2020-05-06 04:28 AM
Hello,
I have a Yocto Project with st-stm32mp1 layer, using Poky distribution along with customized CubeMX machine that I created using st-stm32mp1-addons layers
I need to use the spi5 module, so I activated it through CubeMX for the "A7NS" runtime context.
I compiled and run the machine, but during boot I get this message:
[ 1.533147] spi_stm32 44009000.spi: clk rate = 0
[ 1.536942] spi_stm32: probe of 44009000.spi failed with error -22
I also tried with spi1 and got the same error message.
All my kernel variables are default ( SPI=y, SPI_MASTER=y, SPI_STM32=y, SPI_SPIDEV=y)
I also haven't touch any clock configuration in CubeMX, everything should be default.
I uploaded my boot log as attachment, you can find the error message at line 223. There are two messages because I tried with both spi1 and spi5.
I have also uploaded my machine configuration file, along with the cubeMX project
Any idea why this would happen ?
Thanks for your help,
Solved! Go to Solution.
2020-05-13 02:59 AM
I fixed this problem after removing a redefinition of RCC generated by CubeMX under tf-a dts file. There were 2 configurations of RCC defined: first one with spi clock configured as it should, and another at the end of the file under section "user code addons" in which the spi clock was disabled for a reason unknown
2020-05-06 07:52 AM
This is the STM32 MCU forum. The STM32 MPU forum is here:
https://community.st.com/stm32mpu
You'll probably have better luck asking there.
2020-05-06 09:09 AM
My post is not listed on a single forum but multiple ones according to the topics I have chosen below my post. Some topics may be sub topics of STM32 MCU this is why you saw it there, but it's also there in the MPU forums.
2020-05-06 09:28 AM
I had no idea the forum worked that way. Thanks for the explanation. Probably STM32CubeMX is a member of both.
2020-05-13 02:59 AM
I fixed this problem after removing a redefinition of RCC generated by CubeMX under tf-a dts file. There were 2 configurations of RCC defined: first one with spi clock configured as it should, and another at the end of the file under section "user code addons" in which the spi clock was disabled for a reason unknown
2021-03-04 07:25 AM
Hi. Do you mind writing what exactly have you done ? I have modified tf-a dts to enable in my case SPI45 clocks but it didn't help much and I still get clk rate = 0.
2023-03-14 09:38 PM
Hi,
I have the same error and I wasn't able to see a redifined RCC generated by CubeMX in my tf-a dts file. I 'm using the buildroot config: st_stm32mp157f_dk2_demo_defconfig provided by github buildroot-external-st repository (new member so can't add link)
After generating from CubeMX I added the following user code in my linux-dts and uboot-dts files:
&spi5{
pinctrl-names = "default", "sleep";
pinctrl-0 = <&spi5_pins_mx>;
pinctrl-1 = <&spi5_sleep_pins_mx>;
cs-gpios= <&gpiof 6 0>;
status = "okay";
/* USER CODE BEGIN spi5 */
spidev@0{
compatible = "linux,spidev";
reg = <0>;
spi-max-frequency = <4000000>;
};
/* USER CODE END spi5 */
};
I also ensured:
CLK_SPI2S23_PLL3Q
CLK_SPI45_PCLK2
are set in my tfa-dts file
I'm out of ideas for solving this and would appreciate if anyone could help me troubleshoot
2024-08-05 08:06 AM
@AMill.9 After 1.5 years, have you fond a solution ? I cannot get SPI2 to work. No /dev/spi device. Also had to add the clocks and protection in OP-TEE. but no luck.