From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanley Chu Subject: [PATCH v4 1/5] clocksource/drivers/timer-mediatek: Add system timer bindings Date: Fri, 29 Jun 2018 08:17:22 +0800 Message-ID: <1530231446-13760-2-git-send-email-stanley.chu@mediatek.com> References: <1530231446-13760-1-git-send-email-stanley.chu@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1530231446-13760-1-git-send-email-stanley.chu@mediatek.com> Sender: linux-kernel-owner@vger.kernel.org To: Matthias Brugger , Daniel Lezcano , Thomas Gleixner , Rob Herring Cc: linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, wsd_upstream@mediatek.com, Stanley Chu List-Id: devicetree@vger.kernel.org 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 --- .../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..605fd8f 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 = ; - clocks = <&system_clk>, <&rtc_clk>; + clocks = <&system_clk>; + }; + + +** System Timer (SYST) + +Required properties: +- compatible: Should contain + * "mediatek,mt6765-timer" 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-timer"; + reg = <0 0x10017000 0 0x1000>; + interrupts = ; + clocks = <&system_clk>; }; -- 1.7.9.5