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Subject: Re: [PATCH V1 RESEND 2/3] bindings/perf/imx-ddr: update compatible
 string
To:     Joakim Zhang <qiangqing.zhang@nxp.com>, <will@kernel.org>,
        <mark.rutland@arm.com>, <robh+dt@kernel.org>, <shawnguo@kernel.org>
CC:     <linux-imx@nxp.com>, <linux-arm-kernel@lists.infradead.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
References: <20200512073115.14177-1-qiangqing.zhang@nxp.com>
 <20200512073115.14177-3-qiangqing.zhang@nxp.com>
From:   John Garry <john.garry@huawei.com>
Message-ID: <1f530ea9-c294-64ec-fd10-54129e0b4845@huawei.com>
Date:   Wed, 15 Jul 2020 12:03:34 +0100
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On 12/05/2020 08:31, Joakim Zhang wrote:
> Update compatible string according to driver change.`
> 
> Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
> ---
>   Documentation/devicetree/bindings/perf/fsl-imx-ddr.txt | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/perf/fsl-imx-ddr.txt b/Documentation/devicetree/bindings/perf/fsl-imx-ddr.txt
> index 7822a806ea0a..b27a1d4fec78 100644
> --- a/Documentation/devicetree/bindings/perf/fsl-imx-ddr.txt
> +++ b/Documentation/devicetree/bindings/perf/fsl-imx-ddr.txt
> @@ -4,7 +4,9 @@ Required properties:
>   

Hi Joakim,

>   - compatible: should be one of:
>   	"fsl,imx8-ddr-pmu"
> -	"fsl,imx8m-ddr-pmu"
> +	"fsl,imx8mq-ddr-pmu"
> +	"fsl,imx8mm-ddr-pmu"

I noticed that some of the compat strings being added are used in imx 
dtsi files today:

john@localhost:~/linux> git grep "fsl,imx8mm-ddr-pmu"
arch/arm64/boot/dts/freescale/imx8mm.dtsi:  compatible = 
"fsl,imx8mm-ddr-pmu", "fsl,imx8m-ddr-pmu";

Any specific reason why they are not described in the dt bindings already?

I don't follow dt so much anymore, so don't know the policies.

> +	"fsl,imx8mn-ddr-pmu"

Thanks,
John