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author | Adam Ford <aford173@gmail.com> | 2023-11-27 22:54:15 -0600 |
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committer | Shawn Guo <shawnguo@kernel.org> | 2023-12-06 10:16:33 +0800 |
commit | a0deedcc0cf0631c7856c16109ee6f08845956c0 (patch) | |
tree | 29c82f0f08a6426b7a8e450b716856257a755307 /Documentation/trace/histogram-design.rst | |
parent | 5b28b39dda772e7acc52f02c907aa5497c93e280 (diff) |
arm64: dts: imx8mm: Slow default video_pll1 clock rate
Since commit 8208181fe536 ("clk: imx: composite-8m:
Add imx8m_divider_determine_rate") the lcdif controller has
had the ability to set the lcdif_pixel rate which propagates
up the tree and sets the video_pll1 rate automatically.
By setting this value low, it will force the recalculation of
video_pll1 to the lowest rate needed by lcdif instead of
dividing a larger clock down to the desired clock speed. This
has the advantage of being able to lower the video_pll1 rate
from 594MHz to 148.5MHz when operating at 1080p. It can go even
lower when operating at lower resolutions and refresh rates.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de> # Kontron BL i.MX8MM
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'Documentation/trace/histogram-design.rst')
0 files changed, 0 insertions, 0 deletions