linux/arch/arm
Lennert Buytenhek e4fe19819e [PATCH] ARM: 2701/1: free up ixp2000 timer 4 for the watchdog
Patch from Lennert Buytenhek

The IXP2000 has four timers, but if we're on an A-step IXP2800, timer
2 and 3 don't work.  We need two timers for timekeeping (one for the
timer interrupt and one for tracking missed jiffies), so on early
IXP2800s we have no other choice but to use timer 1 and 4 for that,
but on all other IXP2000s we'd rather leave timer 4 free since that's
the only timer we can use for the watchdog.
So, on buggy IXP2000s (i.e. the A-step IXP2800) we use timer 4 for
tracking missed jiffies, and on all all non-buggy IXP2000s (i.e.
everything but the A-step IXP2800) we use timer 2.
On a pre-production IXP2800, this patch should print these messages
on boot:
	Enabling IXP2800 erratum #25 workaround
	Unable to use IXP2000 watchdog due to IXP2800 erratum #25
On any non-buggy IXP2800 (as well as on IXP2400s) you shouldn't see
anything at all, and the watchdog should be usable again.

Signed-off-by: Lennert Buytenhek
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-20 18:51:07 +01:00
..
boot [PATCH] ARM: 2700/1: Disable IXP2000 IRQs at bootup 2005-06-03 22:18:52 +01:00
common [PATCH] ARM: Add missed include for dmabounce.c 2005-06-20 16:56:08 +01:00
configs [PATCH] ARM: 2708/1: Fix hackkit CPU Frequency build faliure 2005-06-09 21:59:22 +01:00
kernel [PATCH] ARM: Remove obsolete arch/arm/kernel/arch.c 2005-06-20 12:56:40 +01:00
lib [PATCH] ARM: Lindent GCC helper functions 2005-06-20 16:45:32 +01:00
mach-aaec2000 [PATCH] ARM: 2686/2: AAEC-2000 Core support 2005-06-20 18:51:05 +01:00
mach-clps711x [PATCH] ARM: select PCI, ISA and ISA_DMA 2005-05-05 14:49:01 +01:00
mach-clps7500 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ebsa110 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-epxa10db Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-footbridge [PATCH] ARM: select PCI, ISA and ISA_DMA 2005-05-05 14:49:01 +01:00
mach-h720x Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-imx [PATCH] ARM: select PCI, ISA and ISA_DMA 2005-05-05 14:49:01 +01:00
mach-integrator [PATCH] ARM: Remove nmi_tick() from Integrator. 2005-06-20 16:57:17 +01:00
mach-iop3xx Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-ixp4xx [PATCH] PCI: drivers/pci/pci.c: remove pci_dac_set_dma_mask 2005-05-03 23:45:17 -07:00
mach-ixp2000 [PATCH] ARM: 2701/1: free up ixp2000 timer 4 for the watchdog 2005-06-20 18:51:07 +01:00
mach-l7200 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-lh7a40x Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-omap Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-pxa [PATCH] ARM SMP: Fix PXA/SA11x0 suspend resume crash 2005-06-19 18:39:33 +01:00
mach-rpc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-s3c2410 [PATCH] ARM: 2694/1: [s3c2410/dma] release irq properly to fix kernel oops 2005-06-03 20:52:26 +01:00
mach-sa1100 [PATCH] ARM SMP: Fix PXA/SA11x0 suspend resume crash 2005-06-19 18:39:33 +01:00
mach-shark Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mach-versatile [PATCH] ARM: 2693/1: Add PCI support for Versatile/PB 2005-06-20 18:51:06 +01:00
mm [PATCH] ARM: 2686/2: AAEC-2000 Core support 2005-06-20 18:51:05 +01:00
nwfpe Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
oprofile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tools Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfp Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig [PATCH] ARM: 2693/1: Add PCI support for Versatile/PB 2005-06-20 18:51:06 +01:00
Kconfig.debug Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] ARM: 2686/2: AAEC-2000 Core support 2005-06-20 18:51:05 +01:00