[PATCH 0/3] Disable PWMs in imx6ql.dtsi

[PATCH 0/3] Disable PWMs in imx6ql.dtsi

[Philipp Zabel]

Hi,

PWMs are only useful if they have an output pin connected. Since
most boards don't have all of the PWM output pins assigned, let's
disable the PWMs by default in imx6qdl.dtsi and have each board
device tree explicitly enable just the PWMs they need.
Most device trees do this already - add the missing ones and
change the default status to "disabled" in the dtsi.

regards
Philipp

Philipp Zabel (3):
  ARM: dts: imx6dl-aristainetos: enable backlight PWM explicitly
  ARM: dts: hummingboard/cubox-i: enable front LED PWM explicitly
  ARM: dts: imx6qdl: disable PWMs by default

 arch/arm/boot/dts/imx6dl-aristainetos_4.dts | 4 ++++
 arch/arm/boot/dts/imx6dl-aristainetos_7.dts | 4 ++++
 arch/arm/boot/dts/imx6qdl-cubox-i.dtsi      | 4 ++++
 arch/arm/boot/dts/imx6qdl.dtsi              | 4 ++++
 4 files changed, 16 insertions(+)

-- 
2.1.4

[PATCH 1/3] ARM: dts: imx6dl-aristainetos: enable backlight PWM explicitly

[Philipp Zabel]

All PWM users should explicitly enable the used PWMs in their device tree
so they can be disabled by default in imx6qdl.dtsi.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 arch/arm/boot/dts/imx6dl-aristainetos_4.dts | 4 ++++
 arch/arm/boot/dts/imx6dl-aristainetos_7.dts | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/imx6dl-aristainetos_4.dts b/arch/arm/boot/dts/imx6dl-aristainetos_4.dts
index 9cd06e5..d4c4a22 100644
--- a/arch/arm/boot/dts/imx6dl-aristainetos_4.dts
+++ b/arch/arm/boot/dts/imx6dl-aristainetos_4.dts
@@ -83,3 +83,7 @@
 &ipu1_di0_disp0 {
 	remote-endpoint = <&display0_in>;
 };
+
+&pwm1 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/imx6dl-aristainetos_7.dts b/arch/arm/boot/dts/imx6dl-aristainetos_7.dts
index b413e24..15203f0 100644
--- a/arch/arm/boot/dts/imx6dl-aristainetos_7.dts
+++ b/arch/arm/boot/dts/imx6dl-aristainetos_7.dts
@@ -72,3 +72,7 @@
 &ipu1_di0_disp0 {
 	remote-endpoint = <&display0_in>;
 };
+
+&pwm3 {
+	status = "okay";
+};
-- 
2.1.4

[PATCH 2/3] ARM: dts: hummingboard/cubox-i: enable front LED PWM explicitly

[Philipp Zabel]

All PWM users should explicitly enable the used PWMs in their device tree
so they can be disabled by default in imx6qdl.dtsi.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 arch/arm/boot/dts/imx6qdl-cubox-i.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
index 6a524ca..6c9f5e9 100644
--- a/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-cubox-i.dtsi
@@ -173,6 +173,10 @@
 	};
 };
 
+&pwm1 {
+	status = "okay";
+};
+
 &spdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_cubox_i_spdif>;
-- 
2.1.4

[PATCH 3/3] ARM: dts: imx6qdl: disable PWMs by default

[Philipp Zabel]

Since PWMs are only useful if they are actually connected to an output pin,
let users enable them explicitly in their device trees where they should
also set up the pin configuration.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 arch/arm/boot/dts/imx6qdl.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index ce37bbf1..9cc30a4 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -380,6 +380,7 @@
 				clocks = <&clks IMX6QDL_CLK_IPG>,
 					 <&clks IMX6QDL_CLK_PWM1>;
 				clock-names = "ipg", "per";
+				status = "disabled";
 			};
 
 			pwm2: pwm at 02084000 {
@@ -390,6 +391,7 @@
 				clocks = <&clks IMX6QDL_CLK_IPG>,
 					 <&clks IMX6QDL_CLK_PWM2>;
 				clock-names = "ipg", "per";
+				status = "disabled";
 			};
 
 			pwm3: pwm at 02088000 {
@@ -400,6 +402,7 @@
 				clocks = <&clks IMX6QDL_CLK_IPG>,
 					 <&clks IMX6QDL_CLK_PWM3>;
 				clock-names = "ipg", "per";
+				status = "disabled";
 			};
 
 			pwm4: pwm at 0208c000 {
@@ -410,6 +413,7 @@
 				clocks = <&clks IMX6QDL_CLK_IPG>,
 					 <&clks IMX6QDL_CLK_PWM4>;
 				clock-names = "ipg", "per";
+				status = "disabled";
 			};
 
 			can1: flexcan at 02090000 {
-- 
2.1.4

[PATCH 0/3] Disable PWMs in imx6ql.dtsi

[Shawn Guo]

On Mon, Mar 09, 2015 at 05:40:33PM +0100, Philipp Zabel wrote:
> Philipp Zabel (3):
>   ARM: dts: imx6dl-aristainetos: enable backlight PWM explicitly
>   ARM: dts: hummingboard/cubox-i: enable front LED PWM explicitly
>   ARM: dts: imx6qdl: disable PWMs by default

Applied all, thanks.