[PATCH 2/4] board: rockchip: Add Radxa ROCK 2A/2F
Jonas Karlman
jonas at kwiboo.se
Sun Oct 19 22:58:37 CEST 2025
The ROCK 2 Family is a high-performance SBC (Single Board Computer)
developed by Radxa, based on the Rockchip RK3528A.
The Radxa E20C shares some board characteristics with the ROCK 2 family
boards.
Add support for the ROCK 2A and 2F boards. The radxa-e20c-rk3528 target
is also extended to support booting ROCK 2 boards.
Features tested on a ROCK 2A v1.202:
- SD-card boot
- Ethernet
- USB host (with pending DT changes)
Features tested on a ROCK 2F v1.016:
- SD-card boot
- eMMC boot
- USB host (with pending DT changes)
Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi | 5 ++
arch/arm/dts/rk3528-rock-2-u-boot.dtsi | 16 +++++
arch/arm/dts/rk3528-rock-2a-u-boot.dtsi | 3 +
arch/arm/dts/rk3528-rock-2f-u-boot.dtsi | 3 +
arch/arm/mach-rockchip/rk3528/Kconfig | 7 +++
board/radxa/rock-2-rk3528/Kconfig | 14 +++++
board/radxa/rock-2-rk3528/MAINTAINERS | 6 ++
board/radxa/rock-2-rk3528/Makefile | 3 +
board/radxa/rock-2-rk3528/rock-2-rk3528.c | 60 +++++++++++++++++++
configs/radxa-e20c-rk3528_defconfig | 3 +
configs/rock-2-rk3528_defconfig | 68 ++++++++++++++++++++++
doc/board/rockchip/rockchip.rst | 1 +
12 files changed, 189 insertions(+)
create mode 100644 arch/arm/dts/rk3528-rock-2-u-boot.dtsi
create mode 100644 arch/arm/dts/rk3528-rock-2a-u-boot.dtsi
create mode 100644 arch/arm/dts/rk3528-rock-2f-u-boot.dtsi
create mode 100644 board/radxa/rock-2-rk3528/Kconfig
create mode 100644 board/radxa/rock-2-rk3528/MAINTAINERS
create mode 100644 board/radxa/rock-2-rk3528/Makefile
create mode 100644 board/radxa/rock-2-rk3528/rock-2-rk3528.c
create mode 100644 configs/rock-2-rk3528_defconfig
diff --git a/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi b/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
index 3e2fbd81da17..e8c8dc2f0324 100644
--- a/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
+++ b/arch/arm/dts/rk3528-radxa-e20c-u-boot.dtsi
@@ -2,6 +2,11 @@
#include "rk3528-u-boot.dtsi"
+&saradc {
+ bootph-pre-ram;
+ vdd-microvolts = <1800000>;
+};
+
&vdd_arm {
regulator-init-microvolt = <953000>;
};
diff --git a/arch/arm/dts/rk3528-rock-2-u-boot.dtsi b/arch/arm/dts/rk3528-rock-2-u-boot.dtsi
new file mode 100644
index 000000000000..e8c8dc2f0324
--- /dev/null
+++ b/arch/arm/dts/rk3528-rock-2-u-boot.dtsi
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3528-u-boot.dtsi"
+
+&saradc {
+ bootph-pre-ram;
+ vdd-microvolts = <1800000>;
+};
+
+&vdd_arm {
+ regulator-init-microvolt = <953000>;
+};
+
+&vdd_logic {
+ regulator-init-microvolt = <900000>;
+};
diff --git a/arch/arm/dts/rk3528-rock-2a-u-boot.dtsi b/arch/arm/dts/rk3528-rock-2a-u-boot.dtsi
new file mode 100644
index 000000000000..bd35ef882983
--- /dev/null
+++ b/arch/arm/dts/rk3528-rock-2a-u-boot.dtsi
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3528-rock-2-u-boot.dtsi"
diff --git a/arch/arm/dts/rk3528-rock-2f-u-boot.dtsi b/arch/arm/dts/rk3528-rock-2f-u-boot.dtsi
new file mode 100644
index 000000000000..bd35ef882983
--- /dev/null
+++ b/arch/arm/dts/rk3528-rock-2f-u-boot.dtsi
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk3528-rock-2-u-boot.dtsi"
diff --git a/arch/arm/mach-rockchip/rk3528/Kconfig b/arch/arm/mach-rockchip/rk3528/Kconfig
index 993b2dd274ea..480ac2942ff7 100644
--- a/arch/arm/mach-rockchip/rk3528/Kconfig
+++ b/arch/arm/mach-rockchip/rk3528/Kconfig
@@ -1,5 +1,10 @@
if ROCKCHIP_RK3528
+config TARGET_RADXA_ROCK_2_RK3528
+ bool "Radxa ROCK 2A/2F"
+ help
+ Radxa ROCK 2A/2F single board computers with a RK3528A SoC.
