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Tue, 22 Oct 2024 07:25:28 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49M7PRLh026995 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 22 Oct 2024 07:25:27 GMT Received: from [10.131.33.37] (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 22 Oct 2024 00:25:22 -0700 Message-ID: <0b297305-0141-208a-e414-fb7dc98317b9@quicinc.com> Date: Tue, 22 Oct 2024 12:55:19 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH V4 1/5] dt-bindings: firmware: Document bindings for QCOM SCMI Generic Extension Content-Language: en-US To: Krzysztof Kozlowski , Dmitry Baryshkov CC: , , , , , , , , , , , , , References: <20241007061023.1978380-1-quic_sibis@quicinc.com> <20241007061023.1978380-2-quic_sibis@quicinc.com> <3765cf3d-8477-45a7-af0e-b0c78f41eaad@kernel.org> From: Sibi Sankar In-Reply-To: <3765cf3d-8477-45a7-af0e-b0c78f41eaad@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: cl2EvZWMF51Qa-unApiv5whUawjYAyQY X-Proofpoint-ORIG-GUID: cl2EvZWMF51Qa-unApiv5whUawjYAyQY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 spamscore=0 mlxlogscore=995 phishscore=0 adultscore=0 mlxscore=0 clxscore=1011 bulkscore=0 malwarescore=0 impostorscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410220047 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241022_002535_348697_66C640DA X-CRM114-Status: GOOD ( 14.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 10/8/24 17:41, Krzysztof Kozlowski wrote: > On 08/10/2024 14:10, Dmitry Baryshkov wrote: >> On Tue, Oct 08, 2024 at 08:49:27AM GMT, Krzysztof Kozlowski wrote: >>> On Mon, Oct 07, 2024 at 11:40:19AM +0530, Sibi Sankar wrote: >>>> +/* >>>> + * QCOM_MEM_TYPE_DDR_QOS supports the following states. >>>> + * >>>> + * %QCOM_DDR_LEVEL_AUTO: DDR operates with LPM enabled >>>> + * %QCOM_DDR_LEVEL_PERF: DDR operates with LPM disabled >>>> + */ >>>> +#define QCOM_DDR_LEVEL_AUTO 0x0 >>>> +#define QCOM_DDR_LEVEL_PERF 0x1 >>> >>> I could not find any driver using these. Can you point me to usage in >>> the drivers? >> >> It's well hidden. These are the raw values used for DDR_QOS memory. > > So not a binding? Then these should be dropped. I am not sure why the term "well hidden" was even considered :( The driver just reads them from dt and passes them along. If you want the dt to list magic numbers 0/1 instead I can do that as well. -Sibi > > Best regards, > Krzysztof >