Re: [PATCH] arm64: dts: qcom: ipq8074: fix the sleep clock frequency

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On 2/25/2022 5:48 PM, Kathiravan Thirumoorthy wrote:

On 2/25/2022 1:27 AM, Bjorn Andersson wrote:
On Fri 11 Feb 06:14 CST 2022, Kathiravan T wrote:

Sleep clock frequency should be 32768Hz. Lets fix it.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 41dac73e243d ("arm64: dts: Add ipq8074 SoC and HK01 board support") Link: https://lore.kernel.org/all/e2a447f8-6024-0369-f698-2027b6edcf9e@xxxxxxxxxxxxxx/
Signed-off-by: Kathiravan T <quic_kathirav@xxxxxxxxxxx>
Can you please confirm this? The documentation for GCC says that the
incoming sleep clock is 32000Hz.

Regards,
Bjorn

Bjorn,

I checked the internal documents and it is derived from the PMIC as 32.7645KHz. I rounded off it to 32768Hz. Looks like GCC documentation is not up-to-date.

All these information is available in the link https://lore.kernel.org/all/e2a447f8-6024-0369-f698-2027b6edcf9e@xxxxxxxxxxxxxx/

Please let me know if you need any further information.

Thanks,

Kathiravan T.

Bjorn,

Gentle Ping.

Thanks,

Kathiravan T.


---
  arch/arm64/boot/dts/qcom/ipq8074.dtsi | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
index 26ba7ce9222c..b6287355ad08 100644
--- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
@@ -13,7 +13,7 @@
      clocks {
          sleep_clk: sleep_clk {
              compatible = "fixed-clock";
-            clock-frequency = <32000>;
+            clock-frequency = <32768>;
              #clock-cells = <0>;
          };
  --
2.7.4




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