From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 07D9C17DFE3; Tue, 15 Oct 2024 08:20:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728980460; cv=none; b=kPfRGyp8vXwgYT1LaEGYMI3mWiRatvrWkToOiIP/nvZFIc45nItnnmGqd5n+YsUWFigYbIbj2nLpeAqUfn7juGbDq4Yu3M3J38ha0P1P236WFA+rp4XQ/OqAtB5W+gW6zGhGm+zPKhU00ERgsBIM6J1LqOHfEXqENSNgP1QHdoI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728980460; c=relaxed/simple; bh=BEsjhAloys+92l43HI3l8hVpnayCsccPCe1Fx59B3GY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=i8BM0Lh6Xhly+YeLT/+1EFj9DyhM/5UxOU3/wQ0N0K/oJRjMcCxJFeAlDAsDmKejyHT4VBqrrjkx7iBEuaXr7uSVVFjMbZBi7TAQoVUZbXQAObCDG0EHB9KHnKT2IGdhsJ36faCWpZ8uJaaB27FYivYmBZqhQYf9G9qyAmCREOw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WrzBY8Ig; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WrzBY8Ig" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D65AAC4CEC7; Tue, 15 Oct 2024 08:20:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728980459; bh=BEsjhAloys+92l43HI3l8hVpnayCsccPCe1Fx59B3GY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=WrzBY8Ig6dySzuCTHRPNFgnyUtKHfY4UW4jE4ULsCkHYtb2RPRFXQF4apvkS99OxK OzjWh9uIpl0vkns4114m2ttqMz12NEPFoCr43uZZ2rNN+lbMPIO5bVK8jwzjMccmR2 /N2zXEJ+yEleJ9wOYQv+9n4h1yJPKLh0RM/6BybaF7fYwQ8QSQ04VZwQpkjBxMdY06 lzhZTlHqGpu/bSJeGlgeBVSQUXZeyog1U2RrriLhtk/ajRK7UDbgYszLyI8tue24B6 7+KqqB+4382YnGrsyM/S33KbE7n9Zm+3J00VtcXxYpnNl+qkALTJ+XiDq7T6D6adC2 mk7Fb4fu6MtEg== Message-ID: Date: Tue, 15 Oct 2024 10:20:51 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/4] Add support for APPS SMMU on QCS615 To: Qingqing Zhou , andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, robimarko@gmail.com, will@kernel.org, robin.murphy@arm.com, joro@8bytes.org Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev References: <20241015081603.30643-1-quic_qqzhou@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 15/10/2024 10:15, Qingqing Zhou wrote: > Enable APPS SMMU function on QCS615 platform. APPS SMMU is required > for address translation in devices including Ethernet/UFS/USB and > so on. > > Add the SCM node for SMMU probing normally. SMMU driver probe will > check qcom_scm ready or not, without SCM node, SMMU driver probe will > defer. > The dmesg log without SCM node: > platform 15000000.iommu: deferred probe pending: arm-smmu: qcom_scm not ready > > With the SCM node, SMMU can probe normally, but SCM driver still fails > to probe because of one SCM bug: > qcom_scm firmware:scm: error (____ptrval____): Failed to enable the TrustZone memory allocator > qcom_scm firmware:scm: probe with driver qcom_scm failed with error 4 > The above SCM bug is fixed by: > https://lore.kernel.org/all/20241005140150.4109700-2-quic_kuldsing@quicinc.com/ > But above patch doesn't impact building of current patch series, this patch > series can build successfully without above patch. > > Dependency: > https://lore.kernel.org/all/20240926-add_initial_support_for_qcs615-v3-0-e37617e91c62@quicinc.com/ > > Changes in v2: > - Address the comments on bindings from Krzysztof. Which comments? Be specific what changed. Best regards, Krzysztof