| Message ID | d9bfb11e3d66376792089d54d7d52fe3778efa33.1584636213.git.agx@sigxcpu.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: dts: imx8mq-librem5-devkit: Use 0.9V for VDD_GPU | expand |
On 19.03.20 17:46, Guido Günther wrote: > According to the imx8mq data sheet running VDD_GPU at 0.9V is enough > when not overclocking to 1GHz (which we currently don't do). > > Signed-off-by: Guido Günther <agx@sigxcpu.org> > --- > arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > index c47a26cf8e43..736b250bc9c2 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > @@ -318,7 +318,7 @@ > regulator-min-microvolt = <700000>; > regulator-max-microvolt = <1300000>; > regulator-always-on; > - rohm,dvs-run-voltage = <1000000>; > + rohm,dvs-run-voltage = <900000>; > }; > > buck4_reg: BUCK4 { > since I'm running this now: Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm> thanks
On Thu, Mar 19, 2020 at 05:46:02PM +0100, Guido Günther wrote: > According to the imx8mq data sheet running VDD_GPU at 0.9V is enough > when not overclocking to 1GHz (which we currently don't do). > > Signed-off-by: Guido Günther <agx@sigxcpu.org> It doesn't apply to my branch. Shawn > --- > arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > index c47a26cf8e43..736b250bc9c2 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > @@ -318,7 +318,7 @@ > regulator-min-microvolt = <700000>; > regulator-max-microvolt = <1300000>; > regulator-always-on; > - rohm,dvs-run-voltage = <1000000>; > + rohm,dvs-run-voltage = <900000>; > }; > > buck4_reg: BUCK4 { > -- > 2.23.0 >
Hi, On Mon, Apr 20, 2020 at 10:54:59PM +0800, Shawn Guo wrote: > On Thu, Mar 19, 2020 at 05:46:02PM +0100, Guido Günther wrote: > > According to the imx8mq data sheet running VDD_GPU at 0.9V is enough > > when not overclocking to 1GHz (which we currently don't do). > > > > Signed-off-by: Guido Günther <agx@sigxcpu.org> > > It doesn't apply to my branch. This was against linux next when i sent it, can you link to the branch it should apply to please? -- Guido > > Shawn > > > --- > > arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > > index c47a26cf8e43..736b250bc9c2 100644 > > --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > > @@ -318,7 +318,7 @@ > > regulator-min-microvolt = <700000>; > > regulator-max-microvolt = <1300000>; > > regulator-always-on; > > - rohm,dvs-run-voltage = <1000000>; > > + rohm,dvs-run-voltage = <900000>; > > }; > > > > buck4_reg: BUCK4 { > > -- > > 2.23.0 > > >
On Mon, Apr 20, 2020 at 06:32:24PM +0200, Guido Günther wrote: > Hi, > On Mon, Apr 20, 2020 at 10:54:59PM +0800, Shawn Guo wrote: > > On Thu, Mar 19, 2020 at 05:46:02PM +0100, Guido Günther wrote: > > > According to the imx8mq data sheet running VDD_GPU at 0.9V is enough > > > when not overclocking to 1GHz (which we currently don't do). > > > > > > Signed-off-by: Guido Günther <agx@sigxcpu.org> > > > > It doesn't apply to my branch. > > This was against linux next when i sent it, can you link to the branch > it should apply to please? Here it is: git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next Or even better: git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git imx/dt64 Shawn
Hi, On Tue, Apr 21, 2020 at 11:03:07AM +0800, Shawn Guo wrote: > On Mon, Apr 20, 2020 at 06:32:24PM +0200, Guido Günther wrote: > > Hi, > > On Mon, Apr 20, 2020 at 10:54:59PM +0800, Shawn Guo wrote: > > > On Thu, Mar 19, 2020 at 05:46:02PM +0100, Guido Günther wrote: > > > > According to the imx8mq data sheet running VDD_GPU at 0.9V is enough > > > > when not overclocking to 1GHz (which we currently don't do). > > > > > > > > Signed-off-by: Guido Günther <agx@sigxcpu.org> > > > > > > It doesn't apply to my branch. > > > > This was against linux next when i sent it, can you link to the branch > > it should apply to please? > > Here it is: > > git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next > > Or even better: > > git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git imx/dt64 Thanks - and sorry for getting confused with all the kernel trees around. v2 should apply to the above: https://lore.kernel.org/linux-arm-kernel/55399d6b297e329f125a71aea16e5f48c2857945.1587480093.git.agx@sigxcpu.org/T/#mfa29f121347a9d3d76bb14d58fc63fe39767db9c Cheers, -- Guido > > Shawn >
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts index c47a26cf8e43..736b250bc9c2 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts @@ -318,7 +318,7 @@ regulator-min-microvolt = <700000>; regulator-max-microvolt = <1300000>; regulator-always-on; - rohm,dvs-run-voltage = <1000000>; + rohm,dvs-run-voltage = <900000>; }; buck4_reg: BUCK4 {
According to the imx8mq data sheet running VDD_GPU at 0.9V is enough when not overclocking to 1GHz (which we currently don't do). Signed-off-by: Guido Günther <agx@sigxcpu.org> --- arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)