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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 08/13] platform/apple-gmux: Add documentation about iMacs Date: Sat, 24 Oct 2026 23:59:44 -0400 Message-ID: <20261025040046.1602-9-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261025040046.1602-1-atharvatiwarilinuxdev@gmail.com> References: <20261025040046.1602-1-atharvatiwarilinuxdev@gmail.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "dri-devel" X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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 dda281f2f..9f0e9ecbf 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -453,6 +453,11 @@ 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