[PATCH 2/2] board: rockchip: Add FriendlyElec NanoPi Zero2

[Yao Zi]

FriendlElec NanoPi Zero2 is a super-tiny development board based on
RK3528A SoC. Add board-level configuration and U-Boot-specific
devicetree piece for it.

Signed-off-by: Yao Zi <ziyao at disroot.org>
---
 arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi | 11 +++++
 arch/arm/mach-rockchip/rk3528/MAINTAINERS    |  6 +++
 configs/nanopi-zero2_defconfig               | 46 ++++++++++++++++++++
 doc/board/rockchip/rockchip.rst              |  1 +
 4 files changed, 64 insertions(+)
 create mode 100644 arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi
 create mode 100644 configs/nanopi-zero2_defconfig

diff --git a/arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi b/arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi
new file mode 100644
index 00000000000..3f65d2e1ff1
--- /dev/null
+++ b/arch/arm/dts/rk3528-nanopi-zero2-u-boot.dtsi
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3528-u-boot.dtsi"
+
+&vdd_arm {
+	regulator-init-microvolt = <953000>;
+};
+
+&vdd_logic {
+	regulator-init-microvolt = <901000>;
+};
diff --git a/arch/arm/mach-rockchip/rk3528/MAINTAINERS b/arch/arm/mach-rockchip/rk3528/MAINTAINERS
index f343f71cf7f..853480a58ce 100644
--- a/arch/arm/mach-rockchip/rk3528/MAINTAINERS
+++ b/arch/arm/mach-rockchip/rk3528/MAINTAINERS
@@ -9,3 +9,9 @@ M:	Jonas Karlman <jonas at kwiboo.se>
 S:	Maintained
 F:	arch/arm/dts/rk3528-radxa-e20c*
 F:	configs/radxa-e20c-rk3528_defconfig
+
+NANOPI-ZERO2
+M:	Yao Zi <ziyao at disroot.org>
+S:	Maintained
+F:	arch/arm/dts/rk3528-nanopi-zero2*
+F:	configs/nanopi-zero2_defconfig
diff --git a/configs/nanopi-zero2_defconfig b/configs/nanopi-zero2_defconfig
new file mode 100644
index 00000000000..af14589568c
--- /dev/null
+++ b/configs/nanopi-zero2_defconfig
@@ -0,0 +1,46 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-nanopi-zero2"
+CONFIG_ROCKCHIP_RK3528=y
+CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_DEBUG_UART_BASE=0xFF9F0000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_DEBUG_UART=y
+# CONFIG_BOOTMETH_VBE is not set
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3528-nanopi-zero2.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_SPL_MAX_SIZE=0x40000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_MEMINFO_MAP=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MISC=y
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_RNG=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_BUTTON=y
+CONFIG_BUTTON_ADC=y
+CONFIG_ROCKCHIP_GPIO=y
+CONFIG_LED=y
+CONFIG_LED_GPIO=y
+CONFIG_SUPPORT_EMMC_RPMB=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
+CONFIG_MMC_SDHCI_ROCKCHIP=y
+CONFIG_PHY_REALTEK=y
+CONFIG_DWC_ETH_QOS=y
+CONFIG_DWC_ETH_QOS_ROCKCHIP=y
+CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_ERRNO_STR=y
diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index de3aa79cb5c..b2b7de4e43a 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -100,6 +100,7 @@ List of mainline supported Rockchip boards:
      - Theobroma Systems RK3399-Q7 SoM - Puma (puma_rk3399)
 
 * rk3528
+     - FriendlyElec NanoPi Zero2 (nanopi-zero2)
      - Generic RK3528 (generic-rk3528)
      - Radxa E20C (radxa-e20c-rk3528)
 
-- 
2.50.1