[PATCH v4 1/7] arm: dts: imx6qdl-icore: Add backlight support for lvds

[PATCH v4 1/7] arm: dts: imx6qdl-icore: Add backlight support for lvds

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

This patch add support for lvds backlight on i.CoreM6 QDL
variant boards.

Cc: Domenico Acri <domenico.acri@engicam.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4, v3, v2:
- none

 arch/arm/boot/dts/imx6qdl-icore.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-icore.dtsi b/arch/arm/boot/dts/imx6qdl-icore.dtsi
index 55bebfc..7dda608 100644
--- a/arch/arm/boot/dts/imx6qdl-icore.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-icore.dtsi
@@ -48,6 +48,14 @@
 		reg = <0x10000000 0x80000000>;
 	};
 
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm3 0 100000>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <7>;
+		status = "okay";
+	};
+
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-name = "3P3V";
@@ -136,6 +144,12 @@
 	status = "okay";
 };
 
+&pwm3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm3>;
+	status = "okay";
+};
+
 &uart4 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart4>;
@@ -246,6 +260,12 @@
 		>;
 	};
 
+	pinctrl_pwm3: pwm3grp-1 {
+		fsl,pins = <
+			MX6QDL_PAD_SD4_DAT1__PWM3_OUT 0x1b0b1
+		>;
+	};
+
 	pinctrl_usbotg: usbotggrp {
 		fsl,pins = <
 			MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x17059
-- 
1.9.1

[PATCH v4 2/7] arm: dts: imx6q: Add Engicam i.CoreM6 Quad/Dual OpenFrame Cap 10.1 initial support

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

i.CoreM6 Quad/Dual OpenFrame modules are "system on modules plus
openframe display carriers" which are good solution for develop
user friendly graphic user interface.

General features:
CPU           NXP i.MX6Q rev1.2 at 792 MHz
RAM           1GB, 32, 64 bit, DDR3-800/1066
NAND          SLC,512MB
LVDS Display  TFT 10.1" industrial, 1280x800 resolution
Backlight     LED backlight, brightness 350 Cd/m2
Power supply  15 to 30 Vdc

Cc: Domenico Acri <domenico.acri@engicam.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- Fix checkpatch.pl Errors/Warnings
Changes for v3:
- Use native-mode as timing0 since this is the initial lvds-channel
- Rename hsd100pxn1 reference as timing0
- Update the correct patch author
Changes for v2:
- none

 arch/arm/boot/dts/Makefile                |  1 +
 arch/arm/boot/dts/imx6q-icore-ofcap10.dts | 76 +++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx6q-icore-ofcap10.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 0118084..458ec09 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -398,6 +398,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6q-h100.dtb \
 	imx6q-hummingboard.dtb \
 	imx6q-icore.dtb \
+	imx6q-icore-ofcap10.dtb \
 	imx6q-icore-rqs.dtb \
 	imx6q-marsboard.dtb \
 	imx6q-mccmon6.dtb \
diff --git a/arch/arm/boot/dts/imx6q-icore-ofcap10.dts b/arch/arm/boot/dts/imx6q-icore-ofcap10.dts
new file mode 100644
index 0000000..49b60ca
--- /dev/null
+++ b/arch/arm/boot/dts/imx6q-icore-ofcap10.dts
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License
+ *     version 2 as published by the Free Software Foundation.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6q.dtsi"
+#include "imx6qdl-icore.dtsi"
+
+/ {
+	model = "Engicam i.CoreM6 Quad/Dual OpenFrame Capacitive touch 10.1 Kit";
+	compatible = "engicam,imx6-icore", "fsl,imx6q";
+};
+
+&ldb {
+	status = "okay";
+
+	lvds-channel@0 {
+		fsl,data-mapping = "spwg";
+		fsl,data-width = <24>;
+		status = "okay";
+
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: timing0 {
+				clock-frequency = <60000000>;
+				hactive = <1280>;
+				vactive = <800>;
+				hback-porch = <40>;
+				hfront-porch = <40>;
+				vback-porch = <10>;
+				vfront-porch = <3>;
+				hsync-len = <80>;
+				vsync-len = <10>;
+			};
+		};
+	};
+};
-- 
1.9.1

[PATCH v4 3/7] arm: dts: imx6q: Add Engicam i.CoreM6 Quad/Dual OpenFrame Cap 12.3 initial support

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

i.CoreM6 Quad/Dual OpenFrame modules are "system on modules plus
openframe display carriers" which are good solution for develop
user friendly graphic user interface.

