| Message ID | b5ed4626a553acb5e3107c6c96e82b674439128f.1547453586.git.ryder.lee@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/5] pwm: mediatek: add a property "mediatek,num-pwms" | expand |
Hello, On Mon, Jan 14, 2019 at 04:21:22PM +0800, Ryder Lee wrote: > This adds a property "mediatek,num-pwms" for PWM controller. > > Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> > --- > arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi > index 8fc4aa7..ab016cf 100644 > --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi > +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi > @@ -436,6 +436,7 @@ > <&pericfg CLK_PERI_PWM6_PD>; > clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4", > "pwm5", "pwm6"; > + mediatek,num-pwms = <6>; > status = "disabled"; Conceptually this patch must go in before the change to the driver. Otherwise the pwms are not usable with only patch 1 applied which breaks bisectability. Best regards Uwe
On 15/01/2019 21:02, Uwe Kleine-König wrote: > Hello, > > On Mon, Jan 14, 2019 at 04:21:22PM +0800, Ryder Lee wrote: >> This adds a property "mediatek,num-pwms" for PWM controller. >> >> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> >> --- >> arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi >> index 8fc4aa7..ab016cf 100644 >> --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi >> +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi >> @@ -436,6 +436,7 @@ >> <&pericfg CLK_PERI_PWM6_PD>; >> clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4", >> "pwm5", "pwm6"; >> + mediatek,num-pwms = <6>; >> status = "disabled"; > > Conceptually this patch must go in before the change to the driver. > Otherwise the pwms are not usable with only patch 1 applied which breaks > bisectability. > The driver should have backwards compatibility to older DTs. So that would need to be fixed in the driver not in the patch order of the series. Regards, Matthias
Hello, On Thu, Jan 17, 2019 at 02:00:43PM +0100, Matthias Brugger wrote: > On 15/01/2019 21:02, Uwe Kleine-König wrote: > > On Mon, Jan 14, 2019 at 04:21:22PM +0800, Ryder Lee wrote: > >> diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi > >> index 8fc4aa7..ab016cf 100644 > >> --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi > >> +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi > >> @@ -436,6 +436,7 @@ > >> <&pericfg CLK_PERI_PWM6_PD>; > >> clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4", > >> "pwm5", "pwm6"; > >> + mediatek,num-pwms = <6>; > >> status = "disabled"; > > > > Conceptually this patch must go in before the change to the driver. > > Otherwise the pwms are not usable with only patch 1 applied which breaks > > bisectability. > > > > The driver should have backwards compatibility to older DTs. So that would need > to be fixed in the driver not in the patch order of the series. Right you are. Bisectability is a reason to not apply the patches in the order as is, but given that you already requested backwards compatibility the bisectability will be fixed en passant. Best regards Uwe
diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi index 8fc4aa7..ab016cf 100644 --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi @@ -436,6 +436,7 @@ <&pericfg CLK_PERI_PWM6_PD>; clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4", "pwm5", "pwm6"; + mediatek,num-pwms = <6>; status = "disabled"; };
This adds a property "mediatek,num-pwms" for PWM controller. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> --- arch/arm64/boot/dts/mediatek/mt7622.dtsi | 1 + 1 file changed, 1 insertion(+)