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| author | Stephen Boyd <[email protected]> | 2018-03-23 16:34:52 +0000 |
|---|---|---|
| committer | Linus Walleij <[email protected]> | 2018-03-27 13:34:20 +0000 |
| commit | 726cb3ba49692bdae6caff457755e7cdb432efa4 (patch) | |
| tree | 66bf4de79b830df2556fa8854dcba1d414ebd9a4 /drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c | |
| parent | gpiolib: Change bitmap allocation to kmalloc_array (diff) | |
| download | kernel-726cb3ba49692bdae6caff457755e7cdb432efa4.tar.gz kernel-726cb3ba49692bdae6caff457755e7cdb432efa4.zip | |
gpiolib: Support 'gpio-reserved-ranges' property
Some qcom platforms make some GPIOs or pins unavailable for use by
non-secure operating systems, and thus reading or writing the registers
for those pins will cause access control issues. Add support for a DT
property to describe the set of GPIOs that are available for use so that
higher level OSes are able to know what pins to avoid reading/writing.
Non-DT platforms can add support by directly updating the
chip->valid_mask.
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c')
0 files changed, 0 insertions, 0 deletions