From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=74.125.82.171 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794672595; b=MkV8Uz0YMd7IgeYPtfD/nq+CkkJkWOz8ke0RQ1dl2GT4JHivMol+qJnZb1qefjickxr1 g+qpYMmO+maZ3DcdSpBSAXa7AibM77lapBK/x53LO/uedThncehPeMJxPy0t4AEDoBnGZ gNhp9tFNui86KrHkcoIwaQiT6DpOBg4Kq9AHEMfIIZQR/BOomvbzAov7clWrcvvhjaxiu iddoJyLMtrhI3bfx6Mf1CSl2iE4iHTqVG+Z2cTfN8TaZ9vcGjOk0G3Q+Vg94TW9da1kqG E4cI83/vQzyDt3osk+EM7SW+fkYOktVarHGChTgJI0cTQzTa49N1/At/Em6k3KOAOXw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794672595; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=Jd91Zwd/kmiwKW4+PLimd5fenaYkPvHETCW1wh847os=; b=p2u1jQFQbcJdtvNrbcORPXDQ+GsHTX29m4wj1QhC+Cpy6CQ2Mfb+cDkhiXj9bbsXbMC5 de8LTdOa+wyeDvrw6CSbMpkFS/CqmAJP1KawhtxBNBhTLzxSHQ+eMu7C39u6MfwnuyauQ AM+IcVJKXBlSBgrHPlSC8jA9lgPpAmYPSY1ySHvT3woGnMQpVvPO//OAz8eLiWepaUNp9 sNjsCWh4Fm0uRqruvir2Xn8/Oij8r1+wvjBFB0C39+zseeHdfp6vnm+uuxziqhIAiMHZ1 BZonHXIaCyICtufWFsRjFf96X3NpX8dHuytJ7o2+tA1OL3BniUZ1DwHxKpT5KrKQ8dw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=ixFnXvAr; arc=none smtp.remote-ip=74.125.82.171 Received: from mail-dy1-f171.google.com (mail-dy1-f171.google.com [74.125.82.171]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 98512606A329 for ; Sat, 14 Nov 2026 16:09:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 98512606A329 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=ixFnXvAr Received: by mail-dy1-f171.google.com with SMTP id 5a478bee46e88-36f8cdd30beso2135538eec.1 for ; Sat, 14 Nov 2026 08:09:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1794672594; x=1795277394; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=Jd91Zwd/kmiwKW4+PLimd5fenaYkPvHETCW1wh847os=; b=ixFnXvArZqS0nOjkIjfV31W+fUV9CVbdsukSilj8mL0nf75pnBQfkYbbeUnXS03uL1 Ll0LVzsyivFQOIFTeOnzIrR9vhpgzYAlP3qGhyWVaAN5CGvBoC4vvKT07oI/FOtGKjqa UnrgtZ7bUQ3PU2yRRzK7NRoy4zWxkcESr2g8jVXu7/vguPSHcbCGX6vWkmF8/zG2e/Bs 3WM2TlqMOJWqQOv0HQyB0xH84McuETFZLEXaTfc+U6c4hfIOPGNVzrjRw+bRdfqtBB7t cMMbxqGDDQcRSxEDoiO1AkMBt5b3kW6Yl3ZWJdBfA9Z1bB4eecyLwrwQJAaAHVWbxcAj nZIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794672594; x=1795277394; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=Jd91Zwd/kmiwKW4+PLimd5fenaYkPvHETCW1wh847os=; b=umU9R5sXEeqMgDQy7AUqPzfBHgSkJIjYlSZ7Eex9ZeADL5ae0OpVmcGBpoOk474nK4 LPP4KIIG2QTit/BXvItMDEqe5yrVoskhA9jjXTZLq3yaGLK6EdUbRXzfJGNA0tjKL8pK WNU96dLUsPUEBXmDy7fHwz6EGyL+/Nzp5zAD76LAs8OOxoUgCT9aiYBNVi/aKW45b/CO YGUl7M8ZkeNG8APWsDaJEV3bEff3aBxLsqr8j9CxQ7cfgFN5SvvJ3g0A7k7ZH7UPGaen +qTZVeYCaSWvALmtE+smhIs/BQAc9V42bVzCeY+ks5tAWr6ng28attJUOTuvvHRY/EoZ Sfiw== X-Forwarded-Encrypted: i=1; AL+hErHo4wsvPmeuaDWqf89oAV/RYK672b5DXCAYuxZQJSnYbBfKELU5ND1VcCBCg29Qzn9ClTWnYI1YAZQ5XQA=@vger.kernel.org X-Gm-Message-State: APuU4Z/NHyblr8JXyhjGrK8CiVeI4YkxgKkBxQJPdCP7VGC9owkpw1WS SvoNsAHCgzETfXLdvRo5ADg+NZUYwYngjf295+1q5vDHjeZyCHxprFU= X-Gm-Gg: AYBFou29nBvMdXdoD+4k28sCQ2E+jJ+S0VMmSG215rl17OGbEzzP4SKPBu8wIBg7a39 