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 73C7EC433F5 for ; Mon, 7 Mar 2022 14:16:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243127AbiCGORa (ORCPT ); Mon, 7 Mar 2022 09:17:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243086AbiCGORP (ORCPT ); Mon, 7 Mar 2022 09:17:15 -0500 Received: from smtp1.axis.com (smtp1.axis.com [195.60.68.17]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A98088EB52; Mon, 7 Mar 2022 06:16:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; q=dns/txt; s=axis-central1; t=1646662579; x=1678198579; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=TaZzkNMvcFak609V5gjWjr2ZiX5c1heN+EdAxQCepfE=; b=lcyX1Fp4POJF6YrkNk/MzrgEwAXN8o7QZZyTQPQ4Gm1xwzmKJKWLA3kI 2o0bZ4OVMvZDhy3GP3OJ7mcAqsd40QOtZah2tw3lum8nhbS5evYfHPysl pDlop18609Na38nWKIbWOxyOjA7pwoCmNVM9sHjW5WEpn7jgqfa6Cofg5 3Q60i9T6c5RD7c0pSwpS/71HwWhXciFQkn+wk4n3O9+oCrWI4ZPR5WHiV kd7JOnurtNjgWtFL4MiH7u2SsYzCkN6JfvI0YrjA0V4e93k08nI5AuZVO rcifoIjVgNIHDKfPZ9oct9ekO4+QaxqxP0BUgtrpfOE7vOZVoRY5ADBrf A==; From: Vincent Whitchurch To: , , , CC: , , , , , , , Vincent Whitchurch Subject: [PATCH 2/4] dt-bindings: reserved-memory: Add phram Date: Mon, 7 Mar 2022 15:15:47 +0100 Message-ID: <20220307141549.2732179-3-vincent.whitchurch@axis.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220307141549.2732179-1-vincent.whitchurch@axis.com> References: <20220307141549.2732179-1-vincent.whitchurch@axis.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add bindings to allow MTD/block devices to be created in reserved-memory regions using the "phram" driver. This allows things like partitioning to be specified via the existing devicetree bindings. Signed-off-by: Vincent Whitchurch --- .../bindings/reserved-memory/phram.yaml | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/reserved-memory/phram.yaml diff --git a/Documentation/devicetree/bindings/reserved-memory/phram.yaml b/Documentation/devicetree/bindings/reserved-memory/phram.yaml new file mode 100644 index 000000000000..92e7a80ee87a --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/phram.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reserved-memory/phram.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MTD/block device in RAM + +description: | + Use the reserved memory region as an MTD or block device. + + If no-map is not set, cached mappings will be used for the memory region. + +maintainers: + - Vincent Whitchurch + +allOf: + - $ref: "reserved-memory.yaml" + - $ref: "../mtd/mtd.yaml" + +properties: + compatible: + const: phram + + reg: + description: region of memory that contains the MTD/block device + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + + phram: flash@12340000 { + compatible = "phram"; + label = "rootfs"; + reg = <0x12340000 0x00800000>; + }; + }; -- 2.34.1