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| author | John Rigby <jrigby@freescale.com> | 2008-02-26 09:38:14 -0700 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-03-02 21:44:59 +0100 |
| commit | 5f91db7f582ca17b1f19f10189c025696f333d2e (patch) | |
| tree | 2a5bbb89342615e82ee47312d3e00641632a26ed /cpu/mpc512x/speed.c | |
| parent | 44b4dbed4133f657705b7c5193209da9978243a7 (diff) | |
| download | u-boot-imx-5f91db7f582ca17b1f19f10189c025696f333d2e.zip u-boot-imx-5f91db7f582ca17b1f19f10189c025696f333d2e.tar.gz u-boot-imx-5f91db7f582ca17b1f19f10189c025696f333d2e.tar.bz2 | |
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>
Diffstat (limited to 'cpu/mpc512x/speed.c')
| -rw-r--r-- | cpu/mpc512x/speed.c | 21 |
1 files changed, 16 insertions, 5 deletions
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 @@ int get_clocks (void) 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 @@ int get_clocks (void) /* 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 @@ ulong get_bus_freq (ulong dummy) 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; } |