[PATCH v2 0/5] arm64: dts: apple: Add DWI backlight dt nodes

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* [PATCH v2 0/5] arm64: dts: apple: Add DWI backlight dt nodes
@ 2025-02-28  4:25 Nick Chan
  2025-02-28  4:25 ` [PATCH v2 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes Nick Chan
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Nick Chan @ 2025-02-28  4:25 UTC (permalink / raw)
  To: Janne Grunau, Sven Peter, Alyssa Rosenzweig, Rob Herring,
	Krzysztof Kozlowski, Conor Dooley
  Cc: asahi, linux-arm-kernel, devicetree, linux-kernel, Nick Chan

Add device tree nodes for DWI backlight found on some Apple iPhones, iPads
and iPod touches. Not all devices have this feature, as some devices
instead have their backlights directly connected to the WLED output of a
PMU or use self-emissive panels.

Devicetree bindings are in the driver series. Last version at:
https://lore.kernel.org/asahi/20250214040306.16312-1-towinchenmi@gmail.com/

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
---
Changes in v2:
- Fix typo s/iPad touch 7/iPod touch 7/ in commit message.
- Pad "reg" property with a leading zero when needed
- Link to v1: https://lore.kernel.org/r/20250220-dwi-dt-v1-0-d742431c7373@gmail.com

---
Nick Chan (5):
      arm64: dts: apple: s5l8960x: Add backlight nodes
      arm64: dts: apple: t7000: Add backlight nodes
      arm64: dts: apple: s800-0-3: Add backlight nodes
      arm64: dts: apple: t8010: Add backlight nodes
      arm64: dts: apple: t8015: Add backlight nodes

 arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi     | 4 ++++
 arch/arm64/boot/dts/apple/s5l8960x.dtsi        | 7 +++++++
 arch/arm64/boot/dts/apple/s800-0-3-common.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/s800-0-3.dtsi        | 7 +++++++
 arch/arm64/boot/dts/apple/t7000-handheld.dtsi  | 4 ++++
 arch/arm64/boot/dts/apple/t7000.dtsi           | 7 +++++++
 arch/arm64/boot/dts/apple/t8010-common.dtsi    | 4 ++++
 arch/arm64/boot/dts/apple/t8010.dtsi           | 7 +++++++
 arch/arm64/boot/dts/apple/t8015-8.dtsi         | 4 ++++
 arch/arm64/boot/dts/apple/t8015.dtsi           | 7 +++++++
 10 files changed, 55 insertions(+)
---
base-commit: 5744902a35798e516def50348356f867a6c1f1c7
change-id: 20250220-dwi-dt-c9c7af33bd16

Best regards,
-- 
Nick Chan <towinchenmi@gmail.com>


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v2 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes
  2025-02-28  4:25 [PATCH v2 0/5] arm64: dts: apple: Add DWI backlight dt nodes Nick Chan
@ 2025-02-28  4:25 ` Nick Chan
  2025-02-28  4:25 ` [PATCH v2 2/5] arm64: dts: apple: t7000: " Nick Chan
  2025-02-28  4:25 ` [PATCH v2 3/5] arm64: dts: apple: s800-0-3: " Nick Chan
  2 siblings, 0 replies; 4+ messages in thread
From: Nick Chan @ 2025-02-28  4:25 UTC (permalink / raw)
  To: Janne Grunau, Sven Peter, Alyssa Rosenzweig, Rob Herring,
	Krzysztof Kozlowski, Conor Dooley
  Cc: asahi, linux-arm-kernel, devicetree, linux-kernel, Nick Chan

Add DWI backlight controller nodes for Apple A7 SoC, and enable it for
iPhone 5s.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
---
 arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/s5l8960x.dtsi    | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi b/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi
index bfbd2629e206736822a157431ec959e1aa70f41b..8868df1538d68595cfe92c80b1fcecee42d348df 100644
--- a/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi
+++ b/arch/arm64/boot/dts/apple/s5l8960x-5s.dtsi
@@ -51,6 +51,10 @@ switch-mute {
 	};
 };
 
