ARM: sun8i: h2+: add support for Banana Pi M2 Zero board

Banana Pi M2 Zero board is a H2+-based board by Sinovoip, with a form
factor and GPIO holes similar to Raspberry Pi Zero.

It features:
- Allwinner H2+ SoC
- Single-chip (16-bit) 512MiB DDR3 DRAM
- Ampak AP6212 Wi-Fi/Bluetooth module
- MicroSD slot
- Two MicroUSB Type-B ports (one can only be used to power the board and
  the other features OTG functionality)
- Two keys, a reset and a GPIO-connected key.
- HDMI Type-C (miniHDMI) connector connected to the HDMI part of H2+.
- CSI connector to connect the camera sensor provided by Sinovoip.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index fc8ef3dffed7c84a72906c4214fe862880f9ee41..fa19b1ddd9b54b0276a3f6faabf44daefb5614fa 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -917,6 +917,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
        sun8i-a83t-allwinner-h8homlet-v2.dtb \
        sun8i-a83t-bananapi-m3.dtb \
        sun8i-a83t-cubietruck-plus.dtb \
+       sun8i-h2-plus-bananapi-m2-zero.dtb \
        sun8i-h2-plus-orangepi-zero.dtb \
        sun8i-h3-bananapi-m2-plus.dtb \
        sun8i-h3-beelink-x2.dtb \

diff --git a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
new file mode 100644 (file)
index 0000000..1cdbd9a
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * Based on sun8i-h3-bananapi-m2-plus.dts, which is:
+ *   Copyright (C) 2016 Chen-Yu Tsai <wens@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>
+
+/ {
+       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 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc0_pins_a>;
+       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 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc1_pins_a>;
+       vmmc-supply = <&reg_vcc3v3>;
+       vqmmc-supply = <&reg_vcc3v3>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       bus-width = <4>;
+       non-removable;
+       status = "okay";
+
+       brcmf: wifi@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>, <&uart1_rts_cts_pins>;
+       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";
+};