diff mbox series

[v5,3/3] ARM: dts: marvell: Add 7-segment LED display on x530

Message ID 20240306235021.976083-4-chris.packham@alliedtelesis.co.nz
State Superseded
Headers show
Series auxdisplay: 7-segment LED display | expand

Commit Message

Chris Packham March 6, 2024, 11:50 p.m. UTC
The Allied Telesis x530 products have a 7-segment LED display which is
used for node identification when the devices are stacked. Represent
this as a gpio-7-segment device.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---

Notes:
    Changes in v5:
    - group GPIO specifiers
    Changes in v4:
    - Use correct compatible name in commit message
    Changes in v3:
    - Use compatible = "gpio-7-segment" as suggested by Rob
    Changes in v2:
    - Use compatible = "generic-gpio-7seg" to keep checkpatch.pl happy

 arch/arm/boot/dts/marvell/armada-385-atl-x530.dts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

Comments

Gregory CLEMENT March 8, 2024, 7:36 a.m. UTC | #1
Chris Packham <chris.packham@alliedtelesis.co.nz> writes:

> The Allied Telesis x530 products have a 7-segment LED display which is
> used for node identification when the devices are stacked. Represent
> this as a gpio-7-segment device.
>
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>

Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>

Normally, this patch should be taken in mvebu and then merged by
arm-soc. However, I haven't seen any other patch touching this file (so
no risk of merge conflict) and I think it's too late for me to make a
new pull request to arm-soc. So I'm not against it being taken with the
rest of the patches. However, I think it would be a good idea to see
what Arnd thinks about it.

Gregory

> ---
>
> Notes:
>     Changes in v5:
>     - group GPIO specifiers
>     Changes in v4:
>     - Use correct compatible name in commit message
>     Changes in v3:
>     - Use compatible = "gpio-7-segment" as suggested by Rob
>     Changes in v2:
>     - Use compatible = "generic-gpio-7seg" to keep checkpatch.pl happy
>
>  arch/arm/boot/dts/marvell/armada-385-atl-x530.dts | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts
> index 5a9ab8410b7b..2fb7304039be 100644
> --- a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts
> +++ b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts
> @@ -43,6 +43,17 @@ uart0: serial@12000 {
>  			};
>  		};
>  	};
> +
> +	led-7seg {
> +		compatible = "gpio-7-segment";
> +		segment-gpios = <&led_7seg_gpio 0 GPIO_ACTIVE_LOW>,
> +				<&led_7seg_gpio 1 GPIO_ACTIVE_LOW>,
> +				<&led_7seg_gpio 2 GPIO_ACTIVE_LOW>,
> +				<&led_7seg_gpio 3 GPIO_ACTIVE_LOW>,
> +				<&led_7seg_gpio 4 GPIO_ACTIVE_LOW>,
> +				<&led_7seg_gpio 5 GPIO_ACTIVE_LOW>,
> +				<&led_7seg_gpio 6 GPIO_ACTIVE_LOW>;
> +	};
>  };
>  
>  &pciec {
> @@ -149,7 +160,7 @@ i2c@3 {
>  			#size-cells = <0>;
>  			reg = <3>;
>  
> -			gpio@20 {
> +			led_7seg_gpio: gpio@20 {
>  				compatible = "nxp,pca9554";
>  				gpio-controller;
>  				#gpio-cells = <2>;
> -- 
> 2.43.2
>
Andy Shevchenko March 8, 2024, 9:56 a.m. UTC | #2
On Fri, Mar 8, 2024 at 9:36 AM Gregory CLEMENT
<gregory.clement@bootlin.com> wrote:
>
> Chris Packham <chris.packham@alliedtelesis.co.nz> writes:
>
> > The Allied Telesis x530 products have a 7-segment LED display which is
> > used for node identification when the devices are stacked. Represent
> > this as a gpio-7-segment device.
> >
> > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
>
> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
>
> Normally, this patch should be taken in mvebu and then merged by
> arm-soc. However, I haven't seen any other patch touching this file (so
> no risk of merge conflict) and I think it's too late for me to make a
> new pull request to arm-soc. So I'm not against it being taken with the
> rest of the patches. However, I think it would be a good idea to see
> what Arnd thinks about it.

