From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.208.178 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792593638; b=gBPFduoSdX1LklwBFAV7u1KUekzyNS/XUf4cC+RWMdJ5orYu8YVM/POy4ZAwiAf0+7NK vMjqIQc39g8i49xv4meBV1L7U7pTk907S3IMIODKhBtTE1lk8p0gEc2Fd/SENKswYqyKJ ydy3t6aqc0jCJchy72pOzmuuiK9fns+I0YF3+8VVkZilnoq+r4hI6bWbbalxN346PbIQd PqvwWU+1WKbx5luQNqViku8u3F3zmNbh6T9MQr5l3QCMANHRZdYX19rZEQNpnJSvl8JH7 REIOP2ejgGRnA2R6SsWMZQRc9kNzIDGKgsVXSZUQ3nmPxXKqgY3FPxmjV05SiCDcfnA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792593638; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=JC3s2BvnjO6vQTjfoPdPvCQ10NTn2kZauw9NyfW3CCg=; b=UOvHqSCBojU9o+1f9wDyXgkM7qC+Gvztl1GC4o7/dTk+JjDwGKS0/SBrE/kcOzzhy3TV aQWqakZb9BnSjn3LM6uiod0g4udGG/Jzgf7CK/8zzkc+Ne7qg1p5+Uz3zQca04QC1EYBN QK17CIgQM1Rc65oTdyRc8dvemzwJgonwklN8fC0tTELtGggbcGzykUUDpYz/wPGPzJUfE VXaD5ssOOaHYQQwxOTfKyW82HsyTRPHkMpty4fElhTHVdWnJmJ/iIA8GLZBYIVbRCHSWD 2tSNanCD7i9glBr83plYcz/LElbEWA4s5ZYX4HwHqzNkS+t5nvO407EoGeu6iKqaooQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=Ob872DEf; arc=none smtp.remote-ip=209.85.208.178 Received: from mail-lj1-f178.google.com (mail-lj1-f178.google.com [209.85.208.178]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E3B9606A31F for ; Wed, 21 Oct 2026 14:40:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 4E3B9606A31F Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=Ob872DEf Received: by mail-lj1-f178.google.com with SMTP id 38308e7fff4ca-3ab3dd9670bso7533781fa.1 for ; Wed, 21 Oct 2026 07:40:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1792593636; x=1793198436; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=JC3s2BvnjO6vQTjfoPdPvCQ10NTn2kZauw9NyfW3CCg=; b=Ob872DEfECdrJK5rcadxSeTINa2R3SWYjAVksQcx6u8Y0WBhx6DD9Zg6jjBC9Nw8CI jTwxzV4diaMg1TmE31UYlW3jQzImoeLgRbu8BoKoShkPwswRHP9/a22GUcPq3OXY1Ajc VqwSmPTfE3WzPO+jDE38J3B7w5Ejh2qv9ekiAqomoCG8hEsLXD1vkyhLMdDT5sCe1ast j7ouDyrB4GOphshdOqtB6MKyhR1CoCWbiD2a6rchLomtwTeRqNpPeoAcxWZ7jS927InK 9ccycYhNXxgBB2pD5TWTFbqzHseH4abOHhPNhRYymBUa3d45TcN4cbVa3p7OKBZrnje0 NLqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792593636; x=1793198436; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=JC3s2BvnjO6vQTjfoPdPvCQ10NTn2kZauw9NyfW3CCg=; b=Qd0BmB9tPNyVUwfpv0BA1FdFrWRgK8fctsbruOQfD1Dee0n0H9Rn09kVIj+w4eLeFc BSGsGGw4ELqf+JM4SXJ205kU2jr7PRKbS4f6HVok+FpJLpOP8WRW5a/zyGQT9mMSu59F MYEot93rxt31R21Jk2HVAT4gOaI6zZuVgoFd9BTOREYS8JXQuvHLMBS+ZQzJg8oEup/g DycRijEmENy2aG2iaj8DfUh8yOo3VJDkBmDerSmaM0q8XBRQA4b8ExTGF4+lkUkXHXy6 2PaOquwrn6t0EdqYtuajNWI1NBRDXyT8qTwjr4bd7dNESDv1opVoy77KYKub3psgxIhT NL4g== X-Forwarded-Encrypted: i=1; AKwUvBzBe8EhOWTo9tfrDxdogdTLPRmaxZXxyTLRw2SHOfwuZyU1mOIgvAj3Mtc9RaaabVvq53tgAhtVwTXs@vger.kernel.org X-Gm-Message-State: AFq9FYJO+Y+t5wnu+VFcIBs9KTxPNra56qTWOdQCY08YMZDRP7rD3f9v r9rfTp7dw6oLyUTE1io1pshoBASv31LOPp1Ju5r/SRUfPmx6+hvhKEPAV0XsnhPo X-Gm-Gg: AYBFou01a7vqG5aZQsi+Ug2rjwBS8G7vrK5s2sVOEuOZ7ApQZiosPPp25tNFbLoMriy ywVjm2jTvGXDxSYHrTKGG0XgZ9uso3lCUX5J1vURGOUbw5h7q1ELVfbBX/eLrHAkdQip0rVgdZA N5wPEzpodh/9uDZ1ZuEO2CpHsDJE8r2VdiP6gTpK9+fmW+62/XhFW9N5c7dzNEnYmst3K8TygHZ Yz/qcploj84e0AqvYA4k5eWa79iUzA3xJfI9sfFcUyrwuoJxNvvJvWHRLOmQbaijXBspZXhjrDr CP3oZR7tf85eBUI2mRuNjvranPSNc6he4VmJ02EWqZJqUSaZhfy1SppRm1pkxuw+KRt0wAEiuMb aar9w9K1C0TndOd2tmvzmY13TWbQN4+Fd4+84+ruh8GXW4aQoVci1ebdHLqhHqXPSMNls9p7iDu rJbglWImsNyEif2velXHhSJB1pbFh5kuAo2D8Dg95JQdR2vBq3O2nt27WpLRbPk15o5AyNg5TaM C+cjRcw4R+xzGzv8kwJ8iLnp1yQfY48mr/QpvmL5wfAiUYIOvsX8+aue231a1Vmj7mIq0t9og== X-Received: by 2002:a05:651c:150a:b0:3a8:bd3d:549a with SMTP id 38308e7fff4ca-3ac44145e40mr6460711fa.7.1792593636213; Wed, 21 Oct 2026 07:40:36 -0700 (PDT) Received: from quietus.tail91f8a6.ts.net ([94.126.152.114]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3ac4f563bf7sm358271fa.18.2026.10.21.07.40.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2026 07:40:35 -0700 (PDT) From: Ruslan Koreev To: Lee Jones Cc: Rillian Grant , Sakari Ailus , Andy Shevchenko , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 4/4] leds: flash: lm3643: Describe the LED on the Lenovo ThinkPad X9-15 Gen 1 Date: Wed, 21 Oct 2026 17:40:34 +0300 Message-ID: <20261021144034.1636708-1-koreev.r@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <179198409516.839288.2293417415100693160@kernel.org> References: <20261011191026.149338-1-rillian.grant@gmail.com> <20261011191026.149338-5-rillian.grant@gmail.com> <179198409516.839288.2293417415100693160@kernel.org> X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Lee, We can share the board-description code in ipu-bridge and add flash-leds, as Sakari and Andy suggested, while keeping per-board current settings. Lenovo's packages set IRFlashLedIntensity=30 for the X1 [1] and 40 for the X9 [2]. With both outputs using the same current setting, these convert to nominal totals of 467350 uA and 608050 uA respectively. The X9 result matches Rillian's trace; the X1 result is from static analysis, with live Windows behavior still unverified. My earlier claim that Windows applies a fixed configuration to any LM3643 was too broad: the sensor configuration affects the current request. Both default paths configure a 400 ms controller timeout. Actual mode, pulse duration and continuous-torch limits remain unverified, so these are candidate operating settings rather than established LED limits. Rillian, could you share the relevant SPB trace, including mode, current and timeout writes, together with the installed driver version? [1] https://download.lenovo.com/pccbbs/mobiles/n4oce17w.html [2] https://download.lenovo.com/pccbbs/mobiles/n4cim20w.html Ruslan