From: Pratyush Yadav <p.yadav@ti.com>
To: Tudor Ambarus <tudor.ambarus@microchip.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Cc: Pratyush Yadav <p.yadav@ti.com>, Sekhar Nori <nsekhar@ti.com>,
Boris Brezillon <boris.brezillon@collabora.com>
Subject: [PATCH v14 06/15] mtd: spi-nor: core: use dummy cycle and address width info from SFDP
Date: Thu, 1 Oct 2020 00:27:23 +0530 [thread overview]
Message-ID: <20200930185732.6201-7-p.yadav@ti.com> (raw)
In-Reply-To: <20200930185732.6201-1-p.yadav@ti.com>
The xSPI Profile 1.0 table specifies how many dummy cycles and address
bytes are needed for the Read Status Register command in octal DTR mode.
Use that information to send the correct Read SR command.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
drivers/mtd/spi-nor/core.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 97e82a4821f6..1465cf80f978 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -385,6 +385,11 @@ static int spi_nor_read_sr(struct spi_nor *nor, u8 *sr)
SPI_MEM_OP_NO_DUMMY,
SPI_MEM_OP_DATA_IN(1, sr, 0));
+ if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {
+ op.addr.nbytes = nor->params->rdsr_addr_nbytes;
+ op.dummy.nbytes = nor->params->rdsr_dummy;
+ }
+
spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
ret = spi_mem_exec_op(nor->spimem, &op);
@@ -418,6 +423,11 @@ static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
SPI_MEM_OP_NO_DUMMY,
SPI_MEM_OP_DATA_IN(1, fsr, 0));
+ if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {
+ op.addr.nbytes = nor->params->rdsr_addr_nbytes;
+ op.dummy.nbytes = nor->params->rdsr_dummy;
+ }
+
spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
ret = spi_mem_exec_op(nor->spimem, &op);
--
2.28.0
next prev parent reply other threads:[~2020-09-30 18:58 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-30 18:57 [PATCH v14 00/15] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
2020-09-30 18:57 ` [PATCH v14 01/15] mtd: spi-nor: core: use EOPNOTSUPP instead of ENOTSUPP Pratyush Yadav
2020-10-01 7:19 ` Tudor.Ambarus
2020-10-01 7:34 ` Pratyush Yadav
2020-10-01 7:50 ` Miquel Raynal
2020-10-01 8:18 ` Tudor.Ambarus
2020-10-01 10:50 ` Vignesh Raghavendra
2020-09-30 18:57 ` [PATCH v14 02/15] mtd: spi-nor: add spi_nor_controller_ops_{read_reg,write_reg,erase}() Pratyush Yadav
2020-10-01 7:21 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 03/15] mtd: spi-nor: add support for DTR protocol Pratyush Yadav
2020-10-01 7:46 ` Tudor.Ambarus
2020-10-01 8:37 ` Pratyush Yadav
2020-10-01 8:49 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 04/15] mtd: spi-nor: sfdp: get command opcode extension type from BFPT Pratyush Yadav
2020-09-30 18:57 ` [PATCH v14 05/15] mtd: spi-nor: sfdp: parse xSPI Profile 1.0 table Pratyush Yadav
2020-10-01 7:49 ` Tudor.Ambarus
2020-09-30 18:57 ` Pratyush Yadav [this message]
2020-10-01 7:50 ` [PATCH v14 06/15] mtd: spi-nor: core: use dummy cycle and address width info from SFDP Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 07/15] mtd: spi-nor: core: do 2 byte reads for SR and FSR in DTR mode Pratyush Yadav
2020-10-01 7:52 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 08/15] mtd: spi-nor: core: enable octal DTR mode when possible Pratyush Yadav
2020-10-01 8:09 ` Tudor.Ambarus
2020-10-01 8:42 ` Pratyush Yadav
2020-09-30 18:57 ` [PATCH v14 09/15] mtd: spi-nor: Introduce SNOR_F_IO_MODE_EN_VOLATILE Pratyush Yadav
2020-09-30 18:57 ` [PATCH v14 10/15] mtd: spi-nor: Parse SFDP SCCR Map Pratyush Yadav
2020-10-01 8:20 ` Tudor.Ambarus
2020-10-01 11:56 ` Pratyush Yadav
2020-09-30 18:57 ` [PATCH v14 11/15] mtd: spi-nor: sfdp: detect Soft Reset sequence support from BFPT Pratyush Yadav
2020-10-01 8:21 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 12/15] mtd: spi-nor: core: perform a Soft Reset on shutdown Pratyush Yadav
2020-10-01 8:23 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 13/15] mtd: spi-nor: core: disable Octal DTR mode on suspend Pratyush Yadav
2020-10-01 8:26 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 14/15] mtd: spi-nor: spansion: add support for Cypress Semper flash Pratyush Yadav
2020-10-01 8:35 ` Tudor.Ambarus
2020-10-01 8:40 ` Pratyush Yadav
2020-10-01 8:50 ` Tudor.Ambarus
2020-09-30 18:57 ` [PATCH v14 15/15] mtd: spi-nor: micron-st: allow using MT35XU512ABA in Octal DTR mode Pratyush Yadav
2020-10-01 8:38 ` Tudor.Ambarus
2020-10-01 19:43 ` Pratyush Yadav
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