linux-kernel - Re: [PATCH] ARM: dts: lan966x: Add otp support

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Message-ID: <20221125100144.332tizam7tonqqtz@soft-dev3-1>
Date:   Fri, 25 Nov 2022 11:01:44 +0100
From:   Horatiu Vultur - M31836 <Horatiu.Vultur@...rochip.com>
To:     Claudiu Beznea - M18063 <Claudiu.Beznea@...rochip.com>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        Nicolas Ferre - M43238 <Nicolas.Ferre@...rochip.com>,
        UNGLinuxDriver <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH] ARM: dts: lan966x: Add otp support

The 11/25/2022 09:23, Claudiu Beznea - M18063 wrote:
> Hi, Horatiu,

Hi Claudiu,

> 
> On 16.09.2022 22:49, Horatiu Vultur wrote:
> > Add OTP (one time programmable) support.
> > The both lan966x SocS (lan9662 and lan9668) have the same OTP IP.
> 
> If OTP IP is the same for both lan966x is there a reason you've added
> compatibles for each SoC variants?

When I was adding the device tree binding, Krzystof mention not to have
any wilcards in compatible string [0].

[0] https://lore.kernel.org/lkml/550e652e-4541-c1e6-33a7-d5555f0cb266@linaro.org/

> 
> Thank you,
> Claudiu Beznea
> 
> > 
> > Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
> > ---
> >  arch/arm/boot/dts/lan966x.dtsi | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/lan966x.dtsi b/arch/arm/boot/dts/lan966x.dtsi
> > index 23665a0429906..784caba369485 100644
> > --- a/arch/arm/boot/dts/lan966x.dtsi
> > +++ b/arch/arm/boot/dts/lan966x.dtsi
> > @@ -163,6 +163,11 @@ port7: port@7 {
> >  			};
> >  		};
> >  
> > +		otp: otp@...21000 {
> > +			compatible = "microchip,lan9668-otpc", "microchip,lan9662-otpc";
> > +			reg = <0xe0021000 0x300>;
> > +		};
> > +
> >  		flx0: flexcom@...40000 {
> >  			compatible = "atmel,sama5d2-flexcom";
> >  			reg = <0xe0040000 0x100>;
> 

-- 
/Horatiu