Re: [PATCH v3 4/5] arm64: dts: qcom: add uart console support for SM4450

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On 9/20/23 08:54, Tengfei Fan wrote:
Add base description of UART and TLMM nodes which helps SM4450
boot to shell with console on boards with this SoC.

Signed-off-by: Tengfei Fan <quic_tengfan@xxxxxxxxxxx>
---
The SoC change must be separate from the board change.

[...]

Please leave a comment explaining what these GPIOs are
used for.
+&tlmm {
+	gpio-reserved-ranges = <0 4>, <136 1>;
+};

[...]

+		qupv3_id_0: geniqup@ac0000 {
+			compatible = "qcom,geni-se-qup";
+			reg = <0x0 0x00ac0000 0x0 0x2000>;
+			ranges;
+			clock-names = "m-ahb", "s-ahb";
+			clocks = <&gcc GCC_QUPV3_WRAP_0_M_AHB_CLK>,
+				 <&gcc GCC_QUPV3_WRAP_0_S_AHB_CLK>;
property
property-names

[...]

+
+			uart7: serial@a88000 {
+				compatible = "qcom,geni-debug-uart";
+				reg = <0 0x00a88000 0 0x4000>;
Use 0x0 consistently.

+				clock-names = "se";
+				clocks = <&gcc GCC_QUPV3_WRAP1_S2_CLK>;
property
property-names

+				interrupts = <GIC_SPI 355 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&qup_uart7_tx>, <&qup_uart7_rx>;
ditto

[...]

+			compatible = "qcom,sm4450-tlmm";
+			reg = <0 0x0f100000 0 0x300000>;
Use 0x0 consistently

+			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			gpio-ranges = <&tlmm 0 0 137>;
+			wakeup-parent = <&pdc>;
+
+			qup_uart7_rx: qup-uart7-rx-state {
+				pins = "gpio23";
+				function = "qup1_se2_l2";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
+			qup_uart7_tx: qup-uart7-tx-state {
+				pins = "gpio22";
+				function = "qup1_se2_l2";
+				drive-strength = <2>;
+				bias-disable;
+			};
+		};
+
  		intc: interrupt-controller@17200000 {
  			compatible = "arm,gic-v3";
  			reg = <0x0 0x17200000 0x0 0x10000>,     /* GICD */
@@ -476,7 +525,6 @@
  				clocks = <&xo_board>;
  			};
  		};
-
Totally unrelated change, fix the patch introducing it instead.

Konrad



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