On 2/1/2026 12:38 AM, Jonas Karlman wrote: > This series add initial support for the Rockchip RK3506 SoC. > > Clk and pinctrl drivers have been imported from vendor U-Boot with > some adjustments and fixes. > > Upstream DT is currently not existing for RK3506, so this series does > not add support for any new boards, it only add initial arch support. > > Please see my U-Boot rk3506 branch at [1] for a few more commits that > add DTs and defconfig for e.g. Luckfox Lyra variants and ArmSoM Forge1. > > With this series, board DTs and defconfigs it should be possible to boot > into U-Boot proper (without OP-TEE) and still have support for MMC, > Ethernet, OTP, RNG, LEDs, buttons and USB gadget/host.
Below you can find a boot log from a ArmSoM Forge1 that I forgot to include in the cover letter. DDR d27ac532c4 typ 25/03/11-14:46:28,fwver: v1.06 tREFI:4x, sr_idle:93, pd_idle:13 PHY drv:clk:40,ca:48,DQ:40,odt:240 vrefinner:50%, vrefout:50% dram drv:40,odt:120 sr_dq:0, sr_ca:0, sr_clk:0 rg:0x9-0x1-0x2, 0x0-0x1-0x2,status:a007 rdtrn:0x14-0x2d-0x47(0x33) wrtrn:0x0-0x20-0x3f(0x3f) DDR3, 750MHz BW=16 Col=10 Bk=8 CS0 Row=15 CS=1 Size=512MB out U-Boot SPL 2026.04-rc1-00108-ga72ec1294fc6 (Feb 01 2026 - 11:04:18 +0000) Trying to boot from RAM ## Checking hash(es) for config conf-1 ... OK ## Checking hash(es) for Image firmware-1 ... crc32+ OK ## Checking hash(es) for Image fdt-1 ... crc32+ OK spl_perform_arch_fixups: could not map boot_device to ofpath: -19 spl_perform_arch_fixups: could not map BootROM boot device to ofpath U-Boot 2026.04-rc1-00108-ga72ec1294fc6 (Feb 01 2026 - 11:04:18 +0000) Model: ArmSoM Forge1 SoC: RK3506J DRAM: 512 MiB Core: 168 devices, 31 uclasses, devicetree: separate MMC: mmc@ff480000: 0 Loading Environment from nowhere... OK In: serial@ff0a0000 Out: serial@ff0a0000 Err: serial@ff0a0000 Net: eth0: ethernet@ff4c8000, eth1: ethernet@ff4d0000 Hit any key to stop autoboot: 0 => bdinfo boot_params = 0x00000000 DRAM bank = 0x00000000 -> start = 0x00000000 -> size = 0x20000000 flashstart = 0x00000000 flashsize = 0x00000000 flashoffset = 0x00000000 baudrate = 1500000 bps relocaddr = 0x1ff61000 reloc off = 0x1f761000 Build = 32-bit current eth = ethernet@ff4c8000 ethaddr = a6:e4:17:db:24:ff IP addr = <NULL> fdt_blob = 0x1df36eb0 lmb_dump_all: memory.count = 0x1 memory[0] [0x0-0x1fffffff], 0x20000000 bytes, flags: none reserved.count = 0x2 reserved[0] [0x1cf33000-0x1cf35fff], 0x3000 bytes, flags: no-notify, no-overwrite reserved[1] [0x1cf36e90-0x1fffffff], 0x30c9170 bytes, flags: no-overwrite devicetree = separate serial addr = 0xff0a0000 width = 0x00000004 shift = 0x00000002 offset = 0x00000000 clock = 0x016e3600 arch_number = 0x00000000 TLB addr = 0x1fff0000 irq_sp = 0x1df36ea0 sp start = 0x1df36e90 Early malloc usage: 9c8 / 10000 => meminfo DRAM: 512 MiB Region Base Size End Gap -------------------------------------------------------------------- code 1ff61000 8ea00 1ffefa00 malloc 1df42000 201f000 1ff61000 0 board_info 1df41f70 84 1df41ff4 c global_data 1df41e90 e0 1df41f70 0 devicetree 1df36eb0 afd8 1df41e88 8 stack 1cf36e90 1000000 1df36e90 20 lmb 1cf36e90 0 1cf36e90 0 lmb 1cf33000 3e90 1cf36e90 0 free 0 1cf33000 1cf33000 0 => net list eth0 : ethernet@ff4c8000 a6:e4:17:db:24:ff active eth1 : ethernet@ff4d0000 a6:e4:17:db:24:fe => adc scan adc@ff4e8000 [00]: 1019, 1792961 uV [01]: 1019, 1792961 uV [02]: 0, 0 uV [03]: 1011, 1778885 uV => misc list Device Index Driver ------------------------------------- nvmem@ff4f0000 0 rockchip_otp => rng 00000000: 14 f5 ec e0 40 e0 47 82 43 e6 1d f0 eb db a6 c4 [email protected]....... 00000010: 31 d8 21 2c 7e f9 6a 04 bd d2 ae 6f 81 af ab b2 1.!,~.j....o.... 00000020: 4f a5 b1 c6 36 da 20 cb 58 6a 64 02 2c d6 7e f7 O...6. .Xjd.,.~. 00000030: 15 e4 a3 4e 02 6c 13 9d cf b9 86 2f 7d 55 b0 46 ...N.l...../}U.F => led list green:heartbeat off => button list MASKROM <inactive> => usb start starting USB... USB DWC2 Bus usb@ff780000: 1 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found => usb tree USB device tree: 1 Hub (480 Mb/s, 0mA) U-Boot Root Hub Regards, Jonas > Changes in v2: > - Use common handling of USB bootsource_id 0x81 > - Re-sort the spl_infos list alphanumerically > - Drop use of struct rk3506_cru and of_to_plat() ops > - Define LOG_CATEGORY and use log_debug() in clk driver > - Extract rk3506_clk_init_xpl() from clk bind() ops > - Enable SPL_ARMV7_SET_CORTEX_SMPEN > - Fix mac1 and otg1 access to ddr memory > - Collect a-b and t-b tags (where applicable) > > [1] https://source.denx.de/u-boot/contributors/kwiboo/u-boot/-/commits/rk3506
