[PATCH] ARM: dts: tpc: Device tree description of the TPC board
Lukasz Majewski
lukma at denx.de
Fri Mar 2 23:06:04 PST 2018
Hi Fabio,
> Hi Lukasz,
>
> In addition to Sascha's comments:
Thanks for your input - please see my reply below.
>
> On Fri, Mar 2, 2018 at 9:17 AM, Lukasz Majewski <lukma at denx.de> wrote:
>
> > diff --git a/arch/arm/boot/dts/imx6q-kp-tpc.dts
> > b/arch/arm/boot/dts/imx6q-kp-tpc.dts new file mode 100644
> > index 000000000000..955462e778c9
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/imx6q-kp-tpc.dts
> > @@ -0,0 +1,84 @@
> > +/*
> > + * Copyright 2018
> > + * Lukasz Majewski, DENX Software Engineering, lukma at denx.de
> > + *
> > + * 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 licensed under the terms of the GNU General
> > Public
> > + * License version 2. This program is licensed "as is" without
> > + * any warranty of any kind, whether express or implied.
> > + *
> > + * 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.
> > + */
> > +
>
> Please consider using SPDX tag instead.
Ok.
>
> > +/dts-v1/;
> > +
> > +#include "imx6q-kp.dtsi"
> > +
> > +/ {
> > + model = "Freescale i.MX6 Quad K+P TPC Board";
> > + compatible = "fsl,imx6q-tpc", "fsl,imx6q";
>
> Use the board manufacturer symbol instead.
>
> If needed, add an entry for the vendor at
> Documentation/devicetree/bindings/vendor-prefixes.txt
I see.
>
> > +};
> > +
> > +&lcd_display {
> > + display-timings {
> > + 800x480x60 {
> > + clock-frequency = <34209000>;
> > + hactive = <800>;
> > + vactive = <480>;
> > + hback-porch = <85>;
> > + hfront-porch = <15>;
> > + vback-porch = <34>;
> > + vfront-porch = <10>;
> > + hsync-len = <28>;
> > + vsync-len = <1>;
> > + hsync-active = <1>;
> > + vsync-active = <1>;
> > + de-active = <1>;
> > + };
> > + };
> > +};
>
> We prefer to use a compatible panel entry instead of keeping the panel
> timings inside the dts.
Previously (for other imx6q board) I've added entry to e.g.
panel-simple.c file [1] to describe the display.
I thought that adding timings to DTS is more welcome - hence we do not
need to add any extra code to Linux when porting new board?
>
> > +
> > +&ipu1_di0_disp0 {
> > + remote-endpoint = <&lcd_display_in>;
> > +};
> > +
> > +&can1 {
> > + status = "disabled";
> > +};
> > +
> > +&can2 {
> > + status = "disabled";
> > +};
> > +
> > +&uart1 {
> > + status = "okay";
> > +};
> > +
> > +&uart2 {
> > + status = "disabled";
> > +};
> > diff --git a/arch/arm/boot/dts/imx6q-kp.dtsi
> > b/arch/arm/boot/dts/imx6q-kp.dtsi new file mode 100644
> > index 000000000000..47a10fb1d46b
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/imx6q-kp.dtsi
> > @@ -0,0 +1,468 @@
> > +/*
> > + * Copyright 2018
> > + * Lukasz Majewski, DENX Software Engineering, lukma at denx.de
> > + *
> > + * 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 licensed under the terms of the GNU General
> > Public
> > + * License version 2. This program is licensed "as is" without
> > + * any warranty of any kind, whether express or implied.
> > + *
> > + * 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.
> > + */
>
> SPDX, please.
The other upstreamed imx6q board used dual license - GPLv2 or X11
(which is also called MIT license).
I suppose that this license header shall be replaced with:
SPDX-License-Identifier: (GPL-2.0+ OR MIT)
Am I correct?
>
>
> > + leds {
> > + compatible = "gpio-leds";
> > +
> > + green {
> > + label = "led1";
> > + gpios = <&gpio3 16 0>;
>
> gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
>
> > + linux,default-trigger = "gpio";
> > + default-state = "off";
> > + };
> > +
> > + red {
> > + label = "led0";
> > + gpios = <&gpio3 23 0>;
>
> GPIO_ACTIVE_HIGH
Ok.
>
> > + linux,default-trigger = "gpio";
> > + default-state = "off";
> > + };
> > + };
> > +
> > + memory: memory {
> > + reg = <0x10000000 0x40000000>;
> > + };
>
> memory at 10000000 otherwise warnings are seen when building with W=1.
>
> Make sure that building the dtb with W=1 introduces no warnings.
Ok. Thanks for pointing this out.
>
> > +&i2c1 {
> > + clock-frequency = <400000>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_i2c1>;
> > + status = "okay";
> > +
> > + goodix_ts at 5d {
> > + compatible = "goodix,gt911";
> > + reg = <0x5d>;
> > +
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_ts>;
> > +
>
> No need for these blank lines.
Ok.
>
> > + interrupt-parent = <&gpio1>;
> > + interrupts = <9 2>;
>
> Please use an IRQ flag.
>
> > + irq-gpios = <&gpio1 9 0>;
>
> GPIO_ACTIVE_HIGH
>
> > + reset-gpios = <&gpio5 2 0>;
>
> GPIO_ACTIVE_HIGH.
>
> > +&i2c2 {
> > + clock-frequency = <400000>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_i2c2>;
> > + status = "okay";
> > +
> > + codec: sgtl5000 at a {
> > + compatible = "fsl,sgtl5000";
> > + #sound-dai-cells = <0>;
> > + reg = <0x0a>;
> > +
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_codec>;
> > +
>
> No need for these blank lines.
>
> > + clocks = <&clks IMX6QDL_CLK_CKO>;
> > + VDDA-supply = <®_3p3v>;
> > + VDDIO-supply = <®_3p3v>;
>
> > +&uart2 {
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_uart2>;
> > + fsl,uart-has-rtscts;
>
> fsl,uart-has-rtscts has been deprecated. Please use uart-has-rtscts
> instead.
Ok.
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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