From: Tudor Ambarus <tudor.ambarus@microchip.com> To: <p.yadav@ti.com>, <michael@walle.cc>, <broonie@kernel.org> Cc: <miquel.raynal@bootlin.com>, <richard@nod.at>, <vigneshr@ti.com>, <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org>, <nicolas.ferre@microchip.com>, <zhengxunli@mxic.com.tw>, <jaimeliao@mxic.com.tw>, Tudor Ambarus <tudor.ambarus@microchip.com> Subject: [PATCH 3/4] mtd: spi-nor: sfdp: Get the 8D-8D-8D byte order from BFPT Date: Fri, 18 Feb 2022 16:58:59 +0200 [thread overview] Message-ID: <20220218145900.1440045-4-tudor.ambarus@microchip.com> (raw) In-Reply-To: <20220218145900.1440045-1-tudor.ambarus@microchip.com> Parse BFPT in order to retrieve the byte order in 8D-8D-8D mode. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> --- drivers/mtd/spi-nor/sfdp.c | 3 +++ drivers/mtd/spi-nor/sfdp.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c index a5211543d30d..551edbb039f0 100644 --- a/drivers/mtd/spi-nor/sfdp.c +++ b/drivers/mtd/spi-nor/sfdp.c @@ -633,6 +633,9 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor, return -EOPNOTSUPP; } + if (bfpt.dwords[BFPT_DWORD(18)] & BFPT_DWORD18_BYTE_ORDER_SWAPPED) + nor->flags |= SNOR_F_DTR_BSWAP16; + return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt); } diff --git a/drivers/mtd/spi-nor/sfdp.h b/drivers/mtd/spi-nor/sfdp.h index bbf80d2990ab..9a834ea31c16 100644 --- a/drivers/mtd/spi-nor/sfdp.h +++ b/drivers/mtd/spi-nor/sfdp.h @@ -97,6 +97,7 @@ struct sfdp_bfpt { #define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */ #define BFPT_DWORD18_CMD_EXT_RES (0x2UL << 29) /* Reserved */ #define BFPT_DWORD18_CMD_EXT_16B (0x3UL << 29) /* 16-bit opcode */ +#define BFPT_DWORD18_BYTE_ORDER_SWAPPED BIT(31) struct sfdp_parameter_header { u8 id_lsb; -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Tudor Ambarus <tudor.ambarus@microchip.com> To: <p.yadav@ti.com>, <michael@walle.cc>, <broonie@kernel.org> Cc: <miquel.raynal@bootlin.com>, <richard@nod.at>, <vigneshr@ti.com>, <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org>, <nicolas.ferre@microchip.com>, <zhengxunli@mxic.com.tw>, <jaimeliao@mxic.com.tw>, Tudor Ambarus <tudor.ambarus@microchip.com> Subject: [PATCH 3/4] mtd: spi-nor: sfdp: Get the 8D-8D-8D byte order from BFPT Date: Fri, 18 Feb 2022 16:58:59 +0200 [thread overview] Message-ID: <20220218145900.1440045-4-tudor.ambarus@microchip.com> (raw) In-Reply-To: <20220218145900.1440045-1-tudor.ambarus@microchip.com> Parse BFPT in order to retrieve the byte order in 8D-8D-8D mode. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> --- drivers/mtd/spi-nor/sfdp.c | 3 +++ drivers/mtd/spi-nor/sfdp.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c index a5211543d30d..551edbb039f0 100644 --- a/drivers/mtd/spi-nor/sfdp.c +++ b/drivers/mtd/spi-nor/sfdp.c @@ -633,6 +633,9 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor, return -EOPNOTSUPP; } + if (bfpt.dwords[BFPT_DWORD(18)] & BFPT_DWORD18_BYTE_ORDER_SWAPPED) + nor->flags |= SNOR_F_DTR_BSWAP16; + return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt); } diff --git a/drivers/mtd/spi-nor/sfdp.h b/drivers/mtd/spi-nor/sfdp.h index bbf80d2990ab..9a834ea31c16 100644 --- a/drivers/mtd/spi-nor/sfdp.h +++ b/drivers/mtd/spi-nor/sfdp.h @@ -97,6 +97,7 @@ struct sfdp_bfpt { #define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */ #define BFPT_DWORD18_CMD_EXT_RES (0x2UL << 29) /* Reserved */ #define BFPT_DWORD18_CMD_EXT_16B (0x3UL << 29) /* 16-bit opcode */ +#define BFPT_DWORD18_BYTE_ORDER_SWAPPED BIT(31) struct sfdp_parameter_header { u8 id_lsb; -- 2.25.