board: rockchip: Add minimal generic RK3328 board

Add a minimal generic RK3328 board that only have eMMC, SDMMC, SPI flash
and USB OTG enabled. This defconfig can be used to boot from eMMC,
SD-card or SPI flash on most RK3328 boards that follow reference board
design.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Christopher Obbard <christopher.obbard@linaro.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

arch/arm/dts/rk3328-generic-u-boot.dtsi

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3328-u-boot.dtsi"
+
+&gpio0 {
+	/delete-property/ bootph-pre-ram;
+};
+
+&pcfg_pull_down_4ma {
+	bootph-pre-ram;
+	bootph-some-ram;
+};
+
+&spi0 {
+	flash@0 {
+		bootph-pre-ram;
+		bootph-some-ram;
+	};
+};
+
+&spi0m2_clk {
+	bootph-pre-ram;
+	bootph-some-ram;
+};
+
+&spi0m2_cs0 {
+	bootph-pre-ram;
+	bootph-some-ram;
+};
+
+&spi0m2_rx {
+	bootph-pre-ram;
+	bootph-some-ram;
+};
+
+&spi0m2_tx {
+	bootph-pre-ram;
+	bootph-some-ram;
+};

arch/arm/dts/rk3328-generic.dts

@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Minimal generic DT for RK3328 with eMMC, SD-card, SPI flash and USB OTG enabled
+ */
+
+/dts-v1/;
+#include "rk3328.dtsi"
+
+/ {
+	model = "Generic RK3328";
+	compatible = "rockchip,rk3328";
+
+	aliases {
+		mmc0 = &emmc;
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial2:1500000n8";
+	};
+};
+
+&emmc {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_clk &emmc_cmd &emmc_bus8>;
+	status = "okay";
+};
+
+&sdmmc0m1_pin {
+	rockchip,pins = <0 RK_PD6 RK_FUNC_GPIO &pcfg_pull_down_4ma>;
+};
+
+&sdmmc {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	disable-wp;
+	no-mmc;
+	no-sdio;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_dectn &sdmmc0_bus4 &sdmmc0m1_pin>;
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+	};
+};
+
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_otg {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&usb20_otg {
+	dr_mode = "peripheral";
+	status = "okay";
+};

arch/arm/mach-rockchip/Kconfig

@@ -201,7 +201,6 @@ config ROCKCHIP_RK3328
 	select SUPPORT_SPL
 	select SPL
 	select SUPPORT_TPL
-	select TPL
 	select TPL_HAVE_INIT_STACK if TPL
 	imply ARMV8_CRYPTO
 	imply ARMV8_SET_SMPEN
@@ -218,6 +217,7 @@ config ROCKCHIP_RK3328
 	imply SPL_ROCKCHIP_COMMON_BOARD
 	imply SPL_SEPARATE_BSS
 	imply SPL_SERIAL
+	imply TPL if !ROCKCHIP_EXTERNAL_TPL
 	imply TPL_ROCKCHIP_COMMON_BOARD
 	imply TPL_SERIAL
 	help

board/rockchip/evb_rk3328/MAINTAINERS

@@ -7,6 +7,12 @@ F:      configs/evb-rk3328_defconfig
 F:      arch/arm/dts/rk3328-evb.dts
 F:      arch/arm/dts/rk3328-evb-u-boot.dtsi
 
+GENERIC-RK3328
+M:	Jonas Karlman <jonas@kwiboo.se>
+S:	Maintained
+F:	configs/generic-rk3328_defconfig
+F:	arch/arm/dts/rk3328-generic*
+
 NANOPI-R2C-RK3328
 M:      Tianling Shen <cnsztl@gmail.com>
 S:      Maintained

configs/generic-rk3328_defconfig

@@ -0,0 +1,90 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SF_DEFAULT_SPEED=25000000
+CONFIG_DEFAULT_DEVICE_TREE="rk3328-generic"
+CONFIG_DM_RESET=y
+CONFIG_ROCKCHIP_RK3328=y
+CONFIG_ROCKCHIP_EXTERNAL_TPL=y
+CONFIG_ROCKCHIP_SPI_IMAGE=y
+CONFIG_SYS_LOAD_ADDR=0x800800
+CONFIG_DEBUG_UART_BASE=0xFF130000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
+CONFIG_SPL_SPI=y
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_SPL_FIT_SIGNATURE=y
+CONFIG_SPL_LOAD_FIT=y
+# CONFIG_BOOTMETH_VBE is not set
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3328-generic.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_SPL_MAX_SIZE=0x40000
+CONFIG_SPL_PAD_TO=0x7f8000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_SPL_SPI_LOAD=y
+CONFIG_SYS_SPI_U_BOOT_OFFS=0x60000
+CONFIG_SPL_ATF=y
+CONFIG_SPL_ATF_NO_PLATFORM_PARAM=y
+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_ROCKUSB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_RNG=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_SPL_OF_CONTROL=y
+# CONFIG_OF_UPSTREAM is not set
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_NO_NET=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_REGMAP=y
+CONFIG_SPL_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_SPL_SYSCON=y
+# CONFIG_ADC is not set
+CONFIG_CLK=y
+CONFIG_SPL_CLK=y
+# CONFIG_USB_FUNCTION_FASTBOOT is not set
+CONFIG_ROCKCHIP_GPIO=y
+# CONFIG_ROCKCHIP_IODOMAIN is not set
+CONFIG_SUPPORT_EMMC_RPMB=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_SPI_FLASH_SFDP_SUPPORT=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SILICONKAISER=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XMC=y
+CONFIG_SPI_FLASH_XTX=y
+CONFIG_SPI_FLASH_ZBIT=y
+CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_PINCTRL=y
+CONFIG_SPL_PINCTRL=y
+CONFIG_RAM=y
+CONFIG_SPL_RAM=y
+CONFIG_DM_RNG=y
+CONFIG_RNG_ROCKCHIP=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_ROCKCHIP_SPI=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
+CONFIG_USB=y
+CONFIG_DM_USB_GADGET=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_DWC2_OTG=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_USB_FUNCTION_ROCKUSB=y
+CONFIG_ERRNO_STR=y

doc/board/rockchip/rockchip.rst

@@ -66,6 +66,7 @@ List of mainline supported Rockchip boards:
      - FriendlyElec NanoPi R2C Plus (nanopi-r2c-plus-rk3328)
      - FriendlyElec NanoPi R2S (nanopi-r2s-rk3328)
      - FriendlyElec NanoPi R2S Plus (nanopi-r2s-plus-rk3328)
+     - Generic RK3328 (generic-rk3328)
      - Pine64 Rock64 (rock64-rk3328)
      - Radxa ROCK Pi E (rock-pi-e-rk3328)
      - Xunlong Orange Pi R1 Plus (orangepi-r1-plus-rk3328)