diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-01-13 15:05:36 +0300 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-01-19 06:06:51 +0300 |
| commit | 72537606f03c8007029211867a7fa63d2d41b8b8 (patch) | |
| tree | 005f44c62cf7c9c4e82066990a5390f7f3c6c010 /drivers/clk/qcom/clk-cpu-8996.c | |
| parent | fe8a500534e74de08a2878205404f3c858629da8 (diff) | |
| download | linux-72537606f03c8007029211867a7fa63d2d41b8b8.tar.xz | |
clk: qcom: cpu-8996: skip ACD init if the setup is valid
Check whether L2 registers contain correct values and skip programming
if they are valid. This follows the code present downstream.
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230113120544.59320-7-dmitry.baryshkov@linaro.org
Diffstat (limited to 'drivers/clk/qcom/clk-cpu-8996.c')
| -rw-r--r-- | drivers/clk/qcom/clk-cpu-8996.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/clk/qcom/clk-cpu-8996.c b/drivers/clk/qcom/clk-cpu-8996.c index 0e0c00d44c6f..7e5246ca7e7f 100644 --- a/drivers/clk/qcom/clk-cpu-8996.c +++ b/drivers/clk/qcom/clk-cpu-8996.c @@ -472,10 +472,15 @@ static void __iomem *base; static void qcom_cpu_clk_msm8996_acd_init(void __iomem *base) { u64 hwid; + u32 val; unsigned long flags; spin_lock_irqsave(&qcom_clk_acd_lock, flags); + val = kryo_l2_get_indirect_reg(L2ACDTD_REG); + if (val == 0x00006a11) + goto out; + hwid = read_cpuid_mpidr() & CPU_AFINITY_MASK; kryo_l2_set_indirect_reg(L2ACDTD_REG, 0x00006a11); @@ -492,6 +497,7 @@ static void qcom_cpu_clk_msm8996_acd_init(void __iomem *base) writel(0xf, base + PERFCL_REG_OFFSET + SSSCTL_OFFSET); } +out: spin_unlock_irqrestore(&qcom_clk_acd_lock, flags); } |