From patchwork Tue Jul 16 22:45:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 11046803 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 88A1214F6 for ; Tue, 16 Jul 2019 22:45:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7812428607 for ; Tue, 16 Jul 2019 22:45:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6C38F28635; Tue, 16 Jul 2019 22:45:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1A4B028607 for ; Tue, 16 Jul 2019 22:45:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728746AbfGPWpZ (ORCPT ); Tue, 16 Jul 2019 18:45:25 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:36173 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388965AbfGPWpY (ORCPT ); Tue, 16 Jul 2019 18:45:24 -0400 Received: by mail-pf1-f194.google.com with SMTP id r7so9815493pfl.3 for ; Tue, 16 Jul 2019 15:45:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=n5NY9hcxy/qmq+InJeq+MZhB52hgL5/XHKuoEKWCJRY=; b=QQhDmz+Am7zIZWfhfkXcmZA4KTBLGRUoGtoM6MU/qb/jbJajF+li7TvgwLh/nbUZNT 32HiuWT7lxFOy4PNA9GA48nPUnKmJFwf7Bo11YiNOfjWgG3s6g0vkINmqLZ2NxSzQgwW LpwQxIbjBSMF8oNuHBZJ04Clp3Ojer4C09NC0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=n5NY9hcxy/qmq+InJeq+MZhB52hgL5/XHKuoEKWCJRY=; b=he37yGm9uKKzuqtKxUQ24Le44XE4GHR6gcY7sQyI74Zl9ETiaoC+FWtAX2q0m/q6QM yHFtLB8bs59ALMX7lk0cqR2NzyJNWT/E4NlEXvSY4WdZBnTY7PFgwl0xltjZp6fgO09k DcBJxsbVzn2tragB6YMeU04Y4VBk8TAI0CYmt1t4sKPyjzLc8V+z0vHB8MbjgxdL16Br ayBGmADecaU6GheDa1Lr5eZQ24Tk1OWOk22tmzM37kY0aYRWNtc8MPvdo15NmbOPU961 UEORyfikNql80tiwYqaA2rfedmaEhCKu7HcmLu23Th/E+kTT4fiXtnYtcQoePcxSDxf3 HFNg== X-Gm-Message-State: APjAAAV6MRLpY3dZGyMl6VlgeG3X2bdBvcEPomd+SzMdYxNcz+UhCyy4 629xzN8E9rwEOrjF5M7LtuP6lw== X-Google-Smtp-Source: APXvYqy9H7LyEYLNDeFy27ZQi/NQGBvJDuaRVOmlwxY2kPGjQcHSYWDcwox3EfLdlVSqYkgPX7Bgnw== X-Received: by 2002:a17:90a:d58c:: with SMTP id v12mr38933628pju.7.1563317123728; Tue, 16 Jul 2019 15:45:23 -0700 (PDT) Received: from smtp.gmail.com ([2620:15c:202:1:fa53:7765:582b:82b9]) by smtp.gmail.com with ESMTPSA id 64sm22182562pfe.128.2019.07.16.15.45.23 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 16 Jul 2019 15:45:23 -0700 (PDT) From: Stephen Boyd To: Peter Huewe , Jarkko Sakkinen Cc: Andrey Pronin , linux-kernel@vger.kernel.org, Jason Gunthorpe , Arnd Bergmann , Greg Kroah-Hartman , linux-integrity@vger.kernel.org, Duncan Laurie , Guenter Roeck , Rob Herring Subject: [PATCH v2 4/6] dt-bindings: tpm: document properties for cr50 Date: Tue, 16 Jul 2019 15:45:16 -0700 Message-Id: <20190716224518.62556-5-swboyd@chromium.org> X-Mailer: git-send-email 2.22.0.510.g264f2c817a-goog In-Reply-To: <20190716224518.62556-1-swboyd@chromium.org> References: <20190716224518.62556-1-swboyd@chromium.org> MIME-Version: 1.0 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Andrey Pronin Add TPM2.0 PTP FIFO compatible SPI interface for chips with Cr50 firmware. Signed-off-by: Andrey Pronin Reviewed-by: Rob Herring Signed-off-by: Stephen Boyd --- .../bindings/security/tpm/google,cr50.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/google,cr50.txt diff --git a/Documentation/devicetree/bindings/security/tpm/google,cr50.txt b/Documentation/devicetree/bindings/security/tpm/google,cr50.txt new file mode 100644 index 000000000000..401f4ba281b7 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/google,cr50.txt @@ -0,0 +1,19 @@ +* H1 Secure Microcontroller with Cr50 Firmware on SPI Bus. + +H1 Secure Microcontroller running Cr50 firmware provides several +functions, including TPM-like functionality. It communicates over +SPI using the FIFO protocol described in the PTP Spec, section 6. + +Required properties: +- compatible: Should be "google,cr50". +- spi-max-frequency: Maximum SPI frequency. + +Example: + +&spi0 { + cr50@0 { + compatible = "google,cr50"; + reg = <0>; + spi-max-frequency = <800000>; + }; +};