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authorDavid Brown <davidb@codeaurora.org>2011-03-16 22:13:16 -0700
committerDavid Brown <davidb@codeaurora.org>2011-03-16 22:13:16 -0700
commit92c260f755c42337c550d8ac1f8ccd1b32bffb20 (patch)
tree6d04fefc1adeecabfb2b00c201e0db78fa2b5529 /Documentation/devicetree/bindings/powerpc/4xx/cpm.txt
parent8e76a80960bf06c245160a484d5a363ca6b520bb (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ... Conflicts: arch/arm/mach-msm/board-msm7x27.c arch/arm/mach-msm/board-msm7x30.c arch/arm/mach-msm/board-qsd8x50.c arch/arm/mach-msm/board-sapphire.c arch/arm/mach-msm/include/mach/memory.h
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+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>;
+};