From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 953162D8798; Wed, 4 Feb 2026 15:33:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770219232; cv=none; b=K2+3waamZUlXPe0uyqUK+CE3ieSgyT+4VzjU0ubHBcGW3+DeGMhHu6CXwCYFFSC2nGrjrBDllpC+kM0ySI2tUj6wp6JMsOtRU0N0j4ZQt8V/4UG0D6e7mpFdXZPiBQf8imqToM+AgvMMf0c/0IqPnD2KZlYk1wqtmZ0Gjzgh0jE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770219232; c=relaxed/simple; bh=onCuazh6dKoBcRJFaqsbNngjaJBFVrc/0zEgYpyS/8s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M+6TGTxruujrhifRlRwzBylJyFwdbV5GPoAwf8PMC8AgGfUvJ3WHeNVB8RWXupRL12LjTtLJ7m1Fl2a3w8YXQOKP0+rDvINhspOpFKly/cMwJSeCRjache5+xGcnb4r0xqLmC/OQPyp/orA2TNczZqDrJTeBmI9wu/oGF+RtuJk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jLBlV4Kg; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jLBlV4Kg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0333BC4CEF7; Wed, 4 Feb 2026 15:33:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770219232; bh=onCuazh6dKoBcRJFaqsbNngjaJBFVrc/0zEgYpyS/8s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jLBlV4KgeGKDwjKZqd5hbh1eWqdsH5bEebtzR6MNBdyOkH+bL+nRooQlRj5d6O+Rp inw9QIJpPVl6Kt9Y0NaJq+o5T3cKAbP3bWPUe1VtwkaG3LPbbz9jJ8W2PqkmS/qKqN h3R9shpSOQEhUxihl58shEK6o8IGzrS0kqGlOqs4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jesse Zhang , Alex Deucher Subject: [PATCH 6.18 107/122] drm/amdgpu/soc21: fix xclk for APUs Date: Wed, 4 Feb 2026 15:41:29 +0100 Message-ID: <20260204143855.702830926@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260204143851.857060534@linuxfoundation.org> References: <20260204143851.857060534@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher commit e7fbff9e7622a00c2b53cb14df481916f0019742 upstream. The reference clock is supposed to be 100Mhz, but it appears to actually be slightly lower (99.81Mhz). Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/14451 Reviewed-by: Jesse Zhang Signed-off-by: Alex Deucher (cherry picked from commit 637fee3954d4bd509ea9d95ad1780fc174489860) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/soc21.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/amdgpu/soc21.c +++ b/drivers/gpu/drm/amd/amdgpu/soc21.c @@ -225,7 +225,13 @@ static u32 soc21_get_config_memsize(stru static u32 soc21_get_xclk(struct amdgpu_device *adev) { - return adev->clock.spll.reference_freq; + u32 reference_clock = adev->clock.spll.reference_freq; + + /* reference clock is actually 99.81 Mhz rather than 100 Mhz */ + if ((adev->flags & AMD_IS_APU) && reference_clock == 10000) + return 9981; + + return reference_clock; }