[PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Christian Hewitt]

VIM3L now inherits the sound node from the VIM3 common dtsi but is
an SM1 device, so label it as such, and stop users blaming future
support issues on the distro/app "wrongly detecting" their device.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
---
 arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
index 4b517ca72059..f46f0ecc37ec 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
@@ -32,6 +32,10 @@
 		regulator-boot-on;
 		regulator-always-on;
 	};
+
+	sound {
+		model = "SM1-KHADAS-VIM3L";
+	};
 };
 
 &cpu0 {
-- 
2.17.1

Re: [PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Jerome Brunet]

On Fri 02 Oct 2020 at 16:16, Christian Hewitt <christianshewitt@gmail.com> wrote:

> VIM3L now inherits the sound node from the VIM3 common dtsi but is
> an SM1 device, so label it as such, and stop users blaming future
> support issues on the distro/app "wrongly detecting" their device.
>
> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
> index 4b517ca72059..f46f0ecc37ec 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
> @@ -32,6 +32,10 @@
>  		regulator-boot-on;
>  		regulator-always-on;
>  	};
> +
> +	sound {
> +		model = "SM1-KHADAS-VIM3L";
> +	};

The sound card is the same so I don't see why the sm1 board should have
a different name. If you are not happy with the name, please update it
in the common file.

>  };
>  
>  &cpu0 {

Re: [PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Christian Hewitt]

> On 2 Oct 2020, at 6:44 pm, Jerome Brunet <jbrunet@baylibre.com> wrote:
> 
> On Fri 02 Oct 2020 at 16:16, Christian Hewitt <christianshewitt@gmail.com> wrote:
> 
>> VIM3L now inherits the sound node from the VIM3 common dtsi but is
>> an SM1 device, so label it as such, and stop users blaming future
>> support issues on the distro/app "wrongly detecting" their device.
>> 
>> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
>> ---
>> arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
>> 1 file changed, 4 insertions(+)
>> 
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>> index 4b517ca72059..f46f0ecc37ec 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>> @@ -32,6 +32,10 @@
>> 		regulator-boot-on;
>> 		regulator-always-on;
>> 	};
>> +
>> +	sound {
>> +		model = "SM1-KHADAS-VIM3L";
>> +	};
> 
> The sound card is the same so I don't see why the sm1 board should have
> a different name. If you are not happy with the name, please update it
> in the common file.

It’s a nice-to-have not a must-have, but the current LE images that are
in circulation use 5.7 with the previous board-correct name so I was
looking for continuity. We do see user forum reports (infrequent but
recurring) of wrongly detected hardware with other SoC platforms where
similar name inheritance surfaces the ‘wrong’ device name in GUIs, and
I like anything that avoids support work.

I’d suggest KHADAS-VIM3-VIM3L as a common name, but then it’s the only
device in the current device-tree set that is not prefixed with the SoC
identifier, which (OCD) feels wrong.

Christian

Re: [PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Kevin Hilman]

Christian Hewitt <christianshewitt@gmail.com> writes:

>> On 2 Oct 2020, at 6:44 pm, Jerome Brunet <jbrunet@baylibre.com> wrote:
>> 
>> On Fri 02 Oct 2020 at 16:16, Christian Hewitt <christianshewitt@gmail.com> wrote:
>> 
>>> VIM3L now inherits the sound node from the VIM3 common dtsi but is
>>> an SM1 device, so label it as such, and stop users blaming future
>>> support issues on the distro/app "wrongly detecting" their device.
>>> 
>>> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
>>> ---
>>> arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
>>> 1 file changed, 4 insertions(+)
>>> 
>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>> index 4b517ca72059..f46f0ecc37ec 100644
>>> --- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>> @@ -32,6 +32,10 @@
>>> 		regulator-boot-on;
>>> 		regulator-always-on;
>>> 	};
>>> +
>>> +	sound {
>>> +		model = "SM1-KHADAS-VIM3L";
>>> +	};
>> 
>> The sound card is the same so I don't see why the sm1 board should have
>> a different name. If you are not happy with the name, please update it
>> in the common file.
>
> It’s a nice-to-have not a must-have, but the current LE images that are
> in circulation use 5.7 with the previous board-correct name so I was
> looking for continuity. We do see user forum reports (infrequent but
> recurring) of wrongly detected hardware with other SoC platforms where
> similar name inheritance surfaces the ‘wrong’ device name in GUIs, and
> I like anything that avoids support work.
>
> I’d suggest KHADAS-VIM3-VIM3L as a common name, but then it’s the only
> device in the current device-tree set that is not prefixed with the SoC
> identifier, which (OCD) feels wrong.

True, but turns out there's nothing SoC specific about this sound block
since it's identical across SoCs, so specifying the SoC is being too
specific. 

OTOH, while I agree it looks "wrong", it's pretty common in Linux DT to
have the SoC prefix to mean only that it's "compatible" with that SoC,
not that it *is* that SoC.

However, I agree that that can lead to confusion with end users, so
since this change has not functional change, and only a UX issue in
userspace, I'm fine to apply it.

Kevin

Re: [PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Kevin Hilman]

On Fri, 2 Oct 2020 14:16:19 +0000, Christian Hewitt wrote:
> VIM3L now inherits the sound node from the VIM3 common dtsi but is
> an SM1 device, so label it as such, and stop users blaming future
> support issues on the distro/app "wrongly detecting" their device.

Applied, thanks!

