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 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0E2F9C433EF for ; Mon, 4 Apr 2022 13:01:27 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 4EFF281DE5; Mon, 4 Apr 2022 15:01:25 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1649077285; bh=LAoXcls+h//pI/6jHkLSY8GAXvsmnEA/ql1YLkrFVT0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=dByj2d48W2tD7sfUQN7WTnnzSoMRKBIBlrCiBKd2Wg5MZOkd0AOjEi9BRQPWgUB/A bfyB/CoEBX+0IY7k1+18yQcT38qoKq5iSDCr7G/JxrdiTSvKiAet6VxTOkql/xqydz SsTLtxi0aUEPVCLP2Tuiz1JPf8wc0djlMBHKrmVgMaiGCX2Yzn4uWknhCq9yHrhoTn x27TdJ27fkTT/p13MhHDjv5SWSJFoef4dRtga+BUU9bkqEoWS+AcwZarblUN9p2GGW dwps+8y9mx81XNpRuxIWV+6GRojI0g0EsE9gxEXQhHgPNQFjVyWD2phCv24fNCzGgN tRep4i+hHKGxw== Received: from [127.0.0.1] (p578adb1c.dip0.t-ipconnect.de [87.138.219.28]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 1BB4E81119; Mon, 4 Apr 2022 15:01:18 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1649077283; bh=LAoXcls+h//pI/6jHkLSY8GAXvsmnEA/ql1YLkrFVT0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=hZHgRQ30LMJkUtuQ/C8kVmDUh/8w+yuLYY1UizAAPNakUvQ8TtXs7lgy1V7vWpm7C IvgZDCF109mmlboflg2uRsmsKbZVGUiBJvMT7ed4lE0HSlierbE3HDKax/ysOlY1Wx AdnC3Eax8FgX9374OBrM66EbIxvyv33Ndi8IANCfInWRkxFFiMcVAD448LnuM7UDZp pdmBGaefWQocFpOlgMuOU94kWtZao6rlVO9/NuhWkB/rJMBv1x9CkpEoj0AUaM6Psj WdrR8UfvTJXNzoBjCw952fYGkWcXE6oYtZi1jxyxyD4MslhfyKScMrR1Az/a4lpkbz IQRBNYxvOLteg== Message-ID: <97c99e4f-6e14-3a50-e66d-6f45445527d6@denx.de> Date: Mon, 4 Apr 2022 15:01:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [PATCH 3/3] imx: power-domain: Get rid of SMCCC dependency Content-Language: en-US To: Adam Ford Cc: U-Boot Mailing List , Fabio Estevam , Peng Fan , Stefano Babic References: <20220331030349.482922-1-marex@denx.de> <20220331030349.482922-3-marex@denx.de> From: Marek Vasut In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean On 4/4/22 14:51, Adam Ford wrote: > On Wed, Mar 30, 2022 at 10:04 PM Marek Vasut wrote: >> >> This driver is the only SMCCC dependency in iMX8M U-Boot port. Rework >> the driver based on Linux GPCv2 driver to directly control the GPCv2 >> block instead of using SMCCC calls. This way, U-Boot can operate the >> i.MX8M power domains without depending on anything else. >> >> This is losely based on Linux GPCv2 driver. The GPU, VPU, MIPI power >> domains are not supported to save space, since they are not useful in >> the bootloader. The only domains kept are ones for HSIO, PCIe, USB. > > I thought there were people who were using video in U-Boot, but maybe > I am wrong. There are no video drivers for MX8M in U-Boot, it's all USB and maybe sometimes in the future PCIe.