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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 2C3EAC4361B for ; Tue, 15 Dec 2020 16:04:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EED8122509 for ; Tue, 15 Dec 2020 16:04:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730795AbgLOQDq (ORCPT ); Tue, 15 Dec 2020 11:03:46 -0500 Received: from mx2.suse.de ([195.135.220.15]:60806 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730659AbgLOP5X (ORCPT ); Tue, 15 Dec 2020 10:57:23 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 352ECACF9; Tue, 15 Dec 2020 15:56:41 +0000 (UTC) From: Nicolas Saenz Julienne To: srinivas.kandagatla@linaro.org, Saenz Julienne , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, robh+dt@kernel.org, tim.gover@raspberrypi.com, phil@raspberrypi.com Subject: [PATCH 1/6] dt-bindings: nvmem: Add bindings for rmem driver Date: Tue, 15 Dec 2020 16:56:21 +0100 Message-Id: <20201215155627.2513-2-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201215155627.2513-1-nsaenzjulienne@suse.de> References: <20201215155627.2513-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Firmware/co-processors might use reserved memory areas in order to pass data stemming from an nvmem device otherwise non accessible to Linux. For example an EEPROM memory only physically accessible to firmware, or data only accessible early at boot time. Introduce the dt-bindings to nvmem's rmem. Signed-off-by: Nicolas Saenz Julienne --- .../devicetree/bindings/nvmem/rmem.yaml | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/rmem.yaml diff --git a/Documentation/devicetree/bindings/nvmem/rmem.yaml b/Documentation/devicetree/bindings/nvmem/rmem.yaml new file mode 100644 index 000000000000..3037ebc4634d --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/rmem.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/rmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Reserved Memory Based nvmem Device + +maintainers: + - Nicolas Saenz Julienne + +properties: + compatible: + enum: + - nvmem-rmem + + memory-region: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the reserved memory region + +required: + - compatible + - memory-region + +additionalProperties: false + +examples: + - | + fw-config { + compatible = "nvmem-rmem"; + memory-region = <&mem>; + }; + +... -- 2.29.2