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Wed, 04 Nov 2026 12:02:09 -0800 (PST) Received: from at-Standard-PC-Q35-ICH9-2009 ([106.194.66.249]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1b245c4706bsm12453149c88.15.2026.11.04.12.02.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2026 12:02:09 -0800 (PST) From: Atharva Tiwari To: alexdeucher@gmail.com Cc: airlied@gmail.com, alexander.deucher@amd.com, amd-gfx@lists.freedesktop.org, atharvatiwarilinuxdev@gmail.com, christian.koenig@amd.com, dri-devel@lists.freedesktop.org, harry.wentland@amd.com, linux-kernel@vger.kernel.org, simona@ffwll.ch, siqueira@igalia.com, sunpeng.li@amd.com Subject: Re: [PATCH] drm/amd/amdgpu: Add 5K Support for iMac20,1 and iMac20,2 Date: Wed, 4 Nov 2026 15:02:01 -0500 Message-ID: <20261104200201.8358-1-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: References: 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 > What's the reason for this change? This is the code that fixes the SMU boot issue, that we discussed eariler: https://lore.kernel.org/all/20261103160553.1431-1-atharvatiwarilinuxdev@gmail.com/ Its confirmed to be 0x4F1 as OCLP enables it, and with OCLP and no patches it booted fine. I plan to add 5K support to efi libstub or something in the future, hence the TODO, so we get 5K in simpledrm and get rid of this not good looking quirk.