[U-Boot] [PATCH v2 2/2] mmc: rockchip: add clock init

Kever Yang
2016-07-29T06:42:05Z

Init clock for eMMC controller.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
---

Changes in v2:
- update base on comments from Jaehoon Chung

drivers/mmc/rockchip_sdhci.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index 023c29b..fda3d45 100644
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -7,6 +7,7 @@
*/

#include <common.h>
+#include <clk.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
@@ -32,15 +33,23 @@ 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;
+ struct clk clk;
int ret;
u32 caps;
+ ulong max_freq = CONFIG_ROCKCHIP_SDHCI_MAX_FREQ;

host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;

+ ret = clk_get_by_index(dev, 0, &clk);
+ if (ret < 0)
+ debug("%s get clock fail\n", __func__);
+ else
+ max_freq = clk_set_rate(&clk, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ);
+
caps = sdhci_readl(host, SDHCI_CAPABILITIES);
ret = sdhci_setup_cfg(&plat->cfg, dev->name, host->bus_width,
- caps, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ, EMMC_MIN_FREQ,
+ caps, max_freq, EMMC_MIN_FREQ,
host->version, host->quirks, 0);

host->mmc = &plat->mmc;
--
1.9.1