[{"id":3683219,"web_url":"http://patchwork.ozlabs.org/comment/3683219/","msgid":"<CAD++jLk-oJuFzDODKnJ+cdxz=SgorAQhSTcJTVQkvnheH=xNPA@mail.gmail.com>","list_archive_url":null,"date":"2026-04-28T07:56:04","subject":"Re: [PATCH] gpio: ixp4xx: switch to dynamic GPIO base","submitter":{"id":92050,"url":"http://patchwork.ozlabs.org/api/people/92050/","name":"Linus Walleij","email":"linusw@kernel.org"},"content":"On Mon, Apr 27, 2026 at 11:43 PM Mohamed Ayman\n<mohamedaymanworkspace@gmail.com> wrote:\n\n> Most IXP4xx platforms are Device Tree-based, and GPIO consumers\n> use phandle-based descriptors rather than legacy integer GPIO numbers.\n>\n> Audit of the IXP4xx platform shows:\n> - No gpio_request(), gpio_get_value(), or gpio_set_value() users\n>   in arch/arm/mach-ixp4xx/\n> - No platform data using fixed GPIO numbers\n>\n> This switches the gpiochip to dynamic base allocation, aligning\n> with modern gpiolib expectations where GPIO numbers are not globally\n> fixed and may be assigned dynamically.\n>\n> Set gpiochip.base = -1 to allow gpiolib to assign the GPIO base\n> dynamically, avoiding global GPIO number space conflicts.\n>\n> Signed-off-by: Mohamed Ayman <mohamedaymanworkspace@gmail.com>\n\nYou're right and you beat me to it! No-one is dependent on the\nfixed GPIO numbering for this platform.\nReviewed-by: Linus Walleij <linusw@kernel.org>\n\nYours,\nLinus Walleij","headers":{"Return-Path":"\n <linux-gpio+bounces-35648-incoming=patchwork.ozlabs.org@vger.kernel.org>","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=o6We98Hu;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.105.105.114; helo=tor.lore.kernel.org;\n envelope-from=linux-gpio+bounces-35648-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"o6We98Hu\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201"],"Received":["from tor.lore.kernel.org (tor.lore.kernel.org [172.105.105.114])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g4Xx20Zjmz1yHv\n\tfor <incoming@patchwork.ozlabs.org>; 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Tue, 28 Apr 2026\n 00:56:15 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-gpio@vger.kernel.org","List-Id":"<linux-gpio.vger.kernel.org>","List-Subscribe":"<mailto:linux-gpio+subscribe@vger.kernel.org>","List-Unsubscribe":"<mailto:linux-gpio+unsubscribe@vger.kernel.org>","MIME-Version":"1.0","References":"<20260427214311.331996-1-mohamedaymanworkspace@gmail.com>","In-Reply-To":"<20260427214311.331996-1-mohamedaymanworkspace@gmail.com>","From":"Linus Walleij <linusw@kernel.org>","Date":"Tue, 28 Apr 2026 09:56:04 +0200","X-Gmail-Original-Message-ID":"\n <CAD++jLk-oJuFzDODKnJ+cdxz=SgorAQhSTcJTVQkvnheH=xNPA@mail.gmail.com>","X-Gm-Features":"AVHnY4LwETjjfhphkxYPHWzQ2Lf-bDt8NZvOiGfchSau94jYf8YV9Ei_wqqQVfQ","Message-ID":"\n <CAD++jLk-oJuFzDODKnJ+cdxz=SgorAQhSTcJTVQkvnheH=xNPA@mail.gmail.com>","Subject":"Re: [PATCH] gpio: ixp4xx: switch to dynamic GPIO base","To":"Mohamed Ayman <mohamedaymanworkspace@gmail.com>","Cc":"Imre Kaloz <kaloz@openwrt.org>, Bartosz Golaszewski <brgl@kernel.org>,\n\t\"moderated list:ARM/INTEL IXP4XX ARM ARCHITECTURE\"\n <linux-arm-kernel@lists.infradead.org>,\n\t\"open list:GPIO SUBSYSTEM\" <linux-gpio@vger.kernel.org>,\n open list <linux-kernel@vger.kernel.org>","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}},{"id":3683232,"web_url":"http://patchwork.ozlabs.org/comment/3683232/","msgid":"<177736404661.5976.17646360119700458695.b4-ty@oss.qualcomm.com>","list_archive_url":null,"date":"2026-04-28T08:14:50","subject":"Re: [PATCH] gpio: ixp4xx: switch to dynamic GPIO base","submitter":{"id":92196,"url":"http://patchwork.ozlabs.org/api/people/92196/","name":"Bartosz Golaszewski","email":"bartosz.golaszewski@oss.qualcomm.com"},"content":"On Tue, 28 Apr 2026 00:43:10 +0300, Mohamed Ayman wrote:\n> Most IXP4xx platforms are Device Tree-based, and GPIO consumers\n> use phandle-based descriptors rather than legacy integer GPIO numbers.\n> \n> Audit of the IXP4xx platform shows:\n> - No gpio_request(), gpio_get_value(), or gpio_set_value() users\n>   in arch/arm/mach-ixp4xx/\n> - No platform data using fixed GPIO numbers\n> \n> [...]\n\nApplied, thanks!\n\n[1/1] gpio: ixp4xx: switch to dynamic GPIO base\n      https://git.kernel.org/brgl/c/1005d6e0257a5623ef79bfbd8f588b498c1cab0d\n\nBest regards,","headers":{"Return-Path":"\n <linux-gpio+bounces-35654-incoming=patchwork.ozlabs.org@vger.kernel.org>","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=GwwfcYgQ;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=Q8+zYm6N;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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