Re: R: Installation on a MPC5200 based custom board
Ok .
=
Case arch = powerpc
I saw that cdm is modified in two fields.
arch/powerpc/platforms/mpc52xx_common.c file, in function:
mpc52xx_setup_cpu(void)
.
/* Use internal 48 Mhz */
out_8(&cdm->ext_48mhz_en, 0x00);
out_8(&cdm->fd_enable, 0x01);
if (in_be32(&cdm->rstcfg) & 0x40) /* Assumes 33Mhz clock */
out_be16(&cdm->fd_counters, 0x0001);
else
out_be16(&cdm->fd_counters, 0x);
.
and in file arch/powerpc/platforms/52xx/lite5200.c , function:
void __init lite5200_calibrate_decr(void)
{
ppc_tb_freq = 0x1F78A40; /* hardcoded default */
/* CPU FREQUENCY FORCED TO 396 MHz VALUE */
ppc_proc_freq = 0x179A7B00; /* hardcoded default */
..
=
Case arch = ppc
The code is equal but obviously the path change
(arch/ppc/syslib/mpc52xx_setup.c). Funtion: mpc52xx_setup_cpu(void)
.
/* Use internal 48 Mhz */
out_8(&cdm->ext_48mhz_en, 0x00);
out_8(&cdm->fd_enable, 0x01);
if (in_be32(&cdm->rstcfg) & 0x40) /* Assumes 33Mhz clock */
out_be16(&cdm->fd_counters, 0x0001);
else
out_be16(&cdm->fd_counters, 0x);
.
And in function: mpc52xx_calibrate_decr(void)
.
xlbfreq = __res.bi_busfreq;
/* if bootloader didn't pass bus frequencies, calculate them */
if (xlbfreq == 0) {
...
/* Compute all frequency from that & CDM settings */
xlbfreq = (tbl_end - tbl_start) << 8;
cpufreq = (xlbfreq * core_mult[in_be32(&cdm->rstcfg)&0x1f])/10;
ipbfreq = (in_8(&cdm->ipb_clk_sel) & 1) ?
xlbfreq / 2 : xlbfreq;
switch (in_8(&cdm->pci_clk_sel) & 3) {
case 0:
pcifreq = ipbfreq;
break;
case 1:
pcifreq = ipbfreq / 2;
break;
default:
pcifreq = xlbfreq / 4;
break;
}
.
=
What do you think about this?
Thanks in advance,
@ngel
--- Ven 5/12/08, Jon Smirl <[EMAIL PROTECTED]> ha scritto:
Da: Jon Smirl <[EMAIL PROTECTED]>
Oggetto: Re: R: Installation on a MPC5200 based custom board
A: "Juergen Beisert" <[EMAIL PROTECTED]>
Cc: linuxppc-dev@ozlabs.org, [EMAIL PROTECTED], "Gary Thomas" <[EMAIL
PROTECTED]>, [EMAIL PROTECTED]
Data: Venerdì 5 dicembre 2008, 20:33
The attachment is from Freescale and shows how the divider works.
--
Jon Smirl
[EMAIL PROTECTED]
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Re: R: Installation on a MPC5200 based custom board
The attachment is from Freescale and shows how the divider works. -- Jon Smirl [EMAIL PROTECTED] fractinal_div.pdf Description: Adobe PDF document ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
Re: R: Installation on a MPC5200 based custom board
On Freitag, 5. Dezember 2008, [EMAIL PROTECTED] wrote: > > > Now plugging-in USB: > > > > [EMAIL PROTECTED]: ~ #[ 17.228078] hub 1-0:1.0: state 7 ports 2 chg evt > 0004 [EMAIL PROTECTED]: ~ #[ 17.233798] ppc-of-ohci f0001000.usb: GetStatus > roothub.portstatus [1] = 0x00010101 CSC PPS CCS [EMAIL PROTECTED]: ~ #[ > 17.242776] hub 1-0:1.0: port 2, status 0101, change 0001, 12 Mb/s > [EMAIL PROTECTED]: ~ #[ 17.374796] hub 1-0:1.0: debounce: port 2: total > 100ms > stable 100ms status 0x101 [EMAIL PROTECTED]: ~ #[ 17.450780] ppc-of-ohci > f0001000.usb: GetStatus roothub.portstatus [1] = 0x00100103 PRSC PPS PES > CCS [EMAIL PROTECTED]: ~ #[ 17.514787] usb 1-2: new full speed USB device > using ppc-of-ohci and address 2 [EMAIL PROTECTED]: ~ #[ 24.027842] usb 1-2: > khubd timed out on ep0in len=0/64 [EMAIL PROTECTED]: ~ #[ 29.199841] usb > 1-2: > khubd timed out on ep0in len=0/64 [EMAIL PROTECTED]: ~ #[ 34.307841] usb > 1-2: > khubd timed out on ep0in len=0/64 [EMAIL PROTECTED]: ~ #[ 34.382786] > ppc-of-ohci f0001000.usb: GetStatus roothub.portstatus [1] = 0x00100103 > PRSC PPS PES CCS [EMAIL PROTECTED]: ~ #[ 34.446789] usb 1-2: device > descriptor read/64, error -110 [EMAIL PROTECTED]: ~ # > [EMAIL PROTECTED]: ~ #cat /proc/interrupts >CPU0 > 134: 5689 MPC52xx Peripherals Edge ohci_hcd:usb1 > 139:207 MPC52xx Peripherals Edge mpc52xx_psc_uart > 143: 0 MPC52xx Peripherals Edge i2c-mpc > 144: 0 MPC52xx Peripherals Edge i2c-mpc > BAD: 0 > [EMAIL PROTECTED]: ~ # > > > > we were thinking to some problem like: > > http://www.nabble.com/USB-support-on-mpc5200-broken-td19658810.html > > or > > http://www.nabble.com/MPC5200-PCI-interrupt-routing-p19608472.html Sounds like a wrong or missed clock configuration. Is your "CDM 48 MHz Fractional Divider Configuration Register Field Descriptions (0x0210)" setup correctly? Some kernel revisions guesses and fixes the setting, some other not. Regards, Juergen -- Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Vertretung Sued/Muenchen, Germany Phone: +49-8766-939 228 | Fax: +49-5121-206917- ___ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
