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Tue, 07 Jul 2026 00:57:07 -0700 (PDT) X-Received: by 2002:a05:622a:9c3:10b0:51b:f40b:2fa2 with SMTP id d75a77b69052e-51c4bd5a87bmr80135851cf.1.1783411027315; Tue, 07 Jul 2026 00:57:07 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c15ad82311fsm75880366b.8.2026.07.07.00.57.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Jul 2026 00:57:06 -0700 (PDT) Message-ID: Date: Tue, 7 Jul 2026 09:57:03 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/8] arm64: dts: qcom: Add GPU support for Kaanapali To: Akhil P Oommen Cc: Sean Paul , linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Dmitry Baryshkov , Will Deacon , Robin Murphy , Joerg Roedel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter References: <20260705-kaana-gpu-dt-v2-0-6ac53de56314@oss.qualcomm.com> <20260705-kaana-gpu-dt-v2-5-6ac53de56314@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: e4cnSwPu6RedXON6XLvNMoKLEUiS6AvS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA3MDA3NSBTYWx0ZWRfX5eF46swlZahN xzaImZZb5w92ShlFTUfRphUT31Zm+H8RKJ0t64Kvw7EzFSx0Btylwl6Y0xu/Z8FeDi0Q1wVXJI6 iKSEns9inGxlXi6RdPzyx2S9x0RYQWkpzpEMoLkRjXhZu1wRBzbsl0L42TGNNp8IOhBr8LCHA7e uyYptxFpSWV14LnqEiC3H2itJaUVk+vfdTnVOa0MWif9w9aA1T1wPWmdHJXdXSC+vxL4OFGcuJV VHWwgXZR6JtTEJDTa9clDEFDpvAihWBBsUHW1DlEHM2RoHchsSn+CDdr5JYuA/XRJcRNb2jWIzr uFEpA7laXq8AaxjILBrmpkCztzt2cA227KTs5JZfXMF/l2N8aVlQl2l1BseBGrMz2JOmzVpw+3n QyvBihPGn7WRCvyyeTXsmBU0aWDYiSKWpga9R6zAOPghYUmXi9ALT79RHbj8p8a9x1a/I4Y6xqw dy1dvormm5VChtA3Qxg== X-Authority-Analysis: v=2.4 cv=PIM/P/qC c=1 sm=1 tr=0 ts=6a4cb154 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8 a=w5vk1yBYWc5d-UbTd4AA:9 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA3MDA3NSBTYWx0ZWRfX1Z9G81z3R8yn W0uqh31iANB1VTgMn31HIo4uvlg3QCflMN/dpAEb3TQIXq/aYK6OU5NnK2siRiu+oPAi04wcKL3 ZuZvalCzYJg4gsPPcrgVl7A7yEDHnbU= X-Proofpoint-GUID: e4cnSwPu6RedXON6XLvNMoKLEUiS6AvS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-07_01,2026-07-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 impostorscore=0 malwarescore=0 adultscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607070075 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260707_005709_555128_B5ABB5A0 X-CRM114-Status: GOOD ( 17.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 7/6/26 10:06 PM, Akhil P Oommen wrote: > On 7/6/2026 3:07 PM, Konrad Dybcio wrote: >> On 7/5/26 10:00 AM, Akhil P Oommen wrote: >>> Adreno 840 present in Kaanapali SoC is the second generation GPU in >>> A8x family. It is based on the new slice architecture with 3 slices, >>> higher GMEM/caches etc. >>> >>> There is some re-arrangement in the reglist to properly cover maximum >>> register region. Other than this, the DT description is mostly similar >>> to the existing chipsets except the OPP tables. >>> >>> Reviewed-by: Dmitry Baryshkov >>> Signed-off-by: Akhil P Oommen >>> --- >> >> [...] >> >>> + qcom,gmu = <&gmu>; >>> + #cooling-cells = <2>; >>> + >>> + nvmem-cells = <&gpu_speed_bin>; >>> + nvmem-cell-names = "speed_bin"; >> >> This looks good to me, but I thought that on a8x, we're supposed to use >> the freq limiting register in CX_MISC - is either of them preferred? >> Or are they just hardwired to the same thing by chance > > I believe the other register would work, but I don't have a fused hw to > test. OTOH, this is what is commercialized. This is the answer then Konrad