[U-Boot] [PATCH v3] sunxi: add support for Banana Pi M2 Zero board

[Jun Nie]

Banana Pi M2 Zero is a board by Sinovoip with Allwinner H2+ SoC, 16-bit
512MiB DDR3 memory, a MicroSD slot, two MicroUSB ports (one OTG and one
powering-only) and a miniHDMI port.

Signed-off-by: Icenowy Zheng <icenowy at aosc.io>
Signed-off-by: Jun Nie <jun.nie at linaro.org>
---
 arch/arm/dts/Makefile                           |   1 +
 arch/arm/dts/sun8i-h2-plus-bananapi-m2-zero.dts | 122 ++++++++++++++++++++++++
 board/sunxi/MAINTAINERS                         |   5 +
 configs/bananapi_m2_zero_defconfig              |  15 +++
 4 files changed, 143 insertions(+)
 create mode 100644 arch/arm/dts/sun8i-h2-plus-bananapi-m2-zero.dts
 create mode 100644 configs/bananapi_m2_zero_defconfig

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 790571b..5d392e8 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -354,6 +354,7 @@ dtb-$(CONFIG_MACH_SUN8I_A83T) += \
 	sun8i-a83t-cubietruck-plus.dtb \
 	sun8i-a83t-tbs-a711.dts
 dtb-$(CONFIG_MACH_SUN8I_H3) += \
+	sun8i-h2-plus-bananapi-m2-zero.dtb \
 	sun8i-h2-plus-libretech-all-h3-cc.dtb \
 	sun8i-h2-plus-orangepi-zero.dtb \
 	sun8i-h3-bananapi-m2-plus.dtb \
diff --git a/arch/arm/dts/sun8i-h2-plus-bananapi-m2-zero.dts b/arch/arm/dts/sun8i-h2-plus-bananapi-m2-zero.dts
new file mode 100644
index 0000000..32a92dc
--- /dev/null
+++ b/arch/arm/dts/sun8i-h2-plus-bananapi-m2-zero.dts
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2017 Icenowy Zheng <icenowy at aosc.io>
+ *
+ * Based on sun8i-h3-bananapi-m2-plus.dts, which is:
+ *   Copyright (C) 2016 Chen-Yu Tsai <wens at csie.org>
+ */
+
+/dts-v1/;
+#include "sun8i-h3.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/sun4i-a10.h>
+
+/ {
+	model = "Banana Pi BPI-M2-Zero";
+	compatible = "sinovoip,bpi-m2-zero", "allwinner,sun8i-h2-plus";
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+
+		pwr_led {
+			label = "bananapi-m2-zero:red:pwr";
+			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PL10 */
+			default-state = "on";
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+
+		sw4 {
+			label = "power";
+			linux,code = <BTN_0>;
+			gpios = <&r_pio 0 3 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	wifi_pwrseq: wifi_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		pinctrl-names = "default";
+		reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
+	};
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&reg_vcc3v3>;
+	bus-width = <4>;
+	/*
+	 * On the production batch of this board the card detect GPIO is
+	 * high active (card inserted), although on the early samples it's
+	 * low active.
+	 */
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
+	status = "okay";
+};
+
+&mmc1 {
+	vmmc-supply = <&reg_vcc3v3>;
+	vqmmc-supply = <&reg_vcc3v3>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	non-removable;
+	status = "okay";
+
+	brcmf: wifi at 1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&pio>;
+		interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 / EINT10 */
+		interrupt-names = "host-wake";
+	};
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins_a>;
+	status = "okay";
+};
+
+&usb_otg {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usbphy {
+	usb0_id_det-gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
+	/*
+	 * There're two micro-USB connectors, one is power-only and another is
+	 * OTG. The Vbus of these two connectors are connected together, so
+	 * the external USB device will be powered just by the power input
+	 * from the power-only USB port.
+	 */
+	status = "okay";
+};
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index e90c87b..e199ec9 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -382,6 +382,11 @@ M:	Icenowy Zheng <icenowy at aosc.io>
 S:	Maintained
 F:	configs/Sinovoip_BPI_M2_Plus_defconfig
 
+SINOVOIP BPI M2 ZERO BOARD
+M:	Icenowy Zheng <icenowy at aosc.io>
+S:	Maintained
+F:	configs/Sinovoip_BPI_M2_Zero_defconfig
+
 SINOVOIP BPI M3 A83T BOARD
 M:	VishnuPatekar <vishnupatekar0510 at gmail.com>
 S:	Maintained
diff --git a/configs/bananapi_m2_zero_defconfig b/configs/bananapi_m2_zero_defconfig
new file mode 100644
index 0000000..668ade5
--- /dev/null
+++ b/configs/bananapi_m2_zero_defconfig
@@ -0,0 +1,15 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SYS_TEXT_BASE=0x4a000000
+CONFIG_MACH_SUN8I_H3=y
+CONFIG_DRAM_CLK=408
+CONFIG_DRAM_ZQ=3881979
+CONFIG_DRAM_ODT_EN=y
+CONFIG_MMC0_CD_PIN="PF6"
+CONFIG_DEFAULT_DEVICE_TREE="sun8i-h2-plus-bananapi-m2-zero"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL=y
+# CONFIG_CMD_FLASH is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_ISO_PARTITION is not set
+# CONFIG_SPL_EFI_PARTITION is not set
-- 
2.7.4