From patchwork Tue Sep 22 14:16:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 11792651 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F0DD8112E for ; Tue, 22 Sep 2020 14:17:54 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B96FF2395C for ; Tue, 22 Sep 2020 14:17:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="VdRsvamK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B96FF2395C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=FdwZPU4HjNlCc+LrcmmW2Y5HEvqRArlj/6bZFrVbXls=; b=VdRsvamKcQXyLOLTeGUqvtbrZ wR93Lpa+HTKt1Z8vo8JthjZeRTm7HqWAOSKi4DikWSOyr3e/t1MuoXckPyTI4vbNRR9EW9EFErfvH swhEwozDA8XJ8BilmhQcb8EtKxa09dvn1V4hEcX92vbLKL5mSPgL3ezNiXm7R5YeoYAiRBHEy7b8N qEIpHziYcWi/1AAvNUNHCEWaTCHHzl4Qn7/qls8eGVhs7hm/gaxu5Rhdc6IBpAvSnjf2Bl7ZrKQGy An7Wuux4OSAa9kJjlnxg3heoZ2pmXQFRFwvJMUYRcki0ru4XMWdglHGBYrKMDWlGIioSG3HmXKhvU 44bG6gffw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKj6h-0004OD-9i; Tue, 22 Sep 2020 14:17:23 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKj6O-0004JD-Hz; Tue, 22 Sep 2020 14:17:08 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 34DBB1396; Tue, 22 Sep 2020 07:17:03 -0700 (PDT) Received: from e121345-lin.cambridge.arm.com (e121345-lin.cambridge.arm.com [10.1.196.37]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 99A313F718; Tue, 22 Sep 2020 07:17:01 -0700 (PDT) From: Robin Murphy To: will@kernel.org, robh@kernel.org, tomeu.vizoso@collabora.com, steven.price@arm.com, alyssa.rosenzweig@collabora.com, khilman@baylibre.com, narmstrong@baylibre.com, jbrunet@baylibre.com Subject: [PATCH v2 3/3] arm64: dts: meson: Describe G12b GPU as coherent Date: Tue, 22 Sep 2020 15:16:50 +0100 Message-Id: <765446e529e50b304af63432da7836c4d31eb8d4.1600780574.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.28.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200922_101707_154557_08352B82 X-CRM114-Status: GOOD ( 11.41 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, iommu@lists.linux-foundation.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org According to a downstream commit I found in the Khadas vendor kernel, the GPU on G12b is wired up for ACE-lite, so (now that Panfrost knows how to handle this properly) we should describe it as such. Otherwise the mismatch leads to all manner of fun with mismatched attributes and inadvertently snooping stale data from caches, which would account for at least some of the brokenness observed on this platform. Reviewed-by: Neil Armstrong Tested-by: Neil Armstrong Signed-off-by: Robin Murphy --- arch/arm64/boot/dts/amlogic/meson-g12b.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi index 9b8548e5f6e5..ee8fcae9f9f0 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi @@ -135,3 +135,7 @@ map1 { }; }; }; + +&mali { + dma-coherent; +};