u-boot-at91 U-boot-at91 prints strange characters

Hello

I'm using an ArrowElectronic Shield96 boad which based on SAMA5D27_SIP.

I was able to build:

at91bootstrap (4.0.5+gitAUTOINC+8fe4b67188-r0 )
at91 u-boot (v2022.01-at91+gitAUTOINC+76f7f55e04-r0)
at91 linux kernel (5.15+gitAUTOINC+5aedde3bc3-r0)
rootFS

obtaining a .wic image. After flashed successfully the SDCard with balenaEtcher, I got that the U-boot print strange characters.

AT91Bootstrap 4.0.5 (2022-11-09 13:05:42) 
SD/MMC: Image: Read file u-boot.bin to 0x23f0000 
MMC: ADMA supported 
SD: Card Capacity: High or Extended 
SD: Specification Version 3.0X 
SD/MMC: Done to load image
serial_atmel serial@f8020000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19
 怘▒怘▒f3▒0▒▒▒▒?▒▒▒▒?▒▒<f̆▒f?▒▒▒▒f▒f▒f▒ x ▒x x ▒▒0?3▒x?
▒▒▒▒▒▒▒▒▒▒x ~ ▒▒▒▒▒▒f ▒▒▒▒▒▒03 03▒0▒f3▒▒▒ffff▒ ▒x▒0fx
▒0▒▒f▒▒▒▒▒ ▒▒▒x ▒▒▒▒fff ▒▒f▒▒▒▒f▒▒▒
...
...
 ▒▒Ø▒▒f▒x<x ▒▒▒▒▒▒
Ø▒▒3▒f3xx0▒▒▒▒▒怘▒怘▒3?<??▒▒▒~<▒▒fÆ▒f<▒???▒0303▒ 
Booting Linux on physical CPU 0x0 
Linux version 5.15.68-linux4microchip-2022.10 (oe-user@oe-host) (arm-poky-linux-gnueabi-gcc (GCC) 11.3.0, GNU ld (GNU Binutils) 2.38.20220708) #1 Wed Nov 9 12:48:42 UTC 2022
CPU: ARMv7 Processor [410fc051] revision 1 (ARMv7), cr=10c53c7d CPU: PIPT / VIPT nonaliasing data cache, VIP

Then kernel start normally. I noticed serial_atmel serial@f8020000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19

I'm using, more or less, a sama5d27_som1_ek devices tree, so it should be defined correctly. Seems u-boot change serial baudrate. Is it possible?

Jun 21 '23 08:06 SimoneBongini

Going deeper enabling more verbose logs

Bound device i2s1_gclk to slowck size=40, ptr=4e20, limit=8000: aligned to 20008cc0 size=40, ptr=4e60, limit=8000: aligned to 20008d00 clk_register: name: can0_gclk parent: slowck [0x20004c80] size=50, ptr=4eb0, limit=8000: 20008d40 Bound device can0_gclk to slowck size=40, ptr=4f20, limit=8000: aligned to 20008dc0 size=40, ptr=4f60, limit=8000: aligned to 20008e00 clk_register: name: can1_gclk parent: slowck [0x20004c80] size=50, ptr=4fb0, limit=8000: 20008e40 Bound device can1_gclk to slowck master clk is overclock▒怘▒怘▒f3▒0▒▒▒▒?▒▒▒▒?▒▒<f̆▒f?▒▒▒▒f▒f▒f▒ x ▒x▒x ▒▒0▒▒▒▒ ▒x ▒x ▒x▒x ▒▒▒▒▒▒▒▒▒▒▒▒f ▒▒▒▒▒▒0303▒f̆▒fx3▒▒▒<▒▒▒f▒ ▒▒▒▒ ▒<f▒f▒f▒▒f▒ ▒▒▒▒▒▒▒▒▒▒f▒ ▒03`▒f̆▒f▒f▒▒▒▒<▒▒▒f▒ ▒f▒▒ ▒<f▒f▒f▒▒f▒ ▒▒▒▒▒▒▒▒▒▒f▒▒▒3▒?▒▒▒f▒f▒▒▒▒<▒▒▒f▒▒▒▒x ▒▒<f▒f▒f▒▒f▒

Jun 21 '23 10:06 SimoneBongini

It looks like your USART registers are configured very differently. Could you send a copy of your u-boot.bin and uboot.env Are you using USART1 for the serial output? Could you also try a full clean rebuild for the whole project?

