linux-kernel - Re: [PATCH 3/3] ARM: dts: at91: sama5d2: use sama5d2 compatible string for SMC

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Message-ID: <20170711092556.mukp4umf4r4etqvt@dell>
Date:   Tue, 11 Jul 2017 10:25:56 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        alexandre.belloni@...e-electrons.com,
        boris.brezillon@...e-electrons.com, computersforpeace@...il.com
Subject: Re: [PATCH 3/3] ARM: dts: at91: sama5d2: use sama5d2 compatible
 string for SMC

On Tue, 11 Jul 2017, Ludovic Desroches wrote:

> On Tue, Jul 11, 2017 at 09:58:29AM +0200, Ludovic Desroches wrote:
> > On Tue, Jul 11, 2017 at 09:52:58AM +0200, Nicolas Ferre wrote:
> > > On 11/07/2017 at 09:40, Ludovic Desroches wrote:
> > > > A new compatible string has been introduced for sama5d2 SMC to allow to
> > > > manage the registers mapping change.
> > > > 
> > > > Signed-off-by: Ludovic Desroches <ludovic.desroches@...rochip.com>
> > > > ---
> > > >  arch/arm/boot/dts/sama5d2.dtsi | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > 
> > > > diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
> > > > index 4fcd5bb219e3..60e69aeacbdb 100644
> > > > --- a/arch/arm/boot/dts/sama5d2.dtsi
> > > > +++ b/arch/arm/boot/dts/sama5d2.dtsi
> > > > @@ -1048,7 +1048,7 @@
> > > >  			};
> > > >  
> > > >  			hsmc: hsmc@...14000 {
> > > > -				compatible = "atmel,sama5d3-smc", "syscon", "simple-mfd";
> > > > +				compatible = "atmel,sama5d2-smc", "syscon", "simple-mfd";
> > > 
> > > You'd better use something like:
> > >  compatible = "atmel,sama5d2-smc", "atmel,sama5d3-smc", "syscon", "simple-mfd";
> > 
> > But it's not true, during data interface setup, we will write values in
> > the wrong place if we fallback on "atmel,sama5d3-smc".
> > 
> > Regards
> > 
> > Ludovic
> > 
> > > 
> > > So that this patch is independent from the rest of the series and
> > > we can avoid to having to synchronize with mfd or mtd/nand for this part.
> 
> If Lee and Boris agree, maybe the series can go through AT91.

That's fine, but if the series goes though another tree, I will
require a pull-request.

I am also happy to carry though the MFD tree (and will of course send
out a PR to the other affected Maintainers).

> > > Regards,
> > > 
> > > >  				reg = <0xf8014000 0x1000>;
> > > >  				interrupts = <17 IRQ_TYPE_LEVEL_HIGH 6>;
> > > >  				clocks = <&hsmc_clk>;
> > > > 
> > > 
> > > 

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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