Re: [PATCH v4 5/6] arm64: dts: qcom: sm4450-qrd: add QRD4450 uart support

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在 9/24/2023 3:12 AM, Dmitry Baryshkov 写道:
On Fri, 22 Sept 2023 at 11:13, Tengfei Fan <quic_tengfan@xxxxxxxxxxx> wrote:

Add uart support for QRD4450 for enable uart console.

Signed-off-by: Tengfei Fan <quic_tengfan@xxxxxxxxxxx>
---
  arch/arm64/boot/dts/qcom/sm4450-qrd.dts | 19 +++++++++++++++++--
  1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm4450-qrd.dts b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
index 00a1c81ca397..e354bad57a9e 100644
--- a/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
+++ b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
@@ -10,9 +10,24 @@
         model = "Qualcomm Technologies, Inc. SM4450 QRD";
         compatible = "qcom,sm4450-qrd", "qcom,sm4450";

-       aliases { };
+       aliases {
+               serial0 = &uart7;
+       };

         chosen {
-               bootargs = "console=hvc0";
+               stdout-path = "serial0:115200n8";
         };
  };
+
+&qupv3_id_0 {
+       status = "okay";
+};
+
+&tlmm {
+       /* Reserved for other subsystems */
+       gpio-reserved-ranges = <0 4>, <136 1>;
+};

Is this also related to the UART support? it looks like it is a
separate patch, which should likely have the Fixes tag
Hi Dmitry,
This is related to the pinctrl support, UART support depend on pinctrl.
I will separate this to another patch for clearer.

+
+&uart7 {
+       status = "okay";
+};
--
2.17.1




--
Thx and BRs,
Tengfei Fan



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