diff options
Diffstat (limited to 'cpu/mips/incaip_clock.c')
| -rw-r--r-- | cpu/mips/incaip_clock.c | 41 |
1 files changed, 19 insertions, 22 deletions
diff --git a/cpu/mips/incaip_clock.c b/cpu/mips/incaip_clock.c index 7fc6eb0..27f0609 100644 --- a/cpu/mips/incaip_clock.c +++ b/cpu/mips/incaip_clock.c @@ -25,14 +25,13 @@ #include <asm/inca-ip.h> - /******************************************************************************* * -* get_cpuclk - returns the frequency of the CPU. +* get_cpuclk - returns the frequency of the CPU. * * Gets the value directly from the INCA-IP hardware. * -* RETURNS: +* RETURNS: * 150.000.000 for 150 MHz * 130.000.000. for 130 Mhz * 100.000.000. for 100 Mhz @@ -55,24 +54,24 @@ uint incaip_get_cpuclk(void) else { /* MUX I set to 100/133 MHz clock */ - if (*((volatile ulong*)INCA_IP_CGU_CGU_DIVCR) & 0x40) + if (*((volatile ulong*)INCA_IP_CGU_CGU_DIVCR) & 0x40) { - /* Division value is 1/3, maximum CPU operating */ - /* frequency is 133.3 MHz */ - return 130000000; + /* Division value is 1/3, maximum CPU operating */ + /* frequency is 133.3 MHz */ + return 130000000; } else { - /* Division value is 1/4, maximum CPU operating */ - /* frequency is 100 MHz */ - return 100000000; + /* Division value is 1/4, maximum CPU operating */ + /* frequency is 100 MHz */ + return 100000000; } } } /******************************************************************************* * -* get_fpiclk - returns the frequency of the FPI bus. +* get_fpiclk - returns the frequency of the FPI bus. * * Gets the value directly from the INCA-IP hardware. * @@ -82,26 +81,24 @@ uint incaip_get_cpuclk(void) * This functions should be used by the hardware driver to get the correct * frequency of the CPU. Don't use the macros, which are set to init the CPU * frequency in the ROM code. -* The calculation for the +* The calculation for the */ uint incaip_get_fpiclk(void) { uint clkCPU; - + clkCPU = incaip_get_cpuclk(); - + switch (*((volatile ulong*)INCA_IP_CGU_CGU_DIVCR) & 0xC) { case 0x4: - return clkCPU >> 1; /* devided by 2 */ - break; + return clkCPU >> 1; /* devided by 2 */ + break; case 0x8: - return clkCPU >> 2; /* devided by 4 */ - break; + return clkCPU >> 2; /* devided by 4 */ + break; default: - return clkCPU; - break; + return clkCPU; + break; } } - - |