From patchwork Mon Aug 12 22:36:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 11090961 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 8B193112C for ; Mon, 12 Aug 2019 22:36:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7AD3327F90 for ; Mon, 12 Aug 2019 22:36:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6DDC628384; Mon, 12 Aug 2019 22:36:36 +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 0E8B927F90 for ; Mon, 12 Aug 2019 22:36:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727205AbfHLWga (ORCPT ); Mon, 12 Aug 2019 18:36:30 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:41108 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727194AbfHLWg3 (ORCPT ); Mon, 12 Aug 2019 18:36:29 -0400 Received: by mail-pg1-f196.google.com with SMTP id x15so39852174pgg.8 for ; Mon, 12 Aug 2019 15:36:29 -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=pbLJacb6MCh29sDmogMC5h9hCymvEateyvCVNbUfmp0=; b=AEbhrZIj9L570kQMqoryJFGF2aST4nMckbDoihfMAMRyTUCHFi6Ut0bR+e+RXtYm/U MXuKioSk/vI5utYPt24IRcbOVwc0DCsUn2PZKC7Ms5olCCzRtnYK5HcSKaVz06P1uSWr bZusf6mtHlyCAET4JMEufjD6pmZJ6MqwUKup8= 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=pbLJacb6MCh29sDmogMC5h9hCymvEateyvCVNbUfmp0=; b=CZwhhKEV2AnFvlREzF72ZkVj7VIPD2Z/WfdVwZuhygCa6a+vgkuSAvQ2JJfHMqRPKS BtxTECDXehBp9yslj6PljbZGNN7rR+adqSd5wmUTKg6sCwp904yLvQkiVwPy7W9up3wd NLEnWPmnpw6RuMbPQelppZ5VXImtT0hvL2gj8ve2p4y/9VnNzHZWpzaZen5zQPjYHamE KN0QI9gTEVKz0WaVBuLrV1C3NVJjiBW9ui16I5iGlqUtyNpnIS/NkG6iypH8PIDyzDHO EHCsVhwpmgUkmoPpJ3ZdvFHwVzuP12sVe2kcescDkGJM06qT+ApDGCnxMzoafGG5Vf6v r1Kg== X-Gm-Message-State: APjAAAUIvMJ8HWb4/7fhuEX3mrLTFyJBq825FWyBgJtoVLZ2+TKbhUuF ea/BogCf0cqs5ZxMPGHolVzvYg== X-Google-Smtp-Source: APXvYqzmmF4BEegcpnS/e+KMA+yvCSfeLCUG6UJMXyZthuybe6012WcUe4Lc93X5m141O03baC5izQ== X-Received: by 2002:a17:90a:c596:: with SMTP id l22mr1444056pjt.46.1565649388818; Mon, 12 Aug 2019 15:36:28 -0700 (PDT) Received: from smtp.gmail.com ([2620:15c:202:1:fa53:7765:582b:82b9]) by smtp.gmