From patchwork Wed May 18 10:04:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 12853462 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 B0793C433F5 for ; Wed, 18 May 2022 10:06:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=4HyQSz0F7dSmd9dM4qrkBiDdIlT4oUqlqpuUwQSAMrM=; b=ffd54yDJcQhX1J kKif4Zvd5giUXCburFPUanQYpvpuoAJ4oDu4ersUIfvQxfPoCbobp2jkC1c/ES1lg8yn7PrJhhj+t 0nIExsbDkIpGxjva9obiMaFjofGaAFVfzDvVxMdbnJh0ftYOpE9diH4o0IZm5emMigW9RY/DURZXl 9d3ZNjGPAbtRmM0VXR6thqvLfAVrQSt2Jmcr7BU3TH4FztgOWWj363DGg7/MAmZQ3opI3WZayndb4 JmE5YPkcxDm1udsjkk0Mjw8imHz1HEeK6LC8YRxXIZhBII9LxhejI71IqOsT93ssOKnJDYzRHwdVe adiRz/0jeljtPD/sR1GA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrGYz-001EyE-Ra; Wed, 18 May 2022 10:05:53 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrGYN-001Eex-EY; Wed, 18 May 2022 10:05:17 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: kholk11) with ESMTPSA id 8EE241F44E07 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1652868311; bh=U70cvP2/Lgt8lNyOqWL39jq+Fark+U7neoHz5F2M2Nw=; h=From:To:Cc:Subject:Date:From; b=IsAoTuF0LZAK/38ZusnqIkI10GGd2aWgxdN2rhyFkvOY3sbmzggDeRnYWAI6SbDSu ARC0oZ7uzAKHX27vDoS7ruoS1PWqv19s3xjNgagzfltsoJoxEwnlt9krLrIyuiHFtA W1CTf+5vhhtcu5bLxzlld4STZIHFdhy4fyYNrI6EDrOKNkmJwa1uFM9LvBqyqPBccP XnRtWgFvqjV1XeLyqQmiPp3KzW3TvugS98vL9sYxT8ECATIakSJ28M1nmHK/W+Bhh4 y+fiK2jGk5YvAyqJN/bapRl105yVdat8KERFg8G1mNKQbiRToc6Qqn5wyKjN55r32X 4HvGjdXoTvj5Q== From: AngeloGioacchino Del Regno To: yong.wu@mediatek.com Cc: joro@8bytes.org, will@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, matthias.bgg@gmail.com, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, krzysztof.kozlowski@linaro.org, AngeloGioacchino Del Regno Subject: [PATCH v2 0/7] mtk_iommu: Specify phandles to infracfg and pericfg Date: Wed, 18 May 2022 12:04:56 +0200 Message-Id: <20220518100503.37279-1-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220518_030515_654472_336E16D3 X-CRM114-Status: UNSURE ( 9.49 ) X-CRM114-Notice: Please train this message. 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 The IOMMU has registers in the infracfg and/or pericfg iospaces: as for the currently supported SoCs, MT2712 and MT8173 need a phandle to infracfg, while MT8195 needs one to pericfg. Before this change, the driver was checking for a SoC-specific infra/peri compatible but, sooner or later, these lists are going to grow a lot... ...and this is why it was chosen to add phandles (as it was done with some other drivers already - look at mtk-pm-domains, mt8192-afe Please note that, while it was necessary to update the devicetrees for MT8173 and MT2712e, there was no update for MT8195 because there is no IOMMU node in there yet. Changes in v2: - Squashed dt-bindings patches as suggested by Matthias - Removed quotes from infra/peri phandle refs - Changed dev_warn to dev_info in patches [2/7], [3/7] AngeloGioacchino Del Regno (7): dt-bindings: iommu: mediatek: Add phandles for mediatek infra/pericfg iommu: mtk_iommu: Lookup phandle to retrieve syscon to infracfg iommu: mtk_iommu: Lookup phandle to retrieve syscon to pericfg arm64: dts: mediatek: mt8173: Add mediatek,infracfg phandle for IOMMU arm64: dts: mediatek: mt2712e: Add mediatek,infracfg phandle for IOMMU dt-bindings: iommu: mediatek: Require mediatek,infracfg for mt2712/8173 dt-bindings: iommu: mediatek: Require mediatek,pericfg for mt8195-infra .../bindings/iommu/mediatek,iommu.yaml | 30 +++++++++ arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 2 + arch/arm64/boot/dts/mediatek/mt8173.dtsi | 1 + drivers/iommu/mtk_iommu.c | 66 ++++++++++++------- 4 files changed, 75 insertions(+), 24 deletions(-)