The clock source for MSM8916 cpu cores is like below.
|\
a53pll --------| \ a53mux +------+
| |------------| cpus |
gpll0_vote --------| / +------+
|/
So clock a53mux rather than a53pll is actually the clock source of cpu
cores. It makes more sense to flag a53mux rather than a53pll as
critical, since a53pll could be irrelevant if a53mux switches its parent
clock to be gpll0_vote.
Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
---
drivers/clk/qcom/a53-pll.c | 1 -
drivers/clk/qcom/apcs-msm8916.c | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/clk/qcom/a53-pll.c b/drivers/clk/qcom/a53-pll.c
index 45cfc57bff92..8614b0b0e82c 100644
--- a/drivers/clk/qcom/a53-pll.c
+++ b/drivers/clk/qcom/a53-pll.c
@@ -70,7 +70,6 @@ static int qcom_a53pll_probe(struct platform_device *pdev)
init.parent_names = (const char *[]){ "xo" };
init.num_parents = 1;
init.ops = &clk_pll_sr2_ops;
- init.flags = CLK_IS_CRITICAL;
pll->clkr.hw.init = &init;
ret = devm_clk_register_regmap(dev, &pll->clkr);
diff --git a/drivers/clk/qcom/apcs-msm8916.c b/drivers/clk/qcom/apcs-msm8916.c
index cf69a97d0439..d7ac6d6b15b6 100644
--- a/drivers/clk/qcom/apcs-msm8916.c
+++ b/drivers/clk/qcom/apcs-msm8916.c
@@ -65,7 +65,7 @@ static int qcom_apcs_msm8916_clk_probe(struct platform_device *pdev)
init.parent_data = pdata;
init.num_parents = ARRAY_SIZE(pdata);
init.ops = &clk_regmap_mux_div_ops;
- init.flags = CLK_SET_RATE_PARENT;
+ init.flags = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT;
a53cc->clkr.hw.init = &init;
a53cc->clkr.regmap = regmap;
--
2.17.1
