Re: [U-Boot] [U-Boot, v5, 1/5] mtd: nand: don't use read_buf for 8-bit ONFI transfers

On Tue, May 06, 2014 at 12:46:16AM +0530, pekon gupta wrote:

From: Brian Norris computersforpeace@gmail.com

Porting below commit from linux-tree, preserving original authorship & commit log commit bd9c6e99b58255b9de1982711ac9487c9a2f18be Author: Brian Norris computersforpeace@gmail.com mtd: nand: don't use read_buf for 8-bit ONFI transfers

Use a repeated read_byte() instead of read_buf(), since for x16 buswidth devices, we need to avoid the upper I/O[16:9] bits. See the following commit for reference:

commit 05f7835975dad6b3b517f9e23415985e648fb875 (from linux-tree) Author: Uwe Kleine-König u.kleine-koenig@pengutronix.de Date: Thu Dec 5 22:22:04 2013 +0100

  mtd: nand: don't use {read,write}_buf for 8-bit transfers

Now, I think that all barriers to probing ONFI on x16 devices are removed, so remove the check from nand_flash_detect_onfi().

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

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