This is the serial output when it boots
UUUUUERS
ROM
RBS
ls dis ddr3
ddr init start
ls dis ddr3
dqs_gate0=0x00000004
dqs_gate1=0x00000004
cs0:0x5F0001FF
cs1:0x5F0001FF
dqs_gate0=0x00000004
dqs_gate1=0x00000004
dqs_gate0=0x00000004
dqs_gate1=0x00000004
dqs_gate0=0x00000004
dqs_gate1=0x00000004
dqs_gate0=0x00000004
dqs_gate1=0x00000004
dqs_gate0=0x00000005
dqs_gate1=0x00000005
bist test is ok
ddr init pass
chip id : 0x6B4C3300 0x53686172 0x1
pmic id : 0xA015 0x2721NOTICE: BL31: v1.4-ba0dadd35(release)
NOTICE: BL31: Built : 01:50:56, Jan 17 2025
C0
U-Boot 2015.07 (Jan 29 2026 - 16:53:59 +0800)sharkl3
I2C: ready
DRAM: C0 1 GiB
C0 CPU_type version :2; block value :52437504; val value :3
C0 power off usb !!
C0 last shutdown flag ANA_REG_GLB_POR_OFF_FLAG:0x0
C0 sprd_sdhci_init: host version: 4
C0 csd register(128 bit): d0ffff32 0f5903ff ffffffff 8a404000
C0 mmc_init: 0, time 112
C0 (eMMC)Using default environment
In: serial
Out: C0 serial
Err: C0 serial
C0 bcb info: 2a232425 149/3
C0 isLcdIC : 1
C0 system cfg time load 5
C0 lsecl get emmc_type: 0 emmc_type: 0
C0 check_reboot_mode:get raw rst_mode is 40 and sysdump_flag is 0
C0 hw watchdog int raw status 0x8
C0 boot func array[0] undefined
C0 boot func array[1] undefined
C0 boot func array[2] undefined
C0 boot func array[3] undefined
C0 McuSendBlackScreen 93
C0 usb calibrate configuration timeout,3712,711,3000
C0 boot func array[4] undefined
C0 get boot mode in boot func array[5]
C0 enter boot mode 3
C0 halo_status:pass
C0 lcd start init time:3728ms
C0 dsi power on
C0 dsi global enable
C0 escape clk div = 9
C0 dsi init OK
C0 lanes : 4
C0 freq : 1400000
C0 dphy init OK
C0 [sprdfb][dsi_hal_wait_rd_resp_completed] wait read response time out
C0 [sprdfb][mipi_dsi_rd_pkt] rx payload fifo empty
C0 [sprdfb][td4320_readid] td4320 read id failed:0x0,0x0,0x0,0x0
C0 dphy uninit OK
C0 dsi global disable
C0 dsi power off
C0 dsi uninit OK
C0 [sprdfb][sprd_panel_probe] attach panel 0x4320 failed, try next...
C0 dsi power on
C0 dsi global enable
C0 escape clk div = 3
C0 dsi init OK
C0 lanes : 4
C0 freq : 470000
C0 dphy init OK
C0 McuSendBlackScreen 93
C0 uboot lcd_icn6202_init 0x55555551,100
C0 uboot setavdd: 0x0
C0 lsec icn6202_power
C0 TurnOnLcdAck: 0 -1 0
C0 lsec_lcd_icn6202_mipi2lvds icn6202_readid!
C0 attach panel 0xc16202ff success
C0 lsec icn6202_init!
C0 DPU_CORE_CLK = 384000000
C0 DPI_CLK_SRC = 128000000
C0 the actual dpi_clk = 64000000
C0 dpu run
C0 dispc init OK
C0 Timed out in wait_for_ack: status=210402
C0 I2C_CTL = 0x82107
C0 I2C_ADDR_CFG = 0x90
C0 I2C_COUNT = 0x2
C0 I2C_STATUS = 0x210402
C0 ADDR_DVD0 = 0x33004c
C0 ADDR_DVD1 = 0x0
C0 ADDR_STA0_DVD = 0x68
C0 [sprdfb][LT8912B_Initial] no LT8912B IC!
C0 splashimage addr is 0x000000009d000000, fb size is 0x2a5000
C0 lsec_lcd_splash start logoindex:0 logotype:0 pic_bpix:24 4618 ms
C0 lsec_lcd_splash logo normal display
C0 start flip
C0 lcd init consume:954ms, backlight on time:4682ms
C0 ** File not found /adc.bin **
C0 Error!do_fs_file_read(): ** Error ext4_read_file() **
C0 read_adc_calibration_data: cannot read prodnv /adb.bin.
C0 sprd_get_bandinfo:10 XF 9
sql_set_backlight pwm_index=1 brightness=255
C0 lsec debug was off set loglevel to 1
C0 uboot_set_rpmb_size: rpmb size 4194304
C0 is_wr_rpmb_key_multicore rpmb key not write
C0 uboot_is_wr_rpmb_key rpmb unwritten, call tos
C0 uboot_check_rpmb_key get rpmb package, call tos to check rpmb key
C0
C0 enter mode recovery, consume time: 4617ms
C0 init log partition header success on 4764 times bootup
