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Sat, 21 Feb 2026 00:48:45 -0800 (PST) MIME-Version: 1.0 References: <20260221034402.69537-1-rosenp@gmail.com> <20260221034402.69537-3-rosenp@gmail.com> <2026022148-unsorted-pushover-8262@gregkh> <2026022126-chair-spout-641a@gregkh> In-Reply-To: <2026022126-chair-spout-641a@gregkh> From: Rosen Penev Date: Sat, 21 Feb 2026 00:48:34 -0800 X-Gm-Features: AaiRm51RjwwZfhQIEJaLMLmlDT-qI7j28uWxDcE_9CBb9uX55P5V7cGqPAMw40E Message-ID: Subject: Re: [PATCH 2/2] Revert "drm/amd/pm: Disable SCLK switching on Oland with high pixel clocks (v3)" To: Greg KH Cc: stable@vger.kernel.org, Kenneth Feng , Alex Deucher , =?UTF-8?Q?Christian_K=C3=B6nig?= , Xinhui Pan , David Airlie , Simona Vetter , "open list:AMD POWERPLAY AND SWSMU" , "open list:DRM DRIVERS" , open list Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, Feb 20, 2026 at 10:33=E2=80=AFPM Greg KH wrote: > > On Fri, Feb 20, 2026 at 09:52:29PM -0800, Rosen Penev wrote: > > On Fri, Feb 20, 2026 at 9:41=E2=80=AFPM Greg KH wrote: > > > > > > On Fri, Feb 20, 2026 at 07:44:02PM -0800, Rosen Penev wrote: > > > > This reverts commit 0bb91bed82d414447f2e56030d918def6383c026. > > > > > > > > This commit breaks stable kernels older than 6.18 that are booted w= ith > > > > radeon.si_support=3D0 amdgpu.si_support=3D1 amdgpu.dc=3D1 > > > > > > > > In 6.17, threre are further commits that are needed to get the DC > > > > codepath in amdgpu for Southern Islands GPUs working but they seem = to be > > > > too much of a hastle to backport cleanly. The simplest solution is = to > > > > revert this problematic commit > > > > > > Ok, this is better, but still, this only applies to 6.12.y, right? > > The reverted commit (or rather the one from master) was backported to > > at least 6.12 and 6.6. I didn't check what other kernels include it. > > I see it in the following kernel releases: > 6.1.156 6.6.112 6.12.53 6.17.3 6.18 > > All except 6.17.y is currently being supported. Yes. I complained about 6.17 being broken at the time and luckily the proper fixes got backported to 6.17. There's no issue there. Those fixes are too involved to be cleanly backported to older kernels, hence the revert being needed. I'll mention 6.1 in v2. > > thanks, > > greg k-h