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Fri, 22 May 2026 02:29:26 -0700 (PDT) X-Received: by 2002:a17:903:41cf:b0:2be:39bd:8dd8 with SMTP id d9443c01a7336-2beb063f20emr31884605ad.33.1779442166061; Fri, 22 May 2026 02:29:26 -0700 (PDT) Received: from [10.218.5.114] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2beb591f63dsm15693955ad.83.2026.05.22.02.29.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 May 2026 02:29:25 -0700 (PDT) Message-ID: Date: Fri, 22 May 2026 14:59:15 +0530 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 v3 1/2] dt-bindings: cpufreq: qcom-hw: Document Shikra CPUFREQ Hardware To: Krzysztof Kozlowski Cc: "Rafael J. Wysocki" , Viresh Kumar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Manivannan Sadhasivam , Ajit Pandey , Taniya Das , Jagadeesh Kona , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20260521-shikra-cpufreq-scaling-v3-0-883c13d1e514@oss.qualcomm.com> <20260521-shikra-cpufreq-scaling-v3-1-883c13d1e514@oss.qualcomm.com> <20260522-juicy-seal-of-wind-a2fc50@quoll> Content-Language: en-US From: Imran Shaik In-Reply-To: <20260522-juicy-seal-of-wind-a2fc50@quoll> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: YtwLtcUWora26jOqdy0Xzk2Y5LL7A_w2 X-Authority-Analysis: v=2.4 cv=Zekt8MVA c=1 sm=1 tr=0 ts=6a1021f7 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=gEfo2CItAAAA:8 a=EUspDBNiAAAA:8 a=lsxlwQEPlIojZXG5zssA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 a=sptkURWiP4Gy88Gu7hUp:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIyMDA5MyBTYWx0ZWRfXydCdXsthoa1O 2EHwJcWM/jBecllJVJwXNuemkqVM7qGNmDGSd1FKXAGIapEpgtYZtuHovvrSFpDZEz6YtEE3O6X LcN/7SILQrCxF89hLWm1K3tDOf9r6dMFodsOtO6b0Mjha2xRjXJx74qNivy7RQkOC6YNFjb8Ann zkLY6x0ZkscIhE6UQNTlSUgJa2cn+qWWotyRJe26w4wBBJKVHtmVmPvwvfbxZ/EOiS6/MxBhssT J1FVe7XexBxTwufPztOFJ3oteBoGME0oTVajZKm1X9I8w6saScK3jDsFK2YST2fWr8Eqni1dPJC ZP6XXO4GOkgfpGNAjPU3lyXeW4Ng1KGS/eufLXO7fYJWvhLfJzXPk4dUxQqH57UEoN2KyVHbTWv Fq4R8QFpzr6Y35ykDEWRYh66wi+SR034Lv9Ehx8zjDlJtyXYU51uH/eNd5VSBObqTkN6nOc+wjD ktIUCpYmiEujb5cCURQ== X-Proofpoint-GUID: YtwLtcUWora26jOqdy0Xzk2Y5LL7A_w2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-22_02,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 spamscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605220093 On 22-05-2026 12:04 pm, Krzysztof Kozlowski wrote: > On Thu, May 21, 2026 at 07:36:04PM +0530, Imran Shaik wrote: >> The Qualcomm Shikra cpufreq hardware is functionally identical to EPSS, >> but supports only up to 12 frequency lookup table (LUT) entries. Introduce >> Shikra specific bindings to represent this constrained EPSS variant. >> >> Signed-off-by: Imran Shaik >> --- >> .../bindings/cpufreq/qcom,shikra-epss.yaml | 96 ++++++++++++++++++++++ >> 1 file changed, 96 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/cpufreq/qcom,shikra-epss.yaml b/Documentation/devicetree/bindings/cpufreq/qcom,shikra-epss.yaml >> new file mode 100644 >> index 0000000000000000000000000000000000000000..8543fd00d82acdbb3422bde462417118aa4c49d1 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/cpufreq/qcom,shikra-epss.yaml >> @@ -0,0 +1,96 @@ >> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/cpufreq/qcom,shikra-epss.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: CPUFREQ HW for Qualcomm Shikra SoC > > Qualcomm Shikra SoC EPSS > >> + >> +maintainers: >> + - Imran Shaik >> + - Taniya Das >> + >> +description: | >> + CPUFREQ HW is a hardware engine used by some Qualcomm SoCs to manage > > EPSS is a .... > >> + frequency in hardware. It is capable of controlling frequency for >> + multiple clusters. >> + >> + The Qualcomm Shikra CPUFREQ HW supports up to 12 frequency lookup table > > here as well, like I mentioned last time. cpufreq is linuxism and I > asked you about name of actual device. > Sure, will drop CPUFREQ and use EPSS as you mentioned, and post next series. Thanks, Imran > With above: > > Reviewed-by: Krzysztof Kozlowski > > Best regards, > Krzysztof >