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@xxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/clk/qcom/clk-cpu-8996.c | 6 ++++++
1 file changed, 6 insertions(+)
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);
}
--
2.39.0
