From: Patrice Chotard <patrice.chot...@st.com>
Allow to get and enable MMC related clock
Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---
drivers/mmc/arm_pl180_mmci.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 6ee77b1..f060c64 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>
@@ -405,17 +406,28 @@ 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 = 48000000;
- host->clock_min = 400000;
+ 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", 48000000);
host->version2 = dev_get_driver_data(dev);
--
1.9.1
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