+&dwi_bl {
+	status = "okay";
+};
+
 &framebuffer0 {
 	power-domains = <&ps_disp0 &ps_mipi_dsi>;
 };
diff --git a/arch/arm64/boot/dts/apple/s5l8960x.dtsi b/arch/arm64/boot/dts/apple/s5l8960x.dtsi
index 64dbae5c73515bb6a1651b9b26d349d0cfd0408a..d820b0e430507f681a5f2aa13a498be98080e1db 100644
--- a/arch/arm64/boot/dts/apple/s5l8960x.dtsi
+++ b/arch/arm64/boot/dts/apple/s5l8960x.dtsi
@@ -100,6 +100,13 @@ aic: interrupt-controller@20e100000 {
 			power-domains = <&ps_aic>;
 		};
 
+		dwi_bl: backlight@20e200010 {
+			compatible = "apple,s5l8960x-dwi-bl", "apple,dwi-bl";
+			reg = <0x2 0x0e200010 0x0 0x8>;
+			power-domains = <&ps_dwi>;
+			status = "disabled";
+		};
+
 		pinctrl: pinctrl@20e300000 {
 			compatible = "apple,s5l8960x-pinctrl", "apple,pinctrl";
 			reg = <0x2 0x0e300000 0x0 0x100000>;

-- 
2.48.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* [PATCH v2 2/5] arm64: dts: apple: t7000: Add backlight nodes
  2025-02-28  4:25 [PATCH v2 0/5] arm64: dts: apple: Add DWI backlight dt nodes Nick Chan
  2025-02-28  4:25 ` [PATCH v2 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes Nick Chan
@ 2025-02-28  4:25 ` Nick Chan
  2025-02-28  4:25 ` [PATCH v2 3/5] arm64: dts: apple: s800-0-3: " Nick Chan
  2 siblings, 0 replies; 4+ messages in thread
From: Nick Chan @ 2025-02-28  4:25 UTC (permalink / raw)
  To: Janne Grunau, Sven Peter, Alyssa Rosenzweig, Rob Herring,
	Krzysztof Kozlowski, Conor Dooley
  Cc: asahi, linux-arm-kernel, devicetree, linux-kernel, Nick Chan

Add DWI backlight controller nodes for Apple A8 SoC, and enable it for:

- iPhone 6
- iPhone 6 Plus
- iPad mini 4
- iPod touch 6

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
---
 arch/arm64/boot/dts/apple/t7000-handheld.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/t7000.dtsi          | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/t7000-handheld.dtsi b/arch/arm64/boot/dts/apple/t7000-handheld.dtsi
index 8984c9ec6cc8e3c86281a3da719edb56c5bb7f5a..7b58aa648b53dadafb3a01d9ae1e01afa6cd5869 100644
--- a/arch/arm64/boot/dts/apple/t7000-handheld.dtsi
+++ b/arch/arm64/boot/dts/apple/t7000-handheld.dtsi
@@ -22,6 +22,10 @@ framebuffer0: framebuffer@0 {
 	};
 };
 
+&dwi_bl {
+	status = "okay";
+};
+
 &serial0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/apple/t7000.dtsi b/arch/arm64/boot/dts/apple/t7000.dtsi
index 32cac8c30e62d657079dbf32aece8af0fd9cef38..85a34dc7bc01088167d33d7b7e1cdb78161c46d8 100644
--- a/arch/arm64/boot/dts/apple/t7000.dtsi
+++ b/arch/arm64/boot/dts/apple/t7000.dtsi
@@ -155,6 +155,13 @@ aic: interrupt-controller@20e100000 {
 			power-domains = <&ps_aic>;
 		};
 
