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Mon, 06 Jul 2026 02:38:00 -0700 (PDT) X-Received: by 2002:a05:622a:13cd:b0:51c:f3e:781e with SMTP id d75a77b69052e-51c4be97d68mr86772871cf.6.1783330680497; Mon, 06 Jul 2026 02:38:00 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c12b60575c4sm709337566b.9.2026.07.06.02.37.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Jul 2026 02:37:59 -0700 (PDT) Message-ID: Date: Mon, 6 Jul 2026 11:37:56 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 , 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 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 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: <20260705-kaana-gpu-dt-v2-5-6ac53de56314@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=TcamcxQh c=1 sm=1 tr=0 ts=6a4b7779 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=EUspDBNiAAAA:8 a=z65YV3W3F_EkYOo9s_QA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-ORIG-GUID: JQeB8pp5qmQ5_nzghMYHWx-_OiGmafvV X-Proofpoint-GUID: JQeB8pp5qmQ5_nzghMYHWx-_OiGmafvV X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA2MDA5NyBTYWx0ZWRfX1/YqEdeXzJTV i4/NDhbYc2p/y5Pmcb0Rk2XxMHddXIak4X8oVCYvhYGxmYYamyNW0lUs1dvZKXQ+/aaB4nxvpHS kxRGiXEagHukRw1sObZCL8sG9UrmtNrA02g8CyFFDBijq9H3CDOcV8n95do85KG1/RwGkysyZfT SXODjgeJEy+Kn2zk+bsFfX35Ojm+yC90XKvOKXmhlrsymHSi0PAVbCPGjm8e+UnF0HZ5481UGoD rBr+66UHGwRsL+kw/CsBrT/sOfUM24xrIW6fLcdpbFteoOsYm/OZoeCfHUExyWOLIn5WdStHyvE sBdp7rCC3/vv8AdFfKeI6GR+Oy9vI2HSdRKDrrh22me4lzQPRFiOhxPbKxsKs1LB/aJeFsJlEo4 sAUxMHNCFivf3CvY6+vl6i/oArrb5K7Wjv/sD4hzhHJ8zTlH75hxKMsTS1HTjRpaZm8TsTBGcEy N9VeU1isFurRE8zicog== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA2MDA5NyBTYWx0ZWRfX4S6RnNhT/38u FCf0BHnm1UWxIke1B7PmUIx7gJUOGMNDHD9lemK/IxOiAFmLbr50GMqTEAN5BCGkDd75PFwLLHv WCBPHf8GrWk5oNCSY4RX14VzLgyPprU= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-07-06_01,2026-07-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 suspectscore=0 bulkscore=0 phishscore=0 impostorscore=0 adultscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607060097 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 Konrad