From f85ebc5aae62200a0e1bc8e41969a6a520660e17 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <holger@freyther.de>
Date: Sun, 12 Jun 2016 22:12:13 +0200
Subject: [PATCH] nand: Make the toshiba flash (used in RevF/RevG)

Empirically these timings wait not long enough for erase to succedd,
we are waiting far longer than necessary but the RAUC system seems to
be a lot more stable now.
---
 nand.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/nand.c b/nand.c
index dfde5ab..c3d408c 100644
--- a/nand.c
+++ b/nand.c
@@ -508,7 +508,12 @@ nand_set_a1cr(uint8_t manID, uint8_t deviceID)
 		break;
 	/* Toshiba */
 	case 0x98:
-		AEMIF->A1CR = 0x102442DC;
+		/*
+		 * Factor 10 slower for R/W strobe than the current values. Seems
+		 * to improve stability with mount/rm/umount/mount/write/umount
+		 * cycle. Need to calculate good values based on the datasheet.
+		 */
+		AEMIF->A1CR = 0x20FEE7FC;
 		break;
 	default:
 		log_info( "Unsupported NAND device" );