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mmc: meson-gx: enable input clocks

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Until now, the mmc clock was left in a good enough state by the ROM
code to be used by the controller. However on some SoC, if the ROM
code finds a bootloader on USB or SPI, it might leave the MMC clock
in state the controller cannot work with.

Enable the input clocks provided to the mmc controller. While the
u-boot mmc controller driver is not doing fancy settings like the Linux,
it at least needs to make these clocks are running.

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Jerome Brunet 2020-03-05 12:12:36 +01:00 committed by Neil Armstrong
parent 423aabc436
commit 0392416fb1
1 changed files with 13 additions and 1 deletions
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14
drivers/mmc/meson_gx_mmc.c
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@ -4,6 +4,7 @@
*/
#include <common.h>
#include <clk.h>
#include <cpu_func.h>
#include <dm.h>
#include <fdtdec.h>
@ -241,12 +242,23 @@ static int meson_mmc_probe(struct udevice *dev)
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct mmc *mmc = &pdata->mmc;
struct mmc_config *cfg = &pdata->cfg;
struct clk_bulk clocks;
uint32_t val;
int ret;
#ifdef CONFIG_PWRSEQ
struct udevice *pwr_dev;
int ret;
#endif
/* Enable the clocks feeding the MMC controller */
ret = clk_get_bulk(dev, &clocks);
if (ret)
return ret;
ret = clk_enable_bulk(&clocks);
if (ret)
return ret;
cfg->voltages = MMC_VDD_33_34 | MMC_VDD_32_33 |
MMC_VDD_31_32 | MMC_VDD_165_195;
cfg->host_caps = MMC_MODE_8BIT | MMC_MODE_4BIT |