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authorTimur Tabi <timur@freescale.com>2007-12-03 15:17:58 -0600
committerKumar Gala <galak@kernel.crashing.org>2007-12-13 22:59:27 -0600
commit174b0da23199c4ae1ed06263dafd9a2e85e97d34 (patch)
treeef7e30bbc2b22269e46a08ab17823e5d43e6974f /Documentation/powerpc
parent255b09eb26bc285be5aad5c5606e96093094c41a (diff)
downloadblackbird-op-linux-174b0da23199c4ae1ed06263dafd9a2e85e97d34.tar.gz
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[POWERPC] qe: add function qe_clock_source()
Add function qe_clock_source() which takes a string containing the name of a QE clock source (as is typically found in device trees) and returns the matching enum qe_clock value. Update booting-without-of.txt to indicate that the UCC properties rx-clock and tx-clock are deprecated and replaced with rx-clock-name and tx-clock-name, which use strings instead of numbers to indicate QE clock sources. 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.txt13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index c3fc9d955030..ee0209a7de3e 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1629,6 +1629,19 @@ 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.
+ - rx-clock-name: the UCC receive clock source
+ "none": clock source is disabled
+ "brg1" through "brg16": clock source is BRG1-BRG16, respectively
+ "clk1" through "clk24": clock source is CLK1-CLK24, respectively
+ - tx-clock-name: the UCC transmit clock source
+ "none": clock source is disabled
+ "brg1" through "brg16": clock source is BRG1-BRG16, respectively
+ "clk1" through "clk24": clock source is CLK1-CLK24, respectively
+ The following two properties are deprecated. rx-clock has been replaced
+ with rx-clock-name, and tx-clock has been replaced with tx-clock-name.
+ Drivers that currently use the deprecated properties should continue to
+ do so, in order to support older device trees, but they should be updated
+ to check for the new properties first.
- rx-clock : represents the UCC receive clock source.
0x00 : clock source is disabled;
0x1~0x10 : clock source is BRG1~BRG16 respectively;
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