linux-kernel - [PATCH 1/3] clocksource/drivers/sysctr: Add an optional property

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Date:   Fri, 21 Jun 2019 16:28:36 +0800
From:   Anson.Huang@....com
To:     daniel.lezcano@...aro.org, tglx@...utronix.de, robh+dt@...nel.org,
        mark.rutland@....com, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, l.stach@...gutronix.de,
        abel.vesa@....com, ccaione@...libre.com, angus@...ea.ca,
        andrew.smirnov@...il.com, agx@...xcpu.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Linux-imx@....com
Subject: [PATCH 1/3] clocksource/drivers/sysctr: Add an optional property

From: Anson Huang <Anson.Huang@....com>

This patch adds an optional property "clock-frequency" to pass
the system counter frequency value to kernel system counter
driver and indicate the driver to skip of_clk operations, this
is to support those platforms using platform driver model for
clock driver.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt b/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt
index d576599..c9907a0 100644
--- a/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt
+++ b/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt
@@ -14,6 +14,11 @@ Required properties:
 - clocks : 	    Specifies the counter clock.
 - clock-names: 	    Specifies the clock's name of this module
 
+Optional properties:
+
+- clock-frequency : Specifies system counter clock frequency and indicates system
+		    counter driver to skip clock operations.
+
 Example:
 
 	system_counter: timer@...a0000 {
@@ -22,4 +27,5 @@ Example:
 		clocks = <&clk_8m>;
 		clock-names = "per";
 		interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <8333333>;
 	};
-- 
2.7.4