NanoPC-T6 missing sfc node in device tree

[Joshua-Riek]

The devnode /dev/mtdblock0 does not exist. The device tree is missing the sfc node.

[Joshua-Riek]

Here is a patch for the missing sfc node.

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts
index 47a1030a4c73..5a62a440c243 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dts
@@ -478,6 +478,37 @@ &pcie3x4 {
        status = "okay";
 };
 
+&sfc {
+       status = "okay";
+       max-freq = <50000000>;
+       #address-cells = <1>;
+       #size-cells = <0>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&fspim1_pins>;
+
+       spi_flash: spi-flash@0 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               compatible = "jedec,spi-nor";
+               reg = <0x0>;
+               spi-max-frequency = <50000000>;
+               spi-tx-bus-width = <1>;
+               spi-rx-bus-width = <4>;
+               status = "okay";
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       loader@0 {
+                               label = "loader";
+                               reg = <0x0 0x1000000>;
+                       };
+               };
+       };
+};
+
 &pinctrl {
        gpio-leds {
                sys_led_pin: sys-led-pin {
@@ -537,6 +568,25 @@ pcie_m2_1_pwren: pcie-m21-pwren {
                };
        };
 
+       fspi {
+               /omit-if-no-ref/
+               fspim1_pins: fspim1-pins {
+                       rockchip,pins =
+                               /* fspi_clk_m1 */
+                               <2 RK_PB3 2 &pcfg_pull_up_drv_level_2>,
+                               /* fspi_cs0n_m1 */
+                               <2 RK_PB4 2 &pcfg_pull_up_drv_level_2>,
+                               /* fspi_d0_m1 */
+                               <2 RK_PA6 2 &pcfg_pull_up_drv_level_2>,
+                               /* fspi_d1_m1 */
+                               <2 RK_PA7 2 &pcfg_pull_up_drv_level_2>,
+                               /* fspi_d2_m1 */
+                               <2 RK_PB0 2 &pcfg_pull_up_drv_level_2>,
+                               /* fspi_d3_m1 */
+                               <2 RK_PB1 2 &pcfg_pull_up_drv_level_2>;
+               };
+    };
+
        sdmmc {
                sd_s0_pwr: sd-s0-pwr {
                        rockchip,pins = <4 RK_PA5 RK_FUNC_GPIO &pcfg_pull_down>;

[Joshua-Riek]

This patch was confirmed working by @young-bob, see #223 (comment).

[young-bob]

Yes, I confirmed and succeeded on the v1.21 image.

The steps from the wiki are as below.

1. Download the v1.21 NanoPC-T6 image and flash it to an SD Card.

https://github.com/Joshua-Riek/ubuntu-rockchip/releases/download/v1.21/ubuntu-22.04.2-preinstalled-desktop-arm64-nanopc-t6.img.xz

2. Boot from the SD Card.
3. Update rk3588-nanopc-t6.dtb.

wget https://github.com/Joshua-Riek/ubuntu-rockchip/files/12152840/rk3588-nanopc-t6.zip
unzip rk3588-nanopc-t6.zip 
sudo cp rk3588-nanopc-t6.dtb /boot/firmware/dtbs/rk3588-nanopc-t6.dtb
sync
sudo reboot

4. Write the bootloader to the SPI NOR flash.

sudo dd if=/lib/u-boot-friendlyelec-rk3588/rkspi_loader.img of=/dev/mtdblock0 conv=notrunc
sync

5. Write the NanoPC-T6 image to NVMe

xz -dc ubuntu-22.04.2-preinstalled-desktop-arm64-nanopc-t6.img.xz | sudo dd of=/dev/nvme0n1 bs=4k
sync

6. Remove the SD Card and reboot, the system will load from NVMe.