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Allwinner: u-boot: Switch PMIC connection to I2C

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This commit is contained in:
Jernej Skrabec 2025-03-15 10:30:41 +01:00
parent d8e1bdf995
commit 3f6fb82fe9
1 changed files with 157 additions and 0 deletions
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157
projects/Allwinner/patches/u-boot/0001-Revert-arm64-dts-allwinner-h6-Use-RSB-for-AXP805-PMI.patch Normal file
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@ -0,0 +1,157 @@
From dec5528de024e8ddd1dafd8461df3a1bdcfc4bad Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@gmail.com>
Date: Sat, 15 Mar 2025 09:57:57 +0100
Subject: [PATCH] Revert "arm64: dts: allwinner: h6: Use RSB for AXP805 PMIC
connection"
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.
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
arch/arm/dts/sun50i-h6-beelink-gs1.dts | 38 +++++++++++++-------------
arch/arm/dts/sun50i-h6-orangepi-3.dts | 14 +++++-----
arch/arm/dts/sun50i-h6-orangepi.dtsi | 22 +++++++--------
3 files changed, 37 insertions(+), 37 deletions(-)
diff --git a/arch/arm/dts/sun50i-h6-beelink-gs1.dts b/arch/arm/dts/sun50i-h6-beelink-gs1.dts
index 529285fc34fd..8359a8ac2a33 100644
--- a/arch/arm/dts/sun50i-h6-beelink-gs1.dts
+++ b/arch/arm/dts/sun50i-h6-beelink-gs1.dts
@@ -151,28 +151,12 @@
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 = <0 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
@@ -290,6 +274,22 @@
};
};
+&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/arm/dts/sun50i-h6-orangepi-3.dts b/arch/arm/dts/sun50i-h6-orangepi-3.dts
index bdcec466246f..f920f8f0a4dd 100644
--- a/arch/arm/dts/sun50i-h6-orangepi-3.dts
+++ b/arch/arm/dts/sun50i-h6-orangepi-3.dts
@@ -175,16 +175,12 @@
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 = <0 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
@@ -295,6 +291,10 @@
};
};
+&r_ir {
+ status = "okay";
+};
+
&rtc {
clocks = <&ext_osc32k>;
};
diff --git a/arch/arm/dts/sun50i-h6-orangepi.dtsi b/arch/arm/dts/sun50i-h6-orangepi.dtsi
index 4403769fc36e..6846797a8afd 100644
--- a/arch/arm/dts/sun50i-h6-orangepi.dtsi
+++ b/arch/arm/dts/sun50i-h6-orangepi.dtsi
@@ -112,20 +112,12 @@
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 = <0 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
@@ -240,6 +232,14 @@
};
};
+&r_ir {
+ status = "okay";
+};
+
+&r_pio {
+ vcc-pm-supply = <&reg_bldo3>;
+};
+
&rtc {
clocks = <&ext_osc32k>;
};
--
2.48.1