From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=Vyee=AT=vger.kernel.org=devicetree-owner@kernel.org>
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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 C6ED6C433E1
	for <linux-devicetree@archiver.kernel.org>; Wed,  8 Jul 2020 20:34:35 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id B237320775
	for <linux-devicetree@archiver.kernel.org>; Wed,  8 Jul 2020 20:34:35 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1725972AbgGHUef (ORCPT
        <rfc822;linux-devicetree@archiver.kernel.org>);
        Wed, 8 Jul 2020 16:34:35 -0400
Received: from foss.arm.com ([217.140.110.172]:36310 "EHLO foss.arm.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1725848AbgGHUef (ORCPT <rfc822;devicetree@vger.kernel.org>);
        Wed, 8 Jul 2020 16:34:35 -0400
Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])
        by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9640A1FB;
        Wed,  8 Jul 2020 13:34:34 -0700 (PDT)
Received: from bogus (unknown [10.37.8.63])
        by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 737313F66E;
        Wed,  8 Jul 2020 13:34:31 -0700 (PDT)
Date:   Wed, 8 Jul 2020 21:34:28 +0100
From:   Sudeep Holla <sudeep.holla@arm.com>
To:     Daniele Alessandrelli <daniele.alessandrelli@linux.intel.com>
Cc:     linux-arm-kernel@lists.infradead.org,
        Rob Herring <robh+dt@kernel.org>,
        Jassi Brar <jassisinghbrar@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
        Paul Murphy <paul.j.murphy@intel.com>,
        Daniele Alessandrelli <daniele.alessandrelli@intel.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Dinh Nguyen <dinguyen@kernel.org>,
        Sudeep Holla <sudeep.holla@arm.com>,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH 2/7] mailbox: keembay-scmi-mailbox: Add support for Keem
 Bay mailbox
Message-ID: <20200708203428.GB31671@bogus>
References: <20200616155613.121242-1-daniele.alessandrelli@linux.intel.com>
 <20200616155613.121242-3-daniele.alessandrelli@linux.intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200616155613.121242-3-daniele.alessandrelli@linux.intel.com>
User-Agent: Mutt/1.9.4 (2018-02-28)
Sender: devicetree-owner@vger.kernel.org
Precedence: bulk
List-ID: <devicetree.vger.kernel.org>
X-Mailing-List: devicetree@vger.kernel.org

On Tue, Jun 16, 2020 at 04:56:08PM +0100, Daniele Alessandrelli wrote:
> From: Paul Murphy <paul.j.murphy@intel.com>
> 
> Keem Bay SoC has a ARM trusted firmware-based secure monitor which acts
> as the SCP for the purposes of power management over SCMI.
> 
> This driver implements the transport layer for SCMI to function.
>

Please use the smc transport support in driver/firmware/arm_scmi/smc.c
for this. You don't need mailbox support for SMC/HVC. Basically you
don't need this driver at all and you have everything you need to support
what you want.

Let me know if you face issues.

-- 
Regards,
Sudeep