+
config ROCKCHIP_BOOT_MODE_REG
default 0xff370200
@@ -9,6 +14,8 @@ config ROCKCHIP_STIMER_BASE
config SYS_SOC
default "rk3528"
+source "board/radxa/rock-2-rk3528/Kconfig"
+
config SYS_CONFIG_NAME
default "rk3528_common"
diff --git a/board/radxa/rock-2-rk3528/Kconfig b/board/radxa/rock-2-rk3528/Kconfig
new file mode 100644
index 000000000000..5f1ad10c0edf
--- /dev/null
+++ b/board/radxa/rock-2-rk3528/Kconfig
@@ -0,0 +1,14 @@
+if TARGET_RADXA_ROCK_2_RK3528
+
+config SYS_BOARD
+ default "rock-2-rk3528"
+
+config SYS_VENDOR
+ default "radxa"
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+ def_bool y
+ select ADC
+ select SPL_ADC
+
+endif
diff --git a/board/radxa/rock-2-rk3528/MAINTAINERS b/board/radxa/rock-2-rk3528/MAINTAINERS
new file mode 100644
index 000000000000..841bd28450f7
--- /dev/null
+++ b/board/radxa/rock-2-rk3528/MAINTAINERS
@@ -0,0 +1,6 @@
+RADXA-ROCK-2-RK3528
+M: Jonas Karlman <jonas at kwiboo.se>
+S: Maintained
+F: board/radxa/rock-2-rk3528
+F: configs/rock-2-rk3528_defconfig
+F: arch/arm/dts/rk3528-rock-2*
diff --git a/board/radxa/rock-2-rk3528/Makefile b/board/radxa/rock-2-rk3528/Makefile
new file mode 100644
index 000000000000..b3e0ad0b5408
--- /dev/null
+++ b/board/radxa/rock-2-rk3528/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y += rock-2-rk3528.o
diff --git a/board/radxa/rock-2-rk3528/rock-2-rk3528.c b/board/radxa/rock-2-rk3528/rock-2-rk3528.c
new file mode 100644
index 000000000000..2d265b67f0df
--- /dev/null
+++ b/board/radxa/rock-2-rk3528/rock-2-rk3528.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <adc.h>
+#include <env.h>
+
+#define HW_ID_CHANNEL 2
+
+struct board_model {
+ unsigned int low;
+ unsigned int high;
+ const char *fdtfile;
+};
+
+static const struct board_model board_models[] = {
+ { 63, 278, "rockchip/rk3528-rock-2a.dtb" },
+ { 291, 392, "rockchip/rk3528-radxa-e20c.dtb" },
+ { 519, 733, "rockchip/rk3528-rock-2f.dtb" },
+};
+
+static const struct board_model *get_board_model(void)
+{
+ unsigned int val;
+ int i, ret;
+
+ ret = adc_channel_single_shot("adc at ffae0000", HW_ID_CHANNEL, &val);
+ if (ret)
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(board_models); i++) {
+ unsigned int min = board_models[i].low;
+ unsigned int max = board_models[i].high;
+
+ if (min <= val && val <= max)
+ return &board_models[i];
+ }
+
+ return NULL;
+}
+
+int rk_board_late_init(void)
+{
+ const struct board_model *model = get_board_model();
+
+ if (model)
+ env_set("fdtfile", model->fdtfile);
+
+ return 0;
+}
+
+int board_fit_config_name_match(const char *name)
+{
+ const struct board_model *model = get_board_model();
+
+ if (model && !strcmp(name, model->fdtfile))
+ return 0;
+
+ return -EINVAL;
+}
diff --git a/configs/radxa-e20c-rk3528_defconfig b/configs/radxa-e20c-rk3528_defconfig
index 0941d1b9be81..fa20424ee7b2 100644
--- a/configs/radxa-e20c-rk3528_defconfig
+++ b/configs/radxa-e20c-rk3528_defconfig
