[LTSI-3.14,011/894] clk: shmobile: fix setting paretn clock rate

Commit Message

Simon Horman Aug. 28, 2014, 6:52 a.m. UTC

From: Ben Dooks <[e-mail]>

If the driver needs to change a clock rate, then it must be propogated
through the MSTP clock to the parent clock (such as shdi0 -> sd0). Without
this we cannot up-rate default clocks which are really slow (such as the
mmcif1 which defaults to 12MHz where it could be running at 97MHz)

Signed-off-by: Ben Dooks <[e-mail]>
Acked-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Mike Turquette <[e-mail]>
(cherry picked from commit e44df332f30bf3040c60c1ed6674d1431fdb48b9)
Signed-off-by: Simon Horman <[e-mail]>
---
 drivers/clk/shmobile/clk-mstp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c
index 42d5912..2e5810c 100644
--- a/drivers/clk/shmobile/clk-mstp.c
+++ b/drivers/clk/shmobile/clk-mstp.c
@@ -137,7 +137,7 @@  cpg_mstp_clock_register(const char *name, const char *parent_name,
 
 	init.name = name;
 	init.ops = &cpg_mstp_clock_ops;
-	init.flags = CLK_IS_BASIC;
+	init.flags = CLK_IS_BASIC | CLK_SET_RATE_PARENT;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;