linux-kernel - [PATCH v4 3/4] ARM: dts: qcom: Add support for Samsung Galaxy Tab 4 10.1 LTE (SM-T535)

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Date:   Thu, 26 Oct 2023 15:24:08 +0200
From:   Stefan Hansson <newbyte@...tmarketos.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Stefan Hansson <newbyte@...tmarketos.org>
Subject: [PATCH v4 3/4] ARM: dts: qcom: Add support for Samsung Galaxy Tab 4 10.1 LTE (SM-T535)

Add a device tree for the Samsung Galaxy Tab 4 10.1 (SM-T535) LTE tablet
based on the MSM8926 platform.

The common dtsi is also modified to describe the widest constraints,
which required modifications to the matisse-wifi dts.

Signed-off-by: Stefan Hansson <newbyte@...tmarketos.org>
---
 arch/arm/boot/dts/qcom/Makefile               |  1 +
 .../qcom-apq8026-samsung-matisse-wifi.dts     |  8 ++++
 .../qcom-msm8226-samsung-matisse-common.dtsi  |  4 +-
 .../qcom/qcom-msm8926-samsung-matisselte.dts  | 42 +++++++++++++++++++
 4 files changed, 53 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm/boot/dts/qcom/qcom-msm8926-samsung-matisselte.dts

diff --git a/arch/arm/boot/dts/qcom/Makefile b/arch/arm/boot/dts/qcom/Makefile
index a3d293e40820..cab35eeb30f6 100644
--- a/arch/arm/boot/dts/qcom/Makefile
+++ b/arch/arm/boot/dts/qcom/Makefile
@@ -34,6 +34,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
 	qcom-msm8916-samsung-serranove.dtb \
 	qcom-msm8926-microsoft-superman-lte.dtb \
 	qcom-msm8926-microsoft-tesla.dtb \
+	qcom-msm8926-samsung-matisselte.dtb \
 	qcom-msm8960-cdp.dtb \
 	qcom-msm8960-samsung-expressatt.dtb \
 	qcom-msm8974-lge-nexus5-hammerhead.dtb \
diff --git a/arch/arm/boot/dts/qcom/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom/qcom-apq8026-samsung-matisse-wifi.dts
index b0da51f67539..3be02bdbb919 100644
--- a/arch/arm/boot/dts/qcom/qcom-apq8026-samsung-matisse-wifi.dts
+++ b/arch/arm/boot/dts/qcom/qcom-apq8026-samsung-matisse-wifi.dts
@@ -66,6 +66,14 @@ touchscreen@4a {
 	};
 };
 
+&pm8226_l3 {
+	regulator-max-microvolt = <1337500>;
+};
+
+&pm8226_s4 {
+	regulator-max-microvolt = <1800000>;
+};
+
 &tlmm {
 	tsp_en1_default_state: tsp-en1-default-state {
 		pins = "gpio73";
diff --git a/arch/arm/boot/dts/qcom/qcom-msm8226-samsung-matisse-common.dtsi b/arch/arm/boot/dts/qcom/qcom-msm8226-samsung-matisse-common.dtsi
index ef98d88927ca..28317ce79e97 100644
--- a/arch/arm/boot/dts/qcom/qcom-msm8226-samsung-matisse-common.dtsi
+++ b/arch/arm/boot/dts/qcom/qcom-msm8226-samsung-matisse-common.dtsi
@@ -230,7 +230,7 @@ pm8226_s3: s3 {
 
 		pm8226_s4: s4 {
 			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <1800000>;
+			regulator-max-microvolt = <2200000>;
 		};
 
 		pm8226_s5: s5 {
@@ -250,7 +250,7 @@ pm8226_l2: l2 {
 
 		pm8226_l3: l3 {
 			regulator-min-microvolt = <750000>;
-			regulator-max-microvolt = <1337500>;
+			regulator-max-microvolt = <1350000>;
 			regulator-always-on;
 		};
 
diff --git a/arch/arm/boot/dts/qcom/qcom-msm8926-samsung-matisselte.dts b/arch/arm/boot/dts/qcom/qcom-msm8926-samsung-matisselte.dts
new file mode 100644
index 000000000000..3e312f95c1fe
--- /dev/null
+++ b/arch/arm/boot/dts/qcom/qcom-msm8926-samsung-matisselte.dts
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2022, Matti Lehtimäki <matti.lehtimaki@...il.com>
+ * Copyright (c) 2023, Stefan Hansson <newbyte@...tmarketos.org>
+ */
+
+/dts-v1/;
+
+#include "qcom-msm8226-samsung-matisse-common.dtsi"
+
+/ {
+	model = "Samsung Galaxy Tab 4 10.1 LTE";
+	compatible = "samsung,matisselte", "qcom,msm8926", "qcom,msm8226";
+	chassis-type = "tablet";
+
+	reg_tsp_3p3v: regulator-tsp-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "tsp_3p3v";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 32 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tsp_en1_default_state>;
+	};
+};
+
+&sdhc_2 {
+	/* SD card fails to probe with error -110 */
+	status = "disabled";
+};
+
+&tlmm {
+	tsp_en1_default_state: tsp-en1-default-state {
+		pins = "gpio32";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+};
-- 
2.41.0