From patchwork Mon Oct 13 20:19:34 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Christophe Ricard X-Patchwork-Id: 399286 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 ozlabs.org (Postfix) with ESMTPS id 7B20F14009B for ; Tue, 14 Oct 2014 07:20:24 +1100 (EST) Received: from localhost ([127.0.0.1] helo=sfs-ml-1.v29.ch3.sourceforge.com) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Xdm6Q-0002f9-4f; Mon, 13 Oct 2014 20:20:22 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Xdm6O-0002eg-AZ for tpmdd-devel@lists.sourceforge.net; Mon, 13 Oct 2014 20:20:20 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 74.125.82.44 as permitted sender) client-ip=74.125.82.44; envelope-from=christophe.ricard@gmail.com; helo=mail-wg0-f44.google.com; Received: from mail-wg0-f44.google.com ([74.125.82.44]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Xdm6N-0004dX-H5 for tpmdd-devel@lists.sourceforge.net; Mon, 13 Oct 2014 20:20:20 +0000 Received: by mail-wg0-f44.google.com with SMTP id y10so9316131wgg.3 for ; Mon, 13 Oct 2014 13:20:13 -0700 (PDT) X-Received: by 10.180.7.233 with SMTP id m9mr1129254wia.39.1413231613344; Mon, 13 Oct 2014 13:20:13 -0700 (PDT) Received: from localhost.localdomain (ax113-6-78-236-204-66.fbx.proxad.net. [78.236.204.66]) by mx.google.com with ESMTPSA id fa7sm17792819wjd.27.2014.10.13.13.20.11 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 13 Oct 2014 13:20:12 -0700 (PDT) From: Christophe Ricard X-Google-Original-From: Christophe Ricard To: peterhuewe@gmx.de, ashley@ashleylai.com, tpmdd@selhorst.net Date: Mon, 13 Oct 2014 22:19:34 +0200 Message-Id: <1413231580-4970-11-git-send-email-christophe-h.ricard@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1413231580-4970-1-git-send-email-christophe-h.ricard@st.com> References: <1413231580-4970-1-git-send-email-christophe-h.ricard@st.com> MIME-Version: 1.0 X-Spam-Score: -1.6 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (christophe.ricard[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1Xdm6N-0004dX-H5 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 v2 09/15] 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 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. 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>; + }; +};