[PATCH 3/3] sunxi: H616: Add OrangePi Zero 3 board support

[Andre Przywara <andre.przywara@arm.com>]

The OrangePi Zero 3 is a small development board featuring the Allwinner
H618 SoC, shipping with up to 4GB of DRAM, Gigabit Ethernet, a micro-HDMI
connector and two USB sockets.
The board uses LPDDR4 DRAM and an X-Powers AXP313a PMIC, support for
which was recently added to U-Boot.

Add a defconfig file selecting the right drivers and DRAM options.
Since the .dts file was synced from the Linux kernel repo already, we
just need to add one line to the Makefile to actually build the .dtb.

The DRAM parameters were derived from the values found in the BSP DRAM
drivers on the SPI NOR flash.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 arch/arm/dts/Makefile            |  1 +
 board/sunxi/MAINTAINERS          |  5 +++++
 configs/orangepi_zero3_defconfig | 30 ++++++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 configs/orangepi_zero3_defconfig

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 1be08c5fdc2..5fc888680b3 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -835,6 +835,7 @@ dtb-$(CONFIG_MACH_SUN50I_H6) += \
 	sun50i-h6-tanix-tx6-mini.dtb
 dtb-$(CONFIG_MACH_SUN50I_H616) += \
 	sun50i-h616-orangepi-zero2.dtb \
+	sun50i-h618-orangepi-zero3.dtb \
 	sun50i-h616-x96-mate.dtb
 dtb-$(CONFIG_MACH_SUN50I) += \
 	sun50i-a64-amarula-relic.dtb \
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 00614372119..f556857a391 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -455,6 +455,11 @@ M:	Jernej Skrabec <jernej.skrabec@siol.net>
 S:	Maintained
 F:	configs/orangepi_zero2_defconfig
 
+ORANGEPI ZERO 3 BOARD
+M:	Andre Przywara <andre.przywara@arm.com>
+S:	Maintained
+F:	configs/orangepi_zero3_defconfig
+
 ORANGEPI PC 2 BOARD
 M:	Andre Przywara <andre.przywara@arm.com>
 S:	Maintained
diff --git a/configs/orangepi_zero3_defconfig b/configs/orangepi_zero3_defconfig
new file mode 100644
index 00000000000..e59044f6639
--- /dev/null
+++ b/configs/orangepi_zero3_defconfig
@@ -0,0 +1,30 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_DEFAULT_DEVICE_TREE="sun50i-h618-orangepi-zero3"
+CONFIG_SPL=y
+CONFIG_DRAM_SUN50I_H616_DX_ODT=0x07070707
+CONFIG_DRAM_SUN50I_H616_DX_DRI=0x0e0e0e0e
+CONFIG_DRAM_SUN50I_H616_CA_DRI=0x0e0e
+CONFIG_DRAM_SUN50I_H616_ODT_EN=0xaaaaeeee
+CONFIG_DRAM_SUN50I_H616_TPR6=0x44000000
+CONFIG_DRAM_SUN50I_H616_TPR10=0x402f6663
+CONFIG_DRAM_SUN50I_H616_TPR11=0x24242624
+CONFIG_DRAM_SUN50I_H616_TPR12=0x0f0f100f
+CONFIG_MACH_SUN50I_H616=y
+CONFIG_SUNXI_DRAM_H616_LPDDR4=y
+CONFIG_R_I2C_ENABLE=y
+CONFIG_SPL_SPI_SUNXI=y
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_I2C=y
+CONFIG_SPL_SYS_I2C_LEGACY=y
+CONFIG_SYS_I2C_MVTWSI=y
+CONFIG_SYS_I2C_SLAVE=0x7f
+CONFIG_SYS_I2C_SPEED=400000
+CONFIG_SPI_FLASH_ZBIT=y
+CONFIG_PHY_MOTORCOMM=y
+CONFIG_SUN8I_EMAC=y
+CONFIG_AXP313_POWER=y
+CONFIG_SPI=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_MUSB_GADGET=y
-- 
2.35.8