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powerpc/85xx: Add determining and report IFC frequency 

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Kumar Gala 2012-10-08 07:44:06 +00:00 committed by Andy Fleming
parent 553ae6f8f2
commit 800c73c410
2 changed files with 15 additions and 0 deletions
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4
arch/powerpc/cpu/mpc85xx/cpu.c
View File

@ -181,6 +181,10 @@ int checkcpu (void)
} }
#endif #endif
#if defined(CONFIG_FSL_IFC)
printf("IFC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
#endif
#ifdef CONFIG_CPM2 #ifdef CONFIG_CPM2
printf("CPM: %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus)); printf("CPM: %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
#endif #endif

11
arch/powerpc/cpu/mpc85xx/speed.c
View File

@ -39,6 +39,10 @@ DECLARE_GLOBAL_DATA_PTR;
void get_sys_info (sys_info_t * sysInfo) void get_sys_info (sys_info_t * sysInfo)
{ {
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#ifdef CONFIG_FSL_IFC
struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
u32 ccr;
#endif
#ifdef CONFIG_FSL_CORENET #ifdef CONFIG_FSL_CORENET
volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR); volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
unsigned int cpu; unsigned int cpu;
@ -230,6 +234,13 @@ void get_sys_info (sys_info_t * sysInfo)
sysInfo->freqLocalBus = lcrr_div; sysInfo->freqLocalBus = lcrr_div;
} }
#endif #endif
#if defined(CONFIG_FSL_IFC)
ccr = in_be32(&ifc_regs->ifc_ccr);
ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
sysInfo->freqLocalBus = sysInfo->freqSystemBus / ccr;
#endif
} }