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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aac0e8961a6sm214801166b.57.2024.12.20.14.05.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 20 Dec 2024 14:05:05 -0800 (PST) Message-ID: <768ef22a-855b-472d-9432-49db7daaf2df@oss.qualcomm.com> Date: Fri, 20 Dec 2024 23:05:03 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v3 1/5] dt-bindings: net: wireless: Describe ath12k PCI module with WSI To: Jeff Johnson , Konrad Dybcio , Raj Kumar Bhagat , ath12k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, Kalle Valo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jeff Johnson , Bjorn Andersson , Konrad Dybcio , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20241105180444.770951-1-quic_rajkbhag@quicinc.com> <20241105180444.770951-2-quic_rajkbhag@quicinc.com> <9cbdca90-e76c-4ebb-a236-a0edbd94a629@oss.qualcomm.com> <62c599b5-20b2-4e1e-810d-e4502abbc682@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <62c599b5-20b2-4e1e-810d-e4502abbc682@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: ROAT3WyRpr6LEWoZfrJ_kur0hQjJj7_N X-Proofpoint-ORIG-GUID: ROAT3WyRpr6LEWoZfrJ_kur0hQjJj7_N 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 clxscore=1015 lowpriorityscore=0 mlxlogscore=999 mlxscore=0 phishscore=0 malwarescore=0 suspectscore=0 bulkscore=0 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412200178 On 20.12.2024 10:47 PM, Jeff Johnson wrote: > On 12/20/2024 12:03 PM, Konrad Dybcio wrote: >> On 5.11.2024 7:04 PM, Raj Kumar Bhagat wrote: >>> The QCN9274 WiFi device supports WSI (WLAN Serial Interface). WSI is used >>> to exchange specific control information across radios using a doorbell >>> mechanism. This WSI connection is essential for exchanging control >>> information among these devices. The WSI interface in the QCN9274 includes >>> TX and RX ports, which are used to connect multiple WSI-supported devices >>> together, forming a WSI group. >>> >>> Describe QCN9274 PCI wifi device with WSI interface. >>> >>> Signed-off-by: Raj Kumar Bhagat >>> --- >> >> I think this description is missing the key points: >> >> * what is that control information (power, data, radio stuff?) >> * what happens when the OS is unaware of all of this (i.e. what happens when >> we don't send any configuration) >> * is this configurable, or does this describe a physical wiring topology >> (what/who decides which of the group configurations detailed below take >> effect) >> >> And the ultimate question: >> * can the devices not just talk among themselves and negotiate that? >> >> Though AFAICU PCIe P2P communication is a shaky topic, so perhaps the answer >> to the last question is 'no' >> >> Konrad > > We already pushed the non-RFC version to our -next tree so we cannot update > the commit description without a forced push. > > https://lore.kernel.org/all/20241211153432.775335-2-kvalo@kernel.org/ > > However, Raj Kumar can submit an update to the description in the file, which > is probably the better place to have this information anyway. Sounds good Konrad