[PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO

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* [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO
@ 2024-10-23 21:03 Frank Li
  2024-10-24 14:05 ` Alexander Stein
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Frank Li @ 2024-10-23 21:03 UTC (permalink / raw)
  To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	Alexander Stein, open list:TQ SYSTEMS BOARD & DRIVER SUPPORT,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list

Fix the issue where both 'output-low' and 'output-high' exist under GPIO
hog nodes  (rst_usb_hub_hog and sel_usb_hub_hog) when applying device
tree overlays. Since /delete-property/ is not supported in the overlays,
setting 'output-low' results in both properties being present. The
workaround is to disable these hogs and create new ones with 'output-low'
as needed.

Fix below CHECK_DTBS warning:
arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtb: sel-usb-hub-hog:
   {'output-low': True, 'gpio-hog': True, 'gpios': [[1, 0]], 'output-high': True, 'phandle': 108, '$nodename': ['sel-usb-hub-hog']}
       is valid under each of {'required': ['output-low']}, {'required': ['output-high']

Fixes: 3f6fc30abebc ("arm64: dts: imx8mn: tqma8mqnl-mba8mx: Add USB DR overlay")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Alex:
	I have not hardware to run it. I check dtb output is correct.
---
 .../imx8mn-tqma8mqnl-mba8mx-usbotg.dtso       | 29 +++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
index 96db07fc9bece..1f2a0fe70a0a2 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
+++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
@@ -29,12 +29,37 @@ usb_dr_connector: endpoint {
 	};
 };
 
+/*
+ * rst_usb_hub_hog and sel_usb_hub_hog have property 'output-high',
+ * dt overlay don't support /delete-property/. Both 'output-low' and
+ * 'output-high' will be exist under hog nodes if overlay file set
+ * 'output-low'. Workaround is disable these hog and create new hog with
+ * 'output-low'.
+ */
+
 &rst_usb_hub_hog {
-	output-low;
+	status = "disabled";
+};
+
+&expander0 {
+	rst-usb-low-hub-hog {
+		gpio-hog;
+		gpios = <13 0>;
+		output-low;
+		line-name = "RST_USB_HUB#";
+	};
 };
 
 &sel_usb_hub_hog {
-	output-low;
+	status = "disabled";
+};
+
+&gpio2 {
+	sel-usb-low-hub-hog {
+		gpio-hog;
+		gpios = <1 GPIO_ACTIVE_HIGH>;
+		output-low;
+	};
 };
 
 &usbotg1 {
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread

* Re: [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO
  2024-10-23 21:03 [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO Frank Li
@ 2024-10-24 14:05 ` Alexander Stein
  2024-10-25 13:52 ` Geert Uytterhoeven
  2024-11-01 11:40 ` Shawn Guo
  2 siblings, 0 replies; 6+ messages in thread
From: Alexander Stein @ 2024-10-24 14:05 UTC (permalink / raw)
  To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	open list:TQ SYSTEMS BOARD & DRIVER SUPPORT,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list, Frank Li

Hi Frank,

thanks for noticing the issue and also providing a patch.

Am Mittwoch, 23. Oktober 2024, 23:03:13 CEST schrieb Frank Li:
> Fix the issue where both 'output-low' and 'output-high' exist under GPIO
> hog nodes  (rst_usb_hub_hog and sel_usb_hub_hog) when applying device
> tree overlays. Since /delete-property/ is not supported in the overlays,
> setting 'output-low' results in both properties being present. The
> workaround is to disable these hogs and create new ones with 'output-low'
> as needed.
> 
> Fix below CHECK_DTBS warning:
> arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtb: sel-usb-hub-hog:
>    {'output-low': True, 'gpio-hog': True, 'gpios': [[1, 0]], 'output-high': True, 'phandle': 108, '$nodename': ['sel-usb-hub-hog']}
>        is valid under each of {'required': ['output-low']}, {'required': ['output-high']
> 
> Fixes: 3f6fc30abebc ("arm64: dts: imx8mn: tqma8mqnl-mba8mx: Add USB DR overlay")
> Signed-off-by: Frank Li <Frank.Li@nxp.com>

Thanks, this works as intended. If this overlay applied the USB OTG connector (X19) can be used.

Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>

> ---
> Alex:
> 	I have not hardware to run it. I check dtb output is correct.
> ---
>  .../imx8mn-tqma8mqnl-mba8mx-usbotg.dtso       | 29 +++++++++++++++++--
>  1 file changed, 27 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> index 96db07fc9bece..1f2a0fe70a0a2 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> @@ -29,12 +29,37 @@ usb_dr_connector: endpoint {
>  	};
>  };
>  
> +/*
> + * rst_usb_hub_hog and sel_usb_hub_hog have property 'output-high',
> + * dt overlay don't support /delete-property/. Both 'output-low' and
> + * 'output-high' will be exist under hog nodes if overlay file set
> + * 'output-low'. Workaround is disable these hog and create new hog with
> + * 'output-low'.
> + */
> +
>  &rst_usb_hub_hog {
> -	output-low;
> +	status = "disabled";
> +};
> +
> +&expander0 {
> +	rst-usb-low-hub-hog {
> +		gpio-hog;
> +		gpios = <13 0>;
> +		output-low;
> +		line-name = "RST_USB_HUB#";
> +	};
>  };
>  
>  &sel_usb_hub_hog {
> -	output-low;
> +	status = "disabled";
> +};
> +
> +&gpio2 {
> +	sel-usb-low-hub-hog {
> +		gpio-hog;
> +		gpios = <1 GPIO_ACTIVE_HIGH>;
> +		output-low;
> +	};
>  };
>  
>  &usbotg1 {
> 


-- 
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
http://www.tq-group.com/



^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO
  2024-10-23 21:03 [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO Frank Li
  2024-10-24 14:05 ` Alexander Stein
@ 2024-10-25 13:52 ` Geert Uytterhoeven
  2024-10-25 14:00   ` Alexander Stein
  2024-10-25 14:05   ` Frank Li
  2024-11-01 11:40 ` Shawn Guo
  2 siblings, 2 replies; 6+ messages in thread
From: Geert Uytterhoeven @ 2024-10-25 13:52 UTC (permalink / raw)
  To: Frank Li
  Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	Alexander Stein, open list:TQ SYSTEMS BOARD & DRIVER SUPPORT,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list

Hi Frank,

On Wed, Oct 23, 2024 at 11:07 PM Frank Li <Frank.Li@nxp.com> wrote:
> Fix the issue where both 'output-low' and 'output-high' exist under GPIO
> hog nodes  (rst_usb_hub_hog and sel_usb_hub_hog) when applying device
> tree overlays. Since /delete-property/ is not supported in the overlays,
> setting 'output-low' results in both properties being present. The
> workaround is to disable these hogs and create new ones with 'output-low'
> as needed.
>
> Fix below CHECK_DTBS warning:
> arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtb: sel-usb-hub-hog:
>    {'output-low': True, 'gpio-hog': True, 'gpios': [[1, 0]], 'output-high': True, 'phandle': 108, '$nodename': ['sel-usb-hub-hog']}
>        is valid under each of {'required': ['output-low']}, {'required': ['output-high']
>
> Fixes: 3f6fc30abebc ("arm64: dts: imx8mn: tqma8mqnl-mba8mx: Add USB DR overlay")
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
> Alex:
>         I have not hardware to run it. I check dtb output is correct.
> ---
>  .../imx8mn-tqma8mqnl-mba8mx-usbotg.dtso       | 29 +++++++++++++++++--
>  1 file changed, 27 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> index 96db07fc9bece..1f2a0fe70a0a2 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> @@ -29,12 +29,37 @@ usb_dr_connector: endpoint {
>         };
>  };
>
> +/*
> + * rst_usb_hub_hog and sel_usb_hub_hog have property 'output-high',
> + * dt overlay don't support /delete-property/. Both 'output-low' and
> + * 'output-high' will be exist under hog nodes if overlay file set
> + * 'output-low'. Workaround is disable these hog and create new hog with
> + * 'output-low'.
> + */
> +
>  &rst_usb_hub_hog {
> -       output-low;
> +       status = "disabled";
> +};
> +
> +&expander0 {
> +       rst-usb-low-hub-hog {
> +               gpio-hog;
> +               gpios = <13 0>;
> +               output-low;
> +               line-name = "RST_USB_HUB#";
> +       };
>  };
>
>  &sel_usb_hub_hog {
> -       output-low;
> +       status = "disabled";
> +};
> +
> +&gpio2 {
> +       sel-usb-low-hub-hog {
> +               gpio-hog;
> +               gpios = <1 GPIO_ACTIVE_HIGH>;
> +               output-low;
> +       };
>  };
>
>  &usbotg1 {

Note that after this, there is still

    /delete-property/ disable-over-current;

left, which does not actually remove the property.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO
  2024-10-25 13:52 ` Geert Uytterhoeven
@ 2024-10-25 14:00   ` Alexander Stein
  2024-10-25 14:05   ` Frank Li
  1 sibling, 0 replies; 6+ messages in thread
From: Alexander Stein @ 2024-10-25 14:00 UTC (permalink / raw)
  To: Frank Li, Geert Uytterhoeven
  Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	open list:TQ SYSTEMS BOARD & DRIVER SUPPORT,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list