Sep 01 '23 08:09 ryan-wanner

Hi Simone, Booted up your u-boot.bin file I do see the correct output in 115200. Did you make any changes to the device tree in uboot? Based on this error I see that you get "serial_atmel serial@f8020000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19" I think you might have the pinctrl wrong on the dts file

Sep 06 '23 13:09 ryan-wanner

Hi Simone, Booted up your u-boot.bin file I do see the correct output in 115200. Did you make any changes to the device tree in uboot? Based on this error I see that you get "serial_atmel serial@f8020000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19" I think you might have the pinctrl wrong on the dts file

Hi Ryan, I'm using https://github.com/linux4sam/u-boot-at91/blob/linux4sam-2022.10/arch/arm/dts/at91-sama5d27_som1_ek.dts No modifications or other..

Sep 20 '23 14:09 SimoneBongini

Hello Ryan, enabling more verbose log I got:

D/TC:0 0 call_initcalls:40 D/TC:0 0 call_initcalls:40 D/TC:0 0 call_initcalls:40 D/TC:0 0 call_initcalls:40 D/TC:0 0 call_finalcalls:59 I/TC: Primary CPU size=18, ptr=18, limit=8000: 22003ee0 common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:222- drivers/core/lists.c:266- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:239- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:266- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/device.c:93- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:239- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:239- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:266- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:239- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:239- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:239- drivers/core/lists.c:201- drivers/core/lists.c:206- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/lists.c:201- drivers/core/lists.c:222- drivers/core/lists.c:244- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- common/malloc_simple.c:26- drivers/core/uclass.c:325 drivers/core/uclass.c:333 drivers/core/uclass.c:336 drivers/core/uclass.c:325 drivers/core/uclass.c:333 drivers/core/uclass.c:336 drivers/core/uclass.c:325 drivers/core/uclass.c:333 drivers/core/uclass.c:336 drivers/pinctrl/pinctrl-u drivers/pinctrl/pinctrl-u drivers/pinctrl/pinctrl-u drivers/pinctrl/pinctrl-u drivers/core/uclass.c:516 drivers/core/uclass.c:376 drivers/core/uclass.c:385 drivers/core/uclass.c:385 drivers/core/uclass.c:385 drivers/core/uclass.c:385 drivers/core/uclass.c:385 drivers/core/uclass.c:395 drivers/core/uclass.c:519 common/malloc_simple.c:26- drivers/core/uclass.c:325 drivers/core/uclass.c:333 drivers/core/uclass.c:336 drivers/pinctrl/pinctrl-u drivers/core/uclass.c:325 drivers/core/uclass.c:333 drivers/core/uclass.c:336 Šæ€˜€æ€˜€f3æ à˜x Àx ðxÌx À˜ž˜àÀóÌðóÃÏ˜f level 6 sam_init_scmi_server() level 6 mobj_init() level 6 default_mobj_init() level 7 release_probe_lists() level 1 release_external_dt() switching to normal world boot alloc_simple() size=18, ptr=30, limit=8000: 22003ef8 alloc_simple() size=50, ptr=80, limit=8000: 22003f10 lists_bind_fdt() bind node chosen lists_bind_fdt() Device 'chosen' has no compatible string lists_bind_fdt() bind node aliases lists_bind_fdt() Device 'aliases' has no compatible string lists_bind_fdt() bind node memory lists_bind_fdt() Device 'memory' has no compatible string lists_bind_fdt() bind node clocks lists_bind_fdt() Device 'clocks' has no compatible string lists_bind_fdt() bind node cpus lists_bind_fdt() Device 'cpus' has no compatible