On 4/9/25 5:44 PM, Dmitry Baryshkov wrote: > On 09/04/2025 17:47, Konrad Dybcio wrote: >> SMEM allows the OS to retrieve information about the DDR memory. >> Among that information, is a semi-magic value called 'HBB', or Highest >> Bank address Bit, which multimedia drivers (for hardware like Adreno >> and MDSS) must retrieve in order to program the IP blocks correctly. >> >> This series introduces an API to retrieve that value, uses it in the >> aforementioned programming sequences and exposes available DDR >> frequencies in debugfs (to e.g. pass to aoss_qmp debugfs). More >> information can be exposed in the future, as needed. > > I know that for some platforms HBB differs between GPU and DPU (as it's being > programmed currently). Is there a way to check, which values are we going to > program: > > - SM6115, SM6350, SM6375 (13 vs 14) > - SC8180X (15 vs 16) > - QCM2290 (14 vs 15)
I believe the easiest way is to give them a smoke test. In any case, unless something is really wrong, any changes made by this patchset are supposed to be corrections Konrad
