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=-5.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 9E8D4C07E95 for ; Tue, 20 Jul 2021 22:05:48 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6701061009 for ; Tue, 20 Jul 2021 22:05:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6701061009 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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:References:In-Reply-To: Date:Cc:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LI3+ThWfa8w1rk4B/YcVnW2TQ/VGym0h+lGYDALEw1M=; b=oyOmk6XHn6AH7Y vcgshr57J7k1wdP7brF6HBvHhKgWaY8nHahXD+EVREJg75ohZH+HO78PtPYd1j7amquDmGxtGU2v/ luNla7usiSPAz4fJZlHxQq45MGP1xS0hg6uCcVzQGJUy2njxmSx7w20CvSdyxXM5NpnQegKvXyJ7x gQZqJXtkZvKQhBx8UgyE2UUt+alx0ksU1L82Nis0pLL4I2xwNvPFeU2GkNyl89NXhnDNbZSQYvskj i0puXI123PSsOqoD378/6MVuHQL2Y+RbcWBLl1btoSSt8UxkTePvfq7Fw/rxTFXAi8iVyfjirStpq xvR7uYbb5AuNghavmweQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5xqS-00E2dS-B6; Tue, 20 Jul 2021 22:04:08 +0000 Received: from gate.crashing.org ([63.228.1.57]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5xqO-00E2d4-FC for linux-arm-kernel@lists.infradead.org; Tue, 20 Jul 2021 22:04:06 +0000 Received: from ip6-localhost (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 16KM2gSN032638; Tue, 20 Jul 2021 17:02:43 -0500 Message-ID: Subject: Re: [PATCH v2] hwrng: Add Arm SMCCC TRNG based driver From: Benjamin Herrenschmidt To: Andre Przywara , Ard Biesheuvel Cc: Matt Mackall , Herbert Xu , Linux Crypto Mailing List , Linux ARM , Linux Kernel Mailing List , Mark Brown , Will Deacon , Ali Saidi , Jon Nettleton Date: Wed, 21 Jul 2021 08:02:42 +1000 In-Reply-To: <20210720171631.071f84f5@slackpad.fritz.box> References: <20210720152158.31804-1-andre.przywara@arm.com> <20210720171631.071f84f5@slackpad.fritz.box> User-Agent: Evolution 3.36.5-0ubuntu1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210720_150404_779858_C662D8D0 X-CRM114-Status: UNSURE ( 9.79 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 2021-07-20 at 17:16 +0100, Andre Przywara wrote: > Yes, a similar idea was already brought up before. I think there is even > the potential for something like an artificial SMCCC "bus", where those > services presentable as devices could be auto-detected (by checking > known function IDs), the respective drivers would then probe > automatically? Sounds like a boot time killer... can we instead describe them in DT and/or ACPI ? Cheers, Ben. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel