Hi everybody,
I'm having some troubles with my renegade board: I flashed the bullseye image with mainline kernel (5.10) in an sdcard, put it in my roc-rk3328-cc board (4GB) and tried to boot. U-boot starts without problems, the kernel and dtb gets loaded from the /boot partition on the sdcard, the system starts to boot but when it comes to look for the root filesystem (by uuid), it cannot be found. A little digging in the problem showed that the sdcard is not recognized by the kernel (in fact writing the same image in a USB key works, because the filesystem is found by uuid in it), and dmesg shows a problem with the sdmmc-regulator:
reg-fixed-voltage sdmmc-regulator: Failed to register regulator: -517
This error is repeated various time (around 20) and then stops. The following is the output of # cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-31, parent: platform/pinctrl, gpio0:
gpiochip1: GPIOs 32-63, parent: platform/pinctrl, gpio1:
gpio-50 ( |snps,reset ) out hi ACTIVE LOW
gpio-58 ( |vcc-host1-5v-regulat) out hi
gpiochip2: GPIOs 64-95, parent: platform/pinctrl, gpio2:
gpio-66 ( |ir-receiver ) in hi ACTIVE LOW
gpiochip3: GPIOs 96-127, parent: platform/pinctrl, gpio3:
gpiochip4: GPIOs 511-511, parent: platform/ff100000.syscon:grf-gpio, ff100000.syscon:grf-gpio:
gpio-511 ( |vccio_sd ) out hi
An the following is the output of cat /sys/kernel/debug/regulator/regulator_summary
regulator use open bypass opmode voltage current min max
---------------------------------------------------------------------------------------
regulator-dummy 3 2 0 unknown 0mV 0mA 0mV 0mV
ff580000.usb-vusb_a 1 0mA 0mV 0mV
ff580000.usb-vusb_d 1 0mA 0mV 0mV
vcc_sys 1 1 0 unknown 5000mV 0mA 5000mV 5000mV
vcc_host1_5v 1 0 0 unknown 5000mV 0mA 0mV 0mV
vcc_phy 2 1 0 unknown 0mV 0mA 0mV 0mV
ff540000.ethernet-phy 1 0mA 0mV 0mV
vccio_sd 1 0 0 unknown 1800mV 0mA 1800mV 3300mV
In both cases, vcc_sd doesn't show up, which lets me think that the regulator doesn' register.
As far as I understand this is the regulator to power the sdcard, but I don't understand why it doesn't register. With various other OSes the sdcard works fine, so I would exclude an hardware problem.
Since I am able to boot from USB I can provide any output required (dmesg, decompiled dtb, etc).
Thanks for your help!
PS: reading various forums, I have the doubt that two boards exists, firefly and libre computer. I think mine is the libre computer one, but I didn't find a way to be 100% sure... I have this doubt because the product page states that the power LED is blue, while mine is red.
