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Temporarily set the max CPU frequency to 90MHz on the H300

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8077 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2005-11-27 01:12:16 +00:00
parent ec5366ac79
commit ddef7ee171
2 changed files with 8 additions and 0 deletions
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4
firmware/export/system.h
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@ -289,7 +289,11 @@ static inline void invalidate_icache(void)
#define CPUFREQ_DEFAULT (CPUFREQ_DEFAULT_MULT * CPU_FREQ) #define CPUFREQ_DEFAULT (CPUFREQ_DEFAULT_MULT * CPU_FREQ)
#define CPUFREQ_NORMAL_MULT 4 #define CPUFREQ_NORMAL_MULT 4
#define CPUFREQ_NORMAL (CPUFREQ_NORMAL_MULT * CPU_FREQ) #define CPUFREQ_NORMAL (CPUFREQ_NORMAL_MULT * CPU_FREQ)
#ifdef IRIVER_H300_SERIES
#define CPUFREQ_MAX_MULT 8
#else
#define CPUFREQ_MAX_MULT 11 #define CPUFREQ_MAX_MULT 11
#endif
#define CPUFREQ_MAX (CPUFREQ_MAX_MULT * CPU_FREQ) #define CPUFREQ_MAX (CPUFREQ_MAX_MULT * CPU_FREQ)
#elif CONFIG_CPU == PP5020 #elif CONFIG_CPU == PP5020

4
firmware/system.c
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@ -599,7 +599,11 @@ void set_cpu_frequency(long frequency)
/* Refresh timer for bypass frequency */ /* Refresh timer for bypass frequency */
PLLCR &= ~1; /* Bypass mode */ PLLCR &= ~1; /* Bypass mode */
timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, false); timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, false);
#ifdef IRIVER_H300_SERIES
PLLCR = 0x1183e005;
#else
PLLCR = 0x11856005; PLLCR = 0x11856005;
#endif
CSCR0 = 0x00001180; /* Flash: 4 wait states */ CSCR0 = 0x00001180; /* Flash: 4 wait states */
CSCR1 = 0x00000980; /* LCD: 2 wait states */ CSCR1 = 0x00000980; /* LCD: 2 wait states */
while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked. while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked.