| Message ID | 1490098556-23853-2-git-send-email-shawnguo@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | Add ZTE VGA driver support | expand |
On Tue, Mar 21, 2017 at 08:15:53PM +0800, Shawn Guo wrote: > From: Shawn Guo <shawn.guo@linaro.org> > > 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. > Reviewed-by: Sean Paul <seanpaul@chromium.org> > Signed-off-by: Shawn Guo <shawn.guo@linaro.org> > --- > drivers/gpu/drm/zte/zx_vou.c | 3 --- > 1 file changed, 3 deletions(-) > > diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c > index cf92d675feaa..2a2d90bd9425 100644 > --- a/drivers/gpu/drm/zte/zx_vou.c > +++ b/drivers/gpu/drm/zte/zx_vou.c > @@ -720,9 +720,6 @@ 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); > > -- > 1.9.1
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c index cf92d675feaa..2a2d90bd9425 100644 --- a/drivers/gpu/drm/zte/zx_vou.c +++ b/drivers/gpu/drm/zte/zx_vou.c @@ -720,9 +720,6 @@ 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);