[PATCH v1 0/3] Add minimal Samsung Galaxy S20 Series board and SM-G981B support

[PATCH v1 0/3] Add minimal Samsung Galaxy S20 Series board and SM-G981B support

[Umer Uddin]

Hi folks,

This series adds initial support for the Samsung Galaxy S20 Series and also
initial board support for the Samsung Galaxy S20 5G (SM-G981B)
codenamed x1s.

The S20 Series feature a lot of similarities in their configuration
and internally Samsung named the common devicetrees in their
downstream kernel 'hubble', please note hubble excludes the
S20 FE series and Note20 series.
The device trees have been tested with dtbs_check W=1
and results in no warnings.

This initial bringup consists of:
 * pinctrl
 * gpio-keys
 * simple-framebuffer

This is enough to reach a shell in an initramfs. More platform support  
will be added in the future.

Just like SM-N981B, the preferred way to boot the upstream kernel is     
by using a shim bootloader, called uniLoader [1], which works around     
some issues with the stock, non-replacable Samsung S-LK bootloader.   
For example, the stock bootloader leaves the decon trigger control
unset, which causes the framebuffer not to refresh.

Device functionality depends on the patch series from Igor Belwon:
"Add minimal Exynos990 SoC and SM-N981B support"

[1] https://github.com/ivoszbg/uniLoader

Umer Uddin (3):
  dt-bindings: arm: samsung: samsung-boards: Add bindings for SM-G981B
    board
  arm64: dts: exynos: Add initial support for Samsung Galaxy S20 Series
    boards (hubble)
  arm64: dts: exynos: Add initial support for Samsung Galaxy S20 5G
    (x1s)

 .../bindings/arm/samsung/samsung-boards.yaml  |   1 +
 arch/arm64/boot/dts/exynos/Makefile           |   1 +
 .../dts/exynos/exynos990-hubble-common.dtsi   | 109 ++++++++++++++++++
 arch/arm64/boot/dts/exynos/exynos990-x1s.dts  |  23 ++++
 4 files changed, 134 insertions(+)
 create mode 100644 arch/arm64/boot/dts/exynos/exynos990-hubble-common.dtsi
 create mode 100644 arch/arm64/boot/dts/exynos/exynos990-x1s.dts

-- 
2.46.2

[PATCH v1 1/3] dt-bindings: arm: samsung: samsung-boards: Add bindings for SM-G981B board

[Umer Uddin]

Add devicetree bindings for Samsung S20 5G board.

Signed-off-by: Umer Uddin <umer.uddin@mentallysanemainliners.org>
---
 .../devicetree/bindings/arm/samsung/samsung-boards.yaml          | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml
index d25a17e69..3dba0b283 100644
--- a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml
+++ b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml
@@ -234,6 +234,7 @@ properties:
         items:
           - enum:
               - samsung,c1s                     # Samsung Galaxy Note20 5G (SM-N981B)
+              - samsung,x1s                     # Samsung Galaxy S20 5G (SM-G981B)
           - const: samsung,exynos990
 
       - description: Exynos Auto v9 based boards
-- 
2.46.2

[PATCH v1 2/3] arm64: dts: exynos: Add initial support for Samsung Galaxy S20 Series boards (hubble)

[Umer Uddin]

Add initial support for the Samsung Galaxy S20 Series (hubble) phones.
They were launched in 2020, and are based on the Exynos 990 SoC.
The devices have multiple RAM configurations,
starting from 8GB going all the way up to 16GB for the S20 Ultra devices.

This device tree adds support for the following:

- SimpleFB
- 8GB RAM (Any more will be mapped in device trees)
- Buttons

Signed-off-by: Umer Uddin <umer.uddin@mentallysanemainliners.org>
---
 .../dts/exynos/exynos990-hubble-common.dtsi   | 109 ++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 arch/arm64/boot/dts/exynos/exynos990-hubble-common.dtsi

