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| author | Timur Tabi <timur@freescale.com> | 2008-01-09 17:35:05 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-01-23 19:34:10 -0600 |
| commit | 845cf505cebd159b57b3ae3b25e9ad0eb036f9ab (patch) | |
| tree | aaeb813efa4299bff6b6ea80e302d50b8777febd /Documentation/powerpc | |
| parent | bc556ba940085e46e0ab1b5ed7c31428dc86dd03 (diff) | |
| download | lwn-845cf505cebd159b57b3ae3b25e9ad0eb036f9ab.tar.gz lwn-845cf505cebd159b57b3ae3b25e9ad0eb036f9ab.zip | |
[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.txt | 9 |
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 |