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authorTimur Tabi <timur@freescale.com>2008-01-10 02:35:05 +0300
committerKumar Gala <galak@kernel.crashing.org>2008-01-24 04:34:10 +0300
commit845cf505cebd159b57b3ae3b25e9ad0eb036f9ab (patch)
treeaaeb813efa4299bff6b6ea80e302d50b8777febd /Documentation/powerpc
parentbc556ba940085e46e0ab1b5ed7c31428dc86dd03 (diff)
downloadlinux-845cf505cebd159b57b3ae3b25e9ad0eb036f9ab.tar.xz
[POWERPC] QE: Add support for Freescale QUICCEngine UART
Add support for UART serial ports using a Freescale QUICCEngine. Update booting-without-of.txt to define new properties for a QE UART node. Update the MPC8323E-MDS device tree to add UCC5 as a UART. Update the QE library to support slow UCC devices and modules. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'Documentation/powerpc')
-rw-r--r--Documentation/powerpc/booting-without-of.txt9
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index e8c67c9015b3..a13d4578319c 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1619,7 +1619,7 @@ platforms are moved over to use the flattened-device-tree model.
Required properties:
- device_type : should be "network", "hldc", "uart", "transparent"
- "bisync" or "atm".
+ "bisync", "atm", or "serial".
- compatible : could be "ucc_geth" or "fsl_atm" and so on.
- model : should be "UCC".
- device-id : the ucc number(1-8), corresponding to UCCx in UM.
@@ -1632,6 +1632,13 @@ platforms are moved over to use the flattened-device-tree model.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
- pio-handle : The phandle for the Parallel I/O port configuration.
+ - port-number : for UART drivers, the port number to use, between 0 and 3.
+ This usually corresponds to the /dev/ttyQE device, e.g. <0> = /dev/ttyQE0.
+ The port number is added to the minor number of the device. Unlike the
+ CPM UART driver, the port-number is required for the QE UART driver.
+ - soft-uart : for UART drivers, if specified this means the QE UART device
+ driver should use "Soft-UART" mode, which is needed on some SOCs that have
+ broken UART hardware. Soft-UART is provided via a microcode upload.
- rx-clock-name: the UCC receive clock source
"none": clock source is disabled
"brg1" through "brg16": clock source is BRG1-BRG16, respectively