MPC5121e ADS PCI support take 3
Adds PCI support for MPC5121
Tested with drivers/net/rtl8139.c
Support is conditional since PCI on old silicon does not work.
ads5121_PCI_config turns on PCI
In this version, condition compilation of PCI code has been moved
from ifdef in board/ads5121/pci.c to board/ads5121/Makefile as
suggested by Jean-Christophe PLAGNIOL-VILLARD
Signed-off-by: John Rigby <jrigby@freescale.com>
diff --git a/cpu/mpc512x/speed.c b/cpu/mpc512x/speed.c
index 99e3495..cfaffb5 100644
--- a/cpu/mpc512x/speed.c
+++ b/cpu/mpc512x/speed.c
@@ -67,12 +67,14 @@
u8 cpmf;
u8 sys_div;
u8 ips_div;
+ u8 pci_div;
u32 ref_clk = CFG_MPC512X_CLKIN;
u32 spll;
u32 sys_clk;
u32 core_clk;
u32 csb_clk;
u32 ips_clk;
+ u32 pci_clk;
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
return -1;
@@ -95,8 +97,16 @@
/* in case we cannot get a sane IPS divisor, fail gracefully */
ips_clk = 0;
}
+ pci_div = (im->clk.scfr[0] & SCFR1_PCI_DIV_MASK) >> SCFR1_PCI_DIV_SHIFT;
+ if (pci_div != 0) {
+ pci_clk = csb_clk / pci_div;
+ } else {
+ /* in case we cannot get a sane IPS divisor, fail gracefully */
+ pci_clk = 333333;
+ }
gd->ips_clk = ips_clk;
+ gd->pci_clk = pci_clk;
gd->csb_clk = csb_clk;
gd->cpu_clk = core_clk;
gd->bus_clk = csb_clk;
@@ -115,11 +125,12 @@
int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
- printf ("Clock configuration:\n");
- printf (" CPU: %4d MHz\n", gd->cpu_clk / 1000000);
- printf (" Coherent System Bus: %4d MHz\n", gd->csb_clk / 1000000);
- printf (" IPS Bus: %4d MHz\n", gd->ips_clk / 1000000);
- printf (" DDR: %4d MHz\n", 2 * gd->csb_clk / 1000000);
+ printf("Clock configuration:\n");
+ printf(" CPU: %4d MHz\n", gd->cpu_clk / 1000000);
+ printf(" Coherent System Bus: %4d MHz\n", gd->csb_clk / 1000000);
+ printf(" IPS Bus: %4d MHz\n", gd->ips_clk / 1000000);
+ printf(" PCI: %4d MHz\n", gd->pci_clk / 1000000);
+ printf(" DDR: %4d MHz\n", 2 * gd->csb_clk / 1000000);
return 0;
}