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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2013-08-13 11:43:14 -0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2013-09-02 21:44:06 +0200 |
| commit | 8ad31e66c150aeb44927b44bfb1ce7a3e23ec463 (patch) | |
| tree | f6b19e94e61687642e41fed0af07908c827b5fa5 /Documentation | |
| parent | 7cd6392c9bf5da6986103fcf5ca1b6fd0489d9b4 (diff) | |
| download | linux-8ad31e66c150aeb44927b44bfb1ce7a3e23ec463.tar.gz linux-8ad31e66c150aeb44927b44bfb1ce7a3e23ec463.tar.bz2 linux-8ad31e66c150aeb44927b44bfb1ce7a3e23ec463.zip | |
clocksource: armada-370-xp: Fix device-tree binding
This commit fixes the DT binding for the Armada 370/XP SoC timer.
The previous "marvell,armada-370-xp-timer" compatible is removed and
two new compatible strings are introduced: "marvell,armada-xp-timer"
and "marvell,armada-370-timer".
The rationale behind this change is that the Armada 370 SoC and the
Armada XP SoC timers are not really compatible:
* Armada 370 has no 25 MHz fixed timer.
* Armada XP cannot work properly without such 25 MHz fixed timer
as doing otherwise leads to using a clocksource whose frequency
varies when doing cpufreq frequency changes.
This commit also removes the "marvell,timer-25Mhz" property, given
it's now meaningless.
Cc: devicetree@vger.kernel.org
Acked-by: Jason Cooper <jason@lakedaemon.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt b/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt index 36381129d141..4c453b22b2b4 100644 --- a/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt +++ b/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt @@ -2,14 +2,31 @@ Marvell Armada 370 and Armada XP Timers --------------------------------------- Required properties: -- compatible: Should be "marvell,armada-370-xp-timer" +- compatible: Should be either "marvell,armada-370-timer" or + "marvell,armada-xp-timer" as appropriate. - interrupts: Should contain the list of Global Timer interrupts and then local timer interrupts - reg: Should contain location and length for timers register. First pair for the Global Timer registers, second pair for the local/private timers. -- clocks: clock driving the timer hardware +- clocks: clock driving the timer hardware, only required for + "marvell,armada-370-timer"; -Optional properties: -- marvell,timer-25Mhz: Tells whether the Global timer supports the 25 - Mhz fixed mode (available on Armada XP and not on Armada 370) +Examples: + +- Armada 370: + + timer { + compatible = "marvell,armada-370-timer"; + reg = <0x20300 0x30>, <0x21040 0x30>; + interrupts = <37>, <38>, <39>, <40>, <5>, <6>; + clocks = <&coreclk 2>; + }; + +- Armada XP: + + timer { + compatible = "marvell,armada-xp-timer"; + reg = <0x20300 0x30>, <0x21040 0x30>; + interrupts = <37>, <38>, <39>, <40>, <5>, <6>; + }; |