Re: [U-Boot] [U-Boot, v1, 1/3] ARM: omap: fix GPMC address-map size for NAND and NOR devices

On Fri, Jul 18, 2014 at 05:59:40PM +0530, pekon gupta wrote:

Fixes commit a0a37183bd75e74608bc78c8d0e2a34454f95a91 ARM: omap: merge GPMC initialization code for all platform

1. NAND device are not directly memory-mapped to CPU address-space, they are

indirectly accessed via following GPMC registers:

• GPMC_NAND_COMMAND_x
• GPMC_NAND_ADDRESS_x
• GPMC_NAND_DATA_x

Therefore from CPU's point of view, NAND address-map can be limited to just above register addresses. But GPMC chip-select address-map can be configured in granularity of 16MB only. So this patch uses GPMC_SIZE_16M for all NAND devices.

2. NOR device are directly memory-mapped to CPU address-space, so its

address-map size depends on actual addressable region in NOR FLASH device. So this patch uses CONFIG_SYS_FLASH_SIZE to derive GPMC chip-select address-map size configuration.

Signed-off-by: Pekon Gupta pekon@ti.com

Applied to u-boot-ti/master, thanks!