Hi Geert, On Thursday, July 12, 2018, Geert Uytterhoeven wrote: > As the IP cores are the same in all variants, using > "renesas,r7s9210-<something>" should be fine for matching drivers to IP > cores. Same for CONFIG_ARCH_R7S9210. > > However, as the actual dies differ between H, M, and L versions, there may > be integration issues to be worked around. So I think it would be wise to > use one more digit in the compatible value at the main SoC level, i.e. > "renesas,r7s92104". > Unless there's a hardware register to detect the version at runtime. > But it seems RZ/A2 doesn't have a Product Register > (PRR), which most other SH/R-Mobile and R-Car SoCs do have? There is supposed to be one. I specifically asked for it (and remember reviewing it). But, now I'm not seeing it in the latest version of the manual. Let me find out where it is. Chris