string lists_bind_fdt() bind node ahb lists_bind_fdt() - attempt to match compatible string 'simple-bus' lists_bind_fdt() - found match at 'simple_bus': 'simple-bus' matches 'simple-bus' alloc_simple() size=18, ptr=98, limit=8000: 22003f60 alloc_simple() size=50, ptr=e8, limit=8000: 22003f78 alloc_simple() size=c, ptr=f4, limit=8000: 22003fc8 lists_bind_fdt() bind node ohci@400000 lists_bind_fdt() - attempt to match compatible string 'atmel,at91rm9200-ohci' lists_bind_fdt() - attempt to match compatible string 'usb-ohci' lists_bind_fdt() No match for node 'ohci@400000' lists_bind_fdt() bind node ehci@500000 lists_bind_fdt() - attempt to match compatible string 'atmel,at91sam9g45-ehci' lists_bind_fdt() Skipping device pre-relocation lists_bind_fdt() bind node sdio-host@a0000000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-sdhci' lists_bind_fdt() - found match at 'atmel_sdhci': 'atmel,sama5d2-sdhci' matches 'atmel,sama5d2-sdhci' alloc_simple() size=18, ptr=10c, limit=8000: 22003fd4 alloc_simple() size=50, ptr=15c, limit=8000: 22003fec alloc_simple() size=130, ptr=28c, limit=8000: 2200403c alloc_simple() size=17, ptr=2a3, limit=8000: 2200416c alloc_simple() size=18, ptr=2bc, limit=8000: 22004184 alloc_simple() size=50, ptr=30c, limit=8000: 2200419c alloc_simple() size=80, ptr=38c, limit=8000: 220041ec lists_bind_fdt() bind node sdio-host@b0000000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-sdhci' lists_bind_fdt() - found match at 'atmel_sdhci': 'atmel,sama5d2-sdhci' matches 'atmel,sama5d2-sdhci' alloc_simple() size=50, ptr=3dc, limit=8000: 2200426c alloc_simple() size=130, ptr=50c, limit=8000: 220042bc alloc_simple() size=17, ptr=523, limit=8000: 220043ec alloc_simple() size=50, ptr=574, limit=8000: 22004404 alloc_simple() size=80, ptr=5f4, limit=8000: 22004454 lists_bind_fdt() bind node apb lists_bind_fdt() - attempt to match compatible string 'simple-bus' lists_bind_fdt() - found match at 'simple_bus': 'simple-bus' matches 'simple-bus' alloc_simple() size=50, ptr=644, limit=8000: 220044d4 alloc_simple() size=c, ptr=650, limit=8000: 22004524 lists_bind_fdt() bind node hlcdc@f0000000 lists_bind_fdt() - attempt to match compatible string 'atmel,at91sam9x5-hlcdc' lists_bind_fdt() No match for node 'hlcdc@f0000000' lists_bind_fdt() bind node spi@f0024000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-qspi' lists_bind_fdt() - found match at 'atmel_qspi': 'atmel,sama5d2-qspi' matches 'atmel,sama5d2-qspi' alloc_simple() size=18, ptr=668, limit=8000: 22004530 alloc_simple() size=50, ptr=6b8, limit=8000: 22004548 device_bind_common() - seq=0 lists_bind_fdt() bind node spi_flash@0 lists_bind_fdt() - attempt to match compatible string 'jedec,spi-nor' lists_bind_fdt() - found match at 'jedec_spi_nor': 'jedec,spi-nor' matches 'jedec,spi-nor' alloc_simple() size=18, ptr=6d0, limit=8000: 22004598 alloc_simple() size=50, ptr=720, limit=8000: 220045b0 alloc_simple() size=c, ptr=72c, limit=8000: 22004600 lists_bind_fdt() bind node ethernet@f8008000 lists_bind_fdt() - attempt to match compatible string 'cdns,macb' lists_bind_fdt() Skipping device pre-relocation lists_bind_fdt() bind node timer@f800c000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-tcb' lists_bind_fdt() - attempt to match compatible string 'simple-mfd' lists_bind_fdt() - found match at 'simple_bus': 'simple-bus' matches 'simple-mfd' alloc_simple() size=50, ptr=77c, limit=8000: 2200460c alloc_simple() size=c, ptr=788, limit=8000: 2200465c lists_bind_fdt() bind node timer@0 lists_bind_fdt() - attempt