From patchwork Wed Jul 6 19:08:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 12908526 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 C0B3CC43334 for ; Wed, 6 Jul 2022 19:09:42 +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=dW14kLSkDVZRakEhsvMfR+4IK0ho978KPTEWtrWmRiA=; b=hBN6D8zwRUJNFA RB+zwm8ikGb5XTiOEan91oWj6PcI46BVi9l+NU+5v+JucSr7Aj3YwKCCZJLm1wOcMMpFWXXEW1xpS ZIJn8DFF3daVfQdGhVULSBT9Y8Kot2vlNI6psRUnqTepCwwZCB/3RNbrOSedJuuXGkq/BaltUQKCV bC/ZJ7+RSHgXEPsBQS+f8m/vSLG1HE8S2MY4TFcgOSl3EeLwHgm5k0mAs8vciLc/GxqSbHIlbAyVv 9LZJcwiB2otDflsZzNTInwEWSK6J0HHETF9IE1O9p4UL1wOSzV3x5GgtYL9BoxK9EncoAmVzcid1Y iS2JOMpboGpVlb64Ii7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o9AOG-00C91V-G4; Wed, 06 Jul 2022 19:08:48 +0000 Received: from lelv0142.ext.ti.com ([198.47.23.249]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o9AOD-00C908-Go for linux-arm-kernel@lists.infradead.org; Wed, 06 Jul 2022 19:08:46 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 266J8d5N067193; Wed, 6 Jul 2022 14:08:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1657134519; bh=TsZFw/Y128sot7WWm1RTTs/Yzv1yc19MRgmVdodbX1k=; h=From:To:CC:Subject:Date; b=sDblqCYTClf0IVTQl9SGmbAIO5nsO6GUqyOvFP/x666Fe5QtFQ8dQIETaEOt4aFgY oK64vgqPG91sr2vPLAIyzGFuk1ZXjDXEsIFstIPsCMt90C9MXIr0UdnqWrqj67Rc6U X/1sQqVupkIVdVdJ4YFoPNS5lAn7JX4pN7gY6fQk= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 266J8dgw030772 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 6 Jul 2022 14:08:39 -0500 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Wed, 6 Jul 2022 14:08:39 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Wed, 6 Jul 2022 14:08:39 -0500 Received: from ula0226330.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 266J8c6v010468; Wed, 6 Jul 2022 14:08:38 -0500 From: Andrew Davis To: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , , , CC: Andrew Davis Subject: [PATCH v2 1/4] arm64: dts: ti: k3-am65-main: Disable RNG node Date: Wed, 6 Jul 2022 14:08:35 -0500 Message-ID: <20220706190838.26074-1-afd@ti.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220706_120845_723277_7487AF8D X-CRM114-Status: UNSURE ( 9.85 ) 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 hardware random number generator is used by OP-TEE and is access is denied to other users with SoC level bus firewalls. Any access to this device from Linux will result in firewall errors. Disable this node. Signed-off-by: Andrew Davis --- Changes from v1: - Added comment in dtsi file arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index e749343accedd..9de5a8294acd6 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -127,6 +127,7 @@ rng: rng@4e10000 { reg = <0x0 0x4e10000 0x0 0x7d>; interrupts = ; clocks = <&k3_clks 136 1>; + status = "disabled"; /* Used by OP-TEE */ }; };