From nobody Tue Feb 10 00:00:22 2026 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA93C337113; Fri, 14 Nov 2025 16:54:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763139281; cv=pass; b=FdQ9kON475BFkg+0qYKoCAavFKnm+VQoE+6OTk7tD1WA4rlzp28eP+SlKhj5ZzVIbmfeNyItB9oUT9tSx2SzmARnHW514TgGVuCTPwBna+N0aIsbT4n5tKIcv4C7CYiRxNwy+RGSMf194iruDTtxTDS1QFSQskyB+++nqjQmj1I= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763139281; c=relaxed/simple; bh=/tY2ZhLMz+Ucgr82z7NuwZatEAFZdu+cZ7omWVfkyXU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=faURzMtf1oDl8W4EcZzBdLcRp02Ce/V5O4sw/B840aKKVxUltQ9yICbMyDxvs3sUPAVSVDxu3TLy6tb8O8ZYS9XUnxQsusEHsohboQkRUEF2i/To6WwCBF4dcgBSmCYr1jTnCVJJ8OIyGqAdTVCjXNwADZJMHrCcq7Li6jRGYZM= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b=RQ6vNugE; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="RQ6vNugE" ARC-Seal: i=1; a=rsa-sha256; t=1763139268; cv=none; d=zohomail.com; s=zohoarc; b=DYPfGWTJNBjxboSjap2cs8MXufQH8Nu3yjo5vQgys5a4dR2Nrq35InIVuJe6qm5Naglvn4YByj15J6dgmXS0iCYv2HSdC9lYLzzw/O37gCu0IpOMT8bGdd00exTKL8AiH5DGA3BVZBN5zZyd/ftKY2aRdQzCfF9N+eQ7mg4MVRY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1763139268; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=2xhZzsPi24ECLdv/HgXQy4+BFguBDGlSdpqV9FxukS4=; b=iLP5cIflj/Fc8fCzI+JUGpkgkgSJpxRZuwc9US2R22Yh0fxAVnqXgWRIHcs1/CYfGSykiT5CXvqccIzU2cbTzI69wP/IzckfH4U99wvEVz3tUrlss9aKlnUJm/LCnqY/JkgcfftA9tsXxS6+2xPvKtOilYh9lQqQduURXy2mruU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1763139268; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:References:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=2xhZzsPi24ECLdv/HgXQy4+BFguBDGlSdpqV9FxukS4=; b=RQ6vNugEveXtZ50gIbNsQdp+9MFbCI81bHj43b2UXZ+a6JhjeWYdQzJZVM7YOK/R tx3J3g/GNwDbKJt2poMbaCAB4Co71V1gSIM+4IZfQ6smAbzPuZIkeJAKWIpm5NSBsSQ E0LIjHVb707fSlPH97wmD2BX1oesBDB/RogdXHDc= Received: by mx.zohomail.com with SMTPS id 1763139267314497.20972658135963; Fri, 14 Nov 2025 08:54:27 -0800 (PST) From: Nicolas Frattaroli Date: Fri, 14 Nov 2025 17:54:00 +0100 Subject: [PATCH 06/13] soc: mediatek: mtk-dvfsrc: Add a new callback for calc_dram_bw Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251114-mt8196-dvfsrc-v1-6-b956d4631468@collabora.com> References: <20251114-mt8196-dvfsrc-v1-0-b956d4631468@collabora.com> In-Reply-To: <20251114-mt8196-dvfsrc-v1-0-b956d4631468@collabora.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Henry Chen , Georgi Djakov Cc: kernel@collabora.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, Nicolas Frattaroli X-Mailer: b4 0.14.3 From: AngeloGioacchino Del Regno In preparation for adding support for DVFSRC Version 4, add a new callback for calculating the dram bandwidth, assign the current calculation algo to all of the currently supported SoCs, and use this in __dvfsrc_set_dram_bw_v1(). Signed-off-by: AngeloGioacchino Del Regno --- drivers/soc/mediatek/mtk-dvfsrc.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/soc/mediatek/mtk-dvfsrc.c b/drivers/soc/mediatek/mtk-d= vfsrc.c index a684e405daf7..3cbccbb7469a 100644 --- a/drivers/soc/mediatek/mtk-dvfsrc.c +++ b/drivers/soc/mediatek/mtk-dvfsrc.c @@ -73,6 +73,7 @@ struct mtk_dvfsrc { struct dvfsrc_soc_data { const int *regs; const struct dvfsrc_opp_desc *opps_desc; + u32 (*calc_dram_bw)(struct mtk_dvfsrc *dvfsrc, int type, u64 bw); u32 (*get_target_level)(struct mtk_dvfsrc *dvfsrc); u32 (*get_current_level)(struct mtk_dvfsrc *dvfsrc); u32 (*get_vcore_level)(struct mtk_dvfsrc *dvfsrc); @@ -274,10 +275,15 @@ static void dvfsrc_set_vscp_level_v2(struct mtk_dvfsr= c *dvfsrc, u32 level) dvfsrc_writel(dvfsrc, DVFSRC_VCORE, val); } =20 +static u32 dvfsrc_calc_dram_bw_v1(struct mtk_dvfsrc *dvfsrc, int type, u64= bw) +{ + return (u32)div_u64(bw, 100 * 1000); +} + static void __dvfsrc_set_dram_bw_v1(struct mtk_dvfsrc *dvfsrc, u32 reg, int type, u16 max_bw, u16 min_bw, u64 bw) { - u32 new_bw =3D (u32)div_u64(bw, 100 * 1000); + u32 new_bw =3D dvfsrc->dvd->calc_dram_bw(dvfsrc, type, bw); =20 /* If bw constraints (in mbps) are defined make sure to respect them */ if (max_bw) @@ -519,6 +525,7 @@ static const struct dvfsrc_opp_desc dvfsrc_opp_mt8183_d= esc[] =3D { static const struct dvfsrc_soc_data mt8183_data =3D { .opps_desc =3D dvfsrc_opp_mt8183_desc, .regs =3D dvfsrc_mt8183_regs, + .calc_dram_bw =3D dvfsrc_calc_dram_bw_v1, .get_target_level =3D dvfsrc_get_target_level_v1, .get_current_level =3D dvfsrc_get_current_level_v1, .get_vcore_level =3D dvfsrc_get_vcore_level_v1, @@ -549,6 +556,7 @@ static const struct dvfsrc_opp_desc dvfsrc_opp_mt8195_d= esc[] =3D { static const struct dvfsrc_soc_data mt8195_data =3D { .opps_desc =3D dvfsrc_opp_mt8195_desc, .regs =3D dvfsrc_mt8195_regs, + .calc_dram_bw =3D dvfsrc_calc_dram_bw_v1, .get_target_level =3D dvfsrc_get_target_level_v2, .get_current_level =3D dvfsrc_get_current_level_v2, .get_vcore_level =3D dvfsrc_get_vcore_level_v2, --=20 2.51.2