This reverts commit 531fdbeedeb89bd32018a35c6e137765c9cc9e97.

Hardware that uses I2C wasn't designed with high speeds in mind, so
communication with PMIC via RSB can intermittently fail. Go back to I2C
as higher speed and efficiency isn't worth the trouble.

Fixes: 531fdbeedeb8 ("arm64: dts: allwinner: h6: Use RSB for AXP805 PMIC connection")
Link: https://github.com/LibreELEC/LibreELEC.tv/issues/7731
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 .../dts/allwinner/sun50i-h6-beelink-gs1.dts   | 38 +++++++++----------
 .../dts/allwinner/sun50i-h6-orangepi-3.dts    | 14 +++----
 .../dts/allwinner/sun50i-h6-orangepi.dtsi     | 22 +++++------
 3 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
index 13a0e63afeaf..2c64d834a2c4 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dts
@@ -152,28 +152,12 @@ &pio {
 	vcc-pg-supply = <&reg_aldo1>;
 };
 
-&r_ir {
-	linux,rc-map-name = "rc-beelink-gs1";
+&r_i2c {
 	status = "okay";
-};
 
-&r_pio {
-	/*
-	 * FIXME: We can't add that supply for now since it would
-	 * create a circular dependency between pinctrl, the regulator
-	 * and the RSB Bus.
-	 *
-	 * vcc-pl-supply = <&reg_aldo1>;
-	 */
-	vcc-pm-supply = <&reg_aldo1>;
-};
-
-&r_rsb {
-	status = "okay";
-
-	axp805: pmic@745 {
+	axp805: pmic@36 {
 		compatible = "x-powers,axp805", "x-powers,axp806";
-		reg = <0x745>;
+		reg = <0x36>;
 		interrupt-parent = <&r_intc>;
 		interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>;
 		interrupt-controller;
@@ -291,6 +275,22 @@ sw {
 	};
 };
 
+&r_ir {
+	linux,rc-map-name = "rc-beelink-gs1";
+	status = "okay";
+};
+
+&r_pio {
+	/*
+	 * PL0 and PL1 are used for PMIC I2C
+	 * don't enable the pl-supply else
+	 * it will fail at boot
+	 *
+	 * vcc-pl-supply = <&reg_aldo1>;
+	 */
+	vcc-pm-supply = <&reg_aldo1>;
+};
+
 &spdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&spdif_tx_pin>;
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
index ab87c3447cd7..f005072c68a1 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
@@ -176,16 +176,12 @@ &pio {
 	vcc-pg-supply = <&reg_vcc_wifi_io>;
 };
 
-&r_ir {
+&r_i2c {
 	status = "okay";
-};
 
-&r_rsb {
-	status = "okay";
-
-	axp805: pmic@745 {
+	axp805: pmic@36 {
 		compatible = "x-powers,axp805", "x-powers,axp806";
-		reg = <0x745>;
+		reg = <0x36>;
 		interrupt-parent = <&r_intc>;
 		interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>;
 		interrupt-controller;
@@ -296,6 +292,10 @@ sw {
 	};
 };
 
+&r_ir {
+	status = "okay";
+};
+
 &rtc {
 	clocks = <&ext_osc32k>;
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
index d05dc5d6e6b9..e34dbb992021 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
@@ -113,20 +113,12 @@ &pio {
 	vcc-pg-supply = <&reg_aldo1>;
 };
 
-&r_ir {
+&r_i2c {
 	status = "okay";
-};
 
-&r_pio {
-	vcc-pm-supply = <&reg_bldo3>;
-};
-
-&r_rsb {
-	status = "okay";
-
-	axp805: pmic@745 {
+	axp805: pmic@36 {
 		compatible = "x-powers,axp805", "x-powers,axp806";
-		reg = <0x745>;
+		reg = <0x36>;
 		interrupt-parent = <&r_intc>;
 		interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>;
 		interrupt-controller;
@@ -241,6 +233,14 @@ sw {
 	};
 };
 
+&r_ir {
+	status = "okay";
+};
+
+&r_pio {
+	vcc-pm-supply = <&reg_bldo3>;
+};
+
 &rtc {
 	clocks = <&ext_osc32k>;
 };
-- 
2.49.0

On Sun, 13 Apr 2025 15:58:48 +0200, Jernej Skrabec wrote:
> This reverts commit 531fdbeedeb89bd32018a35c6e137765c9cc9e97.
> 
> Hardware that uses I2C wasn't designed with high speeds in mind, so
> communication with PMIC via RSB can intermittently fail. Go back to I2C
> as higher speed and efficiency isn't worth the trouble.
> 
> 
> [...]

Applied to fixes-for-6.15 in git@github.com:linux-sunxi/linux-sunxi.git, thanks!

[1/1] Revert "arm64: dts: allwinner: h6: Use RSB for AXP805 PMIC connection"
      commit: 573f99c7585f597630f14596550c79e73ffaeef4

Best regards,
-- 
Chen-Yu Tsai <wens@csie.org>