From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C4709C9EC8D for ; Mon, 12 Jan 2026 16:10:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=z3GYzOOFhYIdEsju1xbpLkXNvyrsB/91rJ5bPiz+oe0=; b=al/TmLOgFCV+p+bhyLZP70Kmbo 7fZIHh3Dk5559FBtWmzSQ2ydAiD+ze+NwnYYiFYuUqp0lcwIy6N3FHe3H6oeXJhLuSiAEuE7k69HQ yucfkEBrQowZ5/m1bMzp1+xJb65p0ld43tW34k0MTEsrrQ0D5yzJlk/WwLSC1heHkT06X4nETYfTs pZV3sSqw5OL6silCPrKXPt8kK99idXabyqgS0nLFQTNqSEetLbrYNSc0hZGV2Gy3/5ZmV73e2Tqa8 lTAforgYK7n7zgyCngKoVTWqX4cK+4SWorjv3cBsipmx7YxNPfLhUvW1kiWDAccsyUisZA1lpoeQ4 K43O8J7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vfKVI-00000005hTP-3u9d; Mon, 12 Jan 2026 16:10:52 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vfKVG-00000005hT6-2W0g for linux-arm-kernel@lists.infradead.org; Mon, 12 Jan 2026 16:10:50 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 678AC6000A; Mon, 12 Jan 2026 16:10:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31948C116D0; Mon, 12 Jan 2026 16:10:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768234249; bh=mgpj2TIPozPmj272al0hyX46YOdsg7JrFzwq3WOQA9w=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=op9GvPJmyz8v6RI55sz8xBSs420fWAU+4QlSBKhwdrx6kb3c5Msg/7KczNsA69N9a xJ6/H0Dpqmzs4ghombWdFhAUJLI9cXd7JbWnhcy0/HCHzMyR+ulAGo2Bv/eIO16N6e cbNSSga2TZY5Fi/LU7+1aW3dsv3xSXmqYpRoy25Q534nlnfNkXthVUWVHheYK5D+Yf XmLSyYmfx6Y+6DWWBHwMEtdX8pNhBbGTYhS/NF5fag4Zz4kH4j72f3wVeq2AFUHkuh mSy4qy11aCBeZxDYrOlaS7E5GjXlg8dQNct6prBCjLlOq+GodJa44unKxId8evDtdX hDQGRT4+nxe/g== Message-ID: <66f6aeea-54da-4eec-930d-57b16e4547fa@kernel.org> Date: Mon, 12 Jan 2026 17:10:42 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 02/11] dt-bindings: pinctrl: document access-controllers property for stm32 HDP To: Gatien CHEVALLIER , Suzuki K Poulose , Mike Leach , James Clark , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mathieu Poirier , Leo Yan , =?UTF-8?Q?Cl=C3=A9ment_Le_Goffic?= , Linus Walleij , Maxime Coquelin , Alexandre Torgue Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com References: <20260109-debug_bus-v1-0-8f2142b5a738@foss.st.com> <20260109-debug_bus-v1-2-8f2142b5a738@foss.st.com> <322e13df-5146-4dab-8f2a-6c635c82eb70@kernel.org> <09845133-5f71-4e1a-af0f-f90ad80ed8bd@foss.st.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJoF1BKBQkWlnSaAAoJEBuTQ307 QWKbHukP/3t4tRp/bvDnxJfmNdNVn0gv9ep3L39IntPalBFwRKytqeQkzAju0whYWg+R/rwp +r2I1Fzwt7+PTjsnMFlh1AZxGDmP5MFkzVsMnfX1lGiXhYSOMP97XL6R1QSXxaWOpGNCDaUl ajorB0lJDcC0q3xAdwzRConxYVhlgmTrRiD8oLlSCD5baEAt5Zw17UTNDnDGmZQKR0fqLpWy 786Lm5OScb7DjEgcA2PRm17st4UQ1kF0rQHokVaotxRM74PPDB8bCsunlghJl1DRK9s1aSuN hL1Pv9VD8b4dFNvCo7b4hfAANPU67W40AaaGZ3UAfmw+1MYyo4QuAZGKzaP2ukbdCD/DYnqi tJy88XqWtyb4UQWKNoQqGKzlYXdKsldYqrLHGoMvj1UN9XcRtXHST/IaLn72o7j7/h/Ac5EL 8lSUVIG4TYn59NyxxAXa07Wi6zjVL1U11fTnFmE29ALYQEXKBI3KUO1A3p4sQWzU7uRmbuxn naUmm8RbpMcOfa9JjlXCLmQ5IP7Rr5tYZUCkZz08LIfF8UMXwH7OOEX87Y++EkAB+pzKZNNd