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[86.49.110.70]) by smtp.gmail.com with ESMTPSA id u11sm2033029wrg.35.2019.05.03.03.00.22 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Fri, 03 May 2019 03:00:22 -0700 (PDT) Subject: Re: [PATCH] mtd: spi-nor: enable 4B opcodes for n25q256a To: Simon Goldschmidt , linux-mtd@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Brian Norris , Richard Weinberger , David Woodhouse , Boris Brezillon , Tudor Ambarus References: <20190503085327.5180-1-simon.k.r.goldschmidt@gmail.com> From: Marek Vasut Openpgp: preference=signencrypt Message-ID: <8161008c-fafd-a89f-d2d8-413224844cd2@gmail.com> Date: Fri, 3 May 2019 12:00:21 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190503085327.5180-1-simon.k.r.goldschmidt@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/3/19 10:53 AM, Simon Goldschmidt wrote: > Tested on socfpga cyclone5 where this is required to ensure that the > boot rom can access this flash after warm reboot. Are you sure _all_ variants of the N25Q256 support 4NB opcodes ? I think there were some which didn't, but I might be wrong. > Signed-off-by: Simon Goldschmidt > --- > > drivers/mtd/spi-nor/spi-nor.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c > index fae147452..4cdec2cc2 100644 > --- a/drivers/mtd/spi-nor/spi-nor.c > +++ b/drivers/mtd/spi-nor/spi-nor.c > @@ -1874,7 +1874,7 @@ static const struct flash_info spi_nor_ids[] = { > { "n25q064a", INFO(0x20bb17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) }, > { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) }, > { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) }, > - { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, > + { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) }, > { "n25q256ax1", INFO(0x20bb19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_QUAD_READ) }, > { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, > { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, > -- Best regards, Marek Vasut