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=-8.5 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 4942EC5ACC3 for ; Mon, 10 Jun 2019 14:19:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C9E120862 for ; Mon, 10 Jun 2019 14:19:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2403817AbfFJOTo (ORCPT ); Mon, 10 Jun 2019 10:19:44 -0400 Received: from 212.199.177.27.static.012.net.il ([212.199.177.27]:35856 "EHLO herzl.nuvoton.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2390789AbfFJOTn (ORCPT ); Mon, 10 Jun 2019 10:19:43 -0400 X-Greylist: delayed 2771 seconds by postgrey-1.27 at vger.kernel.org; Mon, 10 Jun 2019 10:19:39 EDT Received: from taln60.nuvoton.co.il (ntil-fw [212.199.177.25]) by herzl.nuvoton.co.il (8.13.8/8.13.8) with ESMTP id x5ADWke9029720; Mon, 10 Jun 2019 16:32:46 +0300 Received: by taln60.nuvoton.co.il (Postfix, from userid 10070) id DA70061FCD; Mon, 10 Jun 2019 16:32:46 +0300 (IDT) From: Tomer Maimon To: olof@lixom.net, gregkh@linuxfoundation.org, arnd@arndb.de, robh+dt@kernel.org, mark.rutland@arm.com, avifishman70@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com, joel@jms.id.au Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, Tomer Maimon Subject: [PATCH v1 1/2] dt-binding: soc: Add common LPC snoop documentation Date: Mon, 10 Jun 2019 16:32:44 +0300 Message-Id: <20190610133245.306812-2-tmaimon77@gmail.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190610133245.306812-1-tmaimon77@gmail.com> References: <20190610133245.306812-1-tmaimon77@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Added device tree binding documentation for Nuvoton BMC NPCM BIOS Post Code (BPC) and Aspeed AST2500 LPC snoop. The LPC snoop monitoring two configurable I/O addresses written by the host on Low Pin Count (LPC) bus. Signed-off-by: Tomer Maimon Reviewed-by: Andrew Jeffery Reviewed-by: Rob Herring --- .../devicetree/bindings/soc/lpc/lpc-snoop.txt | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/lpc/lpc-snoop.txt diff --git a/Documentation/devicetree/bindings/soc/lpc/lpc-snoop.txt b/Documentation/devicetree/bindings/soc/lpc/lpc-snoop.txt new file mode 100644 index 000000000000..c21cb8df4ffb --- /dev/null +++ b/Documentation/devicetree/bindings/soc/lpc/lpc-snoop.txt @@ -0,0 +1,27 @@ +LPC snoop interface + +The LPC snoop (BIOS Post Code) interface can monitor +two configurable I/O addresses written by the host on +the Low Pin Count (LPC) bus. + +Nuvoton NPCM7xx LPC snoop supports capture double words, +when using capture double word only I/O address 1 is monitored. + +Required properties for lpc-snoop node +- compatible : "nuvoton,npcm750-lpc-bpc-snoop" for Poleg NPCM7XX + "aspeed,ast2500-lpc-snoop" for Aspeed AST2500. +- reg : specifies physical base address and size of the registers. +- interrupts : contain the LPC snoop interrupt with flags for falling edge. +- snoop-ports : contain monitor I/O addresses, at least one monitor I/O + address required + +Optional property for NPCM7xx lpc-snoop node +- nuvoton,lpc-en-dwcapture : enable capture double words support. + +Example: + lpc-snoop: lpc_snoop@f0007040 { + compatible = "nuvoton,npcm750-lpc-bpc-snoop"; + reg = <0xf0007040 0x14>; + snoop-ports = <0x80>; + interrupts = ; + }; -- 2.18.0