Thread (5 messages) 5 messages, 3 authors, 2004-06-22

Re: WindRiver PowerQUICC III SBC8560 support.

From: David Woodhouse <dwmw2@infradead.org>
Date: 2004-06-21 14:14:46

On Fri, 2004-06-18 at 08:40 -0500, Kumar Gala wrote:
A few comments (they are inline with the patch):
Thanks for the feedback.
Remove FEC, does not exist on 8560
Remove ref for ENET3/FEC does not exist on 8560
Fix file name comments
Done.
Do you use the pci_config_addr define?
No; removed.
Can you use mpc85xx_calibrate_decr instead of creating your own?
Actually I think I already was. So I removed the sbc82xx one :)
Can you use the mpc85xx_find_end_of_memory
Yes; done.
I've moved to not using _map_io at all.  This has to due with eating up
large parts of virtual addr space, you may want to think about it.
Er, on closer inspection I wasn't using it either. Killed.
Can you use mpc85xx_restart, mpc85xx_halt, mpc85xx_power_off?
Yes; done.
Is map_irq correct for your board?
No, it was a pile of crap. There was a 'sbc85xx_map_irq' but we weren't
using that. Fixed (albeit untested because I still haven't installed a
u-boot which actually manages to start up when there's a 33MHz PCI card
present and hence the clocks are halved.
Fixup file comments
Done.
IMAP_ADDR?  should this be CPM_MAP_ADDR? or is this just old?
Just old. Gone.
Remove if you use mpc85xx_ versions
Done.
PCI1... should be in syslib/ppc85xx_setup.h
And indeed they are. Removed.
quoted
--- a/arch/ppc/syslib/ppc85xx_setup.c	2004-06-18 13:49:42 +01:00
+++ b/arch/ppc/syslib/ppc85xx_setup.c	2004-06-18 13:49:42 +01:00
Was this needed?
quoted
+#include <syslib/ppc85xx_setup.h>
Yes. Without it we don't get PCIX_COMMAND defined. On MPC85xx the file
gets pulled in via platforms/85xx/mpc8540_ads.h, but we don't need it in
platforms/85xx/sbc8560.h so we don't include it there. ppc85xx_setup.c
should be including it directly if it needs it.

Actually PCIX_COMMAND should probably be in include/linux/pci.h.
Was this necessary?  I havent looked into it, but this seems to work ok
on ADS boards?
quoted
-#define BASE_BAUD 0
+#ifndef BASE_BAUD
+#define BASE_BAUD 115200
+#endif
On the ADS boards, mpc85xx_early_serial_map() sets serial_req.uartclk to
binfo->bi_busfreq; the BASE_BAUD #define isn't actually relevant so it
doesn't matter that it's broken.

On SBC8560 we use external 16550s, and it matters.

Actually, I think we should leave SERIAL_PORT_DFNS empty and use
early_serial_setup() exclusively. I'd have done that but gen550_dbg.c
doesn't use baud_base when gen550_init() is called; it uses whatever's
in its own copy of rs_table.

I'll continue my campaign to abolish rs_table _completely_ on all
architectures another day :)
No, we are moving the block # to be start on 1, fixup any code that
needs MPC85xx_IIC0_OFFSET to use MPC85xx_IIC1_OFFSET
quoted
+#define MPC85xx_IIC0_OFFSET	(0x05000)
+#define MPC85xx_IIC0_SIZE	(0x01000)
 #define MPC85xx_IIC1_OFFSET	(0x03000)
 #define MPC85xx_IIC1_SIZE	(0x01000)
Er, actually on closer inspection the 8260 I2C is at 0x3000 too; I don't
know where I got the address 0x5000 from, but I had assumed it was
_meant_ to be different from the 8540 version. Fixed.
Make these changes and resend, I'll take a look and then push up to
akpm.
bk://linux-mtd.bkbits.net/sbc85xx-2.6 and in particular
http://linux-mtd.bkbits.net:8080/sbc85xx-2.6/gnupatch@40d6ea31zS1PDbPn2x0iwemApPGBBA

--
dwmw2


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