General features:
CPU           NXP i.MX6Q rev1.2 at 792 MHz
RAM           1GB, 32, 64 bit, DDR3-800/1066
NAND          SLC,512MB
LVDS Display  TFT 12.3" industrial, 1280x480 resolution
Backlight     LED backlight, brightness 350 Cd/m2
Power supply  15 to 30 Vdc

Cc: Domenico Acri <domenico.acri@engicam.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- Fix checkpatch.pl Errors/Warnings
Changes for v3:
- Use native-mode as timing0 since this is the initial lvds-channel
- Rename hsd100pxn1 reference as timing0
- Update the correct patch author
Changes for v2:
- none

 arch/arm/boot/dts/Makefile                |  1 +
 arch/arm/boot/dts/imx6q-icore-ofcap12.dts | 76 +++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx6q-icore-ofcap12.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 458ec09..adfdaee 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -399,6 +399,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6q-hummingboard.dtb \
 	imx6q-icore.dtb \
 	imx6q-icore-ofcap10.dtb \
+	imx6q-icore-ofcap12.dtb \
 	imx6q-icore-rqs.dtb \
 	imx6q-marsboard.dtb \
 	imx6q-mccmon6.dtb \
diff --git a/arch/arm/boot/dts/imx6q-icore-ofcap12.dts b/arch/arm/boot/dts/imx6q-icore-ofcap12.dts
new file mode 100644
index 0000000..9e230f5
--- /dev/null
+++ b/arch/arm/boot/dts/imx6q-icore-ofcap12.dts
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License
+ *     version 2 as published by the Free Software Foundation.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6q.dtsi"
+#include "imx6qdl-icore.dtsi"
+
+/ {
+	model = "Engicam i.CoreM6 Quad/Dual OpenFrame Capacitive touch 12 Kit";
+	compatible = "engicam,imx6-icore", "fsl,imx6q";
+};
+
+&ldb {
+	status = "okay";
+
+	lvds-channel@0 {
+		fsl,data-mapping = "spwg";
+		fsl,data-width = <18>;
+		status = "okay";
+
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: timing0 {
+				clock-frequency = <46800000>;
+				hactive = <1280>;
+				vactive = <480>;
+				hback-porch = <353>;
+				hfront-porch = <47>;
+				vback-porch = <39>;
+				vfront-porch = <4>;
+				hsync-len = <8>;
+				vsync-len = <2>;
+			};
+		};
+	};
+};
-- 
1.9.1

[PATCH v4 5/7] arm: dts: imx6q-icore: Add touchscreen node

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

max11801 touchscreen on Engicam iCoreM6 Quad module is
connected via i2c1, so add tc: max11801@48 on i2c1.

Cc: Domenico Acri <domenico.acri@engicam.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- Newly added patch.

 arch/arm/boot/dts/imx6q-icore.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/imx6q-icore.dts b/arch/arm/boot/dts/imx6q-icore.dts
index 73f34d1..8c1a572 100644
--- a/arch/arm/boot/dts/imx6q-icore.dts
+++ b/arch/arm/boot/dts/imx6q-icore.dts
@@ -58,6 +58,15 @@
 	status = "okay";
 };
 
+&i2c1 {
+	ts: max11801@48 {
+		compatible = "max11801";
+		reg = <0x48>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
+	};
+};
+
 &ldb {
 	status = "okay";
 
-- 
1.9.1

Re: [PATCH v4 5/7] arm: dts: imx6q-icore: Add touchscreen node

[Shawn Guo]

