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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22617C433F5 for ; Fri, 7 Jan 2022 12:05:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346651AbiAGMFI (ORCPT ); Fri, 7 Jan 2022 07:05:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237918AbiAGMFF (ORCPT ); Fri, 7 Jan 2022 07:05:05 -0500 Received: from ssl.serverraum.org (ssl.serverraum.org [IPv6:2a01:4f8:151:8464::1:2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C4D8C061212; Fri, 7 Jan 2022 04:05:05 -0800 (PST) Received: from ssl.serverraum.org (web.serverraum.org [172.16.0.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id F19302223B; Fri, 7 Jan 2022 13:05:01 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1641557103; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vYzcSUS8yvyk0FFz/CBJ9UzBPJSFoz+LxktBb7PpgvA=; b=Vnu+iGdr76U6X2zEQaPCWsKqZrw7uZ9QaTl85ShL3UTuO3+qJRNlat9FancNW0NiPftkJL g6Vg4Z1yJcwRZRGPpmigCnWaSu3U1nAO2QZM3d55p6BT2MFXJnEJiFGEcZY6i/nvDvO2Ox Awg3LEhCoEdyK4+D5ha7/RlvJer8QV4= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 07 Jan 2022 13:05:01 +0100 From: Michael Walle To: Lucas Stach Cc: Rouven Czerwinski , ZHIZHIKIN Andrey , linux-kernel@vger.kernel.org, peng.fan@nxp.com, ping.bai@nxp.com, alice.guo@nxp.com, agx@sigxcpu.org, krzk@kernel.org, leonard.crestez@nxp.com, festevam@gmail.com, marex@denx.de, herbert@gondor.apana.org.au, horia.geanta@nxp.com, daniel.baluta@nxp.com, frieder.schrempf@kontron.de, linux-imx@nxp.com, devicetree@vger.kernel.org, hongxing.zhu@nxp.com, s.hauer@pengutronix.de, pankaj.gupta@nxp.com, robh+dt@kernel.org, thunder.leizhen@huawei.com, martink@posteo.de, aford173@gmail.com, linux-arm-kernel@lists.infradead.org, gregkh@linuxfoundation.org, shengjiu.wang@nxp.com, qiangqing.zhang@nxp.com, op-tee@lists.trustedfirmware.org, linux-crypto@vger.kernel.org, kernel@pengutronix.de, shawnguo@kernel.org, davem@davemloft.net, jun.li@nxp.com Subject: Re: [PATCH v3 2/2] arm64: dts: imx8m: define proper status for caam jr In-Reply-To: <8fa36ec0a6252db4b0c7fbbf09de5e816d634206.camel@pengutronix.de> References: <20211111164601.13135-1-andrey.zhizhikin@leica-geosystems.com> <20211207230206.14637-1-andrey.zhizhikin@leica-geosystems.com> <20211207230206.14637-3-andrey.zhizhikin@leica-geosystems.com> <30312d09effae6b78309723a7261f85915b8d5b8.camel@pengutronix.de> <4ed84dc354eee36067ade567097ddd68@walle.cc> <8fa36ec0a6252db4b0c7fbbf09de5e816d634206.camel@pengutronix.de> User-Agent: Roundcube Webmail/1.4.12 Message-ID: <00e083278fb4a8c96fdef564a2183600@walle.cc> X-Sender: michael@walle.cc Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 2022-01-07 12:58, schrieb Lucas Stach: > Am Freitag, dem 07.01.2022 um 12:47 +0100 schrieb Michael Walle: >> Hi Rouven, >> >> Am 2022-01-07 10:46, schrieb Rouven Czerwinski: >> > .. since AFAIK i.MX8M* can not be run without TF-A. >> >> Are you sure? There probably aren't any boards out there >> without TF-A, but why shouldn't it work without it? > > PSCI, i.e. the only means to start the secondary CPUs, is implemented > in TF-A, so it's very unlikely that anyone would want to run a system > without TF-A. Also quite a bit of the lowlevel SoC initialization is > implemented in TF-A. Doesn't mean u-boot cannot implement PSCI; actually you doesn't need it at all, you can still use spin tables. I just keep hearing the same arguments for the LS1028A SoC and yet there is one board without TF-A ;) Anyway, I admit it's rather unlikely. -michael