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=-8.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 92AF2C432C3 for ; Mon, 18 Nov 2019 08:14:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6A23720727 for ; Mon, 18 Nov 2019 08:14:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=brennan.io header.i=stephen@brennan.io header.b="gGcgYyBn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726460AbfKRIOB (ORCPT ); Mon, 18 Nov 2019 03:14:01 -0500 Received: from sender4-of-o58.zoho.com ([136.143.188.58]:21838 "EHLO sender4-of-o58.zoho.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726420AbfKRIOA (ORCPT ); Mon, 18 Nov 2019 03:14:00 -0500 X-Greylist: delayed 904 seconds by postgrey-1.27 at vger.kernel.org; Mon, 18 Nov 2019 03:14:00 EST ARC-Seal: i=1; a=rsa-sha256; t=1574063907; cv=none; d=zohomail.com; s=zohoarc; b=n6ZjxkhAaCYdVbmonyMT0gX8EtdaPseXqA8EVlamRr14hEIO4ZIPQuN3Th/p0tFNLHSlK0iQPaeUNip2/ohWm6MW33vHSoZ8IApAVOQIUs/MnLyAmyCGwuy+TxYLLPjaae5BLQKRdxtJDCJH2s7X/k8ykW64Ep8D6sw3BosQ7Vo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1574063907; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:MIME-Version:Message-ID:Subject:To; bh=QaA7BDbSdX9jfQDBkM/kSQl2g+5tNndLUXgFesI8JtU=; b=jmPe8liHwyhc+lisp/S0bh1t+B/fnJYcuQwzN8exNKgyt763W7UA2QDkcB0YIXqYdZP724iOHuTAWbTEgokonhFpAR8+R3CJ3hbz++aoUvpH+k/CEUtL90JKiK/zQeSqkPFDIR1eT0g2D+pDGxtrrOLKMVv6uafy8nWU5fnaKXM= 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=1574063907; 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=864; bh=QaA7BDbSdX9jfQDBkM/kSQl2g+5tNndLUXgFesI8JtU=; b=gGcgYyBnfcHlRSvkWvOyaMKlDuqnVHD02oQQ6lKwfw9HdpqJzHZ64areSk9yJro2 nRfGp4wk4iw8ICXEKmystIxgKJ/3oXMM4LdHyCDYkiJc4VeNVGxcZTnm6KBK6RT5grj kNawSeC6tTY81TexVMAwtRyTvFukohJOqFzW4xmU= Received: from localhost (195.173.24.136.in-addr.arpa [136.24.173.195]) by mx.zohomail.com with SMTPS id 1574063905483664.0921926369589; Sun, 17 Nov 2019 23:58:25 -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: <20191118075807.165126-1-stephen@brennan.io> Subject: [PATCH 0/3] Raspberry Pi 4 HWRNG Support Date: Sun, 17 Nov 2019 23:58:04 -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 patch, the same command gives two random bytes. [1]: https://github.com/lategoodbye/rpi-zero/tree/bcm2711-hwrng --- Stefan Wahren (3): dt-bindings: rng: add BCM2711 RNG compatible hwrng: iproc-rng200: Add support for BCM2711 ARM: dts: bcm2711: Enable HWRNG support Documentation/devicetree/bindings/rng/brcm,iproc-rng200.txt | 1 + arch/arm/boot/dts/bcm2711.dtsi | 5 ++--- drivers/char/hw_random/Kconfig | 2 +- drivers/char/hw_random/iproc-rng200.c | 1 + 4 files changed, 5 insertions(+), 4 deletions(-) --=20 2.24.0