Hi Geert,

Am Freitag, 25. Oktober 2024, 15:52:58 CEST schrieb Geert Uytterhoeven:
> Hi Frank,
> 
> On Wed, Oct 23, 2024 at 11:07 PM Frank Li <Frank.Li@nxp.com> wrote:
> > Fix the issue where both 'output-low' and 'output-high' exist under GPIO
> > hog nodes  (rst_usb_hub_hog and sel_usb_hub_hog) when applying device
> > tree overlays. Since /delete-property/ is not supported in the overlays,
> > setting 'output-low' results in both properties being present. The
> > workaround is to disable these hogs and create new ones with 'output-low'
> > as needed.
> >
> > Fix below CHECK_DTBS warning:
> > arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtb: sel-usb-hub-hog:
> >    {'output-low': True, 'gpio-hog': True, 'gpios': [[1, 0]], 'output-high': True, 'phandle': 108, '$nodename': ['sel-usb-hub-hog']}
> >        is valid under each of {'required': ['output-low']}, {'required': ['output-high']
> >
> > Fixes: 3f6fc30abebc ("arm64: dts: imx8mn: tqma8mqnl-mba8mx: Add USB DR overlay")
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > ---
> > Alex:
> >         I have not hardware to run it. I check dtb output is correct.
> > ---
> >  .../imx8mn-tqma8mqnl-mba8mx-usbotg.dtso       | 29 +++++++++++++++++--
> >  1 file changed, 27 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> > index 96db07fc9bece..1f2a0fe70a0a2 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> > +++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> > @@ -29,12 +29,37 @@ usb_dr_connector: endpoint {
> >         };
> >  };
> >
> > +/*
> > + * rst_usb_hub_hog and sel_usb_hub_hog have property 'output-high',
> > + * dt overlay don't support /delete-property/. Both 'output-low' and
> > + * 'output-high' will be exist under hog nodes if overlay file set
> > + * 'output-low'. Workaround is disable these hog and create new hog with
> > + * 'output-low'.
> > + */
> > +
> >  &rst_usb_hub_hog {
> > -       output-low;
> > +       status = "disabled";
> > +};
> > +
> > +&expander0 {
> > +       rst-usb-low-hub-hog {
> > +               gpio-hog;
> > +               gpios = <13 0>;
> > +               output-low;
> > +               line-name = "RST_USB_HUB#";
> > +       };
> >  };
> >
> >  &sel_usb_hub_hog {
> > -       output-low;
> > +       status = "disabled";
> > +};
> > +
> > +&gpio2 {
> > +       sel-usb-low-hub-hog {
> > +               gpio-hog;
> > +               gpios = <1 GPIO_ACTIVE_HIGH>;
> > +               output-low;
> > +       };
> >  };
> >
> >  &usbotg1 {
> 
> Note that after this, there is still
> 
>     /delete-property/ disable-over-current;
> 
> left, which does not actually remove the property.

This is true, I noticed myself. As this patch does not concern about
disable-over-current, it still is an improvement.

Unfortunately there is currently no way to fix this right now. This is a
boolean property, which is impossible to remove in overlays.

Best regards,
Alexander
-- 
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
http://www.tq-group.com/



^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO
  2024-10-25 13:52 ` Geert Uytterhoeven
  2024-10-25 14:00   ` Alexander Stein
@ 2024-10-25 14:05   ` Frank Li
  1 sibling, 0 replies; 6+ messages in thread
From: Frank Li @ 2024-10-25 14:05 UTC (permalink / raw)
  To: Geert Uytterhoeven
  Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	Alexander Stein, open list:TQ SYSTEMS BOARD & DRIVER SUPPORT,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list

