[lkml]   [2018]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] ARM: DTS: imx53: Add support for imx53 HSC/DDC boards from K+P
Hi Fabio,

> Hi Lukasz,
> On Sat, May 19, 2018 at 9:02 AM, Lukasz Majewski <>
> wrote:
> > After removing imx53-kp-ddc and imx53-kp-common iomux subnodes I do
> > see following errors in the dmesg (v4.17-rc5):
> >
> > imx53-pinctrl 53fa8000.iomuxc: function 'iomuxc' not supported
> > imx53-pinctrl 53fa8000.iomuxc: invalid function iomuxc in map
> > table
> Could you please investigate this error?

Sorry for "small" delay on this.

Ok, so I've investigated the issue:

1. The code, which you pasted:

works correctly as imx53-qsb-common.dtsi directly includes "imx53.dtsi"
in which iomuxc label is defined.

In my case though,

2. I do include imx53-tqma53.dtsi [1], in which the iomuxc" label
is extended:

&iomuxc {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_hog>;

imx53-tqma53 {
pinctrl_hog: hoggrp {



The imx53-tqma53.dtsi then includes imx53.dtsi.

Moreover, my file -> imx53-kp.dtsi as it includes [1], it extends
further the &iomuxc label:

&iomuxc {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_kp_common>;

imx53-kp-common {
pinctrl_buzzer: buzzergrp {

So, when I remove imx53-kp-common I will have mismatch with [1] iomuxc

The code works as expected when I do remove imx53-tqma53 in [1].

However, I would prefer to not touch this imx53-tqma53.dtsi file.
It is also included in: imx53-mba53.dts, which extends iomux in
following way:

&iomuxc {
lvds1 {
pinctrl_lvds1_1: lvds1-grp1 {

Here I would need to remove lvds1, disp1 and tve to make it working.
However, it will not break during build, but at run time.

Considering the above, I would prefer to leave the code in [1] as is
and use imx53-kp-common as well (as in v2 of this patch).

Fabio, what do you think?

[I'm using linux 4.17-rc7 (with included dtc 1.4.6)]

> I have just tried the following change on a imx53-qsb:
> and it works as expected:
> # dmesg | grep iomux
> [ 0.100046] imx53-pinctrl 53fa8000.iomuxc: initialized IMX pinctrl
> driver

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:
[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2018-05-29 16:00    [W:0.094 / U:1.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site