[PATCH v2 5/5] ARM64: dts: meson-gxl: add support for the Oranth Tanix TX3 Mini

[martin.blumenstingl@googlemail.com (Martin Blumenstingl)]

The Tanix TX3 Mini is a TV box based on the Amlogic S905W chipset.
There are two variants:
- 1 GiB or 2 GiB of DDR3 memory
- 8 GB or 16 GB eMMC flash

Both variants come with:
- 802.11 b/g/n wifi (Silicon Valley Microelectronics SSV6051, does not
  support Bluetooth)
- an LED 7 segment display with an FD628 controller
- HDMI and AV (CVBS) output
- 2x USB (utilizing both USB ports provided by the SoC)
- micro SD card slot
- serial console (uart_AO) has to be soldered after opening the case

The board seems to be very similar to the P23x and Q20x reference
boards, which is why it includes meson-gx-p23x-q20x.dtsi:
- eMMC reset routed to BOOT_9
- the SDIO wifi chip's reset line is routed to GPIOX_6 and the reference
  clock is 32.768KHz on PWM_E
- SD card detection is routed to CARD_6
- vqmmc of all MMC controllers is hard-wired to 1.8V (VDDIO_BOOT)
- uart_AO can be accessed after opening the case and soldering RX, TX
  and GND lines onto the exposed solder points (marked with RX, TX and
  GND)

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 arch/arm64/boot/dts/amlogic/Makefile          |  1 +
 .../dts/amlogic/meson-gxl-s905w-tx3-mini.dts  | 22 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 arch/arm64/boot/dts/amlogic/meson-gxl-s905w-tx3-mini.dts

diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index e55156dec237..a97c0e2d7bc6 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -19,6 +19,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p230.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p231.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s805x-p241.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-p281.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-tx3-mini.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-khadas-vim2.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-nexbox-a1.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q200.dtb
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905w-tx3-mini.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905w-tx3-mini.dts
new file mode 100644
index 000000000000..789c819c99c4
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905w-tx3-mini.dts
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Martin Blumenstingl <martin.blumenstingl@googlemail.com>.
+ * Based on meson-gxl-s905d-p231.dts:
+ * - Copyright (c) 2016 Endless Computers, Inc.
+ *   Author: Carlo Caione <carlo@endlessm.com>
+ */
+
+/dts-v1/;
+
+#include "meson-gxl-s905x.dtsi"
+#include "meson-gx-p23x-q20x.dtsi"
+
+/ {
+	compatible = "oranth,tx3-mini", "amlogic,s905w", "amlogic,meson-gxl";
+	model = "Oranth Tanix TX3 Mini";
+
+	memory at 0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x40000000>; /* 1 GiB or 2 GiB */
+	};
+};
-- 
2.18.0