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| author | Jyri Sarha <jsarha@ti.com> | 2017-10-12 12:19:46 +0300 |
|---|---|---|
| committer | Jyri Sarha <jsarha@ti.com> | 2017-10-13 15:24:21 +0300 |
| commit | ce99f7206c9105851d97202ed08c058af6f11ac4 (patch) | |
| tree | 61d725de2ecd5fc218deefc92d6ff510e049924b /drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | |
| parent | ba3fd954f0b4c2df1e0d7e243cb6735c6f4c5bdc (diff) | |
drm/tilcdc: Precalculate total frametime in tilcdc_crtc_set_mode()
We need the total frame refresh time to check if we are too close to
vertical sync when updating the two framebuffer DMA registers and risk
a collision. This new method is more accurate that the previous that
based on mode's vrefresh value, which itself is inaccurate or may not
even be initialized.
Reported-by: Kevin Hao <kexin.hao@windriver.com>
Fixes: 11abbc9f39e0 ("drm/tilcdc: Set framebuffer DMA address to HW only if CRTC is enabled")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c')
0 files changed, 0 insertions, 0 deletions