From d857d2fac22a9f4667f9445e04a8ab8e6d85fc10 Mon Sep 17 00:00:00 2001
From: Kumar Gala <kumar.gala@linaro.org>
Date: Thu, 1 Nov 2018 11:59:56 -0500
Subject: [PATCH] arm: soc: kinetis: Update PWM dts support

Add #pwm-cells properties to kinetis dts files and update the yaml
binding to spec the two cells as pin and period (in nanosecond to match
Linux Kernel binding spec).

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
---
 dts/arm/nxp/nxp_k6x.dtsi              | 8 ++++----
 dts/arm/nxp/nxp_kw2xd.dtsi            | 6 +++---
 dts/bindings/pwm/nxp,kinetis-ftm.yaml | 5 +++++
 3 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/dts/arm/nxp/nxp_k6x.dtsi b/dts/arm/nxp/nxp_k6x.dtsi
index f9df2fc78b9..078a9dcb5e4 100644
--- a/dts/arm/nxp/nxp_k6x.dtsi
+++ b/dts/arm/nxp/nxp_k6x.dtsi
@@ -337,8 +337,8 @@
 			reg = <0x40038000 0x98>;
 			interrupts = <42 0>;
 			label = "PWM_0";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		pwm1: pwm@40039000{
@@ -346,8 +346,8 @@
 			reg = <0x40039000 0x98>;
 			interrupts = <43 0>;
 			label = "PWM_1";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		pwm2: pwm@4003a000{
@@ -355,8 +355,8 @@
 			reg = <0x4003a000 0x98>;
 			interrupts = <44 0>;
 			label = "PWM_2";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		pwm3: pwm@400b9000{
@@ -364,8 +364,8 @@
 			reg = <0x400b9000 0x98>;
 			interrupts = <71 0>;
 			label = "PWM_3";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		adc0: adc@4003b000{
diff --git a/dts/arm/nxp/nxp_kw2xd.dtsi b/dts/arm/nxp/nxp_kw2xd.dtsi
index be7a0b6fc8f..ee4e6140fc1 100644
--- a/dts/arm/nxp/nxp_kw2xd.dtsi
+++ b/dts/arm/nxp/nxp_kw2xd.dtsi
@@ -287,8 +287,8 @@
 			reg = <0x40038000 0x98>;
 			interrupts = <42 0>;
 			label = "PWM_0";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		pwm1: pwm@40039000{
@@ -296,8 +296,8 @@
 			reg = <0x40039000 0x98>;
 			interrupts = <43 0>;
 			label = "PWM_1";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		pwm2: pwm@4003a000{
@@ -305,8 +305,8 @@
 			reg = <0x4003a000 0x98>;
 			interrupts = <44 0>;
 			label = "PWM_2";
-			/* channel information needed - fixme */
 			status = "disabled";
+			#pwm-cells = <2>;
 		};
 
 		adc0: adc@4003b000{
diff --git a/dts/bindings/pwm/nxp,kinetis-ftm.yaml b/dts/bindings/pwm/nxp,kinetis-ftm.yaml
index 1c525375202..40453d1639f 100644
--- a/dts/bindings/pwm/nxp,kinetis-ftm.yaml
+++ b/dts/bindings/pwm/nxp,kinetis-ftm.yaml
@@ -28,4 +28,9 @@ properties:
       category: required
       description: required interrupts
       generation: define
+
+"#cells":
+  - channel
+# period in terms of nanoseconds
+  - period
 ...