From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 792F5CAC5B1 for ; Tue, 23 Sep 2025 11:41:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZFDG+wvs2WG93zhT44NWUOfN2GowDDjPuUl1CMypSmk=; b=a9gNReJCFHBDN2x780WhauyUlk XYuQvjrGgCG2gyNqGrVEmYewQs9f+9QGF9jY8oBO8e2N9sA6sdJKJSYKB672KgTaF2G/lO/Er/xno o5juP/tCIRuXuBbdnI1yeFubPf554RvC7Gx4NLDtkNIecG3h20/Kz7GBNQpPrg6pFC2Gc69D8e43h llrmnqHzYLTxBgZi4EmjRP1rrorkZXfikSRxoadlzhsuTwa7VGtFaSCxRN4k2qrDPEFaFStTeXsL2 fhDFr5D2Zw2xmBtqCKdUeRlc9V9OHeiaZwRq5nDdFSu/czNoyWS73H5g5BHTEqTtjRHW+OoXQUzcV indKdd0Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v11OK-0000000DD9c-1bMl; Tue, 23 Sep 2025 11:41:04 +0000 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v11OI-0000000DD7s-0zuD; Tue, 23 Sep 2025 11:41:03 +0000 ARC-Seal: i=1; a=rsa-sha256; t=1758627648; cv=none; d=zohomail.com; s=zohoarc; b=KWnyYstbYsqu77K0d6sbxLmGRGRAIaUQsQqMFjBgzeyqmWN2geANGC23t15HjFjgupdKgkZzzb3b/EX5HPQlekzjQGYq7oEprZTpoNW70u2WalKmoa4u1DoNHrzPI67qItMM5zEzDv1s00NyuGvAIZqvPyZM9/L6gl/+2sareHo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1758627648; 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=ZFDG+wvs2WG93zhT44NWUOfN2GowDDjPuUl1CMypSmk=; b=Lw5xSCfPH3ZqD+AR9NKK1N13JOiGO4QYs5gjfBEF1O4JZUEiXai2QhAmYbObi3VT8z1w/k0aDAngJcbzbs2FZwoOk6HTv5Qd38cyKQNRNXglSBEjypDRb8S1s+LMoLtHrYASPqbp1HlrVVQKSUAiPkpKfvCQMIay0q68bnjuZs0= 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=1758627648; 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=ZFDG+wvs2WG93zhT44NWUOfN2GowDDjPuUl1CMypSmk=; b=AD6C5rBCb111C5q6cIOOqoSnnFCKHixwxfdqLbn/jSVTfCqY0Kw4/fMqIrCzW4pP ZHO9i+ofc3uI+YR+cOfnveSw6TL47Km5Qul1R+gMxX3UDCPB/hMbOU6LMXTC9+f7i4w YffG3l4P7cvp2uEw5PsXV+KlgXqdRLC3x2ca5aBI= Received: by mx.zohomail.com with SMTPS id 1758627645320914.7659430893929; Tue, 23 Sep 2025 04:40:45 -0700 (PDT) From: Nicolas Frattaroli Date: Tue, 23 Sep 2025 13:39:57 +0200 Subject: [PATCH v4 4/8] dt-bindings: mailbox: Add MT8196 GPUEB Mailbox MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250923-mt8196-gpufreq-v4-4-6cd63ade73d6@collabora.com> References: <20250923-mt8196-gpufreq-v4-0-6cd63ade73d6@collabora.com> In-Reply-To: <20250923-mt8196-gpufreq-v4-0-6cd63ade73d6@collabora.com> To: AngeloGioacchino Del Regno , Boris Brezillon , Jassi Brar , Chia-I Wu , Chen-Yu Tsai , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , Kees Cook , "Gustavo A. R. Silva" , Ulf Hansson Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-hardening@vger.kernel.org, linux-pm@vger.kernel.org, Nicolas Frattaroli X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250923_044102_341284_8388D38F X-CRM114-Status: GOOD ( 13.32 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The MediaTek MT8196 SoC includes an embedded MCU referred to as "GPUEB", acting as glue logic to control power and frequency of the Mali GPU. This MCU runs special-purpose firmware for this use, and the main application processor communicates with it through a mailbox. Add a binding that describes this mailbox. Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Nicolas Frattaroli --- .../mailbox/mediatek,mt8196-gpueb-mbox.yaml | 64 ++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/Documentation/devicetree/bindings/mailbox/mediatek,mt8196-gpueb-mbox.yaml b/Documentation/devicetree/bindings/mailbox/mediatek,mt8196-gpueb-mbox.yaml new file mode 100644 index 0000000000000000000000000000000000000000..ab5b780cb83a708a3897ca1a440131d97b56c3a6 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/mediatek,mt8196-gpueb-mbox.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/mediatek,mt8196-gpueb-mbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek MFlexGraphics GPUEB Mailbox Controller + +maintainers: + - Nicolas Frattaroli + +properties: + compatible: + enum: + - mediatek,mt8196-gpueb-mbox + + reg: + items: + - description: mailbox data registers + - description: mailbox control registers + + reg-names: + items: + - const: data + - const: ctl + + clocks: + items: + - description: main clock of the GPUEB MCU + + interrupts: + items: + - description: fires when a new message is received + + "#mbox-cells": + const: 1 + description: + The number of the mailbox channel. + +required: + - compatible + - reg + - reg-names + - clocks + - interrupts + - "#mbox-cells" + +additionalProperties: false + +examples: + - | + #include + #include + #include + + mailbox@4b09fd80 { + compatible = "mediatek,mt8196-gpueb-mbox"; + reg = <0x4b09fd80 0x280>, + <0x4b170000 0x7c>; + reg-names = "data", "ctl"; + clocks = <&topckgen CLK_TOP_MFG_EB>; + interrupts = ; + #mbox-cells = <1>; + }; -- 2.51.0