linux-kernel - [PATCH v5 4/4] arm64: dts: sdm845: Add serial console support

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Message-Id: <20180222061208.2031-5-rnayak@codeaurora.org>
Date:   Thu, 22 Feb 2018 11:42:08 +0530
From:   Rajendra Nayak <rnayak@...eaurora.org>
To:     andy.gross@...aro.org
Cc:     devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        sboyd@...eaurora.org, evgreen@...omium.org,
        bjorn.andersson@...aro.org, dianders@...omium.org,
        marc.zyngier@....com, Rajendra Nayak <rnayak@...eaurora.org>
Subject: [PATCH v5 4/4] arm64: dts: sdm845: Add serial console support

Add the qup uart node and geni se instance needed to
support the serial console on the MTP.

Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
---
 arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 39 +++++++++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/sdm845.dtsi    | 39 +++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index 979ab49913f1..2a1ed55b703e 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -12,4 +12,43 @@
 / {
 	model = "Qualcomm Technologies, Inc. SDM845 MTP";
 	compatible = "qcom,sdm845-mtp";
+
+	aliases {
+		serial0 = &qup_uart2;
+	};
+
+	chosen {
+		stdout-path = "serial0";
+	};
+};
+
+&soc {
+	geni-se@...000 {
+		serial@...000 {
+			status = "okay";
+		};
+	};
+
+	pinctrl@...0000 {
+		qup-uart2-default {
+			pinconf_tx {
+				pins = "gpio4";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
+			pinconf_rx {
+				pins = "gpio5";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+		};
+
+		qup-uart2-sleep {
+			pinconf {
+				pins = "gpio4", "gpio5";
+				bias-pull-down;
+			};
+		};
+	};
 };
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index da3d6ac906c8..0acd6c51115d 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -6,6 +6,7 @@
  */
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/qcom,gcc-sdm845.h>
 
 / {
 	interrupt-parent = <&intc>;
@@ -195,6 +196,20 @@
 			#gpio-cells = <2>;
 			interrupt-controller;
 			#interrupt-cells = <2>;
+
+			qup_uart2_default: qup-uart2-default {
+				pinmux {
+					function = "qup9";
+					pins = "gpio4", "gpio5";
+				};
+			};
+
+			qup_uart2_sleep: qup-uart2-sleep {
+				pinmux {
+					function = "gpio";
+					pins = "gpio4", "gpio5";
+				};
+			};
 		};
 
 		timer@...90000 {
@@ -273,5 +288,29 @@
 			#interrupt-cells = <4>;
 			cell-index = <0>;
 		};
+
+		geni-se@...000 {
+			compatible = "qcom,geni-se-qup";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			reg = <0xac0000 0x6000>;
+			clocks = <&gcc GCC_QUPV3_WRAP_1_M_AHB_CLK>,
+				 <&gcc GCC_QUPV3_WRAP_1_S_AHB_CLK>;
+			clock-names = "m-ahb", "s-ahb";
+
+			qup_uart2: serial@...000 {
+				compatible = "qcom,geni-debug-uart";
+				reg = <0xa84000 0x4000>;
+				reg-names = "se-phys";
+				clock-names = "se-clk";
+				clocks = <&gcc GCC_QUPV3_WRAP1_S1_CLK>;
+				pinctrl-names = "default", "sleep";
+				pinctrl-0 = <&qup_uart2_default>;
+				pinctrl-1 = <&qup_uart2_sleep>;
+				interrupts = <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>;
+				status = "disabled";
+			};
+		};
 	};
 };
-- 
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