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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
This commit is contained in:
Dmitry Baryshkov 2023-01-13 14:05:36 +02:00 committed by Bjorn Andersson
parent fe8a500534
commit 72537606f0
1 changed files with 6 additions and 0 deletions
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6
drivers/clk/qcom/clk-cpu-8996.c
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@ -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);
}