diff options
| author | Kever Yang | 2016-12-28 11:32:35 +0800 |
|---|---|---|
| committer | Simon Glass | 2017-01-11 20:23:25 -0700 |
| commit | 39fbb56f845431686966a90456bd232f0b355dbd (patch) | |
| tree | 47d2620e92fb93e48ef23d9223de2feb081ca83e /drivers | |
| parent | 1a581460856d87c88e64088dca19fccc6c1be089 (diff) | |
mmc: rockchip_sdhci: add clock init for mmc
Init the clock rate to max-frequency from dts with clock driver api.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/rockchip_sdhci.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c index c56e1a3a1c5..e33e35e4fa5 100644 --- a/drivers/mmc/rockchip_sdhci.c +++ b/drivers/mmc/rockchip_sdhci.c @@ -12,7 +12,9 @@ #include <libfdt.h> #include <malloc.h> #include <sdhci.h> +#include <clk.h> +DECLARE_GLOBAL_DATA_PTR; /* 400KHz is max freq for card ID etc. Use that as min */ #define EMMC_MIN_FREQ 400000 @@ -32,11 +34,24 @@ static int arasan_sdhci_probe(struct udevice *dev) struct rockchip_sdhc_plat *plat = dev_get_platdata(dev); struct rockchip_sdhc *prv = dev_get_priv(dev); struct sdhci_host *host = &prv->host; - int ret; + int max_frequency, ret; + struct clk clk; + + + max_frequency = fdtdec_get_int(gd->fdt_blob, dev->of_offset, + "max-frequency", 0); + ret = clk_get_by_index(dev, 0, &clk); + if (!ret) { + ret = clk_set_rate(&clk, max_frequency); + if (IS_ERR_VALUE(ret)) + printf("%s clk set rate fail!\n", __func__); + } else { + printf("%s fail to get clk\n", __func__); + } host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD; - ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ, + ret = sdhci_setup_cfg(&plat->cfg, host, max_frequency, EMMC_MIN_FREQ); host->mmc = &plat->mmc; |