linux-kernel - Re: [PATCH 1/4] ARM: dts: imx6sl: fix rng node

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Date:   Fri, 19 Jun 2020 18:44:32 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Horia Geantă <horia.geanta@....com>
Cc:     Rob Herring <robh+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Martin Kaiser <martin@...ser.cx>,
        Franck Lenormand <franck.lenormand@....com>,
        Iuliana Prodan <iuliana.prodan@....com>,
        Silvano Di Ninno <silvano.dininno@....com>,
        "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" 
        <linux-crypto@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] ARM: dts: imx6sl: fix rng node

Hi Horia,

On Fri, Jun 19, 2020 at 6:34 PM Horia Geantă <horia.geanta@....com> wrote:
>
> rng DT node was added without a compatible string.
>
> i.MX driver for RNGC (drivers/char/hw_random/imx-rngc.c) also claims
> support for RNGB, and is currently used for i.MX25.
>
> Let's used this driver also for RNGB block in i.MX6SL.

"Let's use"

>
> Fixes: e29fe21cff96 ("ARM: dts: add device tree source for imx6sl SoC")
> Signed-off-by: Horia Geantă <horia.geanta@....com>
> ---
>  arch/arm/boot/dts/imx6sl.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi
> index 911d8cf77f2c..1f0f250ee175 100644
> --- a/arch/arm/boot/dts/imx6sl.dtsi
> +++ b/arch/arm/boot/dts/imx6sl.dtsi
> @@ -939,8 +939,10 @@
>                         };
>
>                         rngb: rngb@...4000 {
> +                               compatible = "fsl,imx25-rngb";

Better to use:

 compatible = "fsl,imx6sl-rngb","fsl,imx25-rngb";

and document fsl,imx6sl-rngb