hwoXulTAgjSy+OiaLtuCys9VdXLZ3Zy314azaCU3BoWgaMV0eAW/+gprWMXQM1lrlzvwlD/k whyy9wGf0AEPpLssLVt9VVxNjo6BIkt6d1pMg6mHsUEVzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmgXUF8FCRaWWyoACgkQG5NDfTtBYptO0w//dlXJs5/42hAXKsk+PDg3wyEFb4NpyA1v qmx7SfAzk9Hf6lWwU1O6AbqNMbh6PjEwadKUk1m04S7EjdQLsj/MBSgoQtCT3MDmWUUtHZd5 RYIPnPq3WVB47GtuO6/u375tsxhtf7vt95QSYJwCB+ZUgo4T+FV4hquZ4AsRkbgavtIzQisg Dgv76tnEv3YHV8Jn9mi/Bu0FURF+5kpdMfgo1sq6RXNQ//TVf8yFgRtTUdXxW/qHjlYURrm2 H4kutobVEIxiyu6m05q3e9eZB/TaMMNVORx+1kM3j7f0rwtEYUFzY1ygQfpcMDPl7pRYoJjB dSsm0ZuzDaCwaxg2t8hqQJBzJCezTOIkjHUsWAK+tEbU4Z4SnNpCyM3fBqsgYdJxjyC/tWVT AQ18NRLtPw7tK1rdcwCl0GFQHwSwk5pDpz1NH40e6lU+NcXSeiqkDDRkHlftKPV/dV+lQXiu jWt87ecuHlpL3uuQ0ZZNWqHgZoQLXoqC2ZV5KrtKWb/jyiFX/sxSrodALf0zf+tfHv0FZWT2 zHjUqd0t4njD/UOsuIMOQn4Ig0SdivYPfZukb5cdasKJukG1NOpbW7yRNivaCnfZz6dTawXw XRIV/KDsHQiyVxKvN73bThKhONkcX2LWuD928tAR6XMM2G5ovxLe09vuOzzfTWQDsm++9UKF a/A= In-Reply-To: <09845133-5f71-4e1a-af0f-f90ad80ed8bd@foss.st.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 12/01/2026 09:24, Gatien CHEVALLIER wrote: > > > On 1/11/26 12:27, Krzysztof Kozlowski wrote: >> On 09/01/2026 11:55, Gatien Chevallier wrote: >>> HDP being functional depends on the debug configuration on the platform >>> that can be checked using the access-controllers property, document it. >>> >>> Signed-off-by: Gatien Chevallier >>> --- >>> Documentation/devicetree/bindings/pinctrl/st,stm32-hdp.yaml | 4 ++++ >>> 1 file changed, 4 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-hdp.yaml b/Documentation/devicetree/bindings/pinctrl/st,stm32-hdp.yaml >>> index 845b6b7b7552..75054c1e4044 100644 >>> --- a/Documentation/devicetree/bindings/pinctrl/st,stm32-hdp.yaml >>> +++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-hdp.yaml >>> @@ -27,6 +27,10 @@ properties: >>> clocks: >>> maxItems: 1 >>> >>> + access-controllers: >>> + minItems: 1 >>> + maxItems: 2 >> >> You need to list the items. Why is this flexible? >> >> Best regards, >> Krzysztof > > I will need to list 2 items (2 different firewall controllers) > for the stm32mp2x series that I planned doing in a second time. > > On stm32mp1x series, only debug configuration needs to be checked > for this peripheral. On stm32mp2x series, both debug and RIFSC > (which is the peripheral firewall) configurations need to be checked. > > By listing, you mean adding the description of each of the possible > access controller, am I right? items with "- description: foo bar" for each, so each is strictly defined. I doubt that you can hook it into any access controller... > > Can I keep it like this or do I introduce the flexibility when needed? Lists should not be flexible but rather constrained per each device. With loose approach here you only force quite restrictive driver behavior, although not sure if it matters now for Linux. Best regards, Krzysztof