From patchwork Thu Feb 11 23:46:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 1439731 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=WO0wSo3j; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4DcCxm6ZMPz9sBJ for ; Fri, 12 Feb 2021 10:48:28 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230337AbhBKXsQ (ORCPT ); Thu, 11 Feb 2021 18:48:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46824 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230244AbhBKXrN (ORCPT ); Thu, 11 Feb 2021 18:47:13 -0500 Received: from mail-pg1-x534.google.com (mail-pg1-x534.google.com [IPv6:2607:f8b0:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80E04C06178A for ; Thu, 11 Feb 2021 15:46:30 -0800 (PST) Received: by mail-pg1-x534.google.com with SMTP id t11so5056513pgu.8 for ; Thu, 11 Feb 2021 15:46:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Gwpmc0x1+3eFyR/7BUUjdFio04J+RxJRu7OO5iEL6OM=; b=WO0wSo3j+XaM9YaYHbZhCBQTUA7k48YCAkeLLXG/SjngCPEgOa+wAvMxV2TPCD/qvh 0fkme8eCctnok0ahmPDDDgxEkD+RW1+4aJueNg1Y3ZPvt3IjOHEnKDID7ewATFrq9zpo fSj9BxnHyc7QZOdKJlXLnF4keh6RIAzIl5WS07h44J9qG26IR4DBd5uNzHeFwbXP/puE B29RUK5RkBKvLKNJulOKT0aSt7EiuqK3kMRDlrR2pmEDpTJPC9AM+ocTJZltBa1sQNhQ wV8C90YueHgfVHmAI9NIue9ErJ0P0DgASlEgwmEyfS+qbuKRuY3vqs8gub33yAtz94wp y5kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Gwpmc0x1+3eFyR/7BUUjdFio04J+RxJRu7OO5iEL6OM=; b=HA1fRk3zGsOXJx6D2DDFPTDawnSF67W1NkAcWgQhq64icOyUwBNkMT/1/BPLIFQ1Ru xccaa4W8mqvKsELfBQ2CcoS806NEJo9iCASLcij0s9Vb335YvWdLpqhhIM99FV+JMcPV Nmg37ylus/sbj5HKzvQczOHF+oWx3E6fEDNziikL3AMwH+Z8HoDzuyXAr7BLmVEDxACZ ozxj61jH9mTC7i7EYs9eWeWx7BTWAnMRCKDMTfAw/y8smG82gJjdZCwExbV+p13bYSsY yHJSSWU6DBmToTWtPq0gn6sxC6/84m9e3SITGzu9qkYXki5Jcy8pbPpabXVILGFuh0Nd gVFQ== X-Gm-Message-State: AOAM531IA1EDCRfNMJRVXEwqAlj0F+3HOvW6/8640YVS5C1BQsA+gjbK gTk/IpDPA6cytY97e1md74qHJA== X-Google-Smtp-Source: ABdhPJyoshmN5hyMIWVnq14r/Vp9QrsrpigZcMtxfRIKShVYx5fnja/+wwPeHN7sZeaMkTBfgb2VSQ== X-Received: by 2002:a63:43c6:: with SMTP id q189mr505041pga.245.1613087190012; Thu, 11 Feb 2021 15:46:30 -0800 (PST) Received: from xps15.cg.shawcable.net (S0106889e681aac74.cg.shawcable.net. [68.147.0.187]) by smtp.gmail.com with ESMTPSA id iq6sm5932740pjb.6.2021.02.11.15.46.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Feb 2021 15:46:29 -0800 (PST) From: Mathieu Poirier To: ohad@wizery.com, bjorn.andersson@linaro.org, arnaud.pouliquen@st.com Cc: robh+dt@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 01/19] dt-bindings: remoteproc: Add bindind to support autonomous processors Date: Thu, 11 Feb 2021 16:46:09 -0700 Message-Id: <20210211234627.2669674-2-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210211234627.2669674-1-mathieu.poirier@linaro.org> References: <20210211234627.2669674-1-mathieu.poirier@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch adds a binding to guide the remoteproc core on how to deal with remote processors in two cases: 1) When an application holding a reference to a remote processor character device interface crashes. 2) when the platform driver for a remote processor is removed. In both cases if "autonomous-on-core-reboot" is specified in the remote processor DT node, the remoteproc core will detach the remote processor rather than switching it off. Signed-off-by: Mathieu Poirier Reviewed-by: Rob Herring --- .../bindings/remoteproc/remoteproc-core.yaml | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml b/Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml new file mode 100644 index 000000000000..e8bb8ef9031a --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/remoteproc-core.yaml @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/remoteproc-core.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Binding(s) for a primary processor applicable to all ancillary + processors + +maintainers: + - Bjorn Andersson + - Mathieu Poirier + +description: + This document defines the bindings used by a primary processor to determine + the state it should leave an ancillary processor when the former is no longer + functioning. + +properties: + autonomous-on-core-reboot: + $ref: /schemas/types.yaml#/definitions/flag + description: + When specified the ancillary processor should be left operational when + the primary processor is no longer available. Otherwise the ancillary + processor should be made inoperative. + +additionalProperties: true