[PATCH 3/3] mtd: spi-nor: support lock/unlock for a few Micron chip s

Jungseung Lee js07.lee at samsung.com
Fri Jan 10 02:22:57 PST 2020


Some Micron models are known to have lock/unlock support,
and that also support 4bit block protection bit (bp0-3).
This patch support lock/unlock feature on the flash.

Tested on w25q512ax3. The Other is modified following the datasheet.

Signed-off-by: Jungseung Lee <js07.lee at samsung.com>
---
 drivers/mtd/spi-nor/spi-nor.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 214f3b733e9b..da285ab56a3d 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -2558,12 +2558,17 @@ static const struct flash_info spi_nor_ids[] = {
 	{ "mt25ql512a",  INFO6(0x20ba20, 0x104400, 64 * 1024, 1024,
 			       SECT_4K | USE_FSR | SPI_NOR_DUAL_READ |
 			       SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
-	{ "n25q512ax3",  INFO(0x20ba20, 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_DUAL_READ |
+			       SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB |
+			       SPI_NOR_HAS_BP3 | SPI_NOR_BP3_SR_BIT6) },
 	{ "mt25qu512a",  INFO6(0x20bb20, 0x104400, 64 * 1024, 1024,
 			       SECT_4K | USE_FSR | SPI_NOR_DUAL_READ |
 			       SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
-	{ "n25q512a",    INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K |
-			      USE_FSR | SPI_NOR_QUAD_READ) },
+	{ "n25q512a",    INFO(0x20bb20, 0, 64 * 1024, 1024,
+			       SECT_4K | USE_FSR | SPI_NOR_QUAD_READ |
+			       SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB |
+			       SPI_NOR_HAS_BP3 | SPI_NOR_BP3_SR_BIT6) },
 	{ "n25q00",      INFO(0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
 	{ "n25q00a",     INFO(0x20bb21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
 	{ "mt25ql02g",   INFO(0x20ba22, 0, 64 * 1024, 4096,
-- 
2.17.1




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