Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
  [POWERPC] Add memchr() to the bootwrapper
  [POWERPC] Implement logging of unhandled signals
  [POWERPC] Add legacy serial support for OPB with flattened device tree
  [POWERPC] Use 1TB segments
  [POWERPC] XilinxFB: Allow fixed framebuffer base address
  [POWERPC] XilinxFB: Add support for custom screen resolution
  [POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
  [POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
  [POWERPC] 4xx: Kilauea defconfig file
  [POWERPC] 4xx: Kilauea DTS
  [POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
  [POWERPC] 4xx: Add AMCC 405EX support to cputable.c
  [POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
  [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
  [POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
  [POWERPC] 85xx: Killed <asm/mpc85xx.h>
  [POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
  [POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
  [POWERPC] mpc8272ads: Remove muram from the CPM reg property.
  [POWERPC] Make clockevents work on PPC601 processors
  ...

Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 81b52b7cca2..d6ae38e55d0 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -986,6 +986,31 @@ config SERIAL_PMACZILOG
 	  PowerMac machines.
 	  Say Y or M if you want to be able to these serial ports.
 
+config SERIAL_PMACZILOG_TTYS
+	bool "Use ttySn device nodes for Zilog z85c30"
+	depends on SERIAL_PMACZILOG
+	help
+	  The pmac_zilog driver for the z85C30 chip on many powermacs
+	  historically used the device numbers for /dev/ttySn.  The
+	  8250 serial port driver also uses these numbers, which means
+	  the two drivers being unable to coexist; you could not use
+	  both z85C30 and 8250 type ports at the same time.
+
+	  If this option is not selected, the pmac_zilog driver will
+	  use the device numbers allocated for /dev/ttyPZn.  This allows
+	  the pmac_zilog and 8250 drivers to co-exist, but may cause
+	  existing userspace setups to break.  Programs that need to
+	  access the built-in serial ports on powermacs will need to
+	  be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
+
+	  If you enable this option, any z85c30 ports in the system will
+	  be registered as ttyS0 onwards as in the past, and you will be
+	  unable to use the 8250 module for PCMCIA or other 16C550-style
+	  UARTs.
+
+	  Say N unless you need the z85c30 ports on your powermac
+	  to appear as /dev/ttySn.
+
 config SERIAL_PMACZILOG_CONSOLE
 	bool "Console on PowerMac z85c30 serial port"
 	depends on SERIAL_PMACZILOG=y