linux-kernel - Re: [PATCH] mtd: spi-nor: Fix the number of bytes for the dummy cycles

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Message-ID: <4841b48c-c35c-a375-8e78-154bc5217930@collabora.com>
Date:   Wed, 2 Nov 2022 13:21:51 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Allen-KH Cheng <allen-kh.cheng@...iatek.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <pratyush@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-mtd@...ts.infradead.org
Cc:     linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        Bayi Cheng <bayi.cheng@...iatek.com>
Subject: Re: [PATCH] mtd: spi-nor: Fix the number of bytes for the dummy
 cycles

Il 31/10/22 13:46, Allen-KH Cheng ha scritto:
> The number of bytes used by spi_nor_spimem_check_readop() may be
> incorrect for the dummy cycles. Since nor->read_dummy is not initialized
> before spi_nor_spimem_adjust_hwcaps().
> 
> We use both mode and wait state clock cycles instead of nor->read_dummy.
> 
> Fixes: 0e30f47232ab ("mtd: spi-nor: add support for DTR protocol")
> Co-developed-by: Bayi Cheng <bayi.cheng@...iatek.com>
> Signed-off-by: Bayi Cheng <bayi.cheng@...iatek.com>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> Tested-by: Dhruva Gole <d-gole@...com>

On MT8195 Tomato Chromebook:
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>