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2022-02-18 15:00 UTC|newest] Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-02-18 14:58 [PATCH 0/4] spi-mem: Allow specifying the byte order in DTR mode Tudor Ambarus 2022-02-18 14:58 ` Tudor Ambarus 2022-02-18 14:58 ` [PATCH 1/4] spi: " Tudor Ambarus 2022-02-18 14:58 ` Tudor Ambarus 2022-03-02 10:02 ` Pratyush Yadav 2022-03-02 10:02 ` Pratyush Yadav 2022-03-10 5:31 ` Tudor.Ambarus 2022-03-10 5:31 ` Tudor.Ambarus 2022-03-11 17:47 ` Pratyush Yadav 2022-03-11 17:47 ` Pratyush Yadav 2022-02-18 14:58 ` [PATCH 2/4] mtd: spi-nor: core: " Tudor Ambarus 2022-02-18 14:58 ` Tudor Ambarus 2022-02-21 7:36 ` Michael Walle 2022-02-21 7:36 ` Michael Walle 2022-02-22 14:02 ` Tudor.Ambarus 2022-02-22 14:02 ` Tudor.Ambarus 2022-02-22 14:23 ` Michael Walle 2022-02-22 14:23 ` Michael Walle 2022-03-02 11:34 ` Pratyush Yadav 2022-03-02 11:34 ` Pratyush Yadav 2022-03-10 8:54 ` Tudor.Ambarus 2022-03-10 8:54 ` Tudor.Ambarus 2022-02-18 14:58 ` Tudor Ambarus [this message] 2022-02-18 14:58 ` [PATCH 3/4] mtd: spi-nor: sfdp: Get the 8D-8D-8D byte order from BFPT Tudor Ambarus 2022-02-21 7:40 ` Michael Walle 2022-02-21 7:40 ` Michael Walle 2022-03-02 12:28 ` Pratyush Yadav 2022-03-02 12:28 ` Pratyush Yadav 2022-02-18 14:59 ` [PATCH 4/4] mtd: spi-nor: core: Introduce SPI_NOR_DTR_BSWAP16 no_sfdp_flag Tudor Ambarus 2022-02-18 14:59 ` Tudor Ambarus 2022-02-21 7:41 ` Michael Walle 2022-02-21 7:41 ` Michael Walle 2022-03-02 12:30 ` Pratyush Yadav 2022-03-02 12:30 ` Pratyush Yadav 2022-03-10 4:42 ` Tudor.Ambarus 2022-03-10 4:42 ` Tudor.Ambarus 2022-02-21 7:44 ` [PATCH 0/4] spi-mem: Allow specifying the byte order in DTR mode Michael Walle 2022-02-21 7:44 ` Michael Walle 2022-02-22 13:54 ` Tudor.Ambarus 2022-02-22 13:54 ` Tudor.Ambarus 2022-02-22 14:13 ` Michael Walle 2022-02-22 14:13 ` Michael Walle 2022-02-22 14:23 ` Tudor.Ambarus 2022-02-22 14:23 ` Tudor.Ambarus 2022-02-22 14:27 ` Michael Walle 2022-02-22 14:27 ` Michael Walle 2022-02-22 14:43 ` Tudor.Ambarus 2022-02-22 14:43 ` Tudor.Ambarus 2022-02-23 18:38 ` Pratyush Yadav 2022-02-23 18:38 ` Pratyush Yadav 2022-02-24 6:08 ` Tudor.Ambarus 2022-02-24 6:08 ` Tudor.Ambarus 2022-02-24 6:37 ` Tudor.Ambarus 2022-02-24 6:37 ` Tudor.Ambarus 2022-02-24 9:37 ` Michael Walle 2022-02-24 9:37 ` Michael Walle 2022-02-24 10:27 ` Tudor.Ambarus 2022-02-24 10:27 ` Tudor.Ambarus 2022-02-25 7:35 ` zhengxunli 2022-02-25 7:35 ` zhengxunli 2022-02-24 13:24 ` Pratyush Yadav 2022-02-24 13:24 ` Pratyush Yadav 2022-02-24 14:02 ` Michael Walle 2022-02-24 14:02 ` Michael Walle 2022-02-24 14:33 ` Tudor.Ambarus 2022-02-24 14:33 ` Tudor.Ambarus
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