sunxi: Add Libre Computer Board ALL-H3-CC H2+ ver.

This patch adds a device tree file for the H2+ version of the Libre
Computer Board ALL-H3-CC. It is the same board first introduced in
commit afe2754412 ("sunxi: Add support for Libre Computer Board
ALL-H3-CC H3 ver."), with the H3 SoC replaced with the H2+ SoC, and
has only two 2Gb DDR3 chips instead of four.

The device tree utilizes the common board design file for ALL-H3-CC,
providing just the model strings and SoC specifics.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

arch/arm/dts/Makefile

@@ -351,6 +351,7 @@ dtb-$(CONFIG_MACH_SUN8I_A83T) += \
 	sun8i-a83t-cubietruck-plus.dtb \
 	sun8i-a83t-tbs-a711.dts
 dtb-$(CONFIG_MACH_SUN8I_H3) += \
+	sun8i-h2-plus-libretech-all-h3-cc.dtb \
 	sun8i-h2-plus-orangepi-zero.dtb \
 	sun8i-h3-bananapi-m2-plus.dtb \
 	sun8i-h3-libretech-all-h3-cc.dtb \

arch/arm/dts/sun8i-h2-plus-libretech-all-h3-cc.dts

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2018 Chen-Yu Tsai <wens@csie.org>
+ */
+
+/dts-v1/;
+#include "sun8i-h3.dtsi"
+#include "sunxi-libretech-all-h3-cc.dtsi"
+
+/ {
+	model = "Libre Computer Board ALL-H3-CC H2+";
+	compatible = "libretech,all-h3-cc-h2-plus", "allwinner,sun8i-h2-plus";
+};

board/sunxi/MAINTAINERS

@@ -266,9 +266,10 @@ M:	Siarhei Siamashka <siarhei.siamashka@gmail.com>
 S:	Maintained
 F:	configs/MSI_Primo81_defconfig
 
-LIBRETECH ALL-H3-CC H3 BOARD
+LIBRETECH ALL-H3-CC BOARDS
 M:	Chen-Yu Tsai <wens@csie.org>
 S:	Maintained
+F:	configs/libretech_all_h3_cc_h2_plus_defconfig
 F:	configs/libretech_all_h3_cc_h3_defconfig
 
 NANOPI-M1 BOARD

configs/libretech_all_h3_cc_h2_plus_defconfig

@@ -0,0 +1,15 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_SPL=y
+CONFIG_MACH_SUN8I_H3=y
+CONFIG_DRAM_CLK=672
+CONFIG_DRAM_ZQ=3881979
+CONFIG_DRAM_ODT_EN=y
+CONFIG_DEFAULT_DEVICE_TREE="sun8i-h2-plus-libretech-all-h3-cc"
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_EFI_PARTITION is not set
+CONFIG_SUN8I_EMAC=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE=y