@@ -4,12 +4,14 @@ CONFIG_COUNTER_FREQUENCY=24000000
CONFIG_ARCH_ROCKCHIP=y
CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-radxa-e20c"
CONFIG_ROCKCHIP_RK3528=y
+CONFIG_TARGET_RADXA_ROCK_2_RK3528=y
CONFIG_SYS_LOAD_ADDR=0xc00800
CONFIG_DEBUG_UART_BASE=0xFF9F0000
CONFIG_DEBUG_UART_CLOCK=24000000
CONFIG_DEBUG_UART=y
CONFIG_DEFAULT_FDT_FILE="rockchip/rk3528-radxa-e20c.dtb"
# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_BOARD_RNG_SEED=y
CONFIG_SPL_MAX_SIZE=0x40000
# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
CONFIG_CMD_MEMINFO=y
@@ -26,6 +28,7 @@ CONFIG_CMD_USB_MASS_STORAGE=y
CONFIG_CMD_RNG=y
CONFIG_CMD_REGULATOR=y
# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_OF_LIST="rockchip/rk3528-radxa-e20c rockchip/rk3528-rock-2a rockchip/rk3528-rock-2f"
CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
CONFIG_BUTTON=y
CONFIG_BUTTON_ADC=y
diff --git a/configs/rock-2-rk3528_defconfig b/configs/rock-2-rk3528_defconfig
new file mode 100644
index 000000000000..b9261de460b8
--- /dev/null
+++ b/configs/rock-2-rk3528_defconfig
@@ -0,0 +1,68 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3528-rock-2a"
+CONFIG_ROCKCHIP_RK3528=y
+CONFIG_TARGET_RADXA_ROCK_2_RK3528=y
+CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_DEBUG_UART_BASE=0xFF9F0000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_DEBUG_UART=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3528-rock-2a.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_BOARD_RNG_SEED=y
+CONFIG_SPL_MAX_SIZE=0x40000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_MEMINFO_MAP=y
+CONFIG_CMD_ADC=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MISC=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_ROCKUSB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_RNG=y
+CONFIG_CMD_REGULATOR=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_OF_LIST="rockchip/rk3528-rock-2a rockchip/rk3528-rock-2f rockchip/rk3528-radxa-e20c"
+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_BUTTON_GPIO=y
+# CONFIG_USB_FUNCTION_FASTBOOT is not set
+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_MOTORCOMM=y
+CONFIG_PHY_REALTEK=y
+CONFIG_DM_MDIO=y
+CONFIG_DWC_ETH_QOS=y
+CONFIG_DWC_ETH_QOS_ROCKCHIP=y
+CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
+CONFIG_REGULATOR_PWM=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_DWC3=y
+CONFIG_USB_DWC3_GENERIC=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_USB_FUNCTION_ROCKUSB=y
+CONFIG_ERRNO_STR=y
diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index 542cbc88f57e..918ba9d24b52 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -102,6 +102,7 @@ List of mainline supported Rockchip boards:
* rk3528
- Generic RK3528 (generic-rk3528)
- Radxa E20C (radxa-e20c-rk3528)
+ - Radxa ROCK 2A/2F (rock-2-rk3528)
* rk3566
- Anbernic RGxx3 (anbernic-rgxx3-rk3566)
--
2.51.0
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