From: John Linn <john.linn@xilinx.com>
Date: Tue, 13 Dec 2011 20:55:56 +0000 (-0800)
Subject: Xilinx: ARM: SD: change divisor to speed it up
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5cf690d4b17f04059e286ab196a7cd49a6839129;p=thirdparty%2Fu-boot.git

Xilinx: ARM: SD: change divisor to speed it up

In the former change, a divisor too low seems cause problems
with the lower speed cards. This is attempt to have something
that's tolerable even if it's not the optimal.

This allows the kernel and ramdisk to be loaded reasonably
quickly.
---

diff --git a/board/xilinx/dfe/mmc.c b/board/xilinx/dfe/mmc.c
index 91b21db0112..91d444f75ab 100755
--- a/board/xilinx/dfe/mmc.c
+++ b/board/xilinx/dfe/mmc.c
@@ -73,7 +73,7 @@ static void init_port(void)
 	sd_out8(SD_PWR_CTRL_R, SD_POWER_33|SD_POWER_ON);
 
 	/* Enable Internal clock and wait for it to stablilize */
-	clk = (0x40 << SD_DIV_SHIFT) | SD_CLK_INT_EN;
+	clk = (0x4 << SD_DIV_SHIFT) | SD_CLK_INT_EN;
 	sd_out16(SD_CLK_CTL_R, clk);
 	do {
 		clk = sd_in16(SD_CLK_CTL_R);