On 26/03/2023 19:51, Shane Francis wrote: >> Bootloader also does not use mainline DTS, so where is exactly the problem? > > In this case uboot does load the target DTB, and it seems a common > function in rockchips > downstream boot process, see : > > https://github.com/rockchip-linux/u-boot/blob/ef1dd650042f61915c4859ecc94623a09a3529fa/arch/arm/mach-rockchip/kernel_dtb.c#L70 > U-Boot comes with its own DTB, so what does it means "loads the target DTB"? From where? The one appended to the kernel zImage? No, it cannot... Any component which operates on mainline DTB must conform to the bindings (with respect to the ABI), thus your arguments here mean you are not allowed to change ABI in the future. Never. This change, assuming original binding was broken, could be warranted. Best regards, Krzysztof