On Wed, Mar 08, 2017 at 12:47:55PM +0530, Jagan Teki wrote:
> From: Jagan Teki <jagan@amarulasolutions.com>
> 
> max11801 touchscreen on Engicam iCoreM6 Quad module is
> connected via i2c1, so add tc: max11801@48 on i2c1.
> 
> Cc: Domenico Acri <domenico.acri@engicam.com>
> Cc: Matteo Lisi <matteo.lisi@engicam.com>
> Cc: Michael Trimarchi <michael@amarulasolutions.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
> Changes for v4:
> - Newly added patch.
> 
>  arch/arm/boot/dts/imx6q-icore.dts | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx6q-icore.dts b/arch/arm/boot/dts/imx6q-icore.dts
> index 73f34d1..8c1a572 100644
> --- a/arch/arm/boot/dts/imx6q-icore.dts
> +++ b/arch/arm/boot/dts/imx6q-icore.dts
> @@ -58,6 +58,15 @@
>  	status = "okay";
>  };
>  
> +&i2c1 {
> +	ts: max11801@48 {
> +		compatible = "max11801";

Undocumented compatible?

Shawn

> +		reg = <0x48>;
> +		interrupt-parent = <&gpio3>;
> +		interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
> +	};
> +};
> +
>  &ldb {
>  	status = "okay";
>  
> -- 
> 1.9.1
> 

[PATCH v4 6/7] arm: imx_v6_v7_defconfig: Select max11801_ts touchscreen driver

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

Select CONFIG_TOUCHSCREEN_MAX11801 so that we can have touchscreen
funtionality by default on Engicam i.CoreM6 Quad boards.

Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- Newly added patch.

 arch/arm/boot/dts/imx6q-icore.dts | 9 +++++++++
 1 file changed, 9 insertions(+)
 arch/arm/configs/imx_v6_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index eaba3b1..842168f 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -165,6 +165,7 @@ CONFIG_TOUCHSCREEN_ADS7846=y
 CONFIG_TOUCHSCREEN_EGALAX=y
 CONFIG_TOUCHSCREEN_IMX6UL_TSC=y
 CONFIG_TOUCHSCREEN_EDT_FT5X06=y
+CONFIG_TOUCHSCREEN_MAX11801=y
 CONFIG_TOUCHSCREEN_MC13783=y
 CONFIG_TOUCHSCREEN_TSC2004=y
 CONFIG_TOUCHSCREEN_TSC2007=y
-- 
1.9.1

[PATCH v4 7/7] arm: imx_v6_v7_defconfig: Select hid-multitouchdriver

[Jagan Teki]

From: Jagan Teki <jagan@amarulasolutions.com>

Select CONFIG_HID_MULTITOUCH so that we can have multi touchscreen
funtionality via USB by default on Engicam i.CoreM6 Quad with
OpenFrame Cap 10.1 display boards.

Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- Newly added patch.

 arch/arm/boot/dts/imx6q-icore.dts | 9 +++++++++
 1 file changed, 9 insertions(+)
 arch/arm/configs/imx_v6_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 842168f..914e8cb 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -174,6 +174,7 @@ CONFIG_TOUCHSCREEN_SX8654=y
 CONFIG_TOUCHSCREEN_COLIBRI_VF50=y
 CONFIG_INPUT_MISC=y
 CONFIG_INPUT_MMA8450=y
+CONFIG_HID_MULTITOUCH=y
 CONFIG_SERIO_SERPORT=m
 # CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_IMX=y
-- 
1.9.1

[PATCH v4 4/7] arm: dts: imx6q-icore: Add LVDS support

[Jagan Teki]

From: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>

Add LVDS display support for OpenFrame Capacitive touch 7 inc
display which is supported by Engicam i.CoreM6 QDL Starter Kit.

