linux-kernel - [PATCH v3 3/4] arm64: dts: qcom: qdu1000: Add SDHCI pin configuration to DTSI

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Date:   Tue, 23 May 2023 19:27:32 +0530
From:   Komal Bajaj <quic_kbajaj@...cinc.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc:     Komal Bajaj <quic_kbajaj@...cinc.com>, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: [PATCH v3 3/4] arm64: dts: qcom: qdu1000: Add SDHCI pin configuration to DTSI

Add required pins for SDHCI, so that the interface can work reliably.

Signed-off-by: Komal Bajaj <quic_kbajaj@...cinc.com>
---
 arch/arm64/boot/dts/qcom/qdu1000.dtsi | 50 +++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qdu1000.dtsi b/arch/arm64/boot/dts/qcom/qdu1000.dtsi
index 6df07334f1d3..9f615f3368c2 100644
--- a/arch/arm64/boot/dts/qcom/qdu1000.dtsi
+++ b/arch/arm64/boot/dts/qcom/qdu1000.dtsi
@@ -1147,6 +1147,56 @@
 				pins = "gpio31";
 				function = "gpio";
 			};
+
+			sdc_on_state: sdc-on-state {
+				clk-pins {
+					pins = "sdc1_clk";
+					drive-strength = <16>;
+					bias-disable;
+				};
+
+				cmd-pins {
+					pins = "sdc1_cmd";
+					drive-strength = <10>;
+					bias-pull-up;
+				};
+
+				data-pins {
+					pins = "sdc1_data";
+					drive-strength = <10>;
+					bias-pull-up;
+				};
+
+				rclk-pins {
+					pins = "sdc1_rclk";
+					bias-pull-down;
+				};
+			};
+
+			sdc_off_state: sdc-off-state {
+				clk-pins {
+					pins = "sdc1_clk";
+					drive-strength = <2>;
+					bias-disable;
+				};
+
+				cmd-pins {
+					pins = "sdc1_cmd";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+
+				data-pins {
+					pins = "sdc1_data";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+
+				rclk-pins {
+					pins = "sdc1_rclk";
+					bias-pull-down;
+				};
+			};
 		};

 		apps_smmu: iommu@...00000 {
--
2.17.1