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(2001-14bb-15b-d5bd-79ce-863-9a22-aae2.rev.dnainternet.fi. [2001:14bb:15b:d5bd:79ce:863:9a22:aae2]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-59e08b8905esm3302294e87.38.2026.02.02.02.03.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Feb 2026 02:03:28 -0800 (PST) Message-ID: <655fcbac-b39f-4207-a1ac-d97bfde3d209@oss.qualcomm.com> Date: Mon, 2 Feb 2026 11:03:24 +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 v2 5/8] media: venus: scale MMCX power domain on SM8250 To: Konrad Dybcio , Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Taniya Das , Jonathan Marek , Ulf Hansson , "Rafael J. Wysocki" , Bryan O'Donoghue , Vikash Garodia , Dikshita Agarwal , Mauro Carvalho Chehab , Stanimir Varbanov , Abhinav Kumar , Hans Verkuil , Stefan Schmidt , Konrad Dybcio , Bryan O'Donoghue , Dikshita Agarwal Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-media@vger.kernel.org, Mauro Carvalho Chehab References: <20260201-iris-venus-fix-sm8250-v2-0-6f40d2605c89@oss.qualcomm.com> <20260201-iris-venus-fix-sm8250-v2-5-6f40d2605c89@oss.qualcomm.com> <231ae9c2-bb3b-430c-990c-deab6a8a0d0b@oss.qualcomm.com> Content-Language: en-US From: Dmitry Baryshkov In-Reply-To: <231ae9c2-bb3b-430c-990c-deab6a8a0d0b@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=NNfYOk6g c=1 sm=1 tr=0 ts=69807672 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=HXGjUklKsU4Eq_QyynMA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-GUID: RSnoDCrhc6tzxsEz836LUb93icYGEeoq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjAyMDA4NSBTYWx0ZWRfXy0G932PSpcNX AU6tSFrULccbT4q7uwIELaNII7zHjiA4Fq9dtusfSPdie27iiR6DPyMcMm5SZm7yGREX4sl+fG8 sUpJ2L88Ja8q6xZZXwxWGu6qmf4w8aCgrtk1H5pvhrw+64OjDC60KYgM8xnGxzQTfs6yMajkvDh l6AmMYJqmpt1/zgFsLo6ro098jmX3l8hiftiaSDFnBReaxO0TtaxWoWqNKv7YK9V+UPHckVfB9c ela3Ss29T8h4G3iJQtWFrXKiitFZdaSf1a49Yq+D0xN4XmlGG1b7pFsPULja+B7/LHF/E4g6i67 ehIlBI1qkchQT2HMBC/8ym27EdoeRPezdnW9Use1WPeX16C3TIJZG9e6pLCr3Cbeh8/TCurcneX knil9qVgt1mkHmodvCcds3bzMet+VO7V4V5QJAygPYj3hj01PmfXIFKTAG+4/00x2k48mV93qVl UP+Td9xKxr+w0+DpeyQ== X-Proofpoint-ORIG-GUID: RSnoDCrhc6tzxsEz836LUb93icYGEeoq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-02_03,2026-01-30_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 clxscore=1015 suspectscore=0 spamscore=0 phishscore=0 bulkscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602020085 On 02/02/2026 12:02, Konrad Dybcio wrote: > On 2/1/26 11:49 AM, Dmitry Baryshkov wrote: >> On SM8250 most of the video clocks are powered by the MMCX domain, while >> the PLL it powered on by the MX domain. Extend the driver to support >> scaling both power domains, while keeping compatibitility with the >> existing DTs, which define only the MX domain. >> >> Fixes: 0aeabfa29a9c ("media: venus: core: add sm8250 DT compatible and resource data") >> Signed-off-by: Dmitry Baryshkov >> --- > > [...] > >> @@ -904,6 +904,12 @@ static int vcodec_domains_get(struct venus_core *core) >> >> /* Attach the power domain for setting performance state */ >> ret = devm_pm_domain_attach_list(dev, &opp_pd_data, &core->opp_pmdomain); >> + /* backwards compatibility for incomplete ABI SM8250 */ > > "eeeh", I'd rather error out since it can't guarantee to have its > power fully on That would break backwards compatibility, so... it's not possible. > > Konrad > >> + if (ret == -ENODEV && >> + of_device_is_compatible(dev->of_node, "qcom,sm8250-venus")) { >> + opp_pd_data.num_pd_names--; >> + ret = devm_pm_domain_attach_list(dev, &opp_pd_data, &core->opp_pmdomain); >> + } >> if (ret < 0) >> return ret; >> >> -- With best wishes Dmitry