From patchwork Mon Dec 1 00:20:43 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Christophe Ricard X-Patchwork-Id: 5409611 Return-Path: X-Original-To: patchwork-tpmdd-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 41BBA9F37F for ; Mon, 1 Dec 2014 00:21:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6A04F2011B for ; Mon, 1 Dec 2014 00:21:27 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 610E1201F2 for ; Mon, 1 Dec 2014 00:21:26 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=sfs-ml-3.v29.ch3.sourceforge.com) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XvEk1-0007B1-CU; Mon, 01 Dec 2014 00:21:25 +0000 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XvEjz-0007Ao-9w for tpmdd-devel@lists.sourceforge.net; Mon, 01 Dec 2014 00:21:23 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.212.179 as permitted sender) client-ip=209.85.212.179; envelope-from=christophe.ricard@gmail.com; helo=mail-wi0-f179.google.com; Received: from mail-wi0-f179.google.com ([209.85.212.179]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1XvEjy-0005SD-I0 for tpmdd-devel@lists.sourceforge.net; Mon, 01 Dec 2014 00:21:23 +0000 Received: by mail-wi0-f179.google.com with SMTP id ex7so15702801wid.12 for ; Sun, 30 Nov 2014 16:21:16 -0800 (PST) X-Received: by 10.181.13.7 with SMTP id eu7mr65226020wid.72.1417393276593; Sun, 30 Nov 2014 16:21:16 -0800 (PST) Received: from localhost.localdomain (ax113-6-78-236-204-66.fbx.proxad.net. [78.236.204.66]) by mx.google.com with ESMTPSA id u5sm26176293wiz.9.2014.11.30.16.21.14 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 30 Nov 2014 16:21:15 -0800 (PST) From: Christophe Ricard X-Google-Original-From: Christophe Ricard To: peterhuewe@gmx.de, ashley@ashleylai.com, tpmdd@selhorst.net Date: Mon, 1 Dec 2014 01:20:43 +0100 Message-Id: <1417393247-4479-12-git-send-email-christophe-h.ricard@st.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1417393247-4479-1-git-send-email-christophe-h.ricard@st.com> References: <1417393247-4479-1-git-send-email-christophe-h.ricard@st.com> MIME-Version: 1.0 X-Spam-Score: -1.6 (-) X-Headers-End: 1XvEjy-0005SD-I0 Cc: devicetree@vger.kernel.org, christophe.ricard@gmail.com, jean-luc.blanc@st.com, tpmdd-devel@lists.sourceforge.net, christophe-h.ricard@st.com Subject: [tpmdd-devel] [PATCH v5 11/15] tpm/tpm_i2c_stm_st33/dts/st33zp24_i2c: Add DTS Documentation X-BeenThere: tpmdd-devel@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Tpm Device Driver maintainance List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tpmdd-devel-bounces@lists.sourceforge.net X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,HK_RANDOM_ENVFROM,RCVD_IN_DNSWL_HI,T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP st33zp24 tpm can be seen as a trivial i2c device as other i2c tpm. However several other properties needs to be documented such as lpcpd. Reviewed-by: Jason Gunthorpe Signed-off-by: Christophe Ricard --- .../devicetree/bindings/security/tpm/st33zp24.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/st33zp24.txt diff --git a/Documentation/devicetree/bindings/security/tpm/st33zp24.txt b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt new file mode 100644 index 0000000..eb48222 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt @@ -0,0 +1,36 @@ +* STMicroelectronics SAS. ST33ZP24 TPM SoC + +Required properties: +- compatible: Should be "st,st33zp24_i2c". +- clock-frequency: I²C work frequency. +- reg: address on the bus + +Optional ST33ZP24 Properties: +- interrupt-parent: phandle for the interrupt gpio controller +- interrupts: GPIO interrupt to which the chip is connected +- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state. +If set vps must present when the platform is going into sleep/hibernate mode. + +Optional SoC Specific Properties: +- pinctrl-names: Contains only one value - "default". +- pintctrl-0: Specifies the pin control groups used for this controller. + +Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2): + +&i2c2 { + + status = "okay"; + + st33zp24: st33zp24@13 { + + compatible = "st,st33zp24_i2c"; + + reg = <0x013>; + clock-frequency = <400000>; + + interrupt-parent = <&gpio5>; + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; + + lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>; + }; +};