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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 59BB6C3A5A5 for ; Thu, 5 Sep 2019 08:45:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 36ED92070C for ; Thu, 5 Sep 2019 08:45:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731772AbfIEIpB (ORCPT ); Thu, 5 Sep 2019 04:45:01 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:59626 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731248AbfIEIpA (ORCPT ); Thu, 5 Sep 2019 04:45:00 -0400 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id D3A0125B753; Thu, 5 Sep 2019 18:44:58 +1000 (AEST) Received: by reginn.horms.nl (Postfix, from userid 7100) id C9EC1940AC6; Thu, 5 Sep 2019 10:44:56 +0200 (CEST) Date: Thu, 5 Sep 2019 10:44:56 +0200 From: Simon Horman To: Geert Uytterhoeven Cc: Joerg Roedel , Magnus Damm , iommu@lists.linux-foundation.org, linux-renesas-soc@vger.kernel.org, Hai Nguyen Pham Subject: Re: [PATCH 2/2] iommu/ipmmu-vmsa: Disable cache snoop transactions on R-Car Gen3 Message-ID: <20190905084456.bzbb2wpivignlyhr@verge.net.au> References: <20190904120802.2163-1-geert+renesas@glider.be> <20190904120802.2163-3-geert+renesas@glider.be> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190904120802.2163-3-geert+renesas@glider.be> Organisation: Horms Solutions BV User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org On Wed, Sep 04, 2019 at 02:08:02PM +0200, Geert Uytterhoeven wrote: > From: Hai Nguyen Pham > > According to the Hardware Manual Errata for Rev. 1.50 of April 10, 2019, > cache snoop transactions for page table walk requests are not supported > on R-Car Gen3. > > Hence, this patch removes setting these fields in the IMTTBCR register, > since it will have no effect, and adds comments to the register bit > definitions, to make it clear they apply to R-Car Gen2 only. > > Signed-off-by: Hai Nguyen Pham > [geert: Reword, add comments] > Signed-off-by: Geert Uytterhoeven Reviewed-by: Simon Horman