Hi; I am using u-boot-1.1.2 and I am sending this minor patch to the cpu/mpc8260/speed.c file in view of MPC8280EC document which lays down how the PCIDF is calculated but not reflected correctly in the file.

Index: cpu/mpc8260/speed.c =================================================================== RCS file: /usr/cvsroot/u-boot/cpu/mpc8260/speed.c,v retrieving revision 1.2 diff -u -b -B -r1.2 speed.c --- cpu/mpc8260/speed.c 28 Apr 2005 07:01:04 -0000 1.2 +++ cpu/mpc8260/speed.c 16 Jun 2005 04:35:12 -0000 @@ -202,11 +202,12 @@

volatile immap_t *immap = (immap_t *) CFG_IMMR; ulong sccr, dfbrg; - ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf; + ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf, pcidf; corecnf_t *cp;

sccr = immap->im_clkrst.car_sccr; dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT; + pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT;

scmr = immap->im_clkrst.car_scmr; corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT; @@ -243,8 +244,8 @@ cp->vco_div, cp->freq_60x, cp->freq_core);

printf (" - dfbrg %ld, corecnf 0x%02lx, busdf %ld, cpmdf %ld, " - "plldf %ld, pllmf %ld\n", dfbrg, corecnf, busdf, cpmdf, plldf, - pllmf); + "plldf %ld, pllmf %ld, pcidf %ld\n", dfbrg, corecnf, busdf, cpmdf, plldf, + pllmf, pcidf);

printf (" - vco_out %10ld, scc_clk %10ld, brg_clk %10ld\n", gd->vco_out, gd->scc_clk, gd->brg_clk); @@ -253,10 +254,18 @@ gd->cpu_clk, gd->cpm_clk, gd->bus_clk);

if (sccr & SCCR_PCI_MODE) { - uint pci_div; + uint pci_div, pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT;

- pci_div = ( (sccr & SCCR_PCI_MODCK) ? 2 : 1) * - ( ( (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT) + 1); + if (sccr & SCCR_PCI_MODCK) { + pci_div = 2; + if (pcidf == 9) + pci_div *= 5; + else if (pcidf == 0xB) + pci_div *= 6; + else + pci_div *= (pcidf + 1); + } else + pci_div = pcidf + 1;

printf (" - pci_clk %10ld\n", (gd->cpm_clk * 2) / pci_div); }

Regards, TEH