diff --git a/arch/arm64/boot/dts/exynos/exynos990-hubble-common.dtsi b/arch/arm64/boot/dts/exynos/exynos990-hubble-common.dtsi
new file mode 100644
index 000000000..2c634e4bb
--- /dev/null
+++ b/arch/arm64/boot/dts/exynos/exynos990-hubble-common.dtsi
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Samsung Galaxy S20 Series device tree source
+ *
+ * Copyright (c) 2024, Umer Uddin <umer.uddin@mentallysanemainliners.org>
+ */
+
+/dts-v1/;
+#include "exynos990.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		framebuffer0: framebuffer@f1000000 {
+			compatible = "simple-framebuffer";
+			reg = <0 0xf1000000 0 (1440 * 3200 * 4)>;
+			width = <1440>;
+			height = <3200>;
+			stride = <(1440 * 4)>;
+			format = "a8r8g8b8";
+		};
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x0 0x3ab00000>,
+		      /* Memory hole */
+		      <0x0 0xc1200000 0x0 0x1ee00000>,
+		      /* Memory hole */
+		      <0x0 0xe1900000 0x0 0x1e700000>,
+		      /* Memory hole */
+		      <0x8 0x80000000 0x1 0x7ec00000>;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		cont_splash_mem: framebuffer@f1000000 {
+			reg = <0 0xf1000000 0 0x1194000>;
+			no-map;
+		};
+
+		abox_reserved: audio@f7fb0000 {
+			reg = <0 0xf7fb0000 0 0x2a50000>;
+			no-map;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&key_power &key_voldown &key_volup>;
+		pinctrl-names = "default";
+
+		power-key {
+			label = "Power";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpa2 4 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		voldown-key {
+			label = "Volume Down";
+			linux,code = <KEY_VOLUMEDOWN>;
+			gpios = <&gpa0 4 GPIO_ACTIVE_LOW>;
+		};
+
+		volup-key {
+			label = "Volume Up";
+			linux,code = <KEY_VOLUMEUP>;
+			gpios = <&gpa0 3 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&oscclk {
+	clock-frequency = <26000000>;
+};
+
+&pinctrl_alive {
+	key_power: key-power-pins {
+		samsung,pins = "gpa2-4";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+
+	key_voldown: key-voldown-pins {
+		samsung,pins = "gpa0-4";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+
+	key_volup: key-volup-pins {
+		samsung,pins = "gpa0-3";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+};
-- 
2.46.2

Re: [PATCH v1 2/3] arm64: dts: exynos: Add initial support for Samsung Galaxy S20 Series boards (hubble)

[Krzysztof Kozlowski]

On 16/10/2024 21:34, Umer Uddin wrote:
> Add initial support for the Samsung Galaxy S20 Series (hubble) phones.
> They were launched in 2020, and are based on the Exynos 990 SoC.
> The devices have multiple RAM configurations,
> starting from 8GB going all the way up to 16GB for the S20 Ultra devices.
> 
> This device tree adds support for the following:
> 
> - SimpleFB
> - 8GB RAM (Any more will be mapped in device trees)
> - Buttons
> 
> Signed-off-by: Umer Uddin <umer.uddin@mentallysanemainliners.org>
> ---
>  .../dts/exynos/exynos990-hubble-common.dtsi   | 109 ++++++++++++++++++

There is only one user - your x1s - so we do not need common file,
unless you post immediately more users.

Best regards,
Krzysztof

[PATCH v1 3/3] arm64: dts: exynos: Add initial support for Samsung Galaxy S20 5G (x1s)

[Umer Uddin]

Add initial support for the Samsung Galaxy S20 5G (x1s/SM-G981B)
phone. It was launched in 2020, and it's based on the Exynos 990 SoC. It
has only one configuration with 12GB of RAM and 128GB of UFS 3.0 storage.

This device tree adds support for the following:

- SimpleFB
- 12GB RAM
- Buttons

Signed-off-by: Umer Uddin <umer.uddin@mentallysanemainliners.org>
---
 arch/arm64/boot/dts/exynos/Makefile          |  1 +
 arch/arm64/boot/dts/exynos/exynos990-x1s.dts | 23 ++++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 arch/arm64/boot/dts/exynos/exynos990-x1s.dts

diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile
index 7a934499b..deb8dc509 100644
--- a/arch/arm64/boot/dts/exynos/Makefile
+++ b/arch/arm64/boot/dts/exynos/Makefile
@@ -9,5 +9,6 @@ dtb-$(CONFIG_ARCH_EXYNOS) += \
 	exynos850-e850-96.dtb		\
 	exynos8895-dreamlte.dtb		\
 	exynos990-c1s.dtb		\
+	exynos990-x1s.dtb		\
 	exynosautov9-sadk.dtb		\
 	exynosautov920-sadk.dtb
diff --git a/arch/arm64/boot/dts/exynos/exynos990-x1s.dts b/arch/arm64/boot/dts/exynos/exynos990-x1s.dts
new file mode 100644
index 000000000..f7b1afd0e
--- /dev/null
+++ b/arch/arm64/boot/dts/exynos/exynos990-x1s.dts
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Samsung Galaxy S20 5G (x1s/SM-G981B) device tree source
+ *
+ * Copyright (c) 2024, Umer Uddin <umer.uddin@mentallysanemainliners.org>
+ */
+
+/dts-v1/;
+#include "exynos990-hubble-common.dtsi"
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	model = "Samsung Galaxy S20 5G";
+	compatible = "samsung,x1s", "samsung,exynos990";
+
+	memory@9fec00000 {
+		device_type = "memory";
+		reg = <0x9 0xfec00000 0x0 0x01400000>,
+		      <0xa 0x0 0x0 0xfe800000>;
+	};
+};
-- 
2.46.2