From 342672bbdf713654316a0ff73c7f2ecf7ea6693d Mon Sep 17 00:00:00 2001 From: Michael Walle Date: Fri, 21 Jun 2024 14:09:29 +0200 Subject: [PATCH] mtd: spi-nor: winbond: fix w25q128 regression Upstream commit d35df77707bf5ae1221b5ba1c8a88cf4fcdd4901 ("mtd: spi-nor: winbond: fix w25q128 regression") however the code has changed a lot after v6.6 so the patch did not apply to v6.6 or v6.1 which still has the problem. This patch fixes the issue in the way of the old API and has been tested on hardware. Please apply it for v6.1 and v6.6. Commit 83e824a4a595 ("mtd: spi-nor: Correct flags for Winbond w25q128") removed the flags for non-SFDP devices. It was assumed that it wasn't in use anymore. This wasn't true. Add the no_sfdp_flags as well as the size again. We add the additional flags for dual and quad read because they have been reported to work properly by Hartmut using both older and newer versions of this flash, the similar flashes with 64Mbit and 256Mbit already have these flags and because it will (luckily) trigger our legacy SFDP parsing, so newer versions with SFDP support will still get the parameters from the SFDP tables. Reported-by: Hartmut Birr Closes: https://lore.kernel.org/r/CALxbwRo_-9CaJmt7r7ELgu+vOcgk=xZcGHobnKf=oT2=u4d4aA@mail.gmail.com/ Fixes: 83e824a4a595 ("mtd: spi-nor: Correct flags for Winbond w25q128") Reviewed-by: Linus Walleij Signed-off-by: Michael Walle Acked-by: Tudor Ambarus Reviewed-by: Esben Haabendal Reviewed-by: Pratyush Yadav Signed-off-by: Pratyush Yadav Link: https://lore.kernel.org/r/20240621120929.2670185-1-mwalle@kernel.org [Backported to v6.6 - vastly different due to upstream changes] Reviewed-by: Tudor Ambarus Signed-off-by: Linus Walleij --- drivers/mtd/spi-nor/winbond.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/mtd/spi-nor/winbond.c +++ b/drivers/mtd/spi-nor/winbond.c @@ -120,9 +120,10 @@ static const struct flash_info winbond_n NO_SFDP_FLAGS(SECT_4K) }, { "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16) NO_SFDP_FLAGS(SECT_4K) }, - { "w25q128", INFO(0xef4018, 0, 0, 0) - PARSE_SFDP - FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, + { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256) + FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) + NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | + SPI_NOR_QUAD_READ) }, { "w25q256", INFO(0xef4019, 0, 64 * 1024, 512) NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) .fixups = &w25q256_fixups },