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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 20:39:40 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 20:39:40 -0500
commit06792c4dde2ad143928cc95c1ba218c6269c494b (patch)
tree92bdd4631612c9e3d8e5f6f06839f75c5473300a /Documentation/devicetree/bindings/c6x/clocks.txt
parent4690dfa8cd66c37fbe99bb8cd5baa86102110776 (diff)
parent166c0eaedfc3157dc1394c27e827add19f05fb27 (diff)
Merge tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
* tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming: (29 commits) C6X: replace tick_nohz_stop/restart_sched_tick calls C6X: add register_cpu call C6X: deal with memblock API changes C6X: fix timer64 initialization C6X: fix layout of EMIFA registers C6X: MAINTAINERS C6X: DSCR - Device State Configuration Registers C6X: EMIF - External Memory Interface C6X: general SoC support C6X: library code C6X: headers C6X: ptrace support C6X: loadable module support C6X: cache control C6X: clocks C6X: build infrastructure C6X: syscalls C6X: interrupt handling C6X: time management C6X: signal management ...
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1C6X PLL Clock Controllers
2-------------------------
3
4This is a first-cut support for the SoC clock controllers. This is still
5under development and will probably change as the common device tree
6clock support is added to the kernel.
7
8Required properties:
9
10- compatible: "ti,c64x+pll"
11 May also have SoC-specific value to support SoC-specific initialization
12 in the driver. One of:
13 "ti,c6455-pll"
14 "ti,c6457-pll"
15 "ti,c6472-pll"
16 "ti,c6474-pll"
17
18- reg: base address and size of register area
19- clock-frequency: input clock frequency in hz
20
21
22Optional properties:
23
24- ti,c64x+pll-bypass-delay: CPU cycles to delay when entering bypass mode
25
26- ti,c64x+pll-reset-delay: CPU cycles to delay after PLL reset
27
28- ti,c64x+pll-lock-delay: CPU cycles to delay after PLL frequency change
29
30Example:
31
32 clock-controller@29a0000 {
33 compatible = "ti,c6472-pll", "ti,c64x+pll";
34 reg = <0x029a0000 0x200>;
35 clock-frequency = <25000000>;
36
37 ti,c64x+pll-bypass-delay = <200>;
38 ti,c64x+pll-reset-delay = <12000>;
39 ti,c64x+pll-lock-delay = <80000>;
40 };