linux-kernel - Re: [PATCH v3] dt-bindings: gpio: gpio-xilinx: Mark clocks as required property

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Message-ID: <b9457391-9c09-4055-9daa-ee40c3648679@kernel.org>
Date: Mon, 16 Jun 2025 10:07:37 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Michal Simek <michal.simek@....com>, linux-kernel@...r.kernel.org,
 monstr@...str.eu, michal.simek@...inx.com, git@...inx.com
Cc: Xu Yilun <yilun.xu@...el.com>, Bartosz Golaszewski <brgl@...ev.pl>,
 Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Linus Walleij <linus.walleij@...aro.org>,
 Moritz Fischer <mdf@...nel.org>, Rob Herring <robh@...nel.org>,
 Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
 Srinivas Neeli <srinivas.neeli@....com>, Tom Rix <trix@...hat.com>,
 Wu Hao <hao.wu@...el.com>,
 "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
 <devicetree@...r.kernel.org>,
 "moderated list:ARM/ZYNQ ARCHITECTURE"
 <linux-arm-kernel@...ts.infradead.org>,
 "open list:FPGA MANAGER FRAMEWORK" <linux-fpga@...r.kernel.org>,
 "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH v3] dt-bindings: gpio: gpio-xilinx: Mark clocks as
 required property

On 16/06/2025 09:43, Michal Simek wrote:
> On Microblaze platforms there is no need to handle clocks because the
> system is starting with clocks enabled (can be described via fixed clock
> node or clock-frequency property or not described at all).
> With using soft IPs with SOC platforms there is mandatory to handle clocks
> as is explained in commit 60dbdc6e08d6 ("dt-bindings: net: emaclite: Add
> clock support").
> That's why make clock as required in dt binding because it is present in
> both configurations and should be described even there is no way how to
> handle it on Microblaze systems.
> 
> There is also need to describe missing axi gpio clock in fpga-region.yaml
> not to introduce new error when make dt_binding_check runs.
> 
> Signed-off-by: Michal Simek <michal.simek@....com>
> Reviewed-by: Xu Yilun <yilun.xu@...el.com> # fpga
> ---
> 

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof