linux-kernel - [PATCH v4] mtd: spi-nor: add support for GD25Q256

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Date:   Tue, 25 Jul 2017 18:12:54 +0800
From:   Andy Yan <andy.yan@...k-chips.com>
To:     cyrille.pitchen@...ev4u.fr
Cc:     linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        boris.brezillon@...e-electrons.com, marek.vasut@...il.com,
        computersforpeace@...il.com, richard@....at, dwmw2@...radead.org,
        Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH v4] mtd: spi-nor: add support for GD25Q256

Add support for GD25Q256, a 32MiB SPI Nor
flash from Gigadevice.

Signed-off-by: Andy Yan <andy.yan@...k-chips.com>

---

Changes in v4:
- add SPI_NOR_HAS_LOCK and SPI_NOR_HAS_TB

Changes in v3:
- rebase on top of spi-nor tree
- add SPI_NOR_4B_OPCODES flag

Changes in v2:
- drop one line unnecessary modification

 drivers/mtd/spi-nor/spi-nor.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 196b52f..e4145cd 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -986,6 +986,11 @@ static const struct flash_info spi_nor_ids[] = {
 			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
 			SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
 	},
+	{
+		"gd25q256", INFO(0xc84019, 0, 64 * 1024, 512,
+			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+			SPI_NOR_4B_OPCODES | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+	},
 
 	/* Intel/Numonyx -- xxxs33b */
 	{ "160s33b",  INFO(0x898911, 0, 64 * 1024,  32, 0) },
@@ -2365,6 +2370,7 @@ static int spi_nor_init_params(struct spi_nor *nor,
 				   SNOR_HWCAPS_PP_QUAD)) {
 		switch (JEDEC_MFR(info)) {
 		case SNOR_MFR_MACRONIX:
+		case SNOR_MFR_GIGADEVICE:
 			params->quad_enable = macronix_quad_enable;
 			break;
 
-- 
2.7.4