"stm32mp15-no-scmi.dtsi:103.1-5 Label or path dsi not found"

[AMurr.2282]

When building a distro for our custom board with a STM32MP153AAC, u-boot-stm32mp fails to build when UBOOT_CONFIG is set to "basic". We would like to do a ddr3 test, this is the reason for the config.

Here is the relevant section from conf/machine/stm32mp1-raichu-v2.conf file

###########################################################################
#
# User machine customization sections
#
###########################################################################
 
# Boot Scheme
# =========================================================================
BOOTSCHEME_LABELS += "trusted"
# WORKAROUND to generate U-BOOT SPL for DDR Tuning tools usage
UBOOT_CONFIG += "basic"

It seems that the dsi block is defined in arch/arm/dts/stm32mp157.dtsi, but we have a stm32mp153, and the device tree generated by CubeMX only includes stm32mp153.dtsi. So obviously, this isn't going to work:

https://github.com/STMicroelectronics/meta-st-stm32mp/blob/dunfell/recipes-bsp/u-boot/u-boot-stm32mp/0004-ARM-v2020.01-stm32mp-r1-DEVICETREE.patch#L443

[AMurr.2282]

Hi

I too don't see a patch. I see a 98.6MB tar file attached to your post. Would it be possible to post a diff (.patch file) instead?

Many thanks

[Olivier GALLIEN]

Hi @AMurr.2282​ ,

Sorry !

Don't know what's going on ..

the patch is very simple actually :

diff --git a/arch/arm/dts/stm32mp15-no-scmi.dtsi b/arch/arm/dts/stm32mp15-no-scmi.dtsi
 
index 4837b34..064fd56 100644
 
--- a/arch/arm/dts/stm32mp15-no-scmi.dtsi
 
+++ b/arch/arm/dts/stm32mp15-no-scmi.dtsi
 
@@ -61,6 +61,10 @@
 
 			clocks = <&rcc CRYP1>;
 
 			resets = <&rcc CRYP1_R>;
 
 		};
 
+
 
+		dsi: dsi@5a000000 {
 
+			clocks = <&rcc DSI_K>, <&clk_hse>, <&rcc DSI_PX>;
 
+		};
 
 	};
 
 
 
 	mlahb {
 
@@ -100,10 +104,6 @@
 
 	clocks = <&rcc DDRPERFM>, <&rcc PLL2_R>;
 
 };
 
 
 
-&dsi {
 
-	clocks = <&rcc DSI_K>, <&clk_hse>, <&rcc DSI_PX>;
 
-};
 
-
 
 &gpioz {
 
 	clocks = <&rcc GPIOZ>;
 
 };

Olivier

[AMurr.2282]

Thanks! I applied the patch and U-Boot SPL compiled successfully.

I tried to load bootloader/u-boot-spl.stm32 onto the target board using STM32CubeMX DDR Test Suite and now I am getting the following output on serial:

U-Boot SPL 2020.01-stm32mp-r1 (Nov 05 2020 - 11:15:33 +0000)
Model: STMicroelectronics custom STM32CubeMX board
RAM: DDR3-DDR3L 16bits 533000Khz
DDR invalid size : 0x0, expected 0x10000000
DRAM init failed: -22
### ERROR ### Please RESET the board ###

It looks like PMIC isn't enabling DDR3 VDD, VTT or VREF because I measure 0V.

Any idea how I can fix this?