[PATCH v3 1/5] clocksource/drivers/timer-mediatek: Add system timer bindings
From: Stanley Chu <hidden>
Date: 2018-06-28 10:47:18
Also in:
linux-devicetree, lkml
Subsystem:
clocksource, clockevent drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Daniel Lezcano, Thomas Gleixner, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This patch fixes bindings of existed "General Purpose Timer", and then add bindings of new "System Timer" on Mediatek SoCs. Signed-off-by: Stanley Chu <stanley.chu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> --- .../bindings/timer/mediatek,mtk-timer.txt | 38 ++++++++++++++++---- 1 file changed, 32 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
index b1fe7e9..d42247b 100644
--- a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
+++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt@@ -1,5 +1,14 @@ -Mediatek MT6577, MT6572 and MT6589 Timers ---------------------------------------- +Mediatek Timers +--------------- + +Mediatek SoCs have two different timers on different platforms, +- GPT (General Purpose Timer) +- SYST (System Timer) + +Please bind correct timers in each platforms. + + +** General Purpose Timer (GPT) Required properties: - compatible should contain:
@@ -11,9 +20,8 @@ Required properties: * "mediatek,mt8135-timer" for MT8135 compatible timers * "mediatek,mt8173-timer" for MT8173 compatible timers * "mediatek,mt6577-timer" for MT6577 and all above compatible timers -- reg: Should contain location and length for timers register. -- clocks: Clocks driving the timer hardware. This list should include two - clocks. The order is system clock and as second clock the RTC clock. +- reg: Should contain location and length for GPT register. +- clocks: GPT is drived by system clock. Examples:
@@ -21,5 +29,23 @@ Examples: compatible = "mediatek,mt6577-timer"; reg = <0x10008000 0x80>; interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>; - clocks = <&system_clk>, <&rtc_clk>; + clocks = <&system_clk>; + }; + + +** System Timer (SYST) + +Required properties: +- compatible: Should contain + * "mediatek,mt6765-systimer" for MT6765 compatible timers +- reg: Should contain the location and length for system timer registers. +- clocks: System timer is drived by system clock. + +Examples: + + systimer@10017000 { + compatible = "mediatek,mt6765-systimer"; + reg = <0 0x10017000 0 0x1000>; + interrupts = <GIC_SPI 194 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&system_clk>; };
--
1.7.9.5