linux-kernel - Re: [PATCH v5 6/6] ARM: dts: DRA7: Add dt nodes for PWMSS

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Date:	Mon, 11 Apr 2016 13:21:12 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	"Franklin S Cooper Jr." <fcooper@...com>
Cc:	Rob Herring <robh@...nel.org>, thierry.reding@...il.com,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	bcousson@...libre.com, linux@....linux.org.uk, paul@...an.com,
	linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, vigneshr@...com
Subject: Re: [PATCH v5 6/6] ARM: dts: DRA7: Add dt nodes for PWMSS

* Franklin S Cooper Jr. <fcooper@...com> [160317 08:55]:
> 
> 
> 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@...com>
> >>
> >> Add PWMSS device tree nodes for DRA7 SoC family and add documentation
> >> for dt bindings.
> >>
> >> Signed-off-by: Vignesh R <vigneshr@...com>
> >> [fcooper@...com: Add eCAP and use updated bindings for PWMSS and ePWM]
> >> Signed-off-by: Franklin S Cooper Jr <fcooper@...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@...40200 {
> >> +				compatible = "ti,dra7xx-ehrpwm",
> >> +					     "ti,am33xx-ehrpwm";
> >> +				#pwm-cells = <3>;
> >> +				reg = <0x48440200 0x80>;
> >> +				clocks = <&ehrpwm1_tbclk>;
> >> +				clock-names = "tbclk";
> >> +				status = "disabled";
> >> +			};
> >> +
> >> +			ecap1: ecap@...40100 {
> > This also is a PWM? Then it should also be pwm@...
> 
> 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.

So is this patch safe for me to apply now or do we need more
changes?

Regards,

Tony