linux/drivers/gpu
Konrad Dybcio 2d70a9002e drm/msm/a6xx: Fix unknown speedbin case
[ Upstream commit 75cb60d4f5 ]

When opp-supported-hw is present under an OPP node, but no form of
opp_set_supported_hw() has been called, that OPP is ignored by the API
and marked as unsupported.

Before Commit c928a05e44 ("drm/msm/adreno: Move speedbin mapping to
device table"), an unknown speedbin would result in marking all OPPs
as available, but it's better to avoid potentially overclocking the
silicon - the GMU will simply refuse to power up the chip.

Currently, the Adreno speedbin code does just that (AND returns an
invalid error, (int)UINT_MAX). Fix that by defaulting to speedbin 0
(which is conveniently always bound to fuseval == 0).

Fixes: c928a05e44 ("drm/msm/adreno: Move speedbin mapping to device table")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/559604/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:11 +01:00
..
drm drm/msm/a6xx: Fix unknown speedbin case 2023-11-20 11:59:11 +01:00
host1x gpu: host1x: Return error when context device not attached to IOMMU 2023-07-27 18:41:59 +02:00
ipu-v3 drm for 6.6-rc1 2023-08-30 13:34:34 -07:00
trace
vga
Makefile