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[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>
This commit is contained in:
Marek Vasut 2010-06-18 07:48:54 +02:00 committed by Eric Miao
parent 3d3d0fbf4d
commit d344a21a9a
1 changed files with 2 additions and 3 deletions
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5
drivers/pcmcia/pxa2xx_base.c
View File

@ -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;
}