to match compatible string 'atmel,tcb-timer' lists_bind_fdt() - found match at 'atmel_tcb': 'atmel,tcb-timer' matches 'atmel,tcb-timer' alloc_simple() size=18, ptr=7a0, limit=8000: 22004668 alloc_simple() size=50, ptr=7f0, limit=8000: 22004680 alloc_simple() size=4, ptr=7f4, limit=8000: 220046d0 lists_bind_fdt() bind node serial@f8020000 lists_bind_fdt() - attempt to match compatible string 'atmel,at91sam9260-usart' lists_bind_fdt() - found match at 'serial_atmel': 'atmel,at91sam9260-dbgu' matches 'atmel,at91sam9260-usart' alloc_simple() size=18, ptr=80c, limit=8000: 220046d4 alloc_simple() size=50, ptr=85c, limit=8000: 220046ec alloc_simple() size=4, ptr=860, limit=8000: 2200473c lists_bind_fdt() bind node i2c@f8028000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-i2c' lists_bind_fdt() Skipping device pre-relocation lists_bind_fdt() bind node sfr@f8030000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-sfr' lists_bind_fdt() - found match at 'microchip_sfr': 'atmel,sama5d2-sfr' matches 'atmel,sama5d2-sfr' alloc_simple() size=18, ptr=878, limit=8000: 22004740 alloc_simple() size=50, ptr=8c8, limit=8000: 22004758 lists_bind_fdt() bind node interrupt-controller@fc020000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-aic' lists_bind_fdt() No match for node 'interrupt-controller@fc020000' lists_bind_fdt() bind node i2c@fc028000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-i2c' lists_bind_fdt() Skipping device pre-relocation lists_bind_fdt() bind node pinctrl@fc038000 lists_bind_fdt() - attempt to match compatible string 'atmel,sama5d2-pinctrl' lists_bind_fdt() - found match at 'pinctrl_atmel_pio4': 'atmel,sama5d2-pinctrl' matches 'atmel,sama5d2-pinctrl' alloc_simple() size=18, ptr=8e0, limit=8000: 220047a8 alloc_simple() size=50, ptr=930, limit=8000: 220047c0 alloc_simple() size=8, ptr=938, limit=8000: 22004810 alloc_simple() size=18, ptr=950, limit=8000: 22004818 alloc_simple() size=50, ptr=9a0, limit=8000: 22004830 alloc_simple() size=4, ptr=9a4, limit=8000: 22004880 lists_bind_fdt() bind node i2c0_default lists_bind_fdt() Device 'i2c0_default' has no compatible string lists_bind_fdt() bind node i2c1_default lists_bind_fdt() Device 'i2c1_default' has no compatible string lists_bind_fdt() bind node macb0_phy_irq lists_bind_fdt() Device 'macb0_phy_irq' has no compatible string lists_bind_fdt() bind node macb0_rmii lists_bind_fdt() Device 'macb0_rmii' has no compatible string lists_bind_fdt() bind node qspi1_sck_cs_default lists_bind_fdt() Device 'qspi1_sck_cs_default' has no compatible string lists_bind_fdt() bind node qspi1_dat_default lists_bind_fdt() Device 'qspi1_dat_default' has no compatible string lists_bind_fdt() bind node pinctrl lists_bind_fdt() Device 'pinctrl' has no compatible string alloc_simple() size=18, ptr=9bc, limit=8000: 22004884 alloc_simple() size=50, ptr=a0c, limit=8000: 2200489c alloc_simple() size=50, ptr=a5c, limit=8000: 220048ec lists_bind_fdt() bind node onewire lists_bind_fdt() - attempt to match compatible string 'w1-gpio' lists_bind_fdt() Skipping device pre-relocation lists_bind_fdt() bind node reserved-memory lists_bind_fdt() Device 'reserved-memory' has no compatible string lists_bind_fdt() bind node firmware lists_bind_fdt() Device 'firmware' has no compatible string lists_bind_fdt() bind node psci lists_bind_fdt() - attempt to match compatible string 'arm,psci-1.0' lists_bind_fdt() Skipping device pre-relocation lists_bind_fdt() bind node symbols lists_bind_fdt() Device 'symbols' has no compatible string