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STdistro mickledore - u-boot-stm32mp fails - Device Tree Source not correctly specified

luaiza
Associate II

Hello,

I am facing the issue below when build up my image (or u-boot-stm32mp alone)
I mainly followed instructions in https://wiki.st.com/stm32mpu/wiki/How_to_compile_the_device_tree_with_the_Distribution_Package.
But it did not work.

make -f /home/luisa/dev/st/st_distro/stdistro/build-try-test1/tmp-glibc/work-shared/stm32mp151a-bitron-som/uboot-source/scripts/Makefile.build obj=arch/arm/dts dtbs
test -e arch/arm/dts/stm32mp151a-bitron-som-mx.dtb || ( \
echo >&2; \
echo >&2 "Device Tree Source (arch/arm/dts/stm32mp151a-bitron-som-mx.dtb) is not correctly specified."; \
echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
echo >&2; \
/bin/false)

My .dts file

stm32mp151a-bitron-som-mx.dts 
stm32mp151a-bitron-som-mx-u-boot.dtsi

are below my building path <builddir>/tmp-glibc/work-shared/stm32mp151a-bitron-som/uboot-source/arch/arm/dts and are as the ones below my mx/bitron_som_20634519_06/CA7/DeviceTree/bitron-som/u-boot directory. I noticed that folder arch/arm/dts holds only .dts and .dtsi files but no .dtb - so why it is expecting a dtb there?

In general, when using OpenSTLinux distribution, is Yocto sufficient to build dtb files?
When one needs to take steps listed in https://wiki.st.com/stm32mpu/wiki/How_to_configure_U-Boot_for_your_board ?

Attached my conf/machine/<machine>.conf file (extended extension to .txt for uploading)

This issue is just the same as 583813  and 53885  but I have found no answer there - so I would thank you for any help.

1 ACCEPTED SOLUTION

Accepted Solutions
luaiza
Associate II

I solved my issue, by #including missing .dtsi in my u-boot/xxx.dts and u-boot/xxx.dtsi files.  They way they are generated by the CubeMx is not sufficient. 
Beyond the above error,

When bitbaking u-boot-stm32mp individually, I got the following error related to scmi_clsk


 

 

/ahb/m4@10000000/m4_system_resources/can@4400e000: Reference to non-existent node or label "scmi_clk"​

 

 


I resolved that by #including stm32mp15-scmi.dtsi 

In general, I used stm32mp157c-ev1.dts and stm32mp157c-ev1-u-boot.dtsi (from u-boot repository) as guideline.  Providing to my files same #include directives present there, just searching for those matching my board stm32m151a.

In addition, to fix the errors below

 

| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_hse"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_hsi"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_csi"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_lse"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_lsi"

 

 I re-declared  clocks clk_hse, clk_hsi, clk_csi,... within the clocks node of my .dts file, which was empty

 

	clocks{
		/* USER CODE BEGIN clocks */
		clk_csi: clk-csi {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <4000000>;
		};

		clk_hse: clk-hse {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24000000>;
		};

		clk_hsi: clk-hsi {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <64000000>;
		};

		clk_lse: clk-lse {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <32768>;
		};

		clk_lsi: clk-lsi {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <32000>;
		};			
		/* USER CODE END clocks */	
	};

 

 

NOTICE:  those clocks are declared in stm32mp151.dti , which is also  #included in my .dts, but the fact that the clock node was initially empty in my .dts file, make me think that the result was not clocks declared at all.

View solution in original post

2 REPLIES 2
luaiza
Associate II

I solved my issue, by #including missing .dtsi in my u-boot/xxx.dts and u-boot/xxx.dtsi files.  They way they are generated by the CubeMx is not sufficient. 
Beyond the above error,

When bitbaking u-boot-stm32mp individually, I got the following error related to scmi_clsk


 

 

/ahb/m4@10000000/m4_system_resources/can@4400e000: Reference to non-existent node or label "scmi_clk"​

 

 


I resolved that by #including stm32mp15-scmi.dtsi 

In general, I used stm32mp157c-ev1.dts and stm32mp157c-ev1-u-boot.dtsi (from u-boot repository) as guideline.  Providing to my files same #include directives present there, just searching for those matching my board stm32m151a.

In addition, to fix the errors below

 

| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_hse"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_hsi"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_csi"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_lse"
| arch/arm/dts/stm32mp151a-ac_wmini_eu_mp151a-mx.dtb: ERROR (phandle_references): /soc/rcc@50000000: Reference to non-existent node or label "clk_lsi"

 

 I re-declared  clocks clk_hse, clk_hsi, clk_csi,... within the clocks node of my .dts file, which was empty

 

	clocks{
		/* USER CODE BEGIN clocks */
		clk_csi: clk-csi {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <4000000>;
		};

		clk_hse: clk-hse {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24000000>;
		};

		clk_hsi: clk-hsi {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <64000000>;
		};

		clk_lse: clk-lse {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <32768>;
		};

		clk_lsi: clk-lsi {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <32000>;
		};			
		/* USER CODE END clocks */	
	};

 

 

NOTICE:  those clocks are declared in stm32mp151.dti , which is also  #included in my .dts, but the fact that the clock node was initially empty in my .dts file, make me think that the result was not clocks declared at all.

debugging
Senior III

We walked into the same problems and solutions around the same time. 😁