linux-kernel - Re: [PATCH 1/3] dt-bindings: fsl: scu: Add i.MX8QM rtc binding

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Date:   Mon, 3 Jan 2022 21:46:32 +0200
From:   Abel Vesa <abel.vesa@....com>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Rob Herring <robh@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-rtc@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: fsl: scu: Add i.MX8QM rtc binding

On 21-12-29 22:36:27, Alexandre Belloni wrote:
> On 21/12/2021 14:15:46+0200, Abel Vesa wrote:
> > Add i.MX8QM rtc compatible to the SCU bindings documentation.
> > 
> > Signed-off-by: Abel Vesa <abel.vesa@....com>
> > ---
> >  Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > index f1470d562156..4633be2182dd 100644
> > --- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > @@ -134,7 +134,9 @@ RTC bindings based on SCU Message Protocol
> >  ------------------------------------------------------------
> >  
> >  Required properties:
> > -- compatible: should be "fsl,imx8qxp-sc-rtc";
> > +- compatible:		Should be one of:
> > +			"fsl,imx8qm-sc-rtc",
> > +			"fsl,imx8qxp-sc-rtc".
> 
> Are the imx8qm and imx8qxp SCU actually different? I would hope you
> won't had a third messaging protocol for the RTC...
> 

Sorry, my bad.

No, there is no difference between imx8mq and imx8qxp.

I'll replace the compatible in the imx8qm.dtsi with fsl,imx8qxp-sc-rtc,
drop this patch and the one that adds the compatible to the rtc driver.

> 
> -- 
> Alexandre Belloni, co-owner and COO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com/