From: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Date: Fri, 1 Aug 2008 15:06:01 +0000 (+0200)
Subject: avr32: Reduce DataFlash bus speed to 8 MHz on ATNGW100
X-Git-Tag: firefly_0821_release~18360^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0fe9497e77acbca5205d48a620c80e5de1ab47b4;p=firefly-linux-kernel-4.4.55.git

avr32: Reduce DataFlash bus speed to 8 MHz on ATNGW100

Doing this in combination with "atmel_spi: fix hang due to missed
interrupt" appears to eliminate the overruns I'm seeing when using
JFFS2-on-DataFlash as /usr filesystem on the ATNGW100.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
---

diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c
index 670c87b2db12..b8286f1ce854 100644
--- a/arch/avr32/boards/atngw100/setup.c
+++ b/arch/avr32/boards/atngw100/setup.c
@@ -47,7 +47,7 @@ static struct eth_platform_data __initdata eth_data[2];
 static struct spi_board_info spi0_board_info[] __initdata = {
 	{
 		.modalias	= "mtd_dataflash",
-		.max_speed_hz	= 10000000,
+		.max_speed_hz	= 8000000,
 		.chip_select	= 0,
 	},
 };