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Wed, 12 Aug 2026 00:36:44 -0700 (PDT) X-Received: by 2002:a17:90b:3948:b0:383:f52b:d616 with SMTP id 98e67ed59e1d1-393014fa36emr3194989a91.10.1786520204012; Wed, 12 Aug 2026 00:36:44 -0700 (PDT) Received: from [10.217.219.92] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-392f9675e32sm829428a91.0.2026.08.12.00.36.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 Aug 2026 00:36:43 -0700 (PDT) Message-ID: <2c036793-23b3-48d4-834f-9daf8000b2d5@oss.qualcomm.com> Date: Wed, 12 Aug 2026 13:06:36 +0530 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/7] soc: qcom: geni-se: Populate clk_perf_tbl with SE source clock frequencies from perf OPP table To: Praveen Talari , konrad.dybcio@oss.qualcomm.com, Sudeep Holla , Cristian Marussi , Ulf Hansson , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , Mark Brown , Viken Dadhaniya , Andi Shyti Cc: chandana.chiluveru@oss.qualcomm.com, arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, linux-spi@vger.kernel.org, linux-i2c@vger.kernel.org References: <20260805-derive_clk_perf_tbl_from_perf_domain_opp_table-v1-0-61171ab1cdce@oss.qualcomm.com> <20260805-derive_clk_perf_tbl_from_perf_domain_opp_table-v1-2-61171ab1cdce@oss.qualcomm.com> Content-Language: en-US From: Mukesh Savaliya In-Reply-To: <20260805-derive_clk_perf_tbl_from_perf_domain_opp_table-v1-2-61171ab1cdce@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=a8EAM0SF c=1 sm=1 tr=0 ts=6a7c228d cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=ddSnBWzqd8mu_d83chYA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-ORIG-GUID: K6fq_UQFj6gZXx3LqA7F_qs8uQbt-Zw9 X-Proofpoint-GUID: K6fq_UQFj6gZXx3LqA7F_qs8uQbt-Zw9 X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDA2MCBTYWx0ZWRfX+4SLRvyGT1Ol 4pRVcmRbZkBhOk31mRO5AAs+G4P7e61VL0iMdEzHRcOmye/KUV6hzgmHJOqcm0ZtG6+MxH+fFLT 1w0l13FCXokz3dA4B9TX1YnUbfiH+uo= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDA2MCBTYWx0ZWRfX6wF7/yPj9/Qg 9IxT5lFUdHYawFjddbWd/8Ry0a2V7Yudro/OgxHXJxV3kfOtXRcgMoZeBH9KGIRa6mI8QTbWXrh kOBENhXmlDEj/nMgAeUrY8AqiVhHDPucwEjGcXAEv49cDsmJyBQ6NH2i92lwCvYM5ESnmGtx3dE m6tk9+eOE8hH8xpOGwoM8aC2NhUasMI9aDV8An8zZwT0pE0WLpbCnlzOrsUBpPbbDxno/YjG/TE h3MUKsvrulmg+MasO9kiPUkMk9uLdqNtecviffr+xGDOVZAZWRDC7OzhyeNxs4IUw5RMSFvpxyq Uf88CaQkhXrRT+JMW3cz0vdtRtltgkt+vuECP36KfvoaCaKPQVH8bEDkUyY7PkS7Lo6e+n7AG9U 78nIGWL43hJap+8cgqWXLFqVZmFucqOr+9ukEh344y1Thi4lO1yNlr21dNsG7kGDnbhmT/IWD/u LT4JAawhrNe4/BaNJ+A== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-12_02,2026-08-10_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 impostorscore=0 adultscore=0 spamscore=0 malwarescore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608120060 On 8/5/2026 1:27 AM, Praveen Talari wrote: > Currently, on the SA8255P platform, protocol drivers attached via > geni_se_domain_attach() treat each OPP on the perf domain as directly > corresponding to a protocol value such as a baudrate or requested > frequency, and simply request that OPP via > geni_se_set_perf_level()/geni_se_set_perf_opp(). This does not allow > computing a source clock and divider combination for a protocol > requested frequency, unlike the Linux clock managed path which derives > this from se->clk_perf_tbl via geni_se_clk_freq_match(), and then > applies the matched source clock frequency with dev_pm_opp_set_rate(). > > Change this by treating the OPP table exposed on the perf domain > device as representing the actual SE HW supported source clock > frequencies, the same role clk_perf_tbl plays for the Linux clock > managed path. Populate se->clk_perf_tbl and se->num_clk_levels by > iterating over this OPP table in geni_se_domain_attach(), so that > protocol drivers on the firmware managed (SA8255P) path can also use > geni_se_clk_freq_match() to pick the closest supported source clock > frequency and calculate the required divider, and apply it with > dev_pm_opp_set_rate() the same way as it is done for the Linux clock > managed path, instead of relying on a direct frequency/baudrate-to- > perf-level mapping. > > Signed-off-by: Praveen Talari > --- Acked-by: Mukesh Savaliya