[1/1] arm64: dts: meson: add SM1 soundcard name to VIM3L
      commit: 0fe4c285ef8bd0475da7e288c844cb55fc850970

Best regards,
-- 
Kevin Hilman <khilman@baylibre.com>

Re: [PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Jerome Brunet]

On Fri 02 Oct 2020 at 20:45, Kevin Hilman <khilman@baylibre.com> wrote:

> Christian Hewitt <christianshewitt@gmail.com> writes:
>
>>> On 2 Oct 2020, at 6:44 pm, Jerome Brunet <jbrunet@baylibre.com> wrote:
>>> 
>>> On Fri 02 Oct 2020 at 16:16, Christian Hewitt <christianshewitt@gmail.com> wrote:
>>> 
>>>> VIM3L now inherits the sound node from the VIM3 common dtsi but is
>>>> an SM1 device, so label it as such, and stop users blaming future
>>>> support issues on the distro/app "wrongly detecting" their device.
>>>> 
>>>> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
>>>> ---
>>>> arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
>>>> 1 file changed, 4 insertions(+)
>>>> 
>>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>>> index 4b517ca72059..f46f0ecc37ec 100644
>>>> --- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>>> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>>> @@ -32,6 +32,10 @@
>>>> 		regulator-boot-on;
>>>> 		regulator-always-on;
>>>> 	};
>>>> +
>>>> +	sound {
>>>> +		model = "SM1-KHADAS-VIM3L";
>>>> +	};
>>> 
>>> The sound card is the same so I don't see why the sm1 board should have
>>> a different name. If you are not happy with the name, please update it
>>> in the common file.
>>
>> It’s a nice-to-have not a must-have, but the current LE images that are
>> in circulation use 5.7 with the previous board-correct name so I was
>> looking for continuity. We do see user forum reports (infrequent but
>> recurring) of wrongly detected hardware with other SoC platforms where
>> similar name inheritance surfaces the ‘wrong’ device name in GUIs, and
>> I like anything that avoids support work.
>>
>> I’d suggest KHADAS-VIM3-VIM3L as a common name, but then it’s the only
>> device in the current device-tree set that is not prefixed with the SoC
>> identifier, which (OCD) feels wrong.
>
> True, but turns out there's nothing SoC specific about this sound block
> since it's identical across SoCs, so specifying the SoC is being too
> specific. 
>
> OTOH, while I agree it looks "wrong", it's pretty common in Linux DT to
> have the SoC prefix to mean only that it's "compatible" with that SoC,
> not that it *is* that SoC.
>
> However, I agree that that can lead to confusion with end users, so
> since this change has not functional change, and only a UX issue in
> userspace, I'm fine to apply it.

It is not UX only. This string is used by alsa-utils to match the
card. For example, the string will be matched to restore the controls
settings with alsactl on boot. VIM3 and VIM3L are the same sound card
AFAICT, so it should be the same string.

>
> Kevin

Re: [PATCH] arm64: dts: meson: add SM1 soundcard name to VIM3L

[Kevin Hilman]

Jerome Brunet <jbrunet@baylibre.com> writes:

> On Fri 02 Oct 2020 at 20:45, Kevin Hilman <khilman@baylibre.com> wrote:
>
>> Christian Hewitt <christianshewitt@gmail.com> writes:
>>
>>>> On 2 Oct 2020, at 6:44 pm, Jerome Brunet <jbrunet@baylibre.com> wrote:
>>>> 
>>>> On Fri 02 Oct 2020 at 16:16, Christian Hewitt <christianshewitt@gmail.com> wrote:
>>>> 
>>>>> VIM3L now inherits the sound node from the VIM3 common dtsi but is
>>>>> an SM1 device, so label it as such, and stop users blaming future
>>>>> support issues on the distro/app "wrongly detecting" their device.
>>>>> 
>>>>> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
>>>>> ---
>>>>> arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts | 4 ++++
>>>>> 1 file changed, 4 insertions(+)
>>>>> 
>>>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>>>> index 4b517ca72059..f46f0ecc37ec 100644
>>>>> --- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>>>> +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
>>>>> @@ -32,6 +32,10 @@
>>>>> 		regulator-boot-on;
>>>>> 		regulator-always-on;
>>>>> 	};
>>>>> +
>>>>> +	sound {
>>>>> +		model = "SM1-KHADAS-VIM3L";
>>>>> +	};
>>>> 
>>>> The sound card is the same so I don't see why the sm1 board should have
>>>> a different name. If you are not happy with the name, please update it
>>>> in the common file.
>>>
>>> It’s a nice-to-have not a must-have, but the current LE images that are
>>> in circulation use 5.7 with the previous board-correct name so I was
>>> looking for continuity. We do see user forum reports (infrequent but
>>> recurring) of wrongly detected hardware with other SoC platforms where
>>> similar name inheritance surfaces the ‘wrong’ device name in GUIs, and
>>> I like anything that avoids support work.
>>>
>>> I’d suggest KHADAS-VIM3-VIM3L as a common name, but then it’s the only
>>> device in the current device-tree set that is not prefixed with the SoC
>>> identifier, which (OCD) feels wrong.
>>
>> True, but turns out there's nothing SoC specific about this sound block
>> since it's identical across SoCs, so specifying the SoC is being too
>> specific. 
>>
>> OTOH, while I agree it looks "wrong", it's pretty common in Linux DT to
>> have the SoC prefix to mean only that it's "compatible" with that SoC,
>> not that it *is* that SoC.
>>
>> However, I agree that that can lead to confusion with end users, so
>> since this change has not functional change, and only a UX issue in
>> userspace, I'm fine to apply it.
>
> It is not UX only. This string is used by alsa-utils to match the
> card. For example, the string will be matched to restore the controls
> settings with alsactl on boot. VIM3 and VIM3L are the same sound card
> AFAICT, so it should be the same string.

Ah, OK, thanks for clarifying.   Then I would say if it gets changed, it
gets changed in the common file.

Kevin