linux-kernel - [PATCH v1 3/3] arm64: dts: qcom: sdm845: Add SD nodes for sdm845-mtp

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Date:   Wed, 28 Nov 2018 14:34:28 -0800
From:   Evan Green <evgreen@...omium.org>
To:     Andy Gross <andy.gross@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Douglas Anderson <dianders@...omium.org>,
        Evan Green <evgreen@...omium.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        David Brown <david.brown@...aro.org>,
        Mark Rutland <mark.rutland@....com>, linux-soc@...r.kernel.org
Subject: [PATCH v1 3/3] arm64: dts: qcom: sdm845: Add SD nodes for sdm845-mtp

Enable support for the micro SD slot on the MTP.

Signed-off-by: Evan Green <evgreen@...omium.org>
---

 arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 53 +++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index d667eee4e6d03..b85e9fed14845 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -7,6 +7,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include "sdm845.dtsi"
 
@@ -348,6 +349,18 @@
 	clock-frequency = <400000>;
 };
 
+&sdhc_2 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdc2_clk &sdc2_cmd &sdc2_data &sd_cd_odl>;
+
+	vmmc-supply = <&vreg_l21a_2p95>;
+	vqmmc-supply = <&vddpx_2>;
+
+	cd-gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
+};
+
 &qupv3_id_1 {
 	status = "okay";
 };
@@ -444,3 +457,43 @@
 		bias-pull-up;
 	};
 };
+
+&tlmm {
+	/* It seems that mmc_test reports errors if drive strength is not 16. */
+	sdc2_clk: sdc2-clk {
+		pinconf {
+			pins = "sdc2_clk";
+			bias-disable;
+			drive-strength = <16>;
+		};
+	};
+
+	sdc2_cmd: sdc2-cmd {
+		pinconf {
+			pins = "sdc2_cmd";
+			bias-pull-up;
+			drive-strength = <16>;
+		};
+	};
+
+	sdc2_data: sdc2-data {
+		pinconf {
+			pins = "sdc2_data";
+			bias-pull-up;
+			drive-strength = <16>;
+		};
+	};
+
+	sd_cd_odl: sd-cd-odl {
+		pinmux {
+			pins = "gpio126";
+			function = "gpio";
+		};
+
+		pinconf {
+			pins = "gpio126";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+	};
+};
-- 
2.18.1