linux-kernel - Re: [PATCH 2/3] ARM: dts: vf610-colibri: Add PWM support

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Date:	Fri, 19 Sep 2014 15:49:09 +0530
From:	Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
To:	Shawn Guo <shawn.guo@...escale.com>
CC:	<stefan@...er.ch>, <linux@....linux.org.uk>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] ARM: dts: vf610-colibri: Add PWM support


On Thursday 18 September 2014 07:42 PM, Shawn Guo wrote:

> On Wed, Sep 17, 2014 at 01:46:29PM +0530, Bhuvanchandra DV wrote:
>>  The Colibri standard defines four pins as PWM outputs, two of them (PWM
>>  A and C) are routed to FTM instance 0 and the other two (PWM B and D)
>>  are routed to FTM instance 1. Hence enable both FTM instances for the
>>  Colibri module and mux the four pins accordingly.
>>
>> Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
>> ---
>>  arch/arm/boot/dts/vf610-colibri-eval-v3.dts |    8 ++++++++
>>  arch/arm/boot/dts/vf610-colibri.dtsi        |   25 +++++++++++++++++++++++++
>>  2 files changed, 33 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> index 7fb3066..ba98039 100644
>> --- a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> +++ b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> @@ -44,3 +44,11 @@
>>  &uart2 {
>>  	status = "okay";
>>  };
>> +
>> +&pwm0 {
>> +	status = "okay";
>> +};
>> +
>> +&pwm1 {
>> +	status = "okay";
>> +};
> Please sort the node alphabetically, so that we can locate them more
> easily.

Ok, will sort the nodes alphabetically 

>> diff --git a/arch/arm/boot/dts/vf610-colibri.dtsi b/arch/arm/boot/dts/vf610-colibri.dtsi
>> index 0cd8343..9bd1415 100644
>> --- a/arch/arm/boot/dts/vf610-colibri.dtsi
>> +++ b/arch/arm/boot/dts/vf610-colibri.dtsi
>> @@ -69,6 +69,16 @@
>>  	status = "okay";
>>  };
>>  
>> +&pwm0 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_pwm0>;
>> +};
>> +
>> +&pwm1 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_pwm1>;
>> +};
>> +
> Ditto

Ok

>>  &iomuxc {
>>  	vf610-colibri {
>>  		pinctrl_esdhc1: esdhc1grp {
>> @@ -119,5 +129,20 @@
>>  				VF610_PAD_PTD3__UART2_CTS		0x21a1
>>  			>;
>>  		};
>> +
>> +		pinctrl_pwm0: pwm0grp {
> We also maintain the alphabetic order of pinctrl_* entries under iomuxc
> node.
>
> Shawn

Ok

>> +			fsl,pins = <
>> +				VF610_PAD_PTB0__FTM0_CH0		0x1182
>> +				VF610_PAD_PTB1__FTM0_CH1		0x1182
>> +			>;
>> +		};
>> +
>> +		pinctrl_pwm1: pwm1grp {
>> +			fsl,pins = <
>> +				VF610_PAD_PTB8__FTM1_CH0		0x1182
>> +				VF610_PAD_PTB9__FTM1_CH1		0x1182
>> +			>;
>> +		};
>> +
>>  	};
>>  };
>> -- 
>> 1.7.9.5
>>

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