It seems that (QSPI-boot variant of) the LS1021ATSN board has been
broken for some years now. First, the SPI clock was far too fast
which prevented booting from it, then the serial output was broken.
In fact while debugging the issue, I've noticed that over the
releases more and more stuff got broken. SPI flash isn't working in
u-boot proper and the attached ethernet switch doesn't work either.
FYI, this is what I'm getting at the moment:
U-Boot 2026.04-rc4-00011-g9017eb478b9e (Mar 18 2026 - 15:22:22 +0100)
CPU: Freescale LayerScape LS1021E, Version: 2.0, (0x87081120)
Clock Configuration:
CPU0(ARMV7):1200 MHz,
Bus:300 MHz, DDR:800 MHz (1600 MT/s data rate),
Reset Configuration Word (RCW):
00000000: 0608000c 00000000 00000000 00000000
00000010: 30000000 08007900 40105a00 21046000
00000020: 00000000 00000000 00000000 10002000
00000030: 20124800 8804b340 00000000 00000000
Model: NXP LS1021A-TSN Board
DRAM: 1 GiB
Using SERDES1 Protocol: 48 (0x30)
Core: 37 devices, 16 uclasses, devicetree: separate
MMC: FSL_SDHC: 0
Loading Environment from SPIFlash... fsl_qspi quadspi@1550000: Invalid chip
select 0:0 (err=-19)
*** Warning - spi_flash_probe_bus_cs() failed, using default environment
EEPROM: Invalid ID (ff ff ff ff)
In: serial@21c0500
Out: serial@21c0500
Err: serial@21c0500
SEC0: RNG instantiated
Net:
Warning: ethernet@2d90000 (eth2) using random MAC address - 3e:66:27:46:5b:c8
Unexpected {device ID, part number}: 0x1e00030e 0x9a83
sja1105 ethernet-switch@1: Device ID check failed: -19
eth3: swp2, eth4: swp3, eth5: swp4
Warning: ethernet@2d10000 (eth0) using random MAC address - d6:78:3b:aa:94:b6
, eth0: ethernet@2d10000
Warning: ethernet@2d50000 (eth1) using random MAC address - 12:ce:20:97:a2:79
, eth1: ethernet@2d50000, eth2: ethernet@2d90000
Hit any key to stop autoboot: 0
Michael Walle (3):
arm: dts: ls1021a-tsn: add default serial output
configs: ls1021atsn: enable serial driver
armv7: ls102xa: fix SPI flash clock
arch/arm/dts/ls1021a-tsn.dts | 4 ++++
arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 2 +-
configs/ls1021atsn_qspi_defconfig | 1 +
3 files changed, 6 insertions(+), 1 deletion(-)
--
2.47.3
