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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-spi@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-Proofpoint-ORIG-GUID: BGLCb9hRNohEae1EH1UpzFlxuIlEiJfD X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDA2MCBTYWx0ZWRfX7LkmBrUXTa20 nOKH/+Cq5Vl+g9K6lVduutDPmin1Xez74Jk66NYt7tQg3lPonWby/LEt2HNFhccJWmY1R7VydE6 04KhB+sxy5/N6q0GNa81rx0HTwoOTjgILUwAoPC+YWP9UuetaUk1eURrpSRMwKiehryR8DdYTon doo5guwnM6fnF6hovwN4jsHFwoK1ulhL0fz/jcvYICo7sLGI6MCQKODwL7rmeCuiAuxkkJ5o4zz hzZVzKElE9KS8pYSY6arC/FzPZr3KCHzyllK2lD3+vXnMZ0stD+/b5Vs0MH8vo9fogWP+qAas8u di5GZGmcCtwTXX37wV59Y4abiymizRSEFkwV4q0zue++FQasNH1wL1N0O5WNDo+MXS6FGbGVo4e OS1e7OZKTnH1dvrqTTwJuviUnOFr8VU1zS+T3vbqqdYctr6F2oSNBf7cjZR7TuZDvgBt2Vm4uae YYrhuJGRO7HbRyfJKCw== X-Authority-Analysis: v=2.4 cv=K6ES2SWI c=1 sm=1 tr=0 ts=6a7c228d cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=ddSnBWzqd8mu_d83chYA:9 a=QEXdDO2ut3YA:10 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-GUID: BGLCb9hRNohEae1EH1UpzFlxuIlEiJfD X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDA2MCBTYWx0ZWRfX/WpG9+npRSwO o3Rjl8QS3ZiegVVgtUz6K4hgjDIYlBJTJaiRD5/pJag5CtWNHIMtuLGTpvD6G4mQDMsjv4sx4xz Ft+IUi4P84EaRTsSRxcqeGKiOHQfq2g= 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 suspectscore=0 spamscore=0 adultscore=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 priorityscore=1501 phishscore=0 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