From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Jan Kiszka <jan.kiszka@siemens.com>, Nishanth Menon <nm@ti.com>,
Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Bao Cheng Su <baocheng.su@siemens.com>,
Chao Zeng <chao.zeng@siemens.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
Li Hua Qian <huaqian.li@siemens.com>
Subject: Re: [PATCH 4/4] dts: iot2050: Support IOT2050-SM variant
Date: Tue, 19 Dec 2023 16:39:35 +0100 [thread overview]
Message-ID: <f6241b58-202e-4624-ae83-ce52fc286edf@linaro.org> (raw)
In-Reply-To: <62be89bb-1ae1-4bf6-9f9e-b6eb68e6504d@siemens.com>
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
next prev parent reply other threads:[~2023-12-19 15:39 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-18 16:35 [PATCH 0/4] arm64: dts: iot2050: Add support for new SM variant Jan Kiszka
2023-12-18 16:35 ` [PATCH 1/4] dt-bindings: arm: ti: Add binding for Siemens IOT2050 " Jan Kiszka
2023-12-19 7:50 ` Krzysztof Kozlowski
2023-12-18 16:35 ` [PATCH 2/4] arm64: dts: ti: iot2050: Disable R5 lockstep for all PG2 boards Jan Kiszka
2023-12-18 16:35 ` [PATCH 3/4] arm64: dts: ti: iot2050: Factor out arduino connector bits Jan Kiszka
2023-12-19 7:51 ` Krzysztof Kozlowski
2023-12-19 8:06 ` Jan Kiszka
2023-12-19 8:12 ` Krzysztof Kozlowski
2023-12-19 8:18 ` Jan Kiszka
2023-12-18 16:36 ` [PATCH 4/4] dts: iot2050: Support IOT2050-SM variant Jan Kiszka
2023-12-19 7:54 ` Krzysztof Kozlowski
2023-12-19 8:22 ` Jan Kiszka
2023-12-19 8:48 ` Krzysztof Kozlowski
2023-12-19 9:03 ` Jan Kiszka
2023-12-19 9:45 ` Krzysztof Kozlowski
2023-12-19 9:50 ` Krzysztof Kozlowski
2023-12-19 9:54 ` Jan Kiszka
2023-12-19 9:56 ` Jan Kiszka
2023-12-19 9:58 ` Krzysztof Kozlowski
2023-12-19 15:37 ` Jan Kiszka
2023-12-19 15:39 ` Krzysztof Kozlowski [this message]
2023-12-19 15:40 ` Jan Kiszka
2023-12-19 15:42 ` Krzysztof Kozlowski
2023-12-19 15:48 ` Jan Kiszka
2023-12-19 15:56 ` Krzysztof Kozlowski
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