linux-kernel - [PATCH v3 4/9] arm64: dts: qcom: sm6375: Add pin configs for some QUP configurations

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Date:   Tue, 15 Nov 2022 16:27:22 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     patches@...aro.org, Konrad Dybcio <konrad.dybcio@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 4/9] arm64: dts: qcom: sm6375: Add pin configs for some QUP configurations

Add the pin setup for SPI/I2C configurations that are supported
downstream. I can guesstimate the correct settings for other buses,
but:

- I have no hardware to test it on
- Some QUPs are straight up missing pin funcs in TLMM
- Vendors probably didn't really care and used whatever was there in
the reference design and BSP - should any other be used, they can be
configured at a later time

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm6375.dtsi | 43 ++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6375.dtsi b/arch/arm64/boot/dts/qcom/sm6375.dtsi
index 62a64dd731a0..952156891476 100644
--- a/arch/arm64/boot/dts/qcom/sm6375.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6375.dtsi
@@ -519,6 +519,49 @@ tlmm: pinctrl@...000 {
 			gpio-controller;
 			#interrupt-cells = <2>;
 			#gpio-cells = <2>;
+
+			qup_i2c0_default: qup-i2c0-default-state {
+				pins = "gpio0", "gpio1";
+				function = "qup00";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+
+			qup_i2c1_default: qup-i2c1-default-state {
+				pins = "gpio61", "gpio62";
+				function = "qup01";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+
+			qup_i2c2_default: qup-i2c2-default-state {
+				pins = "gpio45", "gpio46";
+				function = "qup02";
+				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.. */
+				function = "qup12";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+
+			qup_i2c10_default: qup-i2c10-default-state {
+				pins = "gpio4", "gpio5";
+				function = "qup10";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+
+			qup_spi0_default: qup-spi0-default-state {
+				pins = "gpio0", "gpio1", "gpio2", "gpio3";
+				function = "qup00";
+				drive-strength = <6>;
+				bias-disable;
+			};
 		};
 
 		gcc: clock-controller@...0000 {
-- 
2.38.1