On Fri, Oct 25, 2024 at 03:52:58PM +0200, Geert Uytterhoeven wrote:
> Hi Frank,
>
> On Wed, Oct 23, 2024 at 11:07 PM Frank Li <Frank.Li@nxp.com> wrote:
> > Fix the issue where both 'output-low' and 'output-high' exist under GPIO
> > hog nodes  (rst_usb_hub_hog and sel_usb_hub_hog) when applying device
> > tree overlays. Since /delete-property/ is not supported in the overlays,
> > setting 'output-low' results in both properties being present. The
> > workaround is to disable these hogs and create new ones with 'output-low'
> > as needed.
> >
> > Fix below CHECK_DTBS warning:
> > arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtb: sel-usb-hub-hog:
> >    {'output-low': True, 'gpio-hog': True, 'gpios': [[1, 0]], 'output-high': True, 'phandle': 108, '$nodename': ['sel-usb-hub-hog']}
> >        is valid under each of {'required': ['output-low']}, {'required': ['output-high']
> >
> > Fixes: 3f6fc30abebc ("arm64: dts: imx8mn: tqma8mqnl-mba8mx: Add USB DR overlay")
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > ---
> > Alex:
> >         I have not hardware to run it. I check dtb output is correct.
> > ---
> >  .../imx8mn-tqma8mqnl-mba8mx-usbotg.dtso       | 29 +++++++++++++++++--
> >  1 file changed, 27 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> > index 96db07fc9bece..1f2a0fe70a0a2 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> > +++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtso
> > @@ -29,12 +29,37 @@ usb_dr_connector: endpoint {
> >         };
> >  };
> >
> > +/*
> > + * rst_usb_hub_hog and sel_usb_hub_hog have property 'output-high',
> > + * dt overlay don't support /delete-property/. Both 'output-low' and
> > + * 'output-high' will be exist under hog nodes if overlay file set
> > + * 'output-low'. Workaround is disable these hog and create new hog with
> > + * 'output-low'.
> > + */
> > +
> >  &rst_usb_hub_hog {
> > -       output-low;
> > +       status = "disabled";
> > +};
> > +
> > +&expander0 {
> > +       rst-usb-low-hub-hog {
> > +               gpio-hog;
> > +               gpios = <13 0>;
> > +               output-low;
> > +               line-name = "RST_USB_HUB#";
> > +       };
> >  };
> >
> >  &sel_usb_hub_hog {
> > -       output-low;
> > +       status = "disabled";
> > +};
> > +
> > +&gpio2 {
> > +       sel-usb-low-hub-hog {
> > +               gpio-hog;
> > +               gpios = <1 GPIO_ACTIVE_HIGH>;
> > +               output-low;
> > +       };
> >  };
> >
> >  &usbotg1 {
>
> Note that after this, there is still
>
>     /delete-property/ disable-over-current;
>
> left, which does not actually remove the property.
>
> Gr{oetje,eeting}s,

Yes, but it should not impact much. I hope Alex or other tq-group's
engineer can fix it. I have not hardware to test it.

Frank

>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO
  2024-10-23 21:03 [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO Frank Li
  2024-10-24 14:05 ` Alexander Stein
  2024-10-25 13:52 ` Geert Uytterhoeven
@ 2024-11-01 11:40 ` Shawn Guo
  2 siblings, 0 replies; 6+ messages in thread
From: Shawn Guo @ 2024-11-01 11:40 UTC (permalink / raw)
  To: Frank Li
  Cc: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	Alexander Stein, open list:TQ SYSTEMS BOARD & DRIVER SUPPORT,
	open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
	open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
	open list

On Wed, Oct 23, 2024 at 05:03:13PM -0400, Frank Li wrote:
> Fix the issue where both 'output-low' and 'output-high' exist under GPIO
> hog nodes  (rst_usb_hub_hog and sel_usb_hub_hog) when applying device
> tree overlays. Since /delete-property/ is not supported in the overlays,
> setting 'output-low' results in both properties being present. The
> workaround is to disable these hogs and create new ones with 'output-low'
> as needed.
> 
> Fix below CHECK_DTBS warning:
> arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx-usbotg.dtb: sel-usb-hub-hog:
>    {'output-low': True, 'gpio-hog': True, 'gpios': [[1, 0]], 'output-high': True, 'phandle': 108, '$nodename': ['sel-usb-hub-hog']}
>        is valid under each of {'required': ['output-low']}, {'required': ['output-high']
> 
> Fixes: 3f6fc30abebc ("arm64: dts: imx8mn: tqma8mqnl-mba8mx: Add USB DR overlay")
> Signed-off-by: Frank Li <Frank.Li@nxp.com>

Applied, thanks!


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2024-11-01 11:41 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-10-23 21:03 [PATCH 1/1] arm64: dts: imx8mn-tqma8mqnl-mba8mx-usbot: fix coexistence of output-low and output-high in GPIO Frank Li
2024-10-24 14:05 ` Alexander Stein
2024-10-25 13:52 ` Geert Uytterhoeven
2024-10-25 14:00   ` Alexander Stein
2024-10-25 14:05   ` Frank Li
2024-11-01 11:40 ` Shawn Guo

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