linux-kernel - Re: [PATCH v5 01/10] spi: mtk-snfi: Change default page format to setup default setting

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Message-ID: <9dc8560088529c8599406a2d7c6f1f2c8e771c47.camel@mediatek.com>
Date:   Thu, 5 Jan 2023 11:42:18 +0000
From:   Xiangsheng Hou (侯祥胜) 
        <Xiangsheng.Hou@...iatek.com>
To:     "miquel.raynal@...tlin.com" <miquel.raynal@...tlin.com>,
        "mbrugger@...e.com" <mbrugger@...e.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "gch981213@...il.com" <gch981213@...il.com>,
        "vigneshr@...com" <vigneshr@...com>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        "richard@....at" <richard@....at>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Benliang Zhao (赵本亮) 
        <Benliang.Zhao@...iatek.com>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Bin Zhang (章斌) <bin.zhang@...iatek.com>
Subject: Re: [PATCH v5 01/10] spi: mtk-snfi: Change default page format to
 setup default setting

On Tue, 2022-12-20 at 10:15 +0800, xiangsheng.hou wrote:
Hi Matthias, Angelo
> 
> On Mon, 2022-12-19 at 16:30 +0100, Matthias Brugger wrote:
> > Thanks for your patch! There is something to improve please see
> > below.
> > 
> > On 19/12/2022 03:40, Xiangsheng Hou wrote:
> > > Change default page format to setup default setting since the
> > > sector
> > > size 1024 on MT7986 will lead to probe fail.
> > > 
> > > Signed-off-by: Xiangsheng Hou <xiangsheng.hou@...iatek.com>
> > > ---
> > >   drivers/spi/spi-mtk-snfi.c | 3 +--
> > >   1 file changed, 1 insertion(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/spi/spi-mtk-snfi.c b/drivers/spi/spi-mtk-
> > > snfi.c
> > > index fa8412ba20e2..719fc6f53ab1 100644
> > > --- a/drivers/spi/spi-mtk-snfi.c
> > > +++ b/drivers/spi/spi-mtk-snfi.c
> > > @@ -1430,8 +1430,7 @@ static int mtk_snand_probe(struct
> > > platform_device *pdev)
> > >   
> > >   	// setup an initial page format for ops matching
> > > page_cache_op
> > > template
> > >   	// before ECC is called.
> > > -	ret = mtk_snand_setup_pagefmt(ms, ms->caps->sector_size,
> > > -				      ms->caps->spare_sizes[0]);
> > > +	ret = mtk_snand_setup_pagefmt(ms, SZ_2K, SZ_64);
> > 
> > Couldn't you just set sector_size in mt7986_snand_caps?
> 
> The function mtk_snand_setup_pagefmt need use page and OOB size of
> NAND
> device to setup pagefmt.
> The controller page size can support 512/1k/2k/4k..., the sector size
> 1k have been set in mt7986_snand_caps. However this will also lead to
> fail in this function since the 1k page size will not be supported.
> Just use page size 2k and OOB size 64 as default parameter since this
> can be supported by all ICs with this controller.

Could you please help to review this patch.

Best Regards,
Xiangsheng Hou