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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61E1BC433FE for ; Thu, 27 Jan 2022 17:38:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244706AbiA0Rip (ORCPT ); Thu, 27 Jan 2022 12:38:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37862 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230270AbiA0Rin (ORCPT ); Thu, 27 Jan 2022 12:38:43 -0500 Received: from mail-ej1-x630.google.com (mail-ej1-x630.google.com [IPv6:2a00:1450:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E490C061714 for ; Thu, 27 Jan 2022 09:38:43 -0800 (PST) Received: by mail-ej1-x630.google.com with SMTP id me13so7355146ejb.12 for ; Thu, 27 Jan 2022 09:38:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=V5C74FdRuwoqpy1ViP/6GNBHpsGNGyUemK6FLnqIKus=; b=ObBTSXJZMANXgPLlcRDvZmDpM9KWzEyPz5AKJGGdQu1XE+FnSA0pJtbPkNJmuj2yxh AhqbFznG4jNh3flYvle88ujpEqYo6/nKmjuFZPhp8GyAF2RmHGxcuHBe5z7gZKEGY6tG LA73RCpgDJqJG0ZTyHMYk83uOVxrEozO6cbJB+smdXHwinxQPYpflGqi4LiWehAOVJ2v PdBLm8JpDuAO2CsmaaB/tXGSW1M/J+2m5cCM6cHJ2vk+AVHhkMAyv4rMvpU4b4/kNnFB UfCfrUVCMplnzWyfFV4ZY02E3wPXsxlH2hJtpSZN842ukUnvzIYxDDR9ZEF4ZmDF7l0P HyUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=V5C74FdRuwoqpy1ViP/6GNBHpsGNGyUemK6FLnqIKus=; b=dB5QfrD8UUx5rwRzrbzuKagKMY4MI05ms1ObnUcy2eZSf6sIxlMFxTRDLFxgeQNjw+ SgNGNmSp3KtJyBHNiETXTlKBjq7S8gziSZXukKIpGjJKoX2iL3+mIoziEBOZMceV3h5h idtZwUYWYWt4f3FOWzi4D3HYkKq8ctIe5uiFQfW6hfdgWp2wBu2oasKrzM3viJYEXlaC CcDPxIK9ulW5L1E907ytYqzyXodl6au2+ramrLq5NMzOvrjfFmNH45HWHu0pTJyMBpbh 9I1q4p9ZaBHnFxIeDYxJe8wRY7yVZU2MSHy4dTZbE1tMzt70BzSpyNr0IXHu0/gh2LwO keFw== X-Gm-Message-State: AOAM530xKtq9yoewRgl3zhST4rpg3upAqTSWYVbncCk88U3UwBW6/YVM Q0pmAP1F/b2z2Qi5WTzdUjFQLTNzaRn7PA== X-Google-Smtp-Source: ABdhPJwbwj4iZ4539t2iMlsQnN5OsKUNWNgMMPlqfk7h70aUhyR1H5t3uVkg1q/BbW6nK5m1ewWk2g== X-Received: by 2002:a17:906:6a0f:: with SMTP id qw15mr3934099ejc.66.1643305121701; Thu, 27 Jan 2022 09:38:41 -0800 (PST) Received: from orome ([193.209.96.43]) by smtp.gmail.com with ESMTPSA id co19sm11742662edb.7.2022.01.27.09.38.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jan 2022 09:38:40 -0800 (PST) Date: Thu, 27 Jan 2022 18:38:38 +0100 From: Thierry Reding To: Jon Hunter Cc: linux-tegra@vger.kernel.org Subject: Re: [PATCH] arm64: tegra: Disable ISO SMMU for Tegra194 Message-ID: References: <20220113143152.167583-1-jonathanh@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="0dffjVEj5IQlPdcO" Content-Disposition: inline In-Reply-To: <20220113143152.167583-1-jonathanh@nvidia.com> User-Agent: Mutt/2.1.5 (31b18ae9) (2021-12-30) Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org --0dffjVEj5IQlPdcO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 13, 2022 at 02:31:52PM +0000, Jon Hunter wrote: > Commit e762232f9466 ("arm64: tegra: Add ISO SMMU controller for Tegra194") > add the ISO SMMU for display devices on Tegra194. The SMMU is enabled by > default but no hooked up to the display controllers yet because we do not > have a way to pass frame-buffer memory from the bootloader to the kernel. > However, even though the SMMU is not hooked up to the display controllers > SMMU faults are being seen if a display is connected. Therefore, keep the > ISO SMMU disabled by default for now. >=20 > Fixes: e762232f9466 ("arm64: tegra: Add ISO SMMU controller for Tegra194") > Signed-off-by: Jon Hunter > --- > arch/arm64/boot/dts/nvidia/tegra194.dtsi | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Applied, thanks. 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