lists_bind_fdt() bind node slow_rc_osc lists_bind_fdt() - attempt to match compatible string 'fixed-clock' lists_bind_fdt() - found match at 'fixed_clock': 'fixed-clock' matches 'fixed-clock' alloc_simple() size=18, ptr=a74, limit=8000: 2200493c alloc_simple() size=50, ptr=ac4, limit=8000: 22004954 alloc_simple() size=28, ptr=aec, limit=8000: 220049a4 lists_bind_fdt() bind node main_rc lists_bind_fdt() - attempt to match compatible string 'fixed-clock' lists_bind_fdt() - found match at 'fixed_clock': 'fixed-clock' matches 'fixed-clock' alloc_simple() size=50, ptr=b3c, limit=8000: 220049cc alloc_simple() size=28, ptr=b64, limit=8000: 22004a1c lists_bind_fdt() bind node slow_xtal lists_bind_fdt() - attempt to match compatible string 'fixed-clock' lists_bind_fdt() - found match at 'fixed_clock': 'fixed-clock' matches 'fixed-clock' alloc_simple() size=50, ptr=bb4, limit=8000: 22004a44 alloc_simple() size=28, ptr=bdc, limit=8000: 22004a94 lists_bind_fdt() bind node main_xtal lists_bind_fdt() - attempt to match compatible string 'fixed-clock' lists_bind_fdt() - found match at 'fixed_clock': 'fixed-clock' matches 'fixed-clock' alloc_simple() size=50, ptr=c2c, limit=8000: 22004abc alloc_simple() size=28, ptr=c54, limit=8000: 22004b0c lists_bind_fdt() bind node scmi0 lists_bind_fdt() - attempt to match compatible string 'arm,scmi-smc' lists_bind_fdt() - found match at 'scmi-over-smccc': 'arm,scmi-smc' matches 'arm,scmi-smc' alloc_simple() size=18, ptr=c6c, limit=8000: 22004b34 alloc_simple() size=50, ptr=cbc, limit=8000: 22004b4c alloc_simple() size=50, ptr=d0c, limit=8000: 22004b9c alloc_simple() size=8, ptr=d14, limit=8000: 22004bec alloc_simple() size=10, ptr=d24, limit=8000: 22004bf4 -uclass_find_device_by_seq() 0 -uclass_find_device_by_seq() - 0 'pinctrl@fc038000' -uclass_find_device_by_seq() - found -uclass_find_device_by_seq() 0 -uclass_find_device_by_seq() - 0 'pinctrl@fc038000' -uclass_find_device_by_seq() - found -uclass_find_device_by_seq() 0 -uclass_find_device_by_seq() - 0 'pinctrl@fc038000' -uclass_find_device_by_seq() - found class.c:300-pinctrl_select_state_simple() pinctrl_atmel_pio4 pinctrl@fc038000: set_state_simple op missing class.c:300-pinctrl_select_state_simple() simple_bus apb: set_state_simple op missing class.c:300-pinctrl_select_state_simple() simple_bus ahb: set_state_simple op missing class.c:88-pinctrl_select_state_full() serial_atmel serial@f8020000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19 -uclass_get_device_by_ofnode() Looking for scmi0_clock@14 -uclass_find_device_by_ofnode() Looking for scmi0_clock@14 -uclass_find_device_by_ofnode() - checking slow_rc_osc -uclass_find_device_by_ofnode() - checking main_rc -uclass_find_device_by_ofnode() - checking slow_xtal -uclass_find_device_by_ofnode() - checking main_xtal -uclass_find_device_by_ofnode() - checking scmi0_clock@14 -uclass_find_device_by_ofnode() - result for scmi0_clock@14: scmi0_clock@14 (ret=0) -uclass_get_device_by_ofnode() - result for scmi0_clock@14: scmi0_clock@14 (ret=0) alloc_simple() size=c, ptr=d30, limit=8000: 22004c04 -uclass_find_device_by_seq() 0 -uclass_find_device_by_seq() - 0 'pinctrl@fc038000' -uclass_find_device_by_seq() - found class.c:300-pinctrl_select_state_simple() scmi-over-smccc scmi0: set_state_simple op missing -uclass_find_device_by_seq() 0 -uclass_find_device_by_seq() - 0 'pinctrl@fc038000' -uclass_find_device_by_seq() - found †0þžþž?ÃÀÃÃ?À˜à˜ž<fÌ†žf?€óÌøfÀfÏfÏlect_state_simple() scmi_clk scmi0_clock@14: set_state_simple op missing x ðxÌx †‡0˜à†øÀ

