From: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
To: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"boris.brezillon@bootlin.com" <boris.brezillon@bootlin.com>,
"broonie@kernel.org" <broonie@kernel.org>,
"marek.vasut@gmail.com" <marek.vasut@gmail.com>,
"vigneshr@ti.com" <vigneshr@ti.com>,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Cc: "robh@kernel.org" <robh@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"computersforpeace@gmail.com" <computersforpeace@gmail.com>,
"frieder.schrempf@exceet.de" <frieder.schrempf@exceet.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
Subject: [PATCH v4 3/7] mtd: spi-nor: add opcodes for octo Read/Write commands
Date: Thu, 22 Nov 2018 05:14:43 +0000 [thread overview]
Message-ID: <1542863544-21257-4-git-send-email-yogeshnarayan.gaur@nxp.com> (raw)
In-Reply-To: <1542863544-21257-1-git-send-email-yogeshnarayan.gaur@nxp.com>
- Add opcodes for octo I/O commands
* Read : 1-1-8 and 1-8-8 protocol
* Write : 1-1-8 and 1-8-8 protocol
* opcodes for 4-byte address mode command
- Entry of macros in _convert_3to4_xxx function
- Add flag specifying flash support octo read commands.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
---
Changes for v4:
- None
Changes for v3:
- Modified string 'octal' with 'octo'.
Changes for v2:
- Incorporated review comments of Boris and Vignesh
drivers/mtd/spi-nor/spi-nor.c | 12 ++++++++++++
include/linux/mtd/spi-nor.h | 8 ++++++++
2 files changed, 20 insertions(+)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 398d273..356ac5d 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -90,6 +90,7 @@ struct flash_info {
#define NO_CHIP_ERASE BIT(12) /* Chip does not support chip erase */
#define SPI_NOR_SKIP_SFDP BIT(13) /* Skip parsing of SFDP tables */
#define USE_CLSR BIT(14) /* use CLSR command */
+#define SPI_NOR_OCTO_READ BIT(15) /* Flash supports Octal Read */
int (*quad_enable)(struct spi_nor *nor);
};
@@ -209,6 +210,8 @@ static inline u8 spi_nor_convert_3to4_read(u8 opcode)
{ SPINOR_OP_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B },
{ SPINOR_OP_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B },
{ SPINOR_OP_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B },
+ { SPINOR_OP_READ_1_1_8, SPINOR_OP_READ_1_1_8_4B },
+ { SPINOR_OP_READ_1_8_8, SPINOR_OP_READ_1_8_8_4B },
{ SPINOR_OP_READ_1_1_1_DTR, SPINOR_OP_READ_1_1_1_DTR_4B },
{ SPINOR_OP_READ_1_2_2_DTR, SPINOR_OP_READ_1_2_2_DTR_4B },
@@ -225,6 +228,8 @@ static inline u8 spi_nor_convert_3to4_program(u8 opcode)
{ SPINOR_OP_PP, SPINOR_OP_PP_4B },
{ SPINOR_OP_PP_1_1_4, SPINOR_OP_PP_1_1_4_4B },
{ SPINOR_OP_PP_1_4_4, SPINOR_OP_PP_1_4_4_4B },
+ { SPINOR_OP_PP_1_1_8, SPINOR_OP_PP_1_1_8_4B },
+ { SPINOR_OP_PP_1_8_8, SPINOR_OP_PP_1_8_8_4B },
};
return spi_nor_convert_opcode(opcode, spi_nor_3to4_program,
@@ -3195,6 +3200,13 @@ static int spi_nor_init_params(struct spi_nor *nor,
SNOR_PROTO_1_1_4);
}
+ if (info->flags & SPI_NOR_OCTO_READ) {
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8;
+ spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ_1_1_8],
+ 0, 8, SPINOR_OP_READ_1_1_8,
+ SNOR_PROTO_1_1_8);
+ }
+
/* Page Program settings. */
params->hwcaps.mask |= SNOR_HWCAPS_PP;
spi_nor_set_pp_settings(¶ms->page_programs[SNOR_CMD_PP],
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 8b1acf6..019f534 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -50,9 +50,13 @@
#define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */
#define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad Output SPI) */
#define SPINOR_OP_READ_1_4_4 0xeb /* Read data bytes (Quad I/O SPI) */
+#define SPINOR_OP_READ_1_1_8 0x8b /* Read data bytes (Octal Output SPI) */
+#define SPINOR_OP_READ_1_8_8 0xcb /* Read data bytes (Octal I/O SPI) */
#define SPINOR_OP_PP 0x02 /* Page program (up to 256 bytes) */
#define SPINOR_OP_PP_1_1_4 0x32 /* Quad page program */
#define SPINOR_OP_PP_1_4_4 0x38 /* Quad page program */
+#define SPINOR_OP_PP_1_1_8 0x82 /* Octal page program */
+#define SPINOR_OP_PP_1_8_8 0xc2 /* Octal page program */
#define SPINOR_OP_BE_4K 0x20 /* Erase 4KiB block */
#define SPINOR_OP_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */
#define SPINOR_OP_BE_32K 0x52 /* Erase 32KiB block */
@@ -73,9 +77,13 @@
#define SPINOR_OP_READ_1_2_2_4B 0xbc /* Read data bytes (Dual I/O SPI) */
#define SPINOR_OP_READ_1_1_4_4B 0x6c /* Read data bytes (Quad Output SPI) */
#define SPINOR_OP_READ_1_4_4_4B 0xec /* Read data bytes (Quad I/O SPI) */
+#define SPINOR_OP_READ_1_1_8_4B 0x7c /* Read data bytes (Octal Output SPI) */
+#define SPINOR_OP_READ_1_8_8_4B 0xcc /* Read data bytes (Octal I/O SPI) */
#define SPINOR_OP_PP_4B 0x12 /* Page program (up to 256 bytes) */
#define SPINOR_OP_PP_1_1_4_4B 0x34 /* Quad page program */
#define SPINOR_OP_PP_1_4_4_4B 0x3e /* Quad page program */
+#define SPINOR_OP_PP_1_1_8_4B 0x84 /* Octal page program */
+#define SPINOR_OP_PP_1_8_8_4B 0x8e /* Octal page program */
#define SPINOR_OP_BE_4K_4B 0x21 /* Erase 4KiB block */
#define SPINOR_OP_BE_32K_4B 0x5c /* Erase 32KiB block */
#define SPINOR_OP_SE_4B 0xdc /* Sector erase (usually 64KiB) */
--
2.7.4
next prev parent reply other threads:[~2018-11-22 5:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-22 5:14 [PATCH v4 0/7] spi: add support for octo mode Yogesh Narayan Gaur
2018-11-22 5:14 ` [PATCH v4 1/7] spi: add support for octo mode I/O data transfer Yogesh Narayan Gaur
2018-12-03 8:04 ` Boris Brezillon
2018-12-03 8:47 ` Yogesh Narayan Gaur
2018-11-22 5:14 ` [PATCH v4 2/7] spi: spi-mem: " Yogesh Narayan Gaur
2018-11-22 5:14 ` Yogesh Narayan Gaur [this message]
2018-11-22 5:14 ` [PATCH v4 4/7] mtd: spi-nor: add octo read flag for flash mt35xu512aba Yogesh Narayan Gaur
2018-11-22 5:14 ` [PATCH v4 5/7] mtd: m25p80: add support of octo mode I/O transfer Yogesh Narayan Gaur
2018-11-22 5:15 ` [PATCH v4 6/7] spi: nxp-fspi: add octo mode flag bit for octal support Yogesh Narayan Gaur
2018-11-22 5:15 ` [PATCH v4 7/7] arm64: dts: lx2160a: update fspi node Yogesh Narayan Gaur
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