[PATCH v2 2/2] arm64: exynos: Add initial support for Samsung Galaxy Tab A 10.1 (2019, 4G)

[Umer Uddin via B4 Relay]

From: Umer Uddin <umer.uddin@xxxxxxxxxxxxxxxxxxxxxxxxxx>

Add initial support for Samsung Galaxy Tab A 10.1 (2019) is a tablet that
is based on Exynos7885, this patch adds support for the LTE variant.

This device tree adds support for the following:

- SimpleFB
- 2GB RAM
- Buttons
- Internal eMMC

Signed-off-by: Umer Uddin <umer.uddin@xxxxxxxxxxxxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/exynos/Makefile                |   1 +
 .../arm64/boot/dts/exynos/exynos7885-gta3xllte.dts | 129 +++++++++++++++++++++
 2 files changed, 130 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile
index 7534b773d28f..f1946a95cb42 100644
--- a/arch/arm64/boot/dts/exynos/Makefile
+++ b/arch/arm64/boot/dts/exynos/Makefile
@@ -12,6 +12,7 @@ dtb-$(CONFIG_ARCH_EXYNOS) += \
 	exynos7870-j6lte.dtb		\
 	exynos7870-j7xelte.dtb		\
 	exynos7870-on7xelte.dtb		\
+	exynos7885-gta3xllte.dtb	\
 	exynos7885-jackpotlte.dtb	\
 	exynos850-a217f.dtb		\
 	exynos850-e850-96.dtb		\
diff --git a/arch/arm64/boot/dts/exynos/exynos7885-gta3xllte.dts b/arch/arm64/boot/dts/exynos/exynos7885-gta3xllte.dts
new file mode 100644
index 000000000000..03476f8b1200
--- /dev/null
+++ b/arch/arm64/boot/dts/exynos/exynos7885-gta3xllte.dts
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Samsung Galaxy Tab A 10.1 (2019, 4G) (gta3xllte/SM-T515) device tree source
+ *
+ * Copyright (c) 2026, Umer Uddin <umer.uddin@xxxxxxxxxxxxxxxxxxxxxxxxxx>
+ */
+
+/dts-v1/;
+#include "exynos7885.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Samsung Galaxy Tab A 10.1 (2019, 4G)";
+	compatible = "samsung,gta3xllte", "samsung,exynos7885";
+	chassis-type = "tablet";
+
+	aliases {
+		mmc0 = &mmc_0;
+		serial0 = &serial_0;
+		serial1 = &serial_1;
+		serial2 = &serial_2;
+	};
+
+	chosen {
+		ranges;
+		#address-cells = <2>;
+		#size-cells = <1>;
+
+		framebuffer0: framebuffer@ec000000 {
+			compatible = "simple-framebuffer";
+			reg = <0 0xec000000 0x01400000>;
+			width = <1200>;
+			height = <1920>;
+			stride = <(1200 * 4)>;
+			format = "a8r8g8b8";
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-0 = <&key_volup &key_voldown &key_power>;
+		pinctrl-names = "default";
+
+		power-key {
+			gpios = <&gpa1 7 GPIO_ACTIVE_LOW>;
+			label = "Power";
+			wakeup-source;
+			linux,code = <KEY_POWER>;
+		};
+
+		voldown-key {
+			gpios = <&gpa1 6 GPIO_ACTIVE_LOW>;
+			label = "Volume Down";
+			linux,code = <KEY_VOLUMEDOWN>;
+		};
+
+		volup-key {
+			gpios = <&gpa1 5 GPIO_ACTIVE_LOW>;
+			label = "Volume Up";
+			linux,code = <KEY_VOLUMEUP>;
+		};
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x3dd00000>,
+		      <0x0 0xc0000000 0x40000000>;
+	};
+
+	reserved-memory {
+		ranges;
+		#address-cells = <2>;
+		#size-cells = <1>;
+
+		cont_splash_mem: framebuffer@ec000000 {
+			reg = <0 0xec000000 0x01400000>;
+			no-map;
+		};
+	};
+};
+
+&mmc_0 {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	card-detect-delay = <200>;
+	clock-frequency = <800000000>;
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+	non-removable;
+	pinctrl-0 = <&sd0_clk_fast_slew_rate_3x &sd0_cmd &sd0_rdqs
+		     &sd0_bus1 &sd0_bus4 &sd0_bus8>;
+	pinctrl-names = "default";
+
+	samsung,dw-mshc-ciu-div = <3>;
+	samsung,dw-mshc-ddr-timing = <2 4>;
+	samsung,dw-mshc-hs400-timing = <0 2>;
+	samsung,dw-mshc-sdr-timing = <0 4>;
+
+	status = "okay";
+};
+
+&oscclk {
+	clock-frequency = <26000000>;
+};
+
+&pinctrl_alive {
+	key_power: key-power-pins {
+		samsung,pins = "gpa1-7";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+
+	key_voldown: key-voldown-pins {
+		samsung,pins = "gpa1-6";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+
+	key_volup: key-volup-pins {
+		samsung,pins = "gpa1-5";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+};

-- 
2.56.0