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 X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78DC3C432C0 for ; Tue, 19 Nov 2019 06:14:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 49A2820692 for ; Tue, 19 Nov 2019 06:14:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=brennan.io header.i=stephen@brennan.io header.b="cwmy2wB5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727109AbfKSGOp (ORCPT ); Tue, 19 Nov 2019 01:14:45 -0500 Received: from sender4-of-o58.zoho.com ([136.143.188.58]:21825 "EHLO sender4-of-o58.zoho.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727014AbfKSGOp (ORCPT ); Tue, 19 Nov 2019 01:14:45 -0500 ARC-Seal: i=1; a=rsa-sha256; t=1574144058; cv=none; d=zohomail.com; s=zohoarc; b=FDZb191bVzzsmEhPHuSDRaaVt7KFIt6KQmswEHW57HA+Cvb8V+jTzRidED3Tjz7Xm96HWmBJ7KUDXQFl/wjoCpoaPSqhcNZQRr+QI1U97jojCKx5XpR+c1FKu2C/BpuLbqkIk0+59jlaUXPiT8tqqwLVOT0XK8sQTd8miJsEwcc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1574144058; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:MIME-Version:Message-ID:Subject:To; bh=c7L5ybwI41MQuUShcRtA57Ge+Ip1hk0Hb3ub23HMqaQ=; b=EVXnrACu/oK4Kz7ddwHdXs5N6VnpFcWRdQG9wf0BHjbCuxoDJM7S4BjU6QO8iYXtX681eQb1ErHkAvTEanYfEATZCIxq1Wkgi6i04HB+ajTd5RHK+VyHNi62Sfs6BEwZqyDs6yUQcFAUFTfV0iDJqtna60s3e/2DS9IpQH8AMpo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=brennan.io; spf=pass smtp.mailfrom=stephen@brennan.io; dmarc=pass header.from= header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1574144058; s=selector01; d=brennan.io; i=stephen@brennan.io; h=From:To:Cc:Message-ID:Subject:Date:MIME-Version:Content-Transfer-Encoding:Content-Type; l=1186; bh=c7L5ybwI41MQuUShcRtA57Ge+Ip1hk0Hb3ub23HMqaQ=; b=cwmy2wB55tgQXK/vQOWlD0swe4jSvp7d9+e6rK8Bvpfqq1lWyISr2Q+caX1K0uKJ iN4iRAVa+khnM2t8o0YWkT58iS9CLOjGLSYm89a2+NqqcvA+if0BGcX+3P3U22kjJqV gaYUl4LZ9JiVjTQYu9Gxf29gt7KjG/K0mdCxuxT0= Received: from localhost (195.173.24.136.in-addr.arpa [136.24.173.195]) by mx.zohomail.com with SMTPS id 1574144058311185.86846931854632; Mon, 18 Nov 2019 22:14:18 -0800 (PST) From: Stephen Brennan To: stephen@brennan.io Cc: Matt Mackall , Herbert Xu , Rob Herring , Mark Rutland , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Eric Anholt , Stefan Wahren , Arnd Bergmann , Greg Kroah-Hartman , Florian Fainelli , linux-crypto@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rpi-kernel@lists.infradead.org Message-ID: <20191119061407.69911-1-stephen@brennan.io> Subject: [PATCH v2 0/3] Raspberry Pi 4 HWRNG Support Date: Mon, 18 Nov 2019 22:14:04 -0800 X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Content-Type: text/plain; charset=utf8 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch series enables support for the HWRNG included on the Raspberry Pi 4. It is simply a rebase of Stefan's branch [1]. I went ahead and tested this out on a Pi 4. Prior to this patch series, attempting to use the hwrng gives: $ head -c 2 /dev/hwrng head: /dev/hwrng: Input/output error After this series, the same command gives two random bytes. Changes in v2: - specify the correct size for the region in the dts, refactor bcm283x rng --- Stefan Wahren (2): dt-bindings: rng: add BCM2711 RNG compatible hwrng: iproc-rng200: Add support for BCM2711 Stephen Brennan (1): ARM: dts: bcm2711: Enable HWRNG support .../devicetree/bindings/rng/brcm,iproc-rng200.txt | 1 + arch/arm/boot/dts/bcm2711.dtsi | 6 +++--- arch/arm/boot/dts/bcm2835.dtsi | 1 + arch/arm/boot/dts/bcm2836.dtsi | 1 + arch/arm/boot/dts/bcm2837.dtsi | 1 + arch/arm/boot/dts/bcm283x-common.dtsi | 11 +++++++++++ arch/arm/boot/dts/bcm283x.dtsi | 6 ------ drivers/char/hw_random/Kconfig | 2 +- drivers/char/hw_random/iproc-rng200.c | 1 + 9 files changed, 20 insertions(+), 10 deletions(-) create mode 100644 arch/arm/boot/dts/bcm283x-common.dtsi --=20 2.24.0