linux-kernel - Re: [PATCH v2 2/2] dt-bindings: gpio: gpio-xilinx: Mark clocks as required property

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Message-ID: <2fb10aee-6610-43f4-9d12-88a97e0f66e5@kernel.org>
Date: Fri, 13 Jun 2025 13:07:43 +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: Bartosz Golaszewski <brgl@...ev.pl>, Conor Dooley <conor+dt@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>,
 Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
 Srinivas Neeli <srinivas.neeli@....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:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] dt-bindings: gpio: gpio-xilinx: Mark clocks as
 required property

On 13/06/2025 12:12, 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.
> 
> Signed-off-by: Michal Simek <michal.simek@....com>
> ---
> 
> Changes in v2:
> - Add fpga region patch to fix issue which was introduces by this change
> 
> Based on discussion at
> https://lore.kernel.org/lkml/20241002-revivable-crummy-f780adec538c@spud/
> 
> Actually this shouldn't be only targetting GPIO but also for example
> xlnx,xps-timebase-wdt-1.00.a but I would like to check it first on gpio
> before starting to check other bindings.

IIUC, patch #1 is a prerequisite, so you need to squash them. Otherwise
dt_binding_check is not bisectable and we want it to be bisectable.

(dtbs_check does not have to be, as long as linux-next is concerned)

Best regards,
Krzysztof