Dear all, this is the second version of the patches to add a PPU flop reset to drm/etnaviv. The first version of the series was send as an RFC to etna...@lists.freedesktop.org only.
This series adds running the PPU flop reset which is required for some hardware. This implementation was tested with the STM vendor kernel based on linux-6.6.48 that is provided with https://github.com/STMicroelectronics/oe-manifest/ Release: openstlinux-6.6-yocto-scarthgap-mpu-v25.04.30 The command stream is based on the stream that is emitted in the acccording code of the galcore kernel. Since I have only a stm32mp257f-ev1 board t test this for all parts that are emitted conditionally in the galcore kernel only the part that is required for this board is submitted here. Changes since v1 (RFC): - clean up some code according to comments by Lucas, - move the ppu flop reset data into drm_private as suggested by Lucas - initialize flop reset data only once if any GPU needs it, For this is was also required to move the identification of the hardware to etnaviv_gpu_bind, - move VIVS_ definitions out of etnaviv_flop_reset.c, - add a module parameter that makes it possible to force running the PPU flop reset. Thanks for any comments, Gert