+		dwi_bl: backlight@20e200010 {
+			compatible = "apple,t7000-dwi-bl", "apple,dwi-bl";
+			reg = <0x2 0x0e200010 0x0 0x8>;
+			power-domains = <&ps_dwi>;
+			status = "disabled";
+		};
+
 		pinctrl: pinctrl@20e300000 {
 			compatible = "apple,t7000-pinctrl", "apple,pinctrl";
 			reg = <0x2 0x0e300000 0x0 0x100000>;

-- 
2.48.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* [PATCH v2 3/5] arm64: dts: apple: s800-0-3: Add backlight nodes
  2025-02-28  4:25 [PATCH v2 0/5] arm64: dts: apple: Add DWI backlight dt nodes Nick Chan
  2025-02-28  4:25 ` [PATCH v2 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes Nick Chan
  2025-02-28  4:25 ` [PATCH v2 2/5] arm64: dts: apple: t7000: " Nick Chan
@ 2025-02-28  4:25 ` Nick Chan
  2 siblings, 0 replies; 4+ messages in thread
From: Nick Chan @ 2025-02-28  4:25 UTC (permalink / raw)
  To: Janne Grunau, Sven Peter, Alyssa Rosenzweig, Rob Herring,
	Krzysztof Kozlowski, Conor Dooley
  Cc: asahi, linux-arm-kernel, devicetree, linux-kernel, Nick Chan

Add DWI backlight controller nodes for Apple A9 SoC, and enable it for:

- iPhone 6
- iPhone 6s
- iPhone SE
- iPad 5

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
---
 arch/arm64/boot/dts/apple/s800-0-3-common.dtsi | 4 ++++
 arch/arm64/boot/dts/apple/s800-0-3.dtsi        | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/s800-0-3-common.dtsi b/arch/arm64/boot/dts/apple/s800-0-3-common.dtsi
index 4276bd890e81b16f19b04e1716a55f32f9a371d9..cb42c5f2c1b6caed4ae04ca0b6173e23bbda47f0 100644
--- a/arch/arm64/boot/dts/apple/s800-0-3-common.dtsi
+++ b/arch/arm64/boot/dts/apple/s800-0-3-common.dtsi
@@ -43,6 +43,10 @@ reserved-memory {
 	};
 };
 
+&dwi_bl {
+	status = "okay";
+};
+
 &serial0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/apple/s800-0-3.dtsi b/arch/arm64/boot/dts/apple/s800-0-3.dtsi
index 2aec49f0da6467519aeb2561d00b14f46fe216fb..c0e9ae45627c8150bc0ddcdc1e6ab65d52fa7219 100644
--- a/arch/arm64/boot/dts/apple/s800-0-3.dtsi
+++ b/arch/arm64/boot/dts/apple/s800-0-3.dtsi
@@ -91,6 +91,13 @@ aic: interrupt-controller@20e100000 {
 			power-domains = <&ps_aic>;
 		};
 
+		dwi_bl: backlight@20e200080 {
+			compatible = "apple,s8000-dwi-bl", "apple,dwi-bl";
+			reg = <0x2 0x0e200080 0x0 0x8>;
+			power-domains = <&ps_dwi>;
+			status = "disabled";
+		};
+
 		pinctrl_ap: pinctrl@20f100000 {
 			compatible = "apple,s8000-pinctrl", "apple,pinctrl";
 			reg = <0x2 0x0f100000 0x0 0x100000>;

-- 
2.48.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2025-02-28  4:26 UTC | newest]

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2025-02-28  4:25 [PATCH v2 0/5] arm64: dts: apple: Add DWI backlight dt nodes Nick Chan
2025-02-28  4:25 ` [PATCH v2 1/5] arm64: dts: apple: s5l8960x: Add backlight nodes Nick Chan
2025-02-28  4:25 ` [PATCH v2 2/5] arm64: dts: apple: t7000: " Nick Chan
2025-02-28  4:25 ` [PATCH v2 3/5] arm64: dts: apple: s800-0-3: " Nick Chan

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