Re: [PATCH 2/2] ARM: dts: socfpga: Add a 3.3V fixed regulator node

[Dinh Nguyen <dinguyen-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>]

On 10/16/14, 8:43 PM, Jaehoon Chung wrote:
> Hi, Dinh.
> 
> On 10/17/2014 06:03 AM, dinguyen-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org wrote:
>> From: Dinh Nguyen <dinguyen-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
>>
>> Without the 3.3V regulator node, the SDMMC driver will give these warnings:
>>
>> dw_mmc ff704000.dwmmc0: No vmmc regulator found
>> dw_mmc ff704000.dwmmc0: No vqmmc regulator found
>>
>> This patch adds the regulator node, and points the SD/MMC to the regulator.
>>
>> Signed-off-by: Dinh Nguyen <dinguyen-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
>> ---
>>  arch/arm/boot/dts/socfpga_arria5.dtsi         | 11 ++++++++++-
>>  arch/arm/boot/dts/socfpga_arria5_socdk.dts    |  5 +++++
>>  arch/arm/boot/dts/socfpga_cyclone5.dtsi       |  9 +++++++++
>>  arch/arm/boot/dts/socfpga_cyclone5_socdk.dts  |  2 ++
>>  arch/arm/boot/dts/socfpga_cyclone5_sockit.dts |  5 +++++
>>  5 files changed, 31 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/boot/dts/socfpga_arria5.dtsi b/arch/arm/boot/dts/socfpga_arria5.dtsi
>> index 03e8268..8093781 100644
>> --- a/arch/arm/boot/dts/socfpga_arria5.dtsi
>> +++ b/arch/arm/boot/dts/socfpga_arria5.dtsi
>> @@ -29,7 +29,7 @@
>>  			};
>>  		};
>>  
>> -		dwmmc0@ff704000 {
>> +		mmc0: dwmmc0@ff704000 {
>>  			num-slots = <1>;
>>  			broken-cd;
>>  			bus-width = <4>;
>> @@ -41,4 +41,13 @@
>>  			cpu1-start-addr = <0xffd080c4>;
>>  		};
>>  	};
>> +
>> +	regulator_3_3v_hps: fixed_3_3v_hps_regulator@0 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "HPS 3.3V";
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +		regulator-boot-on;
>> +		regulator-always-on;
> 
> Always-on is right?

yes, it's always on.

> 
>> +	};
>>  };
>> diff --git a/arch/arm/boot/dts/socfpga_arria5_socdk.dts b/arch/arm/boot/dts/socfpga_arria5_socdk.dts
>> index 27d551c..b7e4023 100644
>> --- a/arch/arm/boot/dts/socfpga_arria5_socdk.dts
>> +++ b/arch/arm/boot/dts/socfpga_arria5_socdk.dts
>> @@ -68,6 +68,11 @@
>>  	};
>>  };
>>  
>> +&mmc0 {
>> +	vmmc-supply = <&regulator_3_3v_hps>;
>> +	vqmmc-supply = <&regulator_3_3v_hps>;
>> +};
>> +
>>  &usb1 {
>>  	status = "okay";
>>  };
>> diff --git a/arch/arm/boot/dts/socfpga_cyclone5.dtsi b/arch/arm/boot/dts/socfpga_cyclone5.dtsi
>> index 28c05e7..743bc3b 100644
>> --- a/arch/arm/boot/dts/socfpga_cyclone5.dtsi
>> +++ b/arch/arm/boot/dts/socfpga_cyclone5.dtsi
>> @@ -48,4 +48,13 @@
>>  			cpu1-start-addr = <0xffd080c4>;
>>  		};
>>  	};
>> +
>> +	regulator_3_3v_hps: fixed_3_3v_hps_regulator@0 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "HPS 3.3V";
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +		regulator-boot-on;
>> +		regulator-always-on;
>> +	};
>>  };
>> diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
>> index 739c3b7..e1f56ba 100644
>> --- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
>> +++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
>> @@ -70,6 +70,8 @@
>>  
>>  &mmc0 {
>>  	cd = <&gpio1 18 0>;
>> +	vmmc-supply = <&regulator_3_3v_hps>;
>> +	vqmmc-supply = <&regulator_3_3v_hps>;
> 
> Is vmmc and vqmmc  used the common supply?
> 

Yes..

Dinh
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