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| author | Shawn Guo <shawn.guo@linaro.org> | 2017-04-06 23:01:07 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2017-05-04 13:50:34 +0800 |
| commit | 893898f583f0ce4415e1b74399a14632c43a7bbe (patch) | |
| tree | 444d58da36ef304fec02d54a38f4762b22c3e959 /drivers/gpu | |
| parent | 4259037260d323fe967dbdb2270568de11576353 (diff) | |
| download | linux-stable-893898f583f0ce4415e1b74399a14632c43a7bbe.tar.gz linux-stable-893898f583f0ce4415e1b74399a14632c43a7bbe.tar.bz2 linux-stable-893898f583f0ce4415e1b74399a14632c43a7bbe.zip | |
drm: zte: do not enable clock auto-gating by default
Some VOU modules do not work well with clock auto-gating. For example,
VGA I2C bus will fail to read EDID data from monitor. Let's not enable
this feature by default, and leave it to the possible future low-power
optimization.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1491490870-6330-2-git-send-email-shawnguo@kernel.org
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/zte/zx_vou.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c index b500c8dd0d9d..5145215b4600 100644 --- a/drivers/gpu/drm/zte/zx_vou.c +++ b/drivers/gpu/drm/zte/zx_vou.c @@ -705,9 +705,6 @@ static void vou_hw_init(struct zx_vou_hw *vou) /* Release reset for all VOU modules */ zx_writel(vou->vouctl + VOU_SOFT_RST, ~0); - /* Enable clock auto-gating for all VOU modules */ - zx_writel(vou->vouctl + VOU_CLK_REQEN, ~0); - /* Enable all VOU module clocks */ zx_writel(vou->vouctl + VOU_CLK_EN, ~0); |