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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b734fdae69fsm1066684766b.51.2025.11.17.06.11.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Nov 2025 06:11:44 -0800 (PST) Message-ID: Date: Mon, 17 Nov 2025 15:11:40 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 11/20] drm/msm/a6xx: Improve MX rail fallback in RPMH vote init To: Akhil P Oommen , Rob Clark , Bjorn Andersson , Konrad Dybcio , Sean Paul , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter , Jonathan Marek , Jordan Crouse , Will Deacon , Robin Murphy , Joerg Roedel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Connor Abbott Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org References: <20251114-kaana-gpu-support-v3-0-92300c7ec8ff@oss.qualcomm.com> <20251114-kaana-gpu-support-v3-11-92300c7ec8ff@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20251114-kaana-gpu-support-v3-11-92300c7ec8ff@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: c2EYR2Wg2oO13FYTmhI64TUJw5vpfk0p X-Proofpoint-ORIG-GUID: c2EYR2Wg2oO13FYTmhI64TUJw5vpfk0p X-Authority-Analysis: v=2.4 cv=Xvz3+FF9 c=1 sm=1 tr=0 ts=691b2d22 cx=c_pps a=ULNsgckmlI/WJG3HAyAuOQ==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=VffenE3n-DyGx4saXfUA:9 a=QEXdDO2ut3YA:10 a=1WsBpfsz9X-RYQiigVTh:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTE3MDEyMSBTYWx0ZWRfX3JgUH/um1tOc 0fi3CCr9VTCiVZisB6zG4L11zttXyO1OU/R5mgCkx2acfWLFNDLQkBXB0g5fvYX3cKCMb/ih57B kRHTPOryMuWYL7kRQ0jjcss6XhSCPt8epHoEllRhIJh7QISaw34ypNaebvph5NLZ4UHvQrwtkyc LzRXEbZtKqqTtDayo/31hXH/7ElwT0sVOAU4/IDjph/55cq/pJ7AMwHgA01n8Wds0Efx0j2cuk2 CIaSGz5iBj9GW95YbuRswks3tZZH5hD74T9H7Uibl6RJqJw/vQrLmZytXZl1x7KxOdo2wgeB7MO JXWQJhqhe6W47hBUTGJTeeFddbLHhEq8bhsEfRV7kypgaSMqT9MqujIUhSwveUE7lApef4nP6EF QkMdm5aLumYqWjww2vBZeQ5f9FChug== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-17_03,2025-11-13_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 phishscore=0 priorityscore=1501 clxscore=1015 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511170121 On 11/14/25 12:29 AM, Akhil P Oommen wrote: > Current logic assumes that the voltage corners in both MxG and MxA are > always same. This is not true for recent targets. So, rework the rpmh init > sequence to probe and calculate the votes with the respective rails, ie, > GX rails should use MxG as secondary rail and Cx rail should use MxA as > the secondary rail. > > Fixes: d6225e0cd096 ("drm/msm/adreno: Add support for X185 GPU") > Signed-off-by: Akhil P Oommen > --- Reviewed-by: Konrad Dybcio Konrad