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Wed, 26 Aug 2026 08:17:47 -0700 (PDT) X-Received: by 2002:a17:90b:4c09:b0:37f:e177:f58 with SMTP id 98e67ed59e1d1-3966d3dcdb1mr15425980a91.9.1787757467399; Wed, 26 Aug 2026 08:17:47 -0700 (PDT) Received: from [192.168.0.6] ([49.204.111.175]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39646138f87sm8381159a91.3.2026.08.26.08.17.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Aug 2026 08:17:47 -0700 (PDT) Message-ID: <75e6979b-84ed-49ee-83f8-bdceef2cb464@oss.qualcomm.com> Date: Wed, 26 Aug 2026 20:47:38 +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: Konrad Dybcio , Sudeep Holla , Cristian Marussi , Ulf Hansson , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , Mark Brown , Viken Dadhaniya , Andi Shyti Cc: mukesh.savaliya@oss.qualcomm.com, 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: Praveen Talari In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: ctZVNUUoIv-5y4FGsBoWPfeUs9pWeTwM X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI2MDEyNyBTYWx0ZWRfX/l8liR5KgJnG a56bTGj8ces8waeXNTbw/9d2mC9Qv+P0JOvE1A8E0wgOjeaRjJgX7zFzykpWDGRDfPLX3+8PBT5 V8DMLJLbnOKhHlkwPyrQeaLhGSjH9c+XCq+pd1DxlD4dtyXFc/IqlzG/FeudXIbTQO6+H2CjUV7 gHOfmN2p0Msw6dj2TLv+lgvvQ1K63pYFNxWWd6oWWZIjYDm6n3It6ezzDJMq22IpHUDcgDXc4Kc h2jmv+SaHXL2FGbWwe5+6eqI/oUBoSc58zz1FthINzoTYWvtqeCW7Xo4GTudOV/2jpczUlnXMYL BrCPRdH8qV8DHsSQGX4vRI2YFUSuW7ha8MFdRihDf1Z+v1mtUkV6db70kH6e0gors1U2UT12Z9G sOGQ/iqH6enVuUGS5BrKYmUp4fm3FdpWpMby/0k1AHcDHhg86kxFqxXEFrOAXSyHdI7I5AGwKV9 PwhfQETuG/5eFfz4NqQ== X-Authority-Analysis: v=2.4 cv=Y77IdBeN c=1 sm=1 tr=0 ts=6a8f039c cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=MMW3c9rFXQuugNOjlkEUow==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=rko7XVifj6BEHbDbj-IA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-ORIG-GUID: ctZVNUUoIv-5y4FGsBoWPfeUs9pWeTwM X-Proofpoint-Spam-Info: AW1haW4tMjYwODI2MDEyNyBTYWx0ZWRfX01qvKijRbizC u4N1JXM0dYPSiGUB59A/K63fUsOlEBXY47iSg9BXQs0I2Q+f0BOxbeXrueUVF/5P/o3MVrM3c/j pjM07o4QNeWL5pjLlHSR+ifGTYBLY3k= 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=2026-08-26_04,2026-08-26_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 phishscore=0 spamscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608260127 HI Konrad, On 24-08-2026 20:26, Konrad Dybcio wrote: > On 8/4/26 9:57 PM, 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 > [...] > >> @@ -1175,6 +1181,29 @@ int geni_se_domain_attach(struct geni_se *se) >> else if (ret < 0) >> return ret; >> >> + perf_dev = se->pd_list->pd_devs[DOMAIN_IDX_PERF]; >> + >> + num_opps = dev_pm_opp_get_opp_count(perf_dev); >> + if (num_opps <= 0) >> + return num_opps < 0 ? num_opps : -ENODEV; > if (num_opps < 0) > return num_opps; > if (num_opps == 0) > return -ENODEV; > >> + >> + se->clk_perf_tbl = devm_kcalloc(se->dev, num_opps, >> + sizeof(*se->clk_perf_tbl), >> + GFP_KERNEL); >> + if (!se->clk_perf_tbl) >> + return -ENOMEM; >> + >> + for (i = 0, level = 0; i < num_opps; i++, level++) { > One iterator is sufficient here level is not acting as a loop iterator here. It represents the OPP performance level returned by dev_pm_opp_find_level_ceil(), which may advance to a value greater than level + 1 depending on the available OPP table entries. The array index, however, must advance sequentially for each populated entry. Therefore, separate variables are needed. Thanks, Praveen Talari > > Konrad