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HD200 - lm339 response time is at best 300 ns so adcclk can not be too high

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26158 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Marcin Bukat 2010-05-19 09:29:20 +00:00
parent cc61f03915
commit 38136345f6
1 changed files with 9 additions and 0 deletions
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9
firmware/target/coldfire/mpio/hd200/system-hd200.c
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@ -77,6 +77,9 @@ void cf_set_cpu_frequency(long frequency)
IDECONFIG1 = (1<<28)|(1<<20)|(1<<18)|(1<<13)|(3<<10);
/* BUFEN2 enable on /CS2 | CS2Post 1 clock| CS2Pre 3 clocks*/
IDECONFIG2 = (1<<18)|(1<<16)|(1<<8)|(1<<0); /* TA /CS2 enable + CS2wait */
and_l(~(0x07<<16), &ADCONFIG);
or_l(((1<<7)|(1<<2)|(1<<0))<<16, &ADCONFIG); /* adclk = busclk/32 */
break;
case CPUFREQ_NORMAL:
@ -94,6 +97,9 @@ void cf_set_cpu_frequency(long frequency)
cpu_frequency = CPUFREQ_NORMAL;
IDECONFIG1 = (1<<28)|(1<<20)|(1<<18)|(1<<13)|(1<<10);
IDECONFIG2 = (1<<18)|(1<<16);
and_l(~(0x07<<16), &ADCONFIG);
or_l(((1<<7)|(1<<1)|(1<<0))<<16, &ADCONFIG); /* adclk = busclk/8 */
break;
default:
@ -109,6 +115,9 @@ void cf_set_cpu_frequency(long frequency)
cpu_frequency = CPUFREQ_DEFAULT;
IDECONFIG1 = (1<<28)|(1<<20)|(1<<18)|(1<<13)|(1<<10);
IDECONFIG2 = (1<<18)|(1<<16);
and_l(~(0x07<<16), &ADCONFIG);
or_l(((1<<7)|(1<<0))<<16, &ADCONFIG); /* adclk = busclk/2 */
break;
}
}