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=-0.8 required=3.0 tests=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 1B1F9C433DF for ; Thu, 9 Jul 2020 12:25:26 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 D766C206DF for ; Thu, 9 Jul 2020 12:25:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="0O7pKlO1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D766C206DF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com 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=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Date: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=Et8I3bN1ozrRfa1gmOKWYjDYs+YSegS2KWzBRFgDB6M=; b=0O7pKlO1LmBktWChzRy+JlvxZ XHs6YVvNLGil/k7H0QR75iZlMIAx/Y8/uPpAi+fgnDZ0cXWqfru5y7TP+NQRX2Nf+gf2q6m//fW/8 Eu0wA4EmPuRiyLvd91zO3JhLJOfQvlXPtT9hOKApZKWGr84FruPTZHARFLSHppd1NGABdjET8ugsS aYffvcXwWSsfUKisfx1sQA10YDCMSuUIX6rA2UW5Z7VP3KGW5QQs60+BILei25KYaSX/GXvbabrdi YjsrXx6xLmIlqC//z5rQlWhn6/6F73GJkI/bl+i3yn9eUnsPCV/Ltwx3XBZtktBWYKee8xiO186vr 5kwfRchMg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtVb4-0004kw-BG; Thu, 09 Jul 2020 12:24:14 +0000 Received: from mga18.intel.com ([134.134.136.126]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtVb2-0004kG-HD for linux-arm-kernel@lists.infradead.org; Thu, 09 Jul 2020 12:24:13 +0000 IronPort-SDR: 4hRba01uCDtQOSjySuBaOagdikfPrOoPH7Yz+DdATLyIh2VQaPefWGR5CZtyOViY+phkZAZOp6 6qabiFnXANIg== X-IronPort-AV: E=McAfee;i="6000,8403,9676"; a="135439281" X-IronPort-AV: E=Sophos;i="5.75,331,1589266800"; d="scan'208";a="135439281" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jul 2020 05:24:05 -0700 IronPort-SDR: y4vJ4FSs9Z6jcJbUsoaKk2oiO26qlStbYq75/4DVBLgd7FD/0d0q/yAHnvQa53UgJnyEX3cm2y JZvKe7vq82Gw== X-IronPort-AV: E=Sophos;i="5.75,331,1589266800"; d="scan'208";a="484256280" Received: from unknown (HELO dalessan-mobl1.ir.intel.com) ([10.252.6.39]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jul 2020 05:24:01 -0700 Message-ID: <491f994c6f87a542e49fe37c8a75ab46f1b3712b.camel@linux.intel.com> Subject: Re: [PATCH 2/7] mailbox: keembay-scmi-mailbox: Add support for Keem Bay mailbox From: Daniele Alessandrelli To: Sudeep Holla , paul.j.murphy@linux.intel.com Date: Thu, 09 Jul 2020 13:23:56 +0100 In-Reply-To: <20200708203428.GB31671@bogus> References: <20200616155613.121242-1-daniele.alessandrelli@linux.intel.com> <20200616155613.121242-3-daniele.alessandrelli@linux.intel.com> <20200708203428.GB31671@bogus> User-Agent: Evolution 3.36.3 (3.36.3-1.fc32) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200709_082412_702463_D1A76066 X-CRM114-Status: GOOD ( 20.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Arnd Bergmann , Catalin Marinas , Jassi Brar , linux-kernel@vger.kernel.org, Dinh Nguyen , Rob Herring , Olof Johansson , Paul Murphy , Will Deacon , linux-arm-kernel@lists.infradead.org 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 Hi Sudeep, Thanks for your review. On Wed, 2020-07-08 at 21:34 +0100, Sudeep Holla wrote: > On Tue, Jun 16, 2020 at 04:56:08PM +0100, Daniele Alessandrelli > wrote: > > From: Paul Murphy > > > > 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. > Sorry, we didn't know about the SMC transport support for SCMI. Looks like it was added only recently, while our driver was already developed and waiting to be upstreamed. I agree that we can drop this driver and switch to the SMC transport as you suggested, but I think we'll have to modify our bootloader SiP service slightly. Paul, can you elaborate? Regards, Daniele _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel