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Fri, 12 Dec 2025 23:44:34 +0100 From: Duje =?UTF-8?B?TWloYW5vdmnEhw==?= To: Brian Norris , Karel Balej Cc: Johannes Berg , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Francesco Dolcini , Ulf Hansson , Frank Li , linux-wireless@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, Jeff Chen , Peng Fan Subject: Re: [DONOTAPPLY RFC PATCH v2 4/4] arm64: dts: samsung,coreprimevelte: add wifi node Date: Fri, 12 Dec 2025 23:44:33 +0100 Message-ID: <5962754.DvuYhMxLoT@radijator> In-Reply-To: References: <20251026182602.26464-1-balejk@matfyz.cz> MIME-Version: 1.0 Autocrypt: addr=duje@dujemihanovic.xyz; keydata= mDMEZokhzhYJKwYBBAHaRw8BAQdAWJZ0hsI/ytTqHGFV8x6tzd5sB596cTeeDB4CQsTf+wC0KUR 1amUgTWloYW5vdmnEhyA8ZHVqZS5taWhhbm92aWNAc2tvbGUuaHI+iJkEMBYKAEEWIQRt/0HWDf MUtbdrpjCtMZNSRY+tAwUCaJ5XkSMdIEFkZHJlc3MgYm91bmNlcyBhcyBvZiB+MzEvMDgvMjAyN QAKCRCtMZNSRY+tA/N/AQDth3Xl3wNcETvWPqqfYfyw4BFqbOD05A/W0/G0ZIjFzgD+PZVts3sN p5WuEwIxUrWxwavWJQBJwhXeWdru5ol82gmImQQTFgoAQRYhBG3/QdYN8xS1t2umMK0xk1JFj60 DBQJmiSH/AhsDBQkJZgGABQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheAAAoJEK0xk1JFj60Dlw 8A/i4lPOL7NaYoYePDql8MaJaR9qoUi+D+HtD3t0Koi7ztAQCdizXbuqP3AVNxy5Gpb1ozgp9Xq h2MRcNmJCHA1YhWAbQoRHVqZSBNaWhhbm92acSHIDxkdWplQGR1amVtaWhhbm92aWMueHl6PoiZ BBMWCgBBFiEEbf9B1g3zFLW3a6YwrTGTUkWPrQMFAmaJIc4CGwMFCQlmAYAFCwkIBwICIgIGFQo JCAsCBBYCAwECHgcCF4AACgkQrTGTUkWPrQPUYAEAlVKitl0w6Wun+hC0JIf8bnc0TnrH8kcDxV f5lAF38fcA/j8RxR/p558NTFUyHZt2Sa5AqxVkaA4aJekySytWe1YGuDgEZokhzhIKKwYBBAGXV QEFAQEHQMRz0l4Dnk6Vl9YqC+ZGDDpr8SkFDyYOXqdBMGad3VccAwEIB4h+BBgWCgAmFiEEbf9B 1g3zFLW3a6YwrTGTUkWPrQMFAmaJIc4CGwwFCQlmAYAACgkQrTGTUkWPrQMbkwD+K6jiXYYMRnV l/5dpL//wXB1cM72ceR9tXYweMXg1lfABAOugzMF0xypW9zwYAEWVNOAaPsqtEPPYfBY3IXxl6m sB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251212_144455_289584_C0A368BC X-CRM114-Status: GOOD ( 14.65 ) 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 Friday, 12 December 2025 22:17:12 Central European Standard Time Karel=20 Balej wrote: > Duje Mihanovi=C4=87, 2025-12-12T15:55:48+01:00: > > On 12/12/25 09:36, Karel Balej wrote: > >> Not having any board schematics, I don't really know what exactly the > >> regulator's purpose is. As I mentioned in the commit message, the > >> communication with the chipset seems to work even if this is disabled > >> (e. g. FW loads, networks can be scanned for,...) which doesn't seem > >> like it should be the case if this was a main power supply for the bus, > >> only actual connecting to networks doesn't work (gives > >> CONNECT_ERR_ASSOC_ERR_TIMEOUT errors). > >=20 > > To me, this strongly suggests that the regulator powers the WiFi > > transmitter or at least a part of it (such as the RF amp). >=20 > Something like this occurred to me too but would the chip even see the > networks if this was the case? Although you are right that it could only > power some specific part of the radio. AFAIK you don't need the transmitter to capture and parse beacon frames. Of= =20 course, connecting to networks is a completely different story. Regards, =2D- Duje