Arnd wasn't Cc'ed, now I added him.
Arnd Bergmann March 8, 2024, 10:18 a.m. UTC | #3
On Fri, Mar 8, 2024, at 10:56, Andy Shevchenko wrote:
> On Fri, Mar 8, 2024 at 9:36 AM Gregory CLEMENT
> <gregory.clement@bootlin.com> wrote:
>>
>> Chris Packham <chris.packham@alliedtelesis.co.nz> writes:
>>
>> > The Allied Telesis x530 products have a 7-segment LED display which is
>> > used for node identification when the devices are stacked. Represent
>> > this as a gpio-7-segment device.
>> >
>> > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
>>
>> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
>>
>> Normally, this patch should be taken in mvebu and then merged by
>> arm-soc. However, I haven't seen any other patch touching this file (so
>> no risk of merge conflict) and I think it's too late for me to make a
>> new pull request to arm-soc. So I'm not against it being taken with the
>> rest of the patches. However, I think it would be a good idea to see
>> what Arnd thinks about it.
>
> Arnd wasn't Cc'ed, now I added him.

I already have a 'late' branch for stuff that for some reason
was too late be part of the normal pull requests but should
still make it into 6.9. If this one is important, I don't
mind taking it.

On the other hand, from the patch description this one doesn't
seem that urgent, so I don't see much harm in delaying it
to v6.10, and using the normal process for it.

     Arnd
Andy Shevchenko March 8, 2024, 10:34 a.m. UTC | #4
On Fri, Mar 8, 2024 at 12:19 PM Arnd Bergmann <arnd@kernel.org> wrote:
> On Fri, Mar 8, 2024, at 10:56, Andy Shevchenko wrote:
> > On Fri, Mar 8, 2024 at 9:36 AM Gregory CLEMENT
> > <gregory.clement@bootlin.com> wrote:
> >> Chris Packham <chris.packham@alliedtelesis.co.nz> writes:
> >>
> >> > The Allied Telesis x530 products have a 7-segment LED display which is
> >> > used for node identification when the devices are stacked. Represent
> >> > this as a gpio-7-segment device.
> >> >
> >> > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
> >>
> >> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
> >>
> >> Normally, this patch should be taken in mvebu and then merged by
> >> arm-soc. However, I haven't seen any other patch touching this file (so
> >> no risk of merge conflict) and I think it's too late for me to make a
> >> new pull request to arm-soc. So I'm not against it being taken with the
> >> rest of the patches. However, I think it would be a good idea to see
> >> what Arnd thinks about it.
> >
> > Arnd wasn't Cc'ed, now I added him.
>
> I already have a 'late' branch for stuff that for some reason
> was too late be part of the normal pull requests but should
> still make it into 6.9. If this one is important, I don't
> mind taking it.
>
> On the other hand, from the patch description this one doesn't
> seem that urgent, so I don't see much harm in delaying it
> to v6.10, and using the normal process for it.

Thanks, I will defer this one then.
Chris, please handle this one after v6.9-rc1 is out. The first two I'm
going to take today.
Chris Packham March 10, 2024, 8:22 p.m. UTC | #5
On 8/03/24 23:34, Andy Shevchenko wrote:
> On Fri, Mar 8, 2024 at 12:19 PM Arnd Bergmann <arnd@kernel.org> wrote:
>> On Fri, Mar 8, 2024, at 10:56, Andy Shevchenko wrote:
>>> On Fri, Mar 8, 2024 at 9:36 AM Gregory CLEMENT
>>> <gregory.clement@bootlin.com> wrote:
>>>> Chris Packham <chris.packham@alliedtelesis.co.nz> writes:
>>>>
>>>>> The Allied Telesis x530 products have a 7-segment LED display which is
>>>>> used for node identification when the devices are stacked. Represent
>>>>> this as a gpio-7-segment device.
>>>>>
>>>>> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
>>>> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
>>>>
>>>> Normally, this patch should be taken in mvebu and then merged by
>>>> arm-soc. However, I haven't seen any other patch touching this file (so
>>>> no risk of merge conflict) and I think it's too late for me to make a
>>>> new pull request to arm-soc. So I'm not against it being taken with the
>>>> rest of the patches. However, I think it would be a good idea to see
>>>> what Arnd thinks about it.
>>> Arnd wasn't Cc'ed, now I added him.
>> I already have a 'late' branch for stuff that for some reason
>> was too late be part of the normal pull requests but should
>> still make it into 6.9. If this one is important, I don't
>> mind taking it.
>>
>> On the other hand, from the patch description this one doesn't
>> seem that urgent, so I don't see much harm in delaying it
>> to v6.10, and using the normal process for it.
> Thanks, I will defer this one then.
> Chris, please handle this one after v6.9-rc1 is out. The first two I'm
> going to take today.
>
No problem. I can send the dts changes separately.

