From: Jaehoon Chung <jh80.chung@samsung.com>
Date: Tue, 20 Jul 2010 05:26:46 +0000 (+0900)
Subject: s5pc110: mmc: Add Tx Feedback clock
X-Git-Tag: JG03_20100720
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Ftags%2FJG03_20100720;p=kernel%2Fu-boot.git

s5pc110: mmc: Add Tx Feedback clock
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
---

diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c
index 517f6d0..b8c17e0 100644
--- a/drivers/mmc/s5p_mmc.c
+++ b/drivers/mmc/s5p_mmc.c
@@ -341,12 +341,16 @@ static void mmc_set_ios(struct mmc *mmc)
 
 	val |=	(1 << 31) |	/* write status clear async mode enable */
 		(1 << 30) |	/* command conflict mask enable */
+		(1 << 15) |	/* Feedback Clock Enable for Tx Clock */
 		(1 << 14) |	/* Feedback Clock Enable for Rx Clock */
 		(1 << 8);	/* SDCLK hold enable */
 
 	writel(val, &host->reg->control2);
 
 	/*
+	 * FCSEL3[31] FCSEL2[23]
+	 * FCSel[3:2] : Tx Feedback Clock Delay Control
+	 *
 	 * FCSEL1[15] FCSEL0[7]
 	 * FCSel[1:0] : Rx Feedback Clock Delay Control
 	 *	Inverter delay means10ns delay if SDCLK 50MHz setting
@@ -355,12 +359,8 @@ static void mmc_set_ios(struct mmc *mmc)
 	 *	00 = Delay3 (inverter delay)
 	 *	10 = Delay4 (inverter delay + 2ns)
 	 */
-	val =0;
 
-	if (mmc->clock >= 26000000)
-		val |= 0x8080;
-
-	writel(val, &host->reg->control3);
+	writel(0x80800000, &host->reg->control3);
 
 	mmc_change_clock(host, mmc->clock);