- u-boot v2026.04-rcX has bumped dt-rebasing to v6.18, thus it knows about
NPU nodes now and we can simply symlink to kernel DT, reducing duplication by a lot
- rockchip64-6.19: mainline kernel (edge/6.19):
- most stuff works, incl 4G modem, NPU, RS-485, RS-232, HDMI-RX
- except:
- type-c (fusb302, I've no schematics nor will to reverse)
- DisplayPort (I don't have test hardware)
- Analog Audio (ditto)
- keep vendor u-boot for vendor branch
- mainline u-boot v2026.01:
- same DT as edge kernel, save for NPU nodes
- boot order: NVMe -> SATA -> USB -> eMMC -> Ethernet/PXE
- stable MAC addresses for GMAC0/1 via DT aliases (confirm with logging patch)
This commit enables generation of `u-boot-rockchip-spi-sata.bin`.
Flashing this to SPI flash enables U-Boot to communicate with an
attached SATA m.2 SSD, thereby allowing booting directly from SPI flash
to SATA SSD.
- a bit verbose but confirms missing `ethernet0`/`1` alias was the cause of random MACs for at least a few boards
- there's quite a few boards to fix, so we might want to pull this one level up later
- Switched to the binman-atf-mainline scenario with the same rkbin DDR blob
rk3399_ddr_933MHz_v1.25.bin (TPL blob, as in the old working loader). DRAM init is correct, full
4 GB visible, Linux boots.
- U-Boot and DTS updated to v2026.01-rc5. Added MDIO/PHY node and phy-handle in rk3399-kobol-
helios64.dts, fixing “mdio node is missing”. Disabled i2s2 in the U-Boot DT to avoid rockchip-
i2s ... Could not register PCM.
- boot_targets in U-Boot config shortened (mmc1, scsi0, usb0, pxe, dhcp) to avoid env_buf ... too
small; however, the last built binary still shows the warning (needs rebuild with the shortened
list or enlarging the buffer).
- Boot flow: bootstd scans SD (mmc0) and eMMC (mmc1); SD boot works even without mmc0 in
boot_targets.
- Other changes: defconfig has CONFIG_ROCKCHIP_EXTERNAL_TPL=y to use the external DDR blob.
Boots.
- fix bootorder (SD -> NVMe -> eMMC); USB disabled as nonworking with mainline still
- use the DT from rockchip64-6.18 so a single source for both u-boot and kernel
- note: the first (and only) RTL8169 used by u-boot is the port closest to board edge
- boot order: NVMe -> MMC
- GMAC works
- nvme works
- `ums` et al working
- usb3 ports (on carrier board) work
- DT is copy (not symlink) from kernel DT due to NPU nodes
- the gmac works, but is connected to switch chip that is not supported by u-boot
- here I disable gmac1 for the u-boot DT
- that allows for easier booting from USB ethernet adapters
- Add mainline U-Boot support for edge branch (v2026.01-rc2)
- Add U-Boot defconfig patch for nanopi-r76s
- Fix USB3.0 Type-A host port configuration in DTS
- Enable USB OTG0 controller in host mode with power GPIO control
- Set KERNEL_TEST_TARGET to edge
