe(struct udevice *dev)
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if (!priv->regbase)
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return -ENOMEM;
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#ifdef CONFIG_DM_REGULATOR
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ret = device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_dev);
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if (!ret) {
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/* Set the regulator to 3.3V until we support 1.8V modes */
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regulator_set_value(vqmmc_dev, 3300000);
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regulator_set_enable(vqmmc_dev, true);
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}
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#endif
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret < 0) {
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dev_err(dev, "failed to get host clock\n");
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