linux-hardening - [PATCH 3/5] arm64: dts: qcom: sm6375: Hook up I2C7 GPIOs

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Date:   Fri, 18 Aug 2023 17:23:26 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Tony Luck <tony.luck@...el.com>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-hardening@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 3/5] arm64: dts: qcom: sm6375: Hook up I2C7 GPIOs

It's required to mux the GPIOs to a correct function to make sure
the I2C host can communicate with the devices on the other end.

Ensure that happens.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm6375.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6375.dtsi b/arch/arm64/boot/dts/qcom/sm6375.dtsi
index 4364b144eb93..b79908d969c7 100644
--- a/arch/arm64/boot/dts/qcom/sm6375.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6375.dtsi
@@ -875,6 +875,13 @@ qup_i2c2_default: qup-i2c2-default-state {
 				bias-pull-up;
 			};
 
+			qup_i2c7_default: qup-i2c7-default-state {
+				pins = "gpio27", "gpio28";
+				function = "qup11_f1";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+
 			qup_i2c8_default: qup-i2c8-default-state {
 				pins = "gpio19", "gpio20";
 				/* TLMM, GCC and vendor DT all have different indices.. */
@@ -1220,6 +1227,8 @@ i2c7: i2c@...4000 {
 				clock-names = "se";
 				clocks = <&gcc GCC_QUPV3_WRAP1_S1_CLK>;
 				interrupts = <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-0 = <&qup_i2c7_default>;
+				pinctrl-names = "default";
 				dmas = <&gpi_dma1 0 1 QCOM_GPI_I2C>,
 				       <&gpi_dma1 1 1 QCOM_GPI_I2C>;
 				dma-names = "tx", "rx";

-- 
2.41.0