leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: mtk-sd: add source_cg clock support

Browse Source 
Some MediaTek SoC need an additional clock "source_cg". Enable
this new clock. We reuse the same clock name as in the kernel.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
This commit is contained in:
Fabien Parent 2019-03-24 16:46:32 +01:00 committed by Tom Rini
parent 7c798a11d4
commit ba077e5f74
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/mmc/mtk-sd.c
View File

@ -247,6 +247,7 @@ struct msdc_host {
struct msdc_compatible *dev_comp;
struct clk src_clk; /* for SD/MMC bus clock */
struct clk src_clk_cg; /* optional, MSDC source clock control gate */
struct clk h_clk; /* MSDC core clock */
u32 src_clk_freq; /* source clock */
@ -1269,6 +1270,8 @@ static void msdc_ungate_clock(struct msdc_host *host)
{
clk_enable(&host->src_clk);
clk_enable(&host->h_clk);
if (host->src_clk_cg.dev)
clk_enable(&host->src_clk_cg);
}
static int msdc_drv_probe(struct udevice *dev)
@ -1332,6 +1335,8 @@ static int msdc_ofdata_to_platdata(struct udevice *dev)
if (ret < 0)
return ret;
clk_get_by_name(dev, "source_cg", &host->src_clk_cg); /* optional */
#if IS_ENABLED(DM_GPIO)
gpio_request_by_name(dev, "wp-gpios", 0, &host->gpio_wp, GPIOD_IS_IN);
gpio_request_by_name(dev, "cd-gpios", 0, &host->gpio_cd, GPIOD_IS_IN);