| Message ID | 1562148496-26789-4-git-send-email-fabrice.gasnier@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | STM32 ADC analog switches supply control | expand |
On Wed, 3 Jul 2019 12:08:16 +0200 Fabrice Gasnier <fabrice.gasnier@st.com> wrote: > On stm32mp157c, the ADC inputs are multiplexed with analog switches which > have reduced performances when their supply is below 2.7V (vdda by > default). > Add syscfg registers that can be used on stm32mp157c, to get full ADC > analog performances. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> I've applied the patches using this on the assumption this will go via the usual SoC route. Thanks, Jonathan > --- > arch/arm/boot/dts/stm32mp157c.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi > index 2dd5162..b9a5b58 100644 > --- a/arch/arm/boot/dts/stm32mp157c.dtsi > +++ b/arch/arm/boot/dts/stm32mp157c.dtsi > @@ -862,6 +862,7 @@ > clocks = <&rcc ADC12>, <&rcc ADC12_K>; > clock-names = "bus", "adc"; > interrupt-controller; > + st,syscfg = <&syscfg>; > #interrupt-cells = <1>; > #address-cells = <1>; > #size-cells = <0>;
On 7/14/19 6:13 PM, Jonathan Cameron wrote: > On Wed, 3 Jul 2019 12:08:16 +0200 > Fabrice Gasnier <fabrice.gasnier@st.com> wrote: > >> On stm32mp157c, the ADC inputs are multiplexed with analog switches which >> have reduced performances when their supply is below 2.7V (vdda by >> default). >> Add syscfg registers that can be used on stm32mp157c, to get full ADC >> analog performances. >> >> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> > I've applied the patches using this on the assumption this will go via > the usual SoC route. > > Thanks, Hi Jonathan, Many thanks, Fabrice > > Jonathan > >> --- >> arch/arm/boot/dts/stm32mp157c.dtsi | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi >> index 2dd5162..b9a5b58 100644 >> --- a/arch/arm/boot/dts/stm32mp157c.dtsi >> +++ b/arch/arm/boot/dts/stm32mp157c.dtsi >> @@ -862,6 +862,7 @@ >> clocks = <&rcc ADC12>, <&rcc ADC12_K>; >> clock-names = "bus", "adc"; >> interrupt-controller; >> + st,syscfg = <&syscfg>; >> #interrupt-cells = <1>; >> #address-cells = <1>; >> #size-cells = <0>; >
Hi fabrice On 7/3/19 12:08 PM, Fabrice Gasnier wrote: > On stm32mp157c, the ADC inputs are multiplexed with analog switches which > have reduced performances when their supply is below 2.7V (vdda by > default). > Add syscfg registers that can be used on stm32mp157c, to get full ADC > analog performances. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> > --- > arch/arm/boot/dts/stm32mp157c.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi > index 2dd5162..b9a5b58 100644 > --- a/arch/arm/boot/dts/stm32mp157c.dtsi > +++ b/arch/arm/boot/dts/stm32mp157c.dtsi > @@ -862,6 +862,7 @@ > clocks = <&rcc ADC12>, <&rcc ADC12_K>; > clock-names = "bus", "adc"; > interrupt-controller; > + st,syscfg = <&syscfg>; > #interrupt-cells = <1>; > #address-cells = <1>; > #size-cells = <0>; > Applied on stm32-next. Thanks. Alex
diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi index 2dd5162..b9a5b58 100644 --- a/arch/arm/boot/dts/stm32mp157c.dtsi +++ b/arch/arm/boot/dts/stm32mp157c.dtsi @@ -862,6 +862,7 @@ clocks = <&rcc ADC12>, <&rcc ADC12_K>; clock-names = "bus", "adc"; interrupt-controller; + st,syscfg = <&syscfg>; #interrupt-cells = <1>; #address-cells = <1>; #size-cells = <0>;
On stm32mp157c, the ADC inputs are multiplexed with analog switches which have reduced performances when their supply is below 2.7V (vdda by default). Add syscfg registers that can be used on stm32mp157c, to get full ADC analog performances. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> --- arch/arm/boot/dts/stm32mp157c.dtsi | 1 + 1 file changed, 1 insertion(+)