diff options
Diffstat (limited to 'cpu/mpc83xx/speed.c')
| -rw-r--r-- | cpu/mpc83xx/speed.c | 39 |
1 files changed, 18 insertions, 21 deletions
diff --git a/cpu/mpc83xx/speed.c b/cpu/mpc83xx/speed.c index 6530fbfd3f..260137da82 100644 --- a/cpu/mpc83xx/speed.c +++ b/cpu/mpc83xx/speed.c @@ -101,7 +101,7 @@ int get_clocks (void) u32 corecnf_tab_index; u8 corepll; u32 lcrr; - + u32 csb_clk; u32 tsec1_clk; u32 tsec2_clk; @@ -113,10 +113,10 @@ int get_clocks (void) u32 lbiu_clk; u32 lclk_clk; u32 ddr_clk; - + if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im) return -1; - + #ifndef CFG_HRCW_HIGH # error "CFG_HRCW_HIGH must be defined in include/configs/MCP83XXADS.h" #endif /* CFG_HCWD_HIGH */ @@ -133,7 +133,6 @@ int get_clocks (void) /* though RCWH_PCIHOST is defined in CFG_HRCW_HIGH the im->reset.rcwhr PCI Host Mode is disabled */ /* FIXME: findout if there is a way to issue some warning */ return -2; - } if (im->clk.spmr & SPMR_CKID) { pci_sync_in = CONFIG_83XX_CLKIN / 2; /* PCI Clock is half CONFIG_83XX_CLKIN */ @@ -157,17 +156,16 @@ int get_clocks (void) #endif /* (CFG_HRCW_HIGH | RCWH_PCIHOST) */ /* we have up to date pci_sync_in */ - spmf = ((im->reset.rcwl & RCWL_SPMF) >> RCWL_SPMF_SHIFT); clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT); - + if ((im->reset.rcwl & RCWL_LBIUCM) || (im->reset.rcwl & RCWL_DDRCM)) { csb_clk = (pci_sync_in * spmf * (1 + clkin_div)) / 2; } else { csb_clk = pci_sync_in * spmf * (1 + clkin_div); } - + sccr = im->clk.sccr; switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) { case 0: @@ -186,7 +184,7 @@ int get_clocks (void) /* unkown SCCR_TSEC1CM value */ return -4; } - + switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) { case 0: tsec2_clk = 0; @@ -205,7 +203,7 @@ int get_clocks (void) return -5; } i2c_clk = tsec2_clk; - + switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) { case 0: enc_clk = 0; @@ -223,7 +221,7 @@ int get_clocks (void) /* unkown SCCR_ENCCM value */ return -6; } - + switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) { case 0: usbmph_clk = 0; @@ -259,14 +257,14 @@ int get_clocks (void) /* unkown SCCR_USBDRCM value */ return -8; } - + if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk ) { /* if USB MPH clock is not disabled and USB DR clock is not disabled than USB MPH & USB DR must have the same rate */ return -9; } - + lbiu_clk = csb_clk * (1 + ((im->reset.rcwl & RCWL_LBIUCM) >> RCWL_LBIUCM_SHIFT)); lcrr = (im->lbus.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT; switch (lcrr) { @@ -279,9 +277,9 @@ int get_clocks (void) /* unknown lcrr */ return -10; } - + ddr_clk = csb_clk * (1 + ((im->reset.rcwl & RCWL_DDRCM) >> RCWL_DDRCM_SHIFT)); - + corepll = (im->reset.rcwl & RCWL_COREPLL) >> RCWL_COREPLL_SHIFT; corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5); if (corecnf_tab_index > (sizeof(corecnf_tab)/sizeof(corecnf_t)) ) { @@ -310,7 +308,7 @@ int get_clocks (void) /* unkown core to csb ratio */ return -12; } - + gd->csb_clk = csb_clk ; gd->tsec1_clk = tsec1_clk ; gd->tsec2_clk = tsec2_clk ; @@ -318,11 +316,11 @@ int get_clocks (void) gd->usbmph_clk = usbmph_clk; gd->usbdr_clk = usbdr_clk ; gd->i2c_clk = i2c_clk ; - gd->enc_clk = enc_clk ; + gd->enc_clk = enc_clk ; gd->lbiu_clk = lbiu_clk ; gd->lclk_clk = lclk_clk ; gd->ddr_clk = ddr_clk ; - + gd->cpu_clk = gd->core_clk; gd->bus_clk = gd->lbiu_clk; return 0; @@ -341,7 +339,7 @@ ulong get_bus_freq (ulong dummy) int print_clock_conf (void) { DECLARE_GLOBAL_DATA_PTR; - + printf("Clock configuration:\n"); printf(" Coherent System Bus: %4d MHz\n",gd->csb_clk/1000000); printf(" Core: %4d MHz\n",gd->core_clk/1000000); @@ -353,7 +351,7 @@ int print_clock_conf (void) printf(" TSEC2: %4d MHz\n",gd->tsec2_clk/1000000); printf(" USB MPH: %4d MHz\n",gd->usbmph_clk/1000000); printf(" USB DR: %4d MHz\n",gd->usbdr_clk/1000000); - + #if 0 DECLARE_GLOBAL_DATA_PTR; @@ -419,6 +417,5 @@ int print_clock_conf (void) } putc ('\n'); #endif - return (0); + return 0; } - |