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From e7a6e6b0c6506a9f070dbfb2ca948770c47a1d78 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:30:57 -0600
Subject: [PATCH 1/8] arm64: dts: allwinner: pinebook: Remove unused vcc3v3
 regulator

This fixed regulator has no consumers, GPIOs, or other connections.
Remove it.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index 3d894b208901..ff32ca1a495e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -63,13 +63,6 @@ lid_switch {
 		};
 	};
 
-	reg_vcc3v3: vcc3v3 {
-		compatible = "regulator-fixed";
-		regulator-name = "vcc3v3";
-		regulator-min-microvolt = <3300000>;
-		regulator-max-microvolt = <3300000>;
-	};
-
 	wifi_pwrseq: wifi_pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
-- 
2.24.1

From 5eea216437eeff908d6d2942bf893fb77ebfc111 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:30:59 -0600
Subject: [PATCH 2/8] arm64: dts: allwinner: pinebook: Sort device tree nodes

The r_i2c node should come before r_rsb, and in any case should not
separate the axp803 node from its subnodes.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../boot/dts/allwinner/sun50i-a64-pinebook.dts   | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index ff32ca1a495e..77784f7b1da7 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -172,6 +172,14 @@ &pwm {
 	status = "okay";
 };
 
+/* The ANX6345 eDP-bridge is on r_i2c */
+&r_i2c {
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&r_i2c_pl89_pins>;
+	status = "okay";
+};
+
 &r_rsb {
 	status = "okay";
 
@@ -183,14 +191,6 @@ axp803: pmic@3a3 {
 	};
 };
 
-/* The ANX6345 eDP-bridge is on r_i2c */
-&r_i2c {
-	clock-frequency = <100000>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&r_i2c_pl89_pins>;
-	status = "okay";
-};
-
 #include "axp803.dtsi"
 
 &ac_power_supply {
-- 
2.24.1

From 4bdf53ffc64e5c6738c942dcdc422d5ca8a2070a Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:31:00 -0600
Subject: [PATCH 3/8] arm64: dts: allwinner: pinebook: Make simplefb more
 consistent

Boards generally reference the simplefb nodes from the SoC dtsi by
label, not by full path. simplefb_hdmi is already like this in the
Pinebook DTS. Update simplefb_lcd to match.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index 77784f7b1da7..224bed65d008 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -41,12 +41,6 @@ backlight: backlight {
 
 	chosen {
 		stdout-path = "serial0:115200n8";
-
-		framebuffer-lcd {
-			panel-supply = <&reg_dc1sw>;
-			dvdd25-supply = <&reg_dldo2>;
-			dvdd12-supply = <&reg_fldo1>;
-		};
 	};
 
 	gpio_keys {
@@ -316,6 +310,12 @@ &reg_rtc_ldo {
 	regulator-name = "vcc-rtc";
 };
 
+&simplefb_lcd {
+	panel-supply = <&reg_dc1sw>;
+	dvdd25-supply = <&reg_dldo2>;
+	dvdd12-supply = <&reg_fldo1>;
+};
+
 &simplefb_hdmi {
 	vcc-hdmi-supply = <&reg_dldo1>;
 };
-- 
2.24.1

From c0f416de7141bbc713f080ad123b256f6320ec92 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:31:01 -0600
Subject: [PATCH 4/8] arm64: dts: allwinner: pinebook: Document MMC0 CD pin
 name

Normally GPIO pin references are followed by a comment giving the pin
name for searchability. Add the comment here where it was missing.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index 224bed65d008..a1e15777d524 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -119,7 +119,7 @@ &mmc0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc0_pins>;
 	vmmc-supply = <&reg_dcdc1>;
-	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
 	disable-wp;
 	bus-width = <4>;
 	status = "okay";
-- 
2.24.1

From 8818d55ec31fa6e0dc14fb7a4924b3e8d3ecef7d Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:31:02 -0600
Subject: [PATCH 5/8] arm64: dts: allwinner: pinebook: Add GPIO port regulators

Allwinner A64 SoC has separate supplies for PC, PD, PE, PG and PL.

VCC-PC and VCC-PG are supplied by ELDO1 at 1.8v.
VCC-PD is supplied by DCDC1 (VCC-IO) at 3.3v.
VCC-PE is supplied by ALDO1, and is unused.

VCC-PL creates a circular dependency, so it is omitted for now.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../boot/dts/allwinner/sun50i-a64-pinebook.dts  | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index a1e15777d524..1ec39120323f 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -162,6 +162,13 @@ &ohci1 {
 	status = "okay";
 };
 
+&pio {
+	vcc-pc-supply = <&reg_eldo1>;
+	vcc-pd-supply = <&reg_dcdc1>;
+	vcc-pe-supply = <&reg_aldo1>;
+	vcc-pg-supply = <&reg_eldo1>;
+};
+
 &pwm {
 	status = "okay";
 };
@@ -174,6 +181,16 @@ &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_aldo2>;
+	 */
+};
+
 &r_rsb {
 	status = "okay";
 
-- 
2.24.1

From bd863f25d41173e140850772f9a02ffb3b3e0d6b Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:31:03 -0600
Subject: [PATCH 6/8] arm64: dts: allwinner: pinebook: Fix backlight regulator

The output from the backlight regulator is labeled as "VBKLT" in the
schematic. Using the equation and resistor values from the schematic,
the output is approximately 18V, not 3.3V. Since the regulator in use
(SS6640STR) is a boost regulator powered by PS (battery or AC input),
which are both >3.3V, the output could not be 3.3V anyway.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../dts/allwinner/sun50i-a64-pinebook.dts     | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index 1ec39120323f..313f4e6edc19 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -21,22 +21,13 @@ aliases {
 		ethernet0 = &rtl8723cs;
 	};
 
