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From: marek.vasut@gmail.com (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] pxa2xx/cpufreq: Fix PCMCIA frequency scaling
Date: Thu, 24 Jun 2010 15:57:13 +0200	[thread overview]
Message-ID: <1277387833-5419-3-git-send-email-marek.vasut@gmail.com> (raw)
In-Reply-To: <1277387833-5419-1-git-send-email-marek.vasut@gmail.com>

The MCxx values must be based off memory clock, not CPU core clock.

This also fixes the bug where on some machines the LCD went crazy while using
PCMCIA.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
---
 drivers/pcmcia/pxa2xx_base.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/pcmcia/pxa2xx_base.c b/drivers/pcmcia/pxa2xx_base.c
index df4532e..f370476 100644
--- a/drivers/pcmcia/pxa2xx_base.c
+++ b/drivers/pcmcia/pxa2xx_base.c
@@ -178,7 +178,6 @@ pxa2xx_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
 			       unsigned long val,
 			       struct cpufreq_freqs *freqs)
 {
-#warning "it's not clear if this is right since the core CPU (N) clock has no effect on the memory (L) clock"
 	switch (val) {
 	case CPUFREQ_PRECHANGE:
 		if (freqs->new > freqs->old) {
@@ -186,7 +185,7 @@ pxa2xx_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
 			       "pre-updating\n",
 			       freqs->new / 1000, (freqs->new / 100) % 10,
 			       freqs->old / 1000, (freqs->old / 100) % 10);
-			pxa2xx_pcmcia_set_mcxx(skt, freqs->new);
+			pxa2xx_pcmcia_set_timing(skt);
 		}
 		break;
 
@@ -196,7 +195,7 @@ pxa2xx_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
 			       "post-updating\n",
 			       freqs->new / 1000, (freqs->new / 100) % 10,
 			       freqs->old / 1000, (freqs->old / 100) % 10);
-			pxa2xx_pcmcia_set_mcxx(skt, freqs->new);
+			pxa2xx_pcmcia_set_timing(skt);
 		}
 		break;
 	}
-- 
1.7.1

  parent reply	other threads:[~2010-06-24 13:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-24 13:57 [PATCH 1/3] pxa3xx: Fix HSIO bus x24 multiplier Marek Vasut
2010-06-24 13:57 ` [PATCH 2/3] pxa2xx/cpufreq: Simplify DRI recomputation routine Marek Vasut
2010-06-28  4:38   ` Eric Miao
2010-06-28 12:04     ` Marek Vasut
2010-06-24 13:57 ` Marek Vasut [this message]
2010-06-28  4:53   ` [PATCH 3/3] pxa2xx/cpufreq: Fix PCMCIA frequency scaling Eric Miao
2010-06-28  3:56 ` [PATCH 1/3] pxa3xx: Fix HSIO bus x24 multiplier Eric Miao

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