| Message ID | 20191015065937.23169-1-mathieu.poirier@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [stable,4.19,1/4] ARM: dts: am4372: Set memory bandwidth limit for DISPC | expand |
On Tue, Oct 15, 2019 at 12:59:34AM -0600, Mathieu Poirier wrote: > From: Peter Ujfalusi <peter.ujfalusi@ti.com> > > commit f90ec6cdf674248dcad85bf9af6e064bf472b841 upstream > > Set memory bandwidth limit to filter out resolutions above 720p@60Hz to > avoid underflow errors due to the bandwidth needs of higher resolutions. > > am43xx can not provide enough bandwidth to DISPC to correctly handle > 'high' resolutions. > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> > Signed-off-by: Tony Lindgren <tony@atomide.com> > Cc: stable <stable@vger.kernel.org> # 4.19 > Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> > --- > arch/arm/boot/dts/am4372.dtsi | 2 ++ > 1 file changed, 2 insertions(+) What about 5.3? Is this ok there? thanks, greg k-h
On Wed, 16 Oct 2019 at 12:31, Greg KH <gregkh@linuxfoundation.org> wrote: > > On Tue, Oct 15, 2019 at 12:59:34AM -0600, Mathieu Poirier wrote: > > From: Peter Ujfalusi <peter.ujfalusi@ti.com> > > > > commit f90ec6cdf674248dcad85bf9af6e064bf472b841 upstream > > > > Set memory bandwidth limit to filter out resolutions above 720p@60Hz to > > avoid underflow errors due to the bandwidth needs of higher resolutions. > > > > am43xx can not provide enough bandwidth to DISPC to correctly handle > > 'high' resolutions. > > > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> > > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> > > Signed-off-by: Tony Lindgren <tony@atomide.com> > > Cc: stable <stable@vger.kernel.org> # 4.19 > > Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> > > --- > > arch/arm/boot/dts/am4372.dtsi | 2 ++ > > 1 file changed, 2 insertions(+) > > What about 5.3? Is this ok there? > Yes - all the patches in this series are also applicable (and apply) to 5.3.y Thanks, Mathieu > thanks, > > greg k-h
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi index d4b7c59eec68..cf1e4f747242 100644 --- a/arch/arm/boot/dts/am4372.dtsi +++ b/arch/arm/boot/dts/am4372.dtsi @@ -1142,6 +1142,8 @@ ti,hwmods = "dss_dispc"; clocks = <&disp_clk>; clock-names = "fck"; + + max-memory-bandwidth = <230000000>; }; rfbi: rfbi@4832a800 {