diff mbox series

[v3,06/14] clk: qcom: cpu-8996: skip ACD init if the setup is valid

Message ID 20230113120544.59320-7-dmitry.baryshkov@linaro.org
State Accepted
Commit 72537606f03c8007029211867a7fa63d2d41b8b8
Headers show
Series clk: qcom: cpu-8996: stability fixes | expand

Commit Message

Dmitry Baryshkov Jan. 13, 2023, 12:05 p.m. UTC 
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>
---
 drivers/clk/qcom/clk-cpu-8996.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

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);
 }