WaH7d3zWQNhETiuDJ2VIIkDfjlme2HaYyFmrmZqfsmTCewvpBVmdu3BjcdqrEgXoY7FhRJtdqQW 5idDJk9wyD+HV8uj4lpHIQbCvRDZf9mHIPDX2nQ5RxFf8DTzdU//hwDVs2IAmqP+vCvboAD/hNl zk9dTBVi3gpTZJwsfB1ptoJ+dJaQBDQO0Pg4TBlt4fzWg4qD5trLzYS72bh8AWyGM1ofG1tDxCV Tq/heO2QYJKlY6G5qOC527275fm/VllmugWHBjQHumR2iSUueGECt7xBuE59802Ew+9SCL0pc4t OoOuFa78mX8upv0xSRfyqj3LLIjABAkyyFRSPRTh6l1zNJa+dJfyHTsXZJjcvjor0lnVvXAS/1z 2jqmUU1cs29tVRpgPfy0uXa314o4dIr2pClUUys/FCUb8I7DCjuWmXrd3NyhI061vPsDdFeboRY El8SrKxsoOylvzCeRq1/0rOA6Heh8TKaGl73NxMfly9+HqCmlYToV2ezQVMLaEf+g8X5/ieRcEB SucpoTHL5uIkPFPUSNsXRtmEIi382cvQDcyFwFsRgj2G+GMRqQt9UDnXyABMlxjSuHm9jFEZ+Uc BO5uKpdWzlvI= X-Received: by 2002:a05:7301:4d16:b0:36a:1d6a:596b with SMTP id 5a478bee46e88-379675feb32mr5897107eec.29.1794672593531; Sat, 14 Nov 2026 08:09:53 -0800 (PST) Received: from at-Standard-PC-Q35-ICH9-2009 ([106.202.127.108]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-37956bb0919sm17567582eec.29.2026.11.14.08.09.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Nov 2026 08:09:53 -0800 (PST) From: Atharva Tiwari To: Cc: Atharva Tiwari , Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), "H. Peter Anvin" , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , David Airlie , Simona Vetter , Harry Wentland , Leo Li , Rodrigo Siqueira , Kenneth Feng , Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Andre Eikmeyer , linux-pci@vger.kernel.org (open list:PCI SUBSYSTEM), linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)), amd-gfx@lists.freedesktop.org (open list:RADEON and AMDGPU DRM DRIVERS), dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), platform-driver-x86@vger.kernel.org (open list:X86 PLATFORM DRIVERS) Subject: [PATCH v2 07/12] platform/apple-gmux: Add documentation about iMacs Date: Sat, 14 Nov 2026 11:06:31 -0500 Message-ID: <20261114160731.3756-8-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261114160731.3756-1-atharvatiwarilinuxdev@gmail.com> References: <20261114160731.3756-1-atharvatiwarilinuxdev@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add documentation about iMacs Signed-off-by: Atharva Tiwari --- drivers/platform/x86/apple-gmux.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index a1b7a4709..4f5c98445 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -444,6 +444,11 @@ static const struct backlight_ops gmux_bl_ops = { * switch the panel and the external DP connector and allocates a framebuffer * for the selected GPU. * + * There is iGPU present on iMac's aswell, and we can enable it using apple-set-os. + * But there arent any display lines going from the iGPU to the display. iGPU is only + * used for offloading then, it makes sense as iMac's display are massive (4K or 5K). + * A integrated GPU won't be able to handle that. + * * .. _US 8,687,007 B2: https://pimg-fpiw.uspto.gov/fdd/07/870/086/0.pdf * .. _NXP CBTL06141: https://www.nxp.com/documents/data_sheet/CBTL06141.pdf * .. _NXP CBTL06142: https://www.nxp.com/documents/data_sheet/CBTL06141.pdf -- 2.55.0