From patchwork Tue Apr 16 11:16:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomer Maimon X-Patchwork-Id: 1086248 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44k2sH6THtz9sBV for ; Tue, 16 Apr 2019 21:17:39 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728886AbfDPLRY (ORCPT ); Tue, 16 Apr 2019 07:17:24 -0400 Received: from 212.199.177.27.static.012.net.il ([212.199.177.27]:33290 "EHLO herzl.nuvoton.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728147AbfDPLRX (ORCPT ); Tue, 16 Apr 2019 07:17:23 -0400 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 x3GAka43014005; Tue, 16 Apr 2019 13:46:36 +0300 Received: by taln60.nuvoton.co.il (Postfix, from userid 10070) id D5A2563001; Tue, 16 Apr 2019 14:16:32 +0300 (IDT) From: Tomer Maimon To: gregkh@linuxfoundation.org, arnd@arnd.de, robh+dt@kernel.org, mark.rutland@arm.com, yuenn@google.com, venture@google.com, brendanhiggins@google.com, avifishman70@gmail.com, joel@jms.id.au Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, openbmc@lists.ozlabs.org, linux-kernel@vger.kernel.org, Tomer Maimon Subject: [PATCH v2 1/2] dt-binding: misc: Add common LPC snoop documentation Date: Tue, 16 Apr 2019 14:16:30 +0300 Message-Id: <20190416111631.356803-2-tmaimon77@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20190416111631.356803-1-tmaimon77@gmail.com> References: <20190416111631.356803-1-tmaimon77@gmail.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Added device tree binding documentation for Nuvoton BMC NPCM BIOS Post Code (BPC) and Apeed 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/misc/lpc-snoop.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/lpc-snoop.txt diff --git a/Documentation/devicetree/bindings/misc/lpc-snoop.txt b/Documentation/devicetree/bindings/misc/lpc-snoop.txt new file mode 100644 index 000000000000..c21cb8df4ffb --- /dev/null +++ b/Documentation/devicetree/bindings/misc/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 = ; + };