[PATCH v5 6/6] ARM: dts: DRA7: Add dt nodes for PWMSS

Franklin S Cooper Jr.
2016-03-17T15:53:57Z

On 03/17/2016 10:11 AM, Rob Herring wrote:
> On Mon, Mar 07, 2016 at 07:23:44PM -0600, Franklin S Cooper Jr wrote:
>> From: Vignesh R <vigneshr@ti.com>
>>
>> Add PWMSS device tree nodes for DRA7 SoC family and add documentation
>> for dt bindings.
>>
>> Signed-off-by: Vignesh R <vigneshr@ti.com>
>> [fcooper at ti.com: Add eCAP and use updated bindings for PWMSS and ePWM]
>> Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
>> ---
>> Version 5 changes:
>> Add DT node for eCAP and update eCAP binding documentation
>>
>> Version 4 changes:
>> Updated link to the latest documentation
>>
>> .../devicetree/bindings/pwm/pwm-tiecap.txt | 9 +++
>> .../devicetree/bindings/pwm/pwm-tiehrpwm.txt | 9 +++
>> .../devicetree/bindings/pwm/pwm-tipwmss.txt | 15 +++-
>> arch/arm/boot/dts/dra7.dtsi | 84 ++++++++++++++++++++++
>> 4 files changed, 116 insertions(+), 1 deletion(-)
>
>> + ehrpwm1: pwm at 48440200 {
>> + compatible = "ti,dra7xx-ehrpwm",
>> + "ti,am33xx-ehrpwm";
>> + #pwm-cells = <3>;
>> + reg = <0x48440200 0x80>;
>> + clocks = <&ehrpwm1_tbclk>;
>> + clock-names = "tbclk";
>> + status = "disabled";
>> + };
>> +
>> + ecap1: ecap at 48440100 {
> This also is a PWM? Then it should also be pwm at ...

The enhanced capture module primary purpose is to measure
time between external signals which is called capture mode.
It also has a PWM mode. So I wouldn't recommend generalizing
the entire node to pwm.
>
>> + compatible = "ti,dra7xx-ecap",
>> + "ti,am33xx-ecap";
>> + #pwm-cells = <3>;
>> + reg = <0x48440100 0x80>;
>> + status = "disabled";
>> + };
>> + };
>> +
>> + epwmss2: epwmss at 48442000 {
>> + compatible = "ti,dra7xx-pwmss", "ti,am33xx-pwmss";
>> + reg = <0x48442000 0x30>;
>> + ti,hwmods = "epwmss2";
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + status = "disabled";
>> + ranges;
>> +
>> + ehrpwm2: pwm at 48442200 {
>> + compatible = "ti,dra7xx-ehrpwm",
>> + "ti,am33xx-ehrpwm";
>> + #pwm-cells = <3>;
>> + reg = <0x48442200 0x80>;
>> + clocks = <&ehrpwm2_tbclk>;
>> + clock-names = "tbclk";
>> + status = "disabled";
>> + };
>> +
>> + ecap2: ecap at 48442100 {
> And here.
>
>> + compatible = "ti,dra7xx-ecap",
>> + "ti,am33xx-ecap";
>> + #pwm-cells = <3>;
>> + reg = <0x48442100 0x80>;
>> + status = "disabled";
>> + };
>> + };
>> };
>>
>> thermal_zones: thermal-zones {
>> --
>> 2.7.0
>>