linux-kernel - [PATCH] ARM: dts: sun8i: r40/v40: rewrite BPi M2 Berry DTS to rebase on M2 Ultra

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Date:   Wed, 25 Jul 2018 00:36:55 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
        Icenowy Zheng <icenowy@...c.io>
Subject: [PATCH] ARM: dts: sun8i: r40/v40: rewrite BPi M2 Berry DTS to rebase on M2 Ultra

Banana Pi designs the BPi M2 Berry board to be software compatible with
BPi M2 Ultra, so it's based on M2 Ultra with some function cuts,
including:

- 2048MiB DRAM -> 1024MiB (this should be proceed by the bootloader);
- dropped a LED;
- dropped eMMC;
- dropped USB2 and connect USB1 to a 4-port HUB.

Thus we can make the M2 Berry device tree based on the M2 Ultra, rather
than write one from scratch.

Signed-off-by: Icenowy Zheng <icenowy@...c.io>
---
 .../boot/dts/sun8i-v40-bananapi-m2-berry.dts  | 141 +++---------------
 1 file changed, 24 insertions(+), 117 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts b/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts
index 35859d8f3267..b740c659e623 100644
--- a/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts
+++ b/arch/arm/boot/dts/sun8i-v40-bananapi-m2-berry.dts
@@ -40,143 +40,50 @@
  *     OTHER DEALINGS IN THE SOFTWARE.
  */
 
-/dts-v1/;
-#include "sun8i-r40.dtsi"
-
-#include <dt-bindings/gpio/gpio.h>
+#include "sun8i-r40-bananapi-m2-ultra.dts"
 
 / {
 	model = "Banana Pi M2 Berry";
 	compatible = "sinovoip,bpi-m2-berry", "allwinner,sun8i-r40";
 
-	aliases {
-		serial0 = &uart0;
-	};
-
-	chosen {
-		stdout-path = "serial0:115200n8";
-	};
-
 	leds {
-		compatible = "gpio-leds";
-
-		pwr-led {
-			label = "bananapi:red:pwr";
-			gpios = <&pio 7 20 GPIO_ACTIVE_HIGH>;
-			default-state = "on";
-		};
-
-		user-led {
-			label = "bananapi:green:user";
-			gpios = <&pio 7 21 GPIO_ACTIVE_HIGH>;
-		};
-	};
-
-	reg_vcc5v0: vcc5v0 {
-		compatible = "regulator-fixed";
-		regulator-name = "vcc5v0";
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-		gpio = <&pio 7 23 GPIO_ACTIVE_HIGH>; /* PH23 */
-		enable-active-high;
-	};
-
-	wifi_pwrseq: wifi_pwrseq {
-		compatible = "mmc-pwrseq-simple";
-		reset-gpios = <&pio 6 10 GPIO_ACTIVE_LOW>; /* PG10 WIFI_EN */
+		/* M2 Berry dropped blue LED due to size */
+		/delete-node/ user-led-blue;
 	};
 };
 
 &ehci1 {
 	/* Terminus Tech FE 1.1s 4-port USB 2.0 hub here */
-	status = "okay";
-};
-
-&i2c0 {
-	status = "okay";
-
-	axp22x: pmic@68 {
-		compatible = "x-powers,axp221";
-		reg = <0x34>;
-		interrupt-parent = <&nmi_intc>;
-		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
-	};
-};
-
-#include "axp22x.dtsi"
-
-&reg_aldo3 {
-	regulator-always-on;
-	regulator-min-microvolt = <2700000>;
-	regulator-max-microvolt = <3300000>;
-	regulator-name = "avcc";
-};
-
-&reg_dcdc1 {
-	regulator-always-on;
-	regulator-min-microvolt = <3000000>;
-	regulator-max-microvolt = <3000000>;
-	regulator-name = "vcc-3v0";
-};
-
-&reg_dcdc2 {
-	regulator-always-on;
-	regulator-min-microvolt = <1000000>;
-	regulator-max-microvolt = <1300000>;
-	regulator-name = "vdd-cpu";
-};
-
-&reg_dcdc3 {
-	regulator-always-on;
-	regulator-min-microvolt = <1000000>;
-	regulator-max-microvolt = <1300000>;
-	regulator-name = "vdd-sys";
-};
-
-&reg_dcdc5 {
-	regulator-always-on;
-	regulator-min-microvolt = <1500000>;
-	regulator-max-microvolt = <1500000>;
-	regulator-name = "vcc-dram";
-};
-
-&reg_dldo1 {
-	regulator-min-microvolt = <1800000>;
-	regulator-max-microvolt = <3300000>;
-	regulator-name = "vcc-wifi-io";
 };
 
-&reg_dldo2 {
-	regulator-min-microvolt = <3300000>;
-	regulator-max-microvolt = <3300000>;
-	regulator-name = "vcc-wifi";
+&ehci2 {
+	/*
+	 * M2 Berry dropped wiring out USB2, due to all USB port is
+	 * from a hub at USB1.
+	 */
+	status = "disabled";
 };
 
-&mmc0 {
-	vmmc-supply = <&reg_dcdc1>;
-	bus-width = <4>;
-	cd-gpios = <&pio 7 13 GPIO_ACTIVE_LOW>; /* PH13 */
-	status = "okay";
+&mmc2 {
+	/* M2 Berry has no eMMC */
+	status = "disabled";
 };
 
-&mmc1 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&mmc1_pg_pins>;
-	vmmc-supply = <&reg_dldo2>;
-	vqmmc-supply = <&reg_dldo1>;
-	mmc-pwrseq = <&wifi_pwrseq>;
-	bus-width = <4>;
-	non-removable;
-	status = "okay";
+&ohci1 {
+	/*
+	 * M2 Berry have a Hub connected to the USB1 pins, so no USB1.1 device
+	 * can be directly connected to the USB1 port, thus the OHCI controller
+	 * can be disabled.
+	 */
+	status = "disabled";
 };
 
-&uart0 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&uart0_pb_pins>;
-	status = "okay";
+&ohci2 {
+	/* See comments at &ehci2 */
+	status = "disabled";
 };
 
 &usbphy {
-	usb1_vbus-supply = <&reg_vcc5v0>;
-	status = "okay";
+	/* See comments at &ehci2 */
+	/delete-property/ usb2_vbus-supply;
 };
-- 
2.18.0