Cc: Domenico Acri <domenico.acri-4s7YQHO/iPVBDgjK7y7TUQ@public.gmane.org>
Cc: Matteo Lisi <matteo.lisi-4s7YQHO/iPVBDgjK7y7TUQ@public.gmane.org>
Cc: Michael Trimarchi <michael-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Cc: Shawn Guo <shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
---
Changes for v4:
- Fix checkpatch.pl Errors/Warnings
Changes for v3:
- Use native-mode as timing0 since this is the initial lvds-channel
- Rename hsd100pxn1 reference as timing0
- Update the correct patch author
Changes for v2:
- none

 arch/arm/boot/dts/imx6q-icore.dts | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm/boot/dts/imx6q-icore.dts b/arch/arm/boot/dts/imx6q-icore.dts
index 59eb7ad..73f34d1 100644
--- a/arch/arm/boot/dts/imx6q-icore.dts
+++ b/arch/arm/boot/dts/imx6q-icore.dts
@@ -57,3 +57,28 @@
 &can2 {
 	status = "okay";
 };
+
+&ldb {
+	status = "okay";
+
+	lvds-channel@0 {
+		fsl,data-mapping = "spwg";
+		fsl,data-width = <18>;
+		status = "okay";
+
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: timing0 {
+				clock-frequency = <60000000>;
+				hactive = <800>;
+				vactive = <480>;
+				hback-porch = <30>;
+				hfront-porch = <30>;
+				vback-porch = <5>;
+				vfront-porch = <5>;
+				hsync-len = <64>;
+				vsync-len = <20>;
+			};
+		};
+	};
+};
-- 
1.9.1

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Re: [PATCH v4 1/7] arm: dts: imx6qdl-icore: Add backlight support for lvds

[Shawn Guo]

On Wed, Mar 08, 2017 at 12:47:51PM +0530, Jagan Teki wrote:
> From: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
> 
> This patch add support for lvds backlight on i.CoreM6 QDL
> variant boards.
> 
> Cc: Domenico Acri <domenico.acri-4s7YQHO/iPVBDgjK7y7TUQ@public.gmane.org>
> Cc: Matteo Lisi <matteo.lisi-4s7YQHO/iPVBDgjK7y7TUQ@public.gmane.org>
> Cc: Michael Trimarchi <michael-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
> Cc: Shawn Guo <shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>

For sake of consistency, please use 'ARM: ...' than 'arm: ...' in
subject prefix for i.MX patches.

> ---
> Changes for v4, v3, v2:
> - none
> 
>  arch/arm/boot/dts/imx6qdl-icore.dtsi | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx6qdl-icore.dtsi b/arch/arm/boot/dts/imx6qdl-icore.dtsi
> index 55bebfc..7dda608 100644
> --- a/arch/arm/boot/dts/imx6qdl-icore.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-icore.dtsi
> @@ -48,6 +48,14 @@
>  		reg = <0x10000000 0x80000000>;
>  	};
>  
> +	backlight {
> +		compatible = "pwm-backlight";
> +		pwms = <&pwm3 0 100000>;
> +		brightness-levels = <0 4 8 16 32 64 128 255>;
> +		default-brightness-level = <7>;
> +		status = "okay";

The okay status doesn't make a difference for such case, and can be
saved.

> +	};
> +
>  	reg_3p3v: regulator-3p3v {
>  		compatible = "regulator-fixed";
>  		regulator-name = "3P3V";
> @@ -136,6 +144,12 @@
>  	status = "okay";
>  };
>  
> +&pwm3 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_pwm3>;
> +	status = "okay";
> +};
> +
>  &uart4 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_uart4>;
> @@ -246,6 +260,12 @@
>  		>;
>  	};
>  
> +	pinctrl_pwm3: pwm3grp-1 {

The '-1' suffix is meaningless.

Shawn

> +		fsl,pins = <
> +			MX6QDL_PAD_SD4_DAT1__PWM3_OUT 0x1b0b1
> +		>;
> +	};
> +
>  	pinctrl_usbotg: usbotggrp {
>  		fsl,pins = <
>  			MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x17059
> -- 
> 1.9.1
> 
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