Thanks in advance, Simone

Sep 20 '23 14:09 SimoneBongini

Hello Simone, After looking at the schematics for the shield96 I see that you have a 12MHz crystal oscillator. You need to go into the at91bootstrap menuconfig then inside the clock signals menu navigate to main crystal configuration then select crystal frequency and select 12MHz. Then make sure that the device tree in u-boot, sama5d27_som1.dtsi, the main_xtal frequency is set to 12MHz. This should match with your original dtsi file you had for linux that has the main xtal set at 12MHz.

See if this helps

Ryan

Sep 26 '23 21:09 ryan-wanner

Hello Ryan, thanks a lot for the feedback. Yes, shield96 have a 12MHz crystal oscillator. I have already set main_xtal to 12MHz. But the problem persists. Find attached:

at91bootstrap config (sama5d27_sd96sd_uboot_defconfig sama5d27_sd96sd_uboot_defconfig.zip )
u-boot-at91 defconfig and devicestrees u-boot.zip
at91-linux defconfig and devicetree linux.zip

I'm using. Find below the serial log I got: log.txt.txt

Sep 27 '23 13:09 SimoneBongini

Hello Simone, When I use your config files you gave me I do get the correct u-boot output. I think there is an issue with the UART initialization in either at91bootstrap or u-boot. I do recommend to visit this link HERE and make a free account. You will be able to get more timely responses and more focused help.

SDHC: fix in place for SAMA5D2 SoM VDDSDMMC over-consumption errata SD/MMC: Image: Read file u-boot.bin to 0x23f00000 MMC: ADMA supported SD: Card Capacity: High or Extended SD: Specification Version 3.0X SD/MMC: Done to load image

<debug_uart>

U-Boot 2023.01-dirty (Sep 29 2023 - 11:11:10 -0700)

CPU: SAMA5D27 1G bits DDR2 SDRAM Crystal frequency: 12 MHz CPU clock : 498 MHz Master clock : 166 MHz

DRAM: 128 MiB Core: 141 devices, 24 uclasses, devicetree: separate MMC: sdio-host@a0000000: 0, sdio-host@b0000000: 1 Loading Environment from FAT... MMC: no card present ** Bad device specification mmc 1 ** In: serial@f8020000 Out: serial@f8020000 Err: serial@f8020000 Net: eth0: ethernet@f8008000 Hit any key to stop autoboot: 0 => => => print arch=arm baudrate=115200 board=sama5d27_som1_ek board_name=sama5d27_som1_ek bootargs=console=ttyS0,115200 earlyprintk root=/dev/mmcblk1p2 rw rootwait bootcmd=fatload mmc 1 0x22000000 at91-sama5d27_som1_ek.dtb; fatload mmc 1 0x23000000 zImage; bootz 0x23000000 - 0x22000000 bootdelay=3 cpu=armv7 ethaddr=54:10:ec:a4:49:81 fdtcontroladdr=27b63ea0 loadaddr=0x22000000 soc=at91 stderr=serial@f8020000 stdin=serial@f8020000 stdout=serial@f8020000 vendor=atmel

Environment size: 456/4092 bytes =>

Best, Ryan

Oct 05 '23 21:10 ryan-wanner

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U-boot-at91 prints strange characters

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