FYI ./scripts/get_maintainer.pl -f arch/arm/boot/dts/marvell isn't 
picking up Arnd should it?
Arnd Bergmann March 11, 2024, 6:02 a.m. UTC | #6
On Sun, Mar 10, 2024, at 21:22, Chris Packham wrote:
> On 8/03/24 23:34, Andy Shevchenko wrote:
>> On Fri, Mar 8, 2024 at 12:19 PM Arnd Bergmann <arnd@kernel.org> wrote:
>>> On Fri, Mar 8, 2024, at 10:56, Andy Shevchenko wrote:
>>>> On Fri, Mar 8, 2024 at 9:36 AM Gregory CLEMENT <gregory.clement@bootlin.com> wrote:
>>>>>
>>>>> Normally, this patch should be taken in mvebu and then merged by
>>>>> arm-soc. However, I haven't seen any other patch touching this file (so
>>>>> no risk of merge conflict) and I think it's too late for me to make a
>>>>> new pull request to arm-soc. So I'm not against it being taken with the
>>>>> rest of the patches. However, I think it would be a good idea to see
>>>>> what Arnd thinks about it.
>
> FYI ./scripts/get_maintainer.pl -f arch/arm/boot/dts/marvell isn't 
> picking up Arnd should it?

No, as Gregory writes, the intended way for platform specific
patches is to go through the maintainer for that platform,
in this case him, who then sends pull requests to me.

Since it was late in the merge window, he suggested skipping
this step as an exception, which is something we can always do
if there is an important reason, just like you skip can all
maintainers and go directly to Linus if necessary, but the
maintainers file only documents the normal case.

     Arnd
Chris Packham March 11, 2024, 7:54 p.m. UTC | #7
On 11/03/24 19:02, Arnd Bergmann wrote:
> On Sun, Mar 10, 2024, at 21:22, Chris Packham wrote:
>> On 8/03/24 23:34, Andy Shevchenko wrote:
>>> On Fri, Mar 8, 2024 at 12:19 PM Arnd Bergmann <arnd@kernel.org> wrote:
>>>> On Fri, Mar 8, 2024, at 10:56, Andy Shevchenko wrote:
>>>>> On Fri, Mar 8, 2024 at 9:36 AM Gregory CLEMENT <gregory.clement@bootlin.com> wrote:
>>>>>> Normally, this patch should be taken in mvebu and then merged by
>>>>>> arm-soc. However, I haven't seen any other patch touching this file (so
>>>>>> no risk of merge conflict) and I think it's too late for me to make a
>>>>>> new pull request to arm-soc. So I'm not against it being taken with the
>>>>>> rest of the patches. However, I think it would be a good idea to see
>>>>>> what Arnd thinks about it.
>> FYI ./scripts/get_maintainer.pl -f arch/arm/boot/dts/marvell isn't
>> picking up Arnd should it?
> No, as Gregory writes, the intended way for platform specific
> patches is to go through the maintainer for that platform,
> in this case him, who then sends pull requests to me.
>
> Since it was late in the merge window, he suggested skipping
> this step as an exception, which is something we can always do
> if there is an important reason, just like you skip can all
> maintainers and go directly to Linus if necessary, but the
> maintainers file only documents the normal case.

OK thanks for the clarification.

I don't think there is any reason to rush this. I'll send a new series 
for this DTS change and one other that I have for the x530 via Gregory 
and it can come through for either 6.9 or 6.10.
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts
index 5a9ab8410b7b..2fb7304039be 100644
--- a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts
+++ b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts
@@ -43,6 +43,17 @@  uart0: serial@12000 {
 			};
 		};
 	};
+
+	led-7seg {
+		compatible = "gpio-7-segment";
+		segment-gpios = <&led_7seg_gpio 0 GPIO_ACTIVE_LOW>,
+				<&led_7seg_gpio 1 GPIO_ACTIVE_LOW>,
+				<&led_7seg_gpio 2 GPIO_ACTIVE_LOW>,
+				<&led_7seg_gpio 3 GPIO_ACTIVE_LOW>,
+				<&led_7seg_gpio 4 GPIO_ACTIVE_LOW>,
+				<&led_7seg_gpio 5 GPIO_ACTIVE_LOW>,
+				<&led_7seg_gpio 6 GPIO_ACTIVE_LOW>;
+	};
 };
 
 &pciec {
@@ -149,7 +160,7 @@  i2c@3 {
 			#size-cells = <0>;
 			reg = <3>;
 
-			gpio@20 {
+			led_7seg_gpio: gpio@20 {
 				compatible = "nxp,pca9554";
 				gpio-controller;
 				#gpio-cells = <2>;