From mboxrd@z Thu Jan 1 00:00:00 1970 From: computersforpeace@gmail.com (Brian Norris) Date: Sat, 28 Feb 2015 01:01:22 -0800 Subject: [PATCH v4 1/2] mtd: nand: pxa3xx: Fix PIO FIFO draining In-Reply-To: <1424255528-1717-2-git-send-email-maxime.ripard@free-electrons.com> References: <1424255528-1717-1-git-send-email-maxime.ripard@free-electrons.com> <1424255528-1717-2-git-send-email-maxime.ripard@free-electrons.com> Message-ID: <20150228090122.GA11148@brian-ubuntu> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Feb 18, 2015 at 11:32:07AM +0100, Maxime Ripard wrote: > The NDDB register holds the data that are needed by the read and write > commands. > > However, during a read PIO access, the datasheet specifies that after each 32 > bytes read in that register, when BCH is enabled, we have to make sure that the > RDDREQ bit is set in the NDSR register. > > This fixes an issue that was seen on the Armada 385, and presumably other mvebu > SoCs, when a read on a newly erased page would end up in the driver reporting a > timeout from the NAND. > > Cc: # v3.14 > Signed-off-by: Maxime Ripard Pushed this one to linux-mtd.git. I'll try to get it out in the 4.0 cycle. I assume patch 2 (the DT addition) will go through arm-soc. Brian