From: Marek Vasut <marek.vasut@gmail.com>
Date: Fri, 18 Jun 2010 05:48:54 +0000 (+0200)
Subject: [ARM] pxa: fix frequency scaling for pcmcia/pxa2xx_base
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d344a21a9a8c29a2f9a29090df134861475a161f;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

[ARM] pxa: fix frequency scaling for pcmcia/pxa2xx_base

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>
Cc: Nicolas Pitre <nico@fluxnic.net>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
---

diff --git a/drivers/pcmcia/pxa2xx_base.c b/drivers/pcmcia/pxa2xx_base.c
index df4532e91b1a..f370476d5417 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;
 	}