From patchwork Tue Jul 14 12:39:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Horia Geanta X-Patchwork-Id: 11662783 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 13C5413B6 for ; Tue, 14 Jul 2020 12:41:11 +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 E1A92208FE for ; Tue, 14 Jul 2020 12:41:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="cHQU0h5n" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1A92208FE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=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: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:In-Reply-To:References:List-Owner; bh=m50JtYm+TCNB/+QO3aIFCeiYhEAKunZJKEdsizLz8mY=; b=cHQU0h5n5Z9zPyykbLFHSSfHik gM0OJahRFW64jUoegJjKTGMgxoZwcjO/Bnc2OO7Uoj20MyilNSaOe9su7ibPK133XoDxx9dlYegab WmWoNgmDDvqJipzOYMn66u1IvDnhJvw+iSu8W2OWGQ4aEIgGWQi24xm6DQh8j4W/tXt7eO97+owlo SHuQWWMFzzAswyOaK4PPc714lwG5S9uEdLVjPUxMHrSmajUOkhCSTNwrHEntbT+43wwaUrwuJ/UAx 1iZah5VT1Y8jiPko/yndwlSqiBjzm7lHUu6qUT7ostjU05t/S7HJ1uYcwl91OGmSs5aNMBs2iCRgR JLmORz6g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jvKDj-0002wD-5Q; Tue, 14 Jul 2020 12:39:39 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jvKDf-0002mM-LD for linux-arm-kernel@lists.infradead.org; Tue, 14 Jul 2020 12:39:36 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 2492C201000; Tue, 14 Jul 2020 14:39:34 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 17CCF201004; Tue, 14 Jul 2020 14:39:34 +0200 (CEST) Received: from fsr-ub1864-014.ea.freescale.net (fsr-ub1864-014.ea.freescale.net [10.171.95.219]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 5A165205A4; Tue, 14 Jul 2020 14:39:33 +0200 (CEST) From: =?utf-8?q?Horia_Geant=C4=83?= To: Rob Herring , Shawn Guo , Sascha Hauer , Matt Mackall , Herbert Xu Subject: [PATCH v3 0/5] hwrng: add support for i.MX6 rngb Date: Tue, 14 Jul 2020 15:39:15 +0300 Message-Id: <20200714123920.23711-1-horia.geanta@nxp.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200714_083935_804195_F92A753C X-CRM114-Status: UNSURE ( 9.22 ) X-CRM114-Notice: Please train this message. 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 [92.121.34.21 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-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Arnd Bergmann , Iuliana Prodan , Greg Kroah-Hartman , Marco Felsch , linux-kernel@vger.kernel.org, Franck Lenormand , NXP Linux Team , Pengutronix Kernel Team , Martin Kaiser , Silvano Di Ninno , Fabio Estevam , linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add support for RNGB found in some i.MX6 SoCs (6SL, 6SLL, 6ULL, 6ULZ), based on RNGC driver (drivers/char/hw_random/imx-rngc.c). This driver claims support also for RNGB (besides RNGC), and is currently used only by i.MX25. Note: Several NXP SoC from QorIQ family (P1010, P1023, P4080, P3041, P5020) also have a RNGB, however it's part of the CAAM (Cryptograhic Accelerator and Assurance Module) crypto accelerator. In this case, RNGB is managed in the caam driver (drivers/crypto/caam/), since it's tightly related to the caam "job ring" interface, not to mention CAAM internally relying on RNGB as source of randomness. On the other hand, the i.MX6 SoCs with RNGB have a DCP (Data Co-Processor) crypto accelerator and this block and RNGB are independent. Changelog: v3 -mention in the DT binding the compatibility with "fsl,imx25-rngb" -collected Reviewed-by v2 -update rngb DT binding with compatible strings for i.MX6 SoCs Horia Geantă (5): dt-bindings: rng: add RNGB compatibles for i.MX6 SoCs ARM: dts: imx6sl: fix rng node ARM: dts: imx6sll: add rng ARM: dts: imx6ull: add rng hwrng: imx-rngc: enable driver for i.MX6 Documentation/devicetree/bindings/rng/imx-rng.txt | 3 +++ arch/arm/boot/dts/imx6sl.dtsi | 2 ++ arch/arm/boot/dts/imx6sll.dtsi | 7 +++++++ arch/arm/boot/dts/imx6ull.dtsi | 7 +++++++ drivers/char/hw_random/Kconfig | 2 +- drivers/char/hw_random/imx-rngc.c | 3 +++ 6 files changed, 23 insertions(+), 1 deletion(-)