linux-kernel - [PATCH v7 4/4] arm64: dts: sdm845: Add support for an instance of I2C controller

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Date:   Tue, 12 Jun 2018 11:09:08 -0600
From:   Karthikeyan Ramasubramanian <kramasub@...eaurora.org>
To:     andy.gross@...aro.org, david.brown@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, wsa@...-dreams.de, gregkh@...uxfoundation.org
Cc:     Karthikeyan Ramasubramanian <kramasub@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-i2c@...r.kernel.org,
        evgreen@...omium.org, acourbot@...omium.org, swboyd@...omium.org,
        dianders@...omium.org
Subject: [PATCH v7 4/4] arm64: dts: sdm845: Add support for an instance of I2C controller

Add one instance of GENI based I2C master controller to enable testing
I2C driver using EEPROM slave.

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@...eaurora.org>
Reviewed-by: Douglas Anderson <dianders@...omium.org>
---
 arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 19 +++++++++++++++++++
 arch/arm64/boot/dts/qcom/sdm845.dtsi    | 28 ++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index 17b2fb0..dbe3a36 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -29,9 +29,28 @@
 		serial@...000 {
 			status = "okay";
 		};
+
+		i2c@...000 {
+			clock-frequency = <400000>;
+			status = "okay";
+		};
 	};
 
 	pinctrl@...0000 {
+		qup-i2c10-default {
+			pinconf {
+				pins = "gpio55", "gpio56";
+				drive-strength = <2>;
+				bias-disable;
+			};
+		};
+
+		qup-i2c10-sleep {
+			pinconf {
+				pins = "gpio55", "gpio56";
+			};
+		};
+
 		qup-uart2-default {
 			pinconf_tx {
 				pins = "gpio4";
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 71801b9..d367020 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -196,6 +196,20 @@
 			interrupt-controller;
 			#interrupt-cells = <2>;
 
+			qup_i2c10_default: qup-i2c10-default {
+				pinmux {
+					function = "qup10";
+					pins = "gpio55", "gpio56";
+				};
+			};
+
+			qup_i2c10_sleep: qup-i2c10-sleep {
+				pinmux {
+					function = "gpio";
+					pins = "gpio55", "gpio56";
+				};
+			};
+
 			qup_uart2_default: qup-uart2-default {
 				pinmux {
 					function = "qup9";
@@ -310,6 +324,20 @@
 				interrupts = <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
+
+			i2c10: i2c@...000 {
+				compatible = "qcom,geni-i2c";
+				reg = <0xa88000 0x4000>;
+				clock-names = "se";
+				clocks = <&gcc GCC_QUPV3_WRAP1_S2_CLK>;
+				pinctrl-names = "default", "sleep";
+				pinctrl-0 = <&qup_i2c10_default>;
+				pinctrl-1 = <&qup_i2c10_sleep>;
+				interrupts = <GIC_SPI 355 IRQ_TYPE_LEVEL_HIGH>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				status = "disabled";
+			};
 		};
 	};
 };
-- 
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