2019-07-03 10:10:30

by Fabrice Gasnier

Subject: [PATCH v2 3/3] ARM: dts: stm32: add syscfg to ADC on stm32mp157c

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 <[email protected]>
---
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>;
--
2.7.4

2019-07-14 16:14:10

by Jonathan Cameron

Subject: Re: [PATCH v2 3/3] ARM: dts: stm32: add syscfg to ADC on stm32mp157c

On Wed, 3 Jul 2019 12:08:16 +0200
Fabrice Gasnier <[email protected]> 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 <[email protected]>
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>;

2019-07-15 07:03:09

by Fabrice Gasnier

Subject: Re: [PATCH v2 3/3] ARM: dts: stm32: add syscfg to ADC on stm32mp157c

On 7/14/19 6:13 PM, Jonathan Cameron wrote:
> On Wed, 3 Jul 2019 12:08:16 +0200
> Fabrice Gasnier <[email protected]> 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 <[email protected]>
> 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>;
>

2019-07-29 07:24:51

by Alexandre Torgue

Subject: Re: [PATCH v2 3/3] ARM: dts: stm32: add syscfg to ADC on stm32mp157c

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 <[email protected]>
> ---
> 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