linux-kernel - Re: [PATCH] dt-bindings: mtd: add new compatible strings for mtk nor controller

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Date:   Thu, 3 Aug 2017 10:16:42 +0800
From:   Guochun Mao <guochun.mao@...iatek.com>
To:     Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>
CC:     Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        "Cyrille Pitchen" <cyrille.pitchen@...el.com>,
        Mark Rutland <mark.rutland@....com>,
        <devicetree@...r.kernel.org>, Richard Weinberger <richard@....at>,
        "Russell King" <linux@...linux.org.uk>,
        <linux-kernel@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        <linux-mtd@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        David Woodhouse <dwmw2@...radead.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] dt-bindings: mtd: add new compatible strings for mtk
 nor controller

Hi Cyrille,

On Wed, 2017-08-02 at 17:31 +0200, Cyrille Pitchen wrote:
> Hi Guochun,
> 
> Le 02/08/2017 à 10:36, Boris Brezillon a écrit :
> > Hi Matthias,
> > 
> > On Tue, 1 Aug 2017 14:33:22 +0200
> > Matthias Brugger <matthias.bgg@...il.com> wrote:
> > 
> >> On 07/25/2017 04:10 AM, Guochun Mao wrote:
> >>> Add "mediatek,mt2712-nor" and "mediatek,mt7622-nor"
> >>> for nor flash node's compatible strings.
> >>>
> >>> Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
> >>> Signed-off-by: Guochun Mao <guochun.mao@...iatek.com>
> >>> ---
> >>>   .../devicetree/bindings/mtd/mtk-quadspi.txt        |    2 ++
> >>>   1 file changed, 2 insertions(+)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> >>> index 5ded66a..9845ff4 100644
> >>> --- a/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> >>> +++ b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> >>> @@ -3,6 +3,8 @@
> >>>   Required properties:
> >>>   - compatible: 	  The possible values are:
> >>>   		  "mediatek,mt2701-nor"
> >>> +		  "mediatek,mt2712-nor"
> >>> +		  "mediatek,mt7622-nor"
> >>>   		  "mediatek,mt7623-nor"
> >>>   		  "mediatek,mt8173-nor"
> >>>   		  For mt8173, compatible should be "mediatek,mt8173-nor".
> >>>
> 
> There should be another patch to update the mtk_nor_of_ids[] array in
> the mtk-quadspi.c driver, shouldn't it?
> 
> Currently, I only see the "mediatek,mt8173-nor" compatible string at the
> driver side. The driver and its documentation should be aligned and both
> patches should be applied at the same time.

> Best regards,
> 
> Cyrille


>From my designer's info, these IPs' nor controller could use same
driver, and I had verified it. I think there's no need to update
mtk_nor_of_ids[], unless we find difference between these IPs(exactly
compared with mt8173).
How do you think?

And, we will add dts patches for new SOCs, are these patches should
applied with this documentation?

Best regards,
Guochun