diff options
| author | Patrice Chotard <patrice.chotard@st.com> | 2017-10-23 10:57:33 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-11-17 07:44:13 -0500 |
| commit | 5f256fe71dd064063f8390926922085c2c7c14fc (patch) | |
| tree | e236c4c469d11328a807bf8c6e7d75ffdea0e80d /drivers | |
| parent | 9035bb7432d33014fd131390c635e634aaacd4d0 (diff) | |
mmc: arm_pl180_mmci: add clock support
Allow to get and enable MMC related clock
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/arm_pl180_mmci.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c index fd57b55848..3de6b12b0c 100644 --- a/drivers/mmc/arm_pl180_mmci.c +++ b/drivers/mmc/arm_pl180_mmci.c @@ -13,6 +13,7 @@ /* #define DEBUG */ #include "common.h" +#include <clk.h> #include <errno.h> #include <malloc.h> #include <mmc.h> @@ -408,17 +409,28 @@ static int arm_pl180_mmc_probe(struct udevice *dev) struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); struct mmc *mmc = &pdata->mmc; struct pl180_mmc_host *host = mmc->priv; + struct clk clk; u32 bus_width; int ret; + ret = clk_get_by_index(dev, 0, &clk); + if (ret < 0) + return ret; + + ret = clk_enable(&clk); + if (ret) { + dev_err(dev, "failed to enable clock\n"); + return ret; + } + strcpy(host->name, "MMC"); host->pwr_init = INIT_PWR; host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 | SDI_CLKCR_CLKEN | SDI_CLKCR_HWFC_EN; host->voltages = VOLTAGE_WINDOW_SD; host->caps = 0; - host->clock_in = MMC_CLOCK_MAX; - host->clock_min = MMC_CLOCK_MIN; + host->clock_in = clk_get_rate(&clk); + host->clock_min = host->clock_in / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1)); host->clock_max = dev_read_u32_default(dev, "max-frequency", MMC_CLOCK_MAX); host->version2 = dev_get_driver_data(dev); |