[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <f6241b58-202e-4624-ae83-ce52fc286edf@linaro.org>
Date: Tue, 19 Dec 2023 16:39:35 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Jan Kiszka <jan.kiszka@...mens.com>, Nishanth Menon <nm@...com>,
Vignesh Raghavendra <vigneshr@...com>, Tero Kristo <kristo@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, Bao Cheng Su <baocheng.su@...mens.com>,
Chao Zeng <chao.zeng@...mens.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, Li Hua Qian <huaqian.li@...mens.com>
Subject: Re: [PATCH 4/4] dts: iot2050: Support IOT2050-SM variant
On 19/12/2023 16:37, Jan Kiszka wrote:
>>>>
>>>> You have label for that... Somehow all these nodes are half-baked,
>>>> without all the expected properties and now you call node name as ABI.
>>>> The node name is not the ABI.
>>>
>>> Well, existing userspace uses those names, and adding the properties
>>> would break that interface. Now, does Linux do that?
>>
>> I don't think you understood the concept. There is no change for
>> userspace. Same interface, same names. No ABI break.
>
> I do understand the impact very well:
> open("/sys/class/leds/user-led1-red") has to work for all the variants,
> consistently and backward-compatible for userspace.
And it will. The name is the same.
Best regards,
Krzysztof
Powered by blists - more mailing lists