Enable clock as a part of probing in order to avoid problems on SoCs
that do not have this block ungated out of reset (e.g. i.MX7).
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
drivers/dma/apbh_dma.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/dma/apbh_dma.c b/drivers/dma/apbh_dma.c
index b84c0f798..79f25109f 100644
--- a/drivers/dma/apbh_dma.c
+++ b/drivers/dma/apbh_dma.c
@@ -17,6 +17,7 @@
#include <dma/apbh-dma.h>
#include <stmp-device.h>
+#include <linux/clk.h>
#include <linux/list.h>
#include <linux/err.h>
#include <common.h>
@@ -55,6 +56,7 @@ enum mxs_dma_id {
struct apbh_dma {
void __iomem *regs;
+ struct clk *clk;
enum mxs_dma_id id;
};
@@ -606,6 +608,17 @@ static int apbh_dma_probe(struct device_d *dev)
apbh->id = id;
+ apbh->clk = clk_get(dev, NULL);
+ if (IS_ERR(apbh->clk))
+ return PTR_ERR(apbh->clk);
+
+ ret = clk_enable(apbh->clk);
+ if (ret) {
+ dev_err(dev, "Failed to enable clock: %s\n",
+ strerror(ret));
+ return ret;
+ }
+
ret = stmp_reset_block(apbh->regs, 0);
if (ret)
return ret;
--
2.14.3
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