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Sat, 24 Oct 2026 21:03:14 -0700 (PDT) Received: from at-Standard-PC-Q35-ICH9-2009 ([106.221.76.40]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-198a32ff780sm11635283c88.22.2026.10.24.21.03.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Oct 2026 21:03:14 -0700 (PDT) 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 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-Mailing-List: linux-pci@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 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