[U-Boot] [PATCH 1/2] mtd: spi: Add SYS_SPI_BLOCK_SIZE to Kconfig

[tien.fong.chee at intel.com]

From: Tien Fong Chee <tien.fong.chee at intel.com>

Different SPI flash has different block erase size configuration, it can
be configured as block erase size or sub-block erase size, so
SYS_SPI_BLOCK_SIZE is created to provide UBI a consistent block reading.
UBI block reading would be eventually translated to offset
access into SPI regardless how the block erase size is configured on SPI.
This would made the UBI transparent from SPI layer.

Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
---
 drivers/mtd/spi/Kconfig | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig
index d3b007a731..ea3779c521 100644
--- a/drivers/mtd/spi/Kconfig
+++ b/drivers/mtd/spi/Kconfig
@@ -196,4 +196,11 @@ config SPI_FLASH_MTD
 
 	  If unsure, say N
 
+config SYS_SPI_BLOCK_SIZE
+	hex "SPI chip eraseblock size for UBI reading"
+	depends on SPL_SPI_FLASH_SUPPORT
+	default 65536
+	help
+	  Number of data bytes in a physical eraseblock for UBI reading.
+
 endmenu # menu "SPI Flash Support"
-- 
2.13.0