diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2011-01-26 10:10:40 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-01-31 00:09:01 -0700 |
| commit | d524dac9279b6a41ffdf7ff7958c577f2e387db6 (patch) | |
| tree | 294166d18a1c89c4cebb2571ea7b124876fb01ef /Documentation/powerpc/dts-bindings/4xx/cpm.txt | |
| parent | 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5 (diff) | |
dt: Move device tree documentation out of powerpc directory
The device tree is used by more than just PowerPC. Make the documentation
directory available to all.
v2: reorganized files while moving to create arch and driver specific
directories.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/powerpc/dts-bindings/4xx/cpm.txt')
| -rw-r--r-- | Documentation/powerpc/dts-bindings/4xx/cpm.txt | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/Documentation/powerpc/dts-bindings/4xx/cpm.txt b/Documentation/powerpc/dts-bindings/4xx/cpm.txt deleted file mode 100644 index ee459806d35e..000000000000 --- a/Documentation/powerpc/dts-bindings/4xx/cpm.txt +++ /dev/null @@ -1,52 +0,0 @@ -PPC4xx Clock Power Management (CPM) node - -Required properties: - - compatible : compatible list, currently only "ibm,cpm" - - dcr-access-method : "native" - - dcr-reg : < DCR register range > - -Optional properties: - - er-offset : All 4xx SoCs with a CPM controller have - one of two different order for the CPM - registers. Some have the CPM registers - in the following order (ER,FR,SR). The - others have them in the following order - (SR,ER,FR). For the second case set - er-offset = <1>. - - unused-units : specifier consist of one cell. For each - bit in the cell, the corresponding bit - in CPM will be set to turn off unused - devices. - - idle-doze : specifier consist of one cell. For each - bit in the cell, the corresponding bit - in CPM will be set to turn off unused - devices. This is usually just CPM[CPU]. - - standby : specifier consist of one cell. For each - bit in the cell, the corresponding bit - in CPM will be set on standby and - restored on resume. - - suspend : specifier consist of one cell. For each - bit in the cell, the corresponding bit - in CPM will be set on suspend (mem) and - restored on resume. Note, for standby - and suspend the corresponding bits can - be different or the same. Usually for - standby only class 2 and 3 units are set. - However, the interface does not care. - If they are the same, the additional - power saving will be seeing if support - is available to put the DDR in self - refresh mode and any additional power - saving techniques for the specific SoC. - -Example: - CPM0: cpm { - compatible = "ibm,cpm"; - dcr-access-method = "native"; - dcr-reg = <0x160 0x003>; - er-offset = <0>; - unused-units = <0x00000100>; - idle-doze = <0x02000000>; - standby = <0xfeff0000>; - suspend = <0xfeff791d>; -}; |