[RFC][PATCH] mtd: spi: Set CONFIG_SF_DEFAULT_MODE default to 0

[Marek Vasut]

Before e2e95e5e254 ("spi: Update speed/mode on change") most systems
silently defaulted to SF bus mode 0. Now the mode is always updated,
which causes breakage. It seems most SF which are used as boot media
operate in bus mode 0, so switch that as the default.

This should fix booting at least on Altera SoCFPGA, ST STM32, Xilinx
ZynqMP, NXP iMX and Rockchip SoCs, which recently ran into trouble
with mode 3. Marvell Kirkwood and Xilinx microblaze need to be checked
as those might need mode 3.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Aleksandar Gerasimovski <aleksandar.gerasimovski at hitachi-powergrids.com>
Cc: Andreas Biessmann <andreas at biessmann.org>
Cc: Eugen Hristev <eugen.hristev at microchip.com>
Cc: Michal Simek <michal.simek at xilinx.com>
Cc: Patrice Chotard <patrice.chotard at foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Siew Chin Lim <elly.siew.chin.lim at intel.com>
Cc: Tom Rini <trini at konsulko.com>
Cc: Valentin Longchamp <valentin.longchamp at hitachi-powergrids.com>
Cc: Vignesh Raghavendra <vigneshr at ti.com>
---
 drivers/mtd/spi/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig
index b2291f72905..f03fe05e333 100644
--- a/drivers/mtd/spi/Kconfig
+++ b/drivers/mtd/spi/Kconfig
@@ -57,7 +57,7 @@ config SF_DEFAULT_CS
 config SF_DEFAULT_MODE
 	hex "SPI Flash default mode (see include/spi.h)"
 	depends on SPI_FLASH || DM_SPI_FLASH
-	default 3
+	default 0
 	help
 	  The default mode may be provided by the platform
 	  to handle the common case when only a single serial
-- 
2.33.0