From patchwork Tue Sep 29 08:22:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ran Wang X-Patchwork-Id: 1373142 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4C0t703VjFz9sRR for ; Tue, 29 Sep 2020 18:37:32 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nxp.com Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4C0t6y4m7gzDqWL for ; Tue, 29 Sep 2020 18:37:30 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nxp.com (client-ip=92.121.34.21; helo=inva021.nxp.com; envelope-from=ran.wang_1@nxp.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=nxp.com Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4C0szw61RHzDqSc for ; Tue, 29 Sep 2020 18:31:23 +1000 (AEST) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id BCE71200375; Tue, 29 Sep 2020 10:31:19 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 1222D2015A0; Tue, 29 Sep 2020 10:31:16 +0200 (CEST) Received: from localhost.localdomain (mega.ap.freescale.net [10.192.208.232]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 27BE7402F0; Tue, 29 Sep 2020 10:31:11 +0200 (CEST) From: Ran Wang To: Li Yang , Rob Herring , Shawn Guo Subject: [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl, ippdexpcr1-alt-reg' property Date: Tue, 29 Sep 2020 16:22:30 +0800 Message-Id: <20200929082234.36619-1-ran.wang_1@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Biwen Li , linux-kernel@vger.kernel.org, Ran Wang , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Biwen Li The 'fsl,ippdexpcr1-alt-reg' property is used to handle an errata A-008646 on LS1021A. Signed-off-by: Biwen Li Signed-off-by: Ran Wang --- Change in v3: - Simplize related proterty definition and rename it. Change in v2: - None Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt index 5a33619..62a22fc 100644 --- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt +++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt @@ -34,6 +34,9 @@ Chassis Version Example Chips Optional properties: - little-endian : RCPM register block is Little Endian. Without it RCPM will be Big Endian (default case). + - fsl,ippdexpcr1-alt-reg : The property is trying to workaround a + hardware issue (found on SoC LS1021A only), if pressent, RCPM driver + will use SCFG_SPARECR8 as a shadow register for RCPM_IPPDEXPCR1. Example: The RCPM node for T4240: @@ -43,6 +46,15 @@ The RCPM node for T4240: #fsl,rcpm-wakeup-cells = <2>; }; +The RCPM node for LS1021A: + rcpm: rcpm@1ee2140 { + compatible = "fsl,ls1021a-rcpm", "fsl,qoriq-rcpm-2.1+"; + reg = <0x0 0x1ee2140 0x0 0x8>; + #fsl,rcpm-wakeup-cells = <2>; + fsl,ippdexpcr1-alt-reg; + }; + + * Freescale RCPM Wakeup Source Device Tree Bindings ------------------------------------------- Required fsl,rcpm-wakeup property should be added to a device node if the device