[PATCH v2 06/14] clk: qcom: cpu-8996: skip ACD init if the setup is valid

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Check whether L2 registers contain correct values and skip programming
if they are valid. This follows the code present downstream.

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);
 }
 
-- 
2.30.2




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux