From: marek.vasut@gmail.com (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/4] pxa2xx/cpufreq: Simplify DRI recomputation routine
Date: Fri, 18 Jun 2010 07:48:53 +0200 [thread overview]
Message-ID: <1276840135-5982-2-git-send-email-marek.vasut@gmail.com> (raw)
In-Reply-To: <1276840135-5982-1-git-send-email-marek.vasut@gmail.com>
This patch:
1) Simpifies the DRI recomputation routine by pulling out the common code
2) Fixes a bug in PXA27x DRI recomputation caused by incorrect parenthesis
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
---
arch/arm/mach-pxa/cpufreq-pxa2xx.c | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-pxa/cpufreq-pxa2xx.c b/arch/arm/mach-pxa/cpufreq-pxa2xx.c
index 1949850..74fc4b5 100644
--- a/arch/arm/mach-pxa/cpufreq-pxa2xx.c
+++ b/arch/arm/mach-pxa/cpufreq-pxa2xx.c
@@ -256,12 +256,13 @@ static void init_sdram_rows(void)
static u32 mdrefr_dri(unsigned int freq)
{
- u32 dri = 0;
+ u32 dri = freq * SDRAM_TREF / sdram_rows;
- if (cpu_is_pxa25x())
- dri = ((freq * SDRAM_TREF) / (sdram_rows * 32));
if (cpu_is_pxa27x())
- dri = ((freq * SDRAM_TREF) / (sdram_rows - 31)) / 32;
+ dri -= 31;
+
+ dri /= 32;
+
return dri;
}
--
1.7.1
next prev parent reply other threads:[~2010-06-18 5:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-18 5:48 [PATCH 1/4] pxa2xx/cpufreq: Simplify CPU frequency change asm Marek Vasut
2010-06-18 5:48 ` Marek Vasut [this message]
2010-06-22 18:33 ` [PATCH 2/4] pxa2xx/cpufreq: Simplify DRI recomputation routine Robert Jarzmik
2010-06-18 5:48 ` [PATCH 3/4] pxa2xx/cpufreq: Fix PCMCIA frequency scaling Marek Vasut
2010-06-23 17:49 ` Robert Jarzmik
2010-06-24 18:51 ` Marek Vasut
2010-06-24 19:12 ` Russell King - ARM Linux
2010-06-24 19:33 ` Marek Vasut
2010-06-24 19:46 ` Nicolas Pitre
2010-06-28 4:48 ` Eric Miao
2010-06-18 5:48 ` [PATCH 4/4] pxa2xx/pcmcia: Prepare for pxa320 Marek Vasut
2010-06-23 19:00 ` [PATCH 1/4] pxa2xx/cpufreq: Simplify CPU frequency change asm Robert Jarzmik
2010-06-24 3:17 ` Marek Vasut
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