linux.git/arch/powerpc, branch v2.6.25

[POWERPC] Fix MPC5200 (not B!) device tree so FEC ethernet works

2008-04-03T11:11:12+00:00

This gets the FEC ethernet driver working again on the lite5200
platform.

The FEC driver is also compatible with the MPC5200, not only with the
MPC5200B, so this adds a suitable entry to the driver's match list.
Furthermore this adds the settings for the PHY in the dts file for the
Lite5200.  Note, that this is not exactly the same as in the
Lite5200B, because the PHY is located at f0003000:01 for the 5200, and
at :00 for the 5200B.  This was tested on a Lite5200 and a Lite5200B,
both booted a kernel via tftp and mounted the root via nfs
successfully.

Signed-off-by: René Bürgel 
Acked-by: Grant Likely 
Signed-off-by: Paul Mackerras

[POWERPC] mpc5200: Amalgamated DTS fixes and updates

2008-04-03T11:11:12+00:00

DTS updates that fix booting problems on mpc5200-based boards:
- change to ethernet reg property
- addition of mdio and phy nodes
- removal of pci node (Motion-Pro board)

Other DTS updates:
- update i2c device tree nodes
- add lpb bus node and flash device (without partitions defined)
- add rtc i2c nodes

Signed-off-by: Marian Balakowicz 
Acked-by: Grant Likely 
Signed-off-by: Paul Mackerras

[POWERPC] Fix rtas_flash procfs interface

2008-04-03T11:11:11+00:00

Handling of the proc_dir_entry->count was changed in 2.6.24-rc5.
After this change, the default value for pde->count is 1 and not 0 as
before.  Therefore, if we want to check whether our procfs file is
already opened (already in use), we have to check if pde->count is
greater than 2 rather than 1.

Signed-off-by: Maxim Shchetynin 
Signed-off-by: Jens Osterkamp 
Signed-off-by: Paul Mackerras

[POWERPC] Fix deadlock with mmu_hash_lock in hash_page_sync

2008-04-03T11:11:11+00:00

hash_page_sync() takes and releases the low level mmu hash
lock in order to sync with other processors disposing of page
tables.  Because that lock can be needed to service hash misses
triggered by interrupt handlers, taking it must be done with
interrupts off.  However, hash_page_sync() appears to be called
with interrupts enabled, thus causing occasional deadlocks.

We fix it by making sure hash_page_sync() masks interrupts while
holding the lock.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[POWERPC] Fix iSeries hard irq enabling regression

2008-04-03T11:10:34+00:00

A subtle bug sneaked into iSeries recently.  On this platform, we must
not normally clear MSR:EE (the hardware external interrupt enable)
except for short periods of time.  Taking an interrupt while
soft-disabled doesn't cause us to clear it for example.

The iSeries kernel expects to mostly run with MSR:EE enabled at all
times except in a few exception entry/exit code paths.  Thus
local_irq_enable() doesn't check if it needs to hard-enable as it
expects this to be unnecessary on iSeries.

However, hard_irq_disable() _does_ cause MSR:EE to be cleared,
including on iSeries.  A call to it was recently added to the
context switch code, thus causing interrupts to become disabled
for a long periods of time, causing the iSeries watchdog to kick
in under some circumstances and other nasty things.

This patch fixes it by making local_irq_enable() properly re-enable
MSR:EE on iSeries.  It basically removes a return statement here
to make iSeries use the same code path as everybody else.  That does
mean that we might occasionally get spurious decrementer interrupts
but I don't think that matters.

Another option would have been to make hard_irq_disable() a nop
on iSeries but I didn't like it much, in case we have good reasons
to hard-disable.

Part of the patch is fixes to make sure the hard_enabled PACA field
is properly set on iSeries as it used not to be before, since it
was mostly unused.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[POWERPC] Fix CPM2 SCC1 clock initialization.

2008-04-03T06:31:59+00:00

A missing break statement in a switch caused cpm2_clk_setup() to initialize
SCC2 instead of SCC1.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Kumar Gala

[POWERPC] Fix defconfigs so we dont set both GENRTC and RTCLIB

2008-03-31T16:53:46+00:00

The new rtc subsystem conflicts with genrtc so don't enable GENRTC
if RTCLIB is enabled.

Signed-off-by: Kumar Gala

[POWERPC] sata_fsl: reduce compatibility to fsl,pq-sata

2008-03-31T15:27:35+00:00

as prescribed in Documentation/powerpc/booting-without-of.txt.

Signed-off-by: Kim Phillips 
Acked-by: Jeff Garzik 
Signed-off-by: Kumar Gala

[POWERPC] 83xx: enable usb in 837x rdb and 83xx defconfigs

2008-03-31T15:26:22+00:00

Signed-off-by: Kim Phillips 
Signed-off-by: Kumar Gala

[POWERPC] 83xx: Fix wrong USB phy type in mpc837xrdb dts

2008-03-31T15:23:48+00:00

Due to chip constraint MPC837x USB DR module can only use
ULPI and serial PHY interfaces.  The patch fixes the wrong
type in dts.

This patch fixes USB malfunctioning on the MPC837xE-RDB boards.

Similar patch has been already applied for the MDS boards:

  commit 28b958859206b7010d03129611c2e444898e3ee4
  Author: Li Yang 
  Date:   Thu Mar 6 18:42:26 2008 +0800

      [POWERPC] 83xx: Fix wrong USB phy type in mpc837xmds dts

Signed-off-by: Anton Vorontsov 
Signed-off-by: Kim Phillips 
Signed-off-by: Kumar Gala