From c56702de106b4fde301282f7ea60412276481442 Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Mon, 16 Aug 2010 15:54:06 +0200
Subject: [PATCH] clock-imx35: correct arm and ahb clock calculation
According to the Datasheet:
"i.MX35 (MCIMX35) Multimedia Applications Processor Reference Manual,
Rev. 2" "Figure 14-24. Clock Control And Gating"
change the result of get_rate_ahb based on the frequency returned
by get_rate_arm to calculate the proper rate.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/mach-mx3/clock-imx35.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-mx3/clock-imx35.c b/arch/arm/mach-mx3/clock-imx35.c
index e582ceb6e0c1..1d311b77b40e 100644
--- a/arch/arm/mach-mx3/clock-imx35.c
+++ b/arch/arm/mach-mx3/clock-imx35.c
@@ -155,7 +155,7 @@ static unsigned long get_rate_arm(void)
aad = &clk_consumer[(pdr0 >> 16) & 0xf];
if (aad->sel)
- fref = fref * 2 / 3;
+ fref = fref * 3 / 4;
return fref / aad->arm;
}
@@ -164,7 +164,7 @@ static unsigned long get_rate_ahb(struct clk *clk)
{
unsigned long pdr0 = __raw_readl(CCM_BASE + CCM_PDR0);
struct arm_ahb_div *aad;
- unsigned long fref = get_rate_mpll();
+ unsigned long fref = get_rate_arm();
aad = &clk_consumer[(pdr0 >> 16) & 0xf];