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path: root/drivers/soc/imx/soc-imx8m.c
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Diffstat (limited to 'drivers/soc/imx/soc-imx8m.c')
-rw-r--r--drivers/soc/imx/soc-imx8m.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
index cc57a384d74d..28144c699b0c 100644
--- a/drivers/soc/imx/soc-imx8m.c
+++ b/drivers/soc/imx/soc-imx8m.c
@@ -11,6 +11,7 @@
#include <linux/platform_device.h>
#include <linux/arm-smccc.h>
#include <linux/of.h>
+#include <linux/clk.h>
#define REV_B1 0x21
@@ -56,6 +57,7 @@ static u32 __init imx8mq_soc_revision(void)
void __iomem *ocotp_base;
u32 magic;
u32 rev;
+ struct clk *clk;
np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-ocotp");
if (!np)
@@ -63,6 +65,13 @@ static u32 __init imx8mq_soc_revision(void)
ocotp_base = of_iomap(np, 0);
WARN_ON(!ocotp_base);
+ clk = of_clk_get_by_name(np, NULL);
+ if (!clk) {
+ WARN_ON(!clk);
+ return 0;
+ }
+
+ clk_prepare_enable(clk);
/*
* SOC revision on older imx8mq is not available in fuses so query
@@ -79,6 +88,8 @@ static u32 __init imx8mq_soc_revision(void)
soc_uid <<= 32;
soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
+ clk_disable_unprepare(clk);
+ clk_put(clk);
iounmap(ocotp_base);
of_node_put(np);