From nobody Tue Sep 29 04:42:43 2026 Received: from mail-wr1-f50.google.com (mail-wr1-f50.google.com [209.85.221.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CAD92D6E64 for ; Wed, 12 Aug 2026 12:51:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786539085; cv=none; b=Mh0X5ilQMmTFyy1BccXj2FH4NJzmHb/jOIFuL0Mwcwjm5Nbyc+3Y0/EkoJ3JppOlgdBbMy+ivnBiR7rSHe13ZGTGV904zMKDuvW70VyLffbrDB7LVv4AIK+F2Z2kR3u2+NB76J4rNkmMKQkRucKBND0tPTwKciUMbQmhWZjXGTI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786539085; c=relaxed/simple; bh=qIan9dCGeQhqRM3rOnnokcZx5ifoPxT+GYhWvcFmnX8=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=mcB7YsmWZ4aQX/GpD7Y+7UblyZOta/hksHRYqwggZHX2PNciCJm6ysprjVOszM7pDFKLmiXCjHf1rgcae+HeNj0BVrX+J4E4sGh46TAiqEZKBinnDvYhkW/ewwOl/Wi4UIipUnXjNn0EPYOV9E9Io5bjQo8vrobMMlzsPs87hb0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=k7XD1c5n; arc=none smtp.client-ip=209.85.221.50 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) header.d=gmail.com header.i=@gmail.com header.b="k7XD1c5n" Received: by mail-wr1-f50.google.com with SMTP id ffacd0b85a97d-47f7027ca11so579139f8f.3 for ; Wed, 12 Aug 2026 05:51:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1786539081; x=1787143881; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=QyErD956j362irOXXbfGxSu5UhAM1P/KZEqH5BG6gQI=; b=k7XD1c5n7qQsiZ6hjWkFQKsPsQ/r05mcmdw7IfizOmOWT3a5nr7h/C18y2JWVyADrw GmkqQ+sviObxclGnjEO4Z9HnhRR4kRBifjycD+0nYksVnU4EXOedmMz/DCr4IbZLGoqa ASdjNSULd9NnUSxjFbG67OP8yjLofXhlF7oMsBhFHPK/MxSJFYmhgmCdwR/tXdan+jMP iRiN4DiTBg5nu74i+k1MvTgwDvkicx/UrXG3xhtUbSEOWKz2cuX3NpYTb4Fle8os7dPQ rU62kqxngNr9jzOLCPZmjq8D0Gz/xihXq+3v1/2qkdQ17kP1URMXXrTmeZ39iw4/qyPI mpxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786539081; x=1787143881; h=content-transfer-encoding:mime-version: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=QyErD956j362irOXXbfGxSu5UhAM1P/KZEqH5BG6gQI=; b=YjgufaCSgTkKvaC2VDZCG1bxNqtkhSIKTzdtPxKkclWShdh3/TiVdrtUc3677DGmoO 6H4iuIKyH9VRUHD3XXMRXbw6GgPFsIZvM3hLL/dFC/0nMg+6bsZ2qbWcHi7bFojHpcqt LVIByYVnhabtJ8R0bs81SjVhKs7WXm3s/aNdEA6NC92k+PZu9R+6j0yYmvXyC1LN0B56 CMk/vmqi1Qbr3CE1/+CNF2SRv1/0ftmyKzi0grR7fljjub6bpRdmTz1cOCdlLD92RTM1 hSXvsNykTwWDNEs2MSY6vjQ4coyvuZPzNzFT5XsDaTjEiawEfp51PYa8aG/5lLe+y2R5 XTow== X-Gm-Message-State: AOJu0Yzr4TMXhnYgkbPPE8sijESo/jY00YEN6IKq5i1UWp+c/VK+F/Jz afkEZxVlp3O5ZidI8DyudaEf1+Fu33VRlCzxlyUORz7N1coOnRDU82B/ X-Gm-Gg: AR+sD12kjKHXYw0z07mqL4Lxq88+qmvA4sxiojlvTimhVNA8Qyu1rscI5uD3n5xu+OZ QFJ20OXk8sK4BT9V3lOEwsTtEBG1G0Iipl6z1l8VA1qTrdsG79ooZexD8u2BqgYZTtvRS/oYNaH 6aeasvmFzBRM00+tM43EvN5qNcHzUcLk/ztAz+BgLV/kGditZ8jNCU3EuG/fRthf4Ot4R7GrpbK 5qfJSxWl089WVuiC3UxlvtkIfO+OP8ttknAsJeodIZ9JhsxqWCJlRGrix50fF6WAMsLtJsFi1fi 2Tz7qenaxaeWF6WoeSzFwPmryEVz3aA29c28JuYTGLj3dsa0N/chR6VEVB47AoYFyiqnZ8YpeMO 5IjUjTukZ3W1s1LOarf+LqWZIKT8kVSt6t0l8I4Di7BMZhgNgYsCrXp+iKm7DFLviCQ55dwuP0Q PyMK2Xy3W/DPv0lc3urNJir7OQLWaGdvqegQ2BCj6JD77gPCU+srsFCVdLTsPD35mEH7GpW5IUs jLOdMbkkYq4SJOorssc9J4XLG+KmJLb8VoR1rfODDh1Snk= X-Received: by 2002:a05:6000:25ed:b0:47f:9662:85fe with SMTP id ffacd0b85a97d-48152ca1131mr6679024f8f.16.1786539080848; Wed, 12 Aug 2026 05:51:20 -0700 (PDT) Received: from thinkpad ([2.176.247.120]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48150d4e400sm7729201f8f.21.2026.08.12.05.51.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2026 05:51:20 -0700 (PDT) From: Arash Golgol To: linux-kernel@vger.kernel.org Cc: lgirdwood@gmail.com, broonie@kernel.org, Arash Golgol Subject: [PATCH] regulator: fan53555: Add support for FAN53555BUC23X type Date: Wed, 12 Aug 2026 16:20:54 +0330 Message-Id: <20260812125054.19111-1-arash.golgol@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" FAN53555BUC23X has the ID 0 and REV 0xc, starts at 600mV and increments in 12.5mV steps. Per the datasheet, the FAN53555BUC23X (23 option) is grouped with the 00 and 13 options for soft-start timing (t_SS =3D 300us typ.), so the existing enable_time =3D 400 is reused here as well. This variant is found on the ASUS Tinker Edge R (RK3399Pro) as the supply regulator for both vdd_gpu and vdd_cpu_b. Verified across the full GPU OPP table with the userspace devfreq governor. Signed-off-by: Arash Golgol --- drivers/regulator/fan53555.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c index c282236959b1..59155cad99bc 100644 --- a/drivers/regulator/fan53555.c +++ b/drivers/regulator/fan53555.c @@ -113,6 +113,7 @@ enum { enum { FAN53555_CHIP_REV_00 =3D 0x3, FAN53555_CHIP_REV_13 =3D 0xf, + FAN53555_CHIP_REV_23 =3D 0xc, }; =20 enum { @@ -305,6 +306,11 @@ static int fan53555_voltages_setup_fairchild(struct fa= n53555_device_info *di) di->vsel_step =3D 10000; di->enable_time =3D 400; break; + case FAN53555_CHIP_REV_23: + di->vsel_min =3D 600000; + di->vsel_step =3D 12500; + di->enable_time =3D 400; + break; default: dev_err(di->dev, "Chip ID %d with rev %d not supported!\n", --=20 2.34.1