71 lines
2.6 KiB
Diff
71 lines
2.6 KiB
Diff
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From ba47ab198541f6ed822b3c9691b392d83edba8b4 Mon Sep 17 00:00:00 2001
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From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
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Date: Tue, 13 Aug 2013 11:43:14 -0300
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Subject: [PATCH 193/203] clocksource: armada-370-xp: Fix device-tree binding
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This commit fixes the DT binding for the Armada 370/XP SoC timer.
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The previous "marvell,armada-370-xp-timer" compatible is removed and
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two new compatible strings are introduced: "marvell,armada-xp-timer"
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and "marvell,armada-370-timer".
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The rationale behind this change is that the Armada 370 SoC and the
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Armada XP SoC timers are not really compatible:
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* Armada 370 has no 25 MHz fixed timer.
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* Armada XP cannot work properly without such 25 MHz fixed timer
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as doing otherwise leads to using a clocksource whose frequency
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varies when doing cpufreq frequency changes.
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This commit also removes the "marvell,timer-25Mhz" property, given
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it's now meaningless.
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Cc: devicetree@vger.kernel.org
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Acked-by: Jason Cooper <jason@lakedaemon.net>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
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Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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---
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.../bindings/timer/marvell,armada-370-xp-timer.txt | 27 ++++++++++++++++++----
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1 file changed, 22 insertions(+), 5 deletions(-)
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--- a/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
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+++ b/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
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@@ -2,14 +2,31 @@ Marvell Armada 370 and Armada XP Timers
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---------------------------------------
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Required properties:
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-- compatible: Should be "marvell,armada-370-xp-timer"
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+- compatible: Should be either "marvell,armada-370-timer" or
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+ "marvell,armada-xp-timer" as appropriate.
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- interrupts: Should contain the list of Global Timer interrupts and
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then local timer interrupts
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- reg: Should contain location and length for timers register. First
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pair for the Global Timer registers, second pair for the
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local/private timers.
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-- clocks: clock driving the timer hardware
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+- clocks: clock driving the timer hardware, only required for
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+ "marvell,armada-370-timer";
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-Optional properties:
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-- marvell,timer-25Mhz: Tells whether the Global timer supports the 25
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- Mhz fixed mode (available on Armada XP and not on Armada 370)
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+Examples:
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+
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+- Armada 370:
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+
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+ timer {
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+ compatible = "marvell,armada-370-timer";
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+ reg = <0x20300 0x30>, <0x21040 0x30>;
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+ interrupts = <37>, <38>, <39>, <40>, <5>, <6>;
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+ clocks = <&coreclk 2>;
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+ };
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+
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+- Armada XP:
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+
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+ timer {
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+ compatible = "marvell,armada-xp-timer";
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+ reg = <0x20300 0x30>, <0x21040 0x30>;
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+ interrupts = <37>, <38>, <39>, <40>, <5>, <6>;
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+ };
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