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SubjectRe: [PATCH 1/3] ARM: dts: add Netronix E60K02 board common file
Hi Marco,

On Fri, 27 Sep 2019 11:47:21 +0200
Marco Felsch <m.felsch@pengutronix.de> wrote:

> Hi Andreas,
>
> thanks for the patch.
>
thanks for the quick review. Most of your comments are clear.

[...]
> > + wifi_pwrseq: wifi_pwrseq {
> > + compatible = "mmc-pwrseq-simple";
> > + post-power-on-delay-ms = <20>;
> > + reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
>
> Can you add a pinctrl-entry here please? The general rule is to mux
> things where you use it.
>
yes, there are many places in my patch where they are added to some
parent devices.
I will fix that.
[...]
> > + leds {
> > + compatible = "gpio-leds";
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_led>;
>
> Please move all muxing you made here into this file or add phandles so
> the dts file need to add only the muxing stuff. This applies to all
> pinctrl you made here.
>
so you disagree with this pattern:
in .dtsi
some_device {
pinctrl-0 = <&pinctrl_some_device>;
};

and in .dts (one I sent with this patch series and the tolino/mx6sl one
is not ready-cooked yet, will be part of a later series)
&iomuxc {
pinctrl_some_device: some_devicegrp {
fsl,pins = <...>;
};
};

?

> > +
> > + GLED {
> > + gpios = <&gpio5 7 GPIO_ACTIVE_LOW>;
> > + linux,default-trigger = "timer";
> > + };
> > + };
> > +
> > + gpio-keys {
> > + compatible = "gpio-keys";
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_gpio_keys>;
> > + power {
> > + label = "Power";
> > + gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
> > + linux,code = <KEY_POWER>;
>
> Add missing header: dt-bindings/input/input.h to use this.
>
I am doing this in the .dts but it is probably better to do it here
because it is used here.

> > + gpio-key,wakeup;
> > + };
> > + cover {
> > + label = "Cover";
> > + gpios = <&gpio5 12 GPIO_ACTIVE_LOW>;
> > + linux,code = <SW_LID>;
> > + linux,input-type = <0x05>; /* EV_SW */
>
> In the header above EV_SW is also specified so please use it here.
>
This pattern is in many files. I took one as an example. It seems that
50% of devicetree files have this pattern, the other 50% do have the
pattern you proposed (which I like more). So probably EV_SW was not
available in former times?

> > + gpio-key,wakeup;
> > + };
> > + };
> > +
> > +};
> > +
> > +
> > +
>
> Whitespaces
>
> > +&audmux {
> > + pinctrl-names = "default";
> > + status = "disabled";
>
> Why you mentioned a pinctrl-names here without the mux? Do we need the
> status line here? The common case is that such devices are off by
> default/the base dt.
>
yes, that things can be removed.
> > +};
> > +
> > +&snvs_rtc {
> > + status = "disabled";
>
> Same applies here.
>

No, seems to be an exception, it does not have a status = "disabled" in
imx6sll.dtsi.

> > +};
> > +
> > +&i2c1 {
> > + clock-frequency = <100000>;
> > + pinctrl-names = "default","sleep";
> > + pinctrl-0 = <&pinctrl_i2c1 &pinctrl_lm3630a_bl_gpio>;
>
> The &pinctrl_lm3630a_bl_gpio should be moved into the lm3630a node.
>
> > + pinctrl-1 = <&pinctrl_i2c1_sleep>;
> > + status = "okay";
> > +
> > + lm3630a: lm3630a-i2c@36 {
>
> please name it backlight@36
>
> > + reg = <0x36>;
> > + status = "ok";
>
> status lines are always be the last and if it is okay you can drop it
> because the default is okay.
>
well, I added it because the driver was not loaded but later I found out
that the real reason is that module aliases were broken and forgot to
remove that "ok".

Regards,
Andreas

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