From: Dipen Patel <dipenp@nvidia.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Rob Herring <robh@kernel.org>
Cc: thierry.reding@gmail.com, jonathanh@nvidia.com,
linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-gpio@vger.kernel.org, linus.walleij@linaro.org,
devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
timestamp@lists.linux.dev, krzysztof.kozlowski+dt@linaro.org,
brgl@bgdev.pl, corbet@lwn.net, gregkh@linuxfoundation.org
Subject: Re: [PATCH V4 04/10] dt-bindings: timestamp: Add nvidia,gpio-controller
Date: Tue, 4 Apr 2023 10:31:53 -0700 [thread overview]
Message-ID: <023cf280-459a-20af-b6e6-e76f54e2b682@nvidia.com> (raw)
In-Reply-To: <9c49e4a9-0792-bcae-506f-77b5874d4d19@linaro.org>
On 4/3/23 10:33 PM, Krzysztof Kozlowski wrote:
> On 04/04/2023 06:24, Dipen Patel wrote:
>> On 3/25/23 4:09 AM, Krzysztof Kozlowski wrote:
>>> On 24/03/2023 19:51, Dipen Patel wrote:
>>>> On 3/24/23 10:13 AM, Rob Herring wrote:
>>>>> On Wed, Mar 22, 2023 at 06:29:23PM -0700, Dipen Patel wrote:
>>>>>> Introducing nvidia,gpio-controller property from Tegra234 SoCs onwards.
>>>>>> This is done to help below case.
>>>>>>
>>>>>> Without this property code would look like:
>>>>>> if (of_device_is_compatible(dev->of_node, "nvidia,tegra194-gte-aon"))
>>>>>> hte_dev->c = gpiochip_find("tegra194-gpio-aon",
>>>>>> tegra_get_gpiochip_from_name);
>>>>>> else if (of_device_is_compatible(dev->of_node, "nvidia,tegra234-gte-aon"))
>>>>>> hte_dev->c = gpiochip_find("tegra234-gpio-aon",
>>>>>> tegra_get_gpiochip_from_name);
>>>>>> else
>>>>>> return -ENODEV;
>>>>>
>>>>> Or you just put the name in match data.
>>>>
>>>> Not sure I have understood this comment, but "name" the first argument is
>>>> already there to supply to callback to match data. Also, this if else is
>>>> needed to know which "name" to provide.
>>>
>>> The point is that of_device_is_compatible() do not really scale and make
>>> code more difficult to read. Your variant-customization should in
>>> general entirely come from match/driver data.
>>
>> Perhaps I should not have mentioned driver related details here about how
>> this property will help, that detail will go in driver patch. In the next
>> patch series I will remove this commit and just focus on what this property
>> is.
>
> Regardless of this commit, driver match data is the way to go, not
> of_device_is_compatible().
I agree...
>
>
>
> Best regards,
> Krzysztof
>
next prev parent reply other threads:[~2023-04-04 17:33 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-23 1:29 [PATCH V4 00/10] Add Tegra234 HTE support Dipen Patel
2023-03-23 1:29 ` [PATCH V4 01/10] MAINTAINERS: Add HTE/timestamp subsystem details Dipen Patel
2023-03-23 1:29 ` [PATCH V4 02/10] dt-bindings: timestamp: Add Tegra234 support Dipen Patel
2023-03-25 11:04 ` Krzysztof Kozlowski
2023-03-25 11:06 ` Krzysztof Kozlowski
2023-03-23 1:29 ` [PATCH V4 03/10] dt-bindings: timestamp: Deprecate nvidia,slices property Dipen Patel
2023-03-23 8:34 ` Linus Walleij
2023-03-25 11:05 ` Krzysztof Kozlowski
2023-04-03 18:49 ` Dipen Patel
2023-03-23 1:29 ` [PATCH V4 04/10] dt-bindings: timestamp: Add nvidia,gpio-controller Dipen Patel
2023-03-23 8:36 ` Linus Walleij
2023-03-23 13:58 ` Rob Herring
2023-03-24 17:13 ` Rob Herring
2023-03-24 18:51 ` Dipen Patel
2023-03-25 11:09 ` Krzysztof Kozlowski
2023-04-04 4:24 ` Dipen Patel
2023-04-04 5:33 ` Krzysztof Kozlowski
2023-04-04 17:31 ` Dipen Patel [this message]
2023-04-04 10:28 ` Thierry Reding
2023-04-04 17:30 ` Dipen Patel
2023-03-25 11:07 ` Krzysztof Kozlowski
2023-03-27 16:58 ` Dipen Patel
2023-04-04 10:30 ` Thierry Reding
2023-04-04 17:20 ` Dipen Patel
2023-03-23 1:29 ` [PATCH V4 05/10] arm64: tegra: Add Tegra234 GTE nodes Dipen Patel
2023-03-23 1:29 ` [PATCH V4 06/10] hte: Re-phrase tegra API document Dipen Patel
2023-04-05 2:24 ` Bagas Sanjaya
2023-04-06 0:03 ` Dipen Patel
2023-03-23 1:29 ` [PATCH V4 07/10] hte: Add Tegra234 provider Dipen Patel
2023-03-23 1:29 ` [PATCH V4 08/10] hte: Deprecate nvidia,slices property Dipen Patel
2023-03-23 1:29 ` [PATCH V4 09/10] hte: handle nvidia,gpio-controller property Dipen Patel
2023-03-23 8:37 ` Linus Walleij
2023-03-23 1:29 ` [PATCH V4 10/10] gpio: tegra186: Add Tegra234 hte support Dipen Patel
2023-03-23 8:38 ` Linus Walleij
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