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Tue, 03 Nov 2026 08:06:03 -0800 (PST) Received: from at-Standard-PC-Q35-ICH9-2009 ([27.60.19.149]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1aed79b3dfcsm47910609c88.12.2026.11.03.08.05.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Nov 2026 08:06:03 -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, dev@deq.rocks, dri-devel@lists.freedesktop.org, ed@aicharmers.com, kenneth.feng@amd.com, linux-kernel@vger.kernel.org, simona@ffwll.ch Subject: Re: [PATCH v4] drm/amd/pm: defer UCLK DPM on selected Apple Navi GPUs Date: Tue, 3 Nov 2026 11:05:53 -0500 Message-ID: <20261103160553.1431-1-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 > I forgot to remove the pptable check. Can you try a simplified > version of the patch? I think all you need to do is delay the UCLK > DPM enablement until late_init. Something like the attached patch. > > Alex Also, i've tested this patch with the 5K patch, the UCLK then just never gets initialized, so this patch is literally incompatible with 5K. And also if ur wondering, what patch am i talking about you can see it here: https://github.com/t2linux/linux-t2-patches/blob/main/7003-amdgpu-add-support-for-5K.patch I still need to make combine patch (otherwise bad tearing in gnome/mutter), and i need to enable 5K in EFI aswell to remove the shitty quirk to initialize display eariler than smu, And make it usable with simpledrm.