Re: [PATCH v2 1/2] ARM: dts: vf610-colibri: Add PWM support

From: Bhuvanchandra DV
Date: Mon Sep 22 2014 - 00:39:09 EST



On Friday 19 September 2014 09:30 PM, Stefan Agner wrote:

> Am 2014-09-19 15:38, schrieb Bhuvanchandra DV:
>> 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@xxxxxxxxxxx>
>> ---
>> arch/arm/boot/dts/vf610-colibri-eval-v3.dts | 8 +++++++
>> arch/arm/boot/dts/vf610-colibri.dtsi | 31 +++++++++++++++++++++++----
>> 2 files changed, 35 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> index 7fb3066..00f63d9 100644
>> --- a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> +++ b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> @@ -33,6 +33,14 @@
>> status = "okay";
>> };
>>
>> +&pwm0 {
>> + status = "okay";
>> +};
>> +
>> +&pwm1 {
>> + status = "okay";
>> +};
>> +
>> &uart0 {
>> status = "okay";
>> };
>> diff --git a/arch/arm/boot/dts/vf610-colibri.dtsi
>> b/arch/arm/boot/dts/vf610-colibri.dtsi
>> index 0cd8343..560cd69 100644
>> --- a/arch/arm/boot/dts/vf610-colibri.dtsi
>> +++ b/arch/arm/boot/dts/vf610-colibri.dtsi
>> @@ -13,10 +13,6 @@
>> model = "Toradex Colibri VF61 COM";
>> compatible = "toradex,vf610-colibri_vf61", "fsl,vf610";
>>
>> - memory {
>> - reg = <0x80000000 0x10000000>;
>> - };
>> -
>> clocks {
>> enet_ext {
>> compatible = "fixed-clock";
>> @@ -25,6 +21,9 @@
>> };
>> };
>>
>> + memory {
>> + reg = <0x80000000 0x10000000>;
>> + };
> Memory is a bit an exception here: In almost all device tree this is the
> first node after model/compatible. Also, it's generally not allowed to
> make changes outside of the topic (PWM in this case)... Hence I would
> drop this change.
>
> The rest
> Acked-By: Stefan Agner <stefan@xxxxxxxx>

OK. Will drop the change.

>> };
>>
>> &esdhc1 {
>> @@ -44,6 +43,16 @@
>> arm,tag-latency = <3 2 3>;
>> };
>>
>> +&pwm0 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_pwm0>;
>> +};
>> +
>> +&pwm1 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_pwm1>;
>> +};
>> +
>> &uart0 {
>> pinctrl-names = "default";
>> pinctrl-0 = <&pinctrl_uart0>;
>> @@ -97,6 +106,20 @@
>> >;
>> };
>>
>> + pinctrl_pwm0: pwm0grp {
>> + 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
>> + >;
>> + };
>> +
>> pinctrl_uart0: uart0grp {
>> fsl,pins = <
>> VF610_PAD_PTB10__UART0_TX 0x21a2

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