[U-Boot] [PATCH] README: SPI Support: Add & explain undocumented SPI_FLASH options.

[Ahmed Samir Khalil]

CONFIG_SPI_FLASH_BAR & CONFIG_SPI_FLASH_MTD are used without
documentation. Documenting these options makes getting startup,
configuration & testing easier.

Signed-off-by: Ahmed Samir Khalil <engkhalil86 at gmail.com>
---
 README | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README b/README
index 1d0b946..6c2bea6 100644
--- a/README
+++ b/README
@@ -2689,6 +2689,16 @@ CBFS (Coreboot Filesystem) support
 		Timeout for waiting until spi transfer completed.
 		default: (CONFIG_SYS_HZ/100)     /* 10 ms */
 
+		CONFIG_SPI_FLASH_BAR
+		change buffer size, so the higher SPI memory bank becomes
+		accessible. This option is for SPI flash with at least two
+		memory banks (usually QSPI larger than 16MiB). For example,
+		check README.ti_qspi_dra_test.
+
+		CONFIG_SPI_FLASH_MTD
+		Register SPI Flash to the MTD subsystem to support mtd
+		partitioning and operations.
+
 - FPGA Support: CONFIG_FPGA
 
 		Enables FPGA subsystem.
-- 
2.7.4