-	vdd_bl: regulator@0 {
-		compatible = "regulator-fixed";
-		regulator-name = "bl-3v3";
-		regulator-min-microvolt = <3300000>;
-		regulator-max-microvolt = <3300000>;
-		gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
-		enable-active-high;
-	};
-
 	backlight: backlight {
 		compatible = "pwm-backlight";
 		pwms = <&pwm 0 50000 0>;
 		brightness-levels = <0 5 10 15 20 30 40 55 70 85 100>;
 		default-brightness-level = <2>;
 		enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* PD23 */
-		power-supply = <&vdd_bl>;
+		power-supply = <&reg_vbklt>;
 	};
 
 	chosen {
@@ -57,6 +48,15 @@ lid_switch {
 		};
 	};
 
+	reg_vbklt: vbklt {
+		compatible = "regulator-fixed";
+		regulator-name = "vbklt";
+		regulator-min-microvolt = <18000000>;
+		regulator-max-microvolt = <18000000>;
+		gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
+		enable-active-high;
+	};
+
 	wifi_pwrseq: wifi_pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
-- 
2.24.1

From 425472eb612873c9c64b41df70020de58448bef3 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:31:04 -0600
Subject: [PATCH 7/8] arm64: dts: allwinner: pinebook: Fix 5v0 boost regulator

Now that AXP803 GPIO support is available, we can properly model
the hardware. Replace the use of GPIO0-LDO with a fixed regulator
controlled by GPIO0. This boost regulator is used to power the
(internal and external) USB ports, as well as the speakers.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../dts/allwinner/sun50i-a64-pinebook.dts     | 27 +++++++++----------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index 313f4e6edc19..c06c540e6c08 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -57,6 +57,15 @@ reg_vbklt: vbklt {
 		enable-active-high;
 	};
 
+	reg_vcc5v0: vcc5v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&axp_gpio 0 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	wifi_pwrseq: wifi_pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
@@ -64,12 +73,7 @@ wifi_pwrseq: wifi_pwrseq {
 
 	speaker_amp: audio-amplifier {
 		compatible = "simple-audio-amplifier";
-		/*
-		 * TODO This is actually a fixed regulator controlled by
-		 * the GPIO line on the PMIC. This should be corrected
-		 * once GPIO support is added for this PMIC.
-		 */
-		VCC-supply = <&reg_ldo_io0>;
+		VCC-supply = <&reg_vcc5v0>;
 		enable-gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>; /* PH7 */
 		sound-name-prefix = "Speaker Amp";
 	};
@@ -316,13 +320,6 @@ &reg_fldo2 {
 	regulator-name = "vdd-cpus";
 };
 
-&reg_ldo_io0 {
-	regulator-min-microvolt = <3300000>;
-	regulator-max-microvolt = <3300000>;
-	regulator-name = "vcc-usb";
-	status = "okay";
-};
-
 &reg_rtc_ldo {
 	regulator-name = "vcc-rtc";
 };
@@ -371,7 +368,7 @@ &usb_otg {
 };
 
 &usbphy {
-	usb0_vbus-supply = <&reg_ldo_io0>;
-	usb1_vbus-supply = <&reg_ldo_io0>;
+	usb0_vbus-supply = <&reg_vcc5v0>;
+	usb1_vbus-supply = <&reg_vcc5v0>;
 	status = "okay";
 };
-- 
2.24.1

From c3aea4ea2117f5dc28da3d4175fc93296653ecd5 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sun, 19 Jan 2020 10:30:58 -0600
Subject: [PATCH 8/8] arm64: dts: allwinner: pinebook: Remove unused AXP803
 regulators

The Pinebook does not use the CSI bus on the A64. In fact it does not
use GPIO port E for anything at all. Thus the following regulators are
not used and do not need voltages set:

 - ALDO1: Connected to VCC-PE only
 - DLDO3: Not connected
 - ELDO3: Not connected

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../boot/dts/allwinner/sun50i-a64-pinebook.dts   | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index c06c540e6c08..12e513ba8f50 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -217,9 +217,7 @@ &battery_power_supply {
 };
 
 &reg_aldo1 {
-	regulator-min-microvolt = <2800000>;
-	regulator-max-microvolt = <2800000>;
-	regulator-name = "vcc-csi";
+	regulator-name = "vcc-pe";
 };
 
 &reg_aldo2 {
@@ -282,12 +280,6 @@ &reg_dldo2 {
 	regulator-name = "vcc-edp";
 };
 
-&reg_dldo3 {
-	regulator-min-microvolt = <3300000>;
-	regulator-max-microvolt = <3300000>;
-	regulator-name = "avdd-csi";
-};
-
 &reg_dldo4 {
 	regulator-min-microvolt = <3300000>;
 	regulator-max-microvolt = <3300000>;
@@ -301,12 +293,6 @@ &reg_eldo1 {
 	regulator-name = "cpvdd";
 };
 
-&reg_eldo3 {
-	regulator-min-microvolt = <1800000>;
-	regulator-max-microvolt = <1800000>;
-	regulator-name = "vdd-1v8-csi";
-};
-
 &reg_fldo1 {
 	regulator-min-microvolt = <1200000>;
 	regulator-max-microvolt = <1200000>;
-- 
2.24.1
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