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Alyssa Rosenzweig
dcfd519256
MT8192 contains an experimental Accelerator Coherency Port implementation, which does not work correctly but was unintentionally enabled by default. For correct operation of the GPU, we must set a chicken bit disabling ACP on MT8192. Adapted from the following downstream change to the out-of-tree, legacy Mali GPU driver: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2781271/5 Note this change is required for both Panfrost and the legacy kernel driver. Co-developed-by: Robin Murphy <[email protected]> Signed-off-by: Robin Murphy <[email protected]> Signed-off-by: Alyssa Rosenzweig <[email protected]> Cc: Nick Fan <[email protected]> Cc: Nicolas Boichat <[email protected]> Cc: Chen-Yu Tsai <[email protected]> Cc: Stephen Boyd <[email protected]> Cc: AngeloGioacchino Del Regno <[email protected]> Tested-by: AngeloGioacchino Del Regno <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Matthias Brugger <[email protected]>