linux-kernel - [PATCH V6 1/5] dt-bindings: pwm: Add i.MX TPM PWM binding

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Message-ID: <1552977898-5590-2-git-send-email-Anson.Huang@nxp.com>
Date:   Tue, 19 Mar 2019 06:50:06 +0000
From:   Anson Huang <anson.huang@....com>
To:     "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "stefan@...er.ch" <stefan@...er.ch>,
        "otavio@...ystems.com.br" <otavio@...ystems.com.br>,
        Leonard Crestez <leonard.crestez@....com>,
        "schnitzeltony@...il.com" <schnitzeltony@...il.com>,
        "jan.tuerk@...rion.com" <jan.tuerk@...rion.com>,
        Robin Gong <yibin.gong@....com>,
        "linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>
CC:     dl-linux-imx <linux-imx@....com>
Subject: [PATCH V6 1/5] dt-bindings: pwm: Add i.MX TPM PWM binding

Add i.MX TPM(Low Power Timer/Pulse Width Modulation Module) PWM binding.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
Changes since V5:
	- improve compatible string;
	- change #pwm-cells to 3;
	- "pwm" -> "PWM";
---
 .../devicetree/bindings/pwm/imx-tpm-pwm.txt        | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt

diff --git a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt
new file mode 100644
index 0000000..94f1ad5
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.txt
@@ -0,0 +1,22 @@
+Freescale i.MX TPM PWM controller
+
+Required properties:
+- compatible : Should be "fsl,imx-tpm".
+- reg: Physical base address and length of the controller's registers.
+- #pwm-cells: Should be 3. See pwm.txt in this directory for a description of the cells format.
+- clocks : The clock provided by the SoC to drive the PWM.
+- interrupts: The interrupt for the PWM controller.
+
+Note: The TPM counter and period counter are shared between multiple channels, so all channels
+should use same period setting.
+
+Example:
+
+pwm0: tpm@...50000 {
+	compatible = "fsl,imx-tpm";
+	reg = <0x40250000 0x1000>;
+	assigned-clocks = <&clks IMX7ULP_CLK_LPTPM4>;
+	assigned-clock-parents = <&clks IMX7ULP_CLK_SOSC_BUS_CLK>;
+	clocks = <&clks IMX7ULP_CLK_LPTPM4>;
+	#pwm-cells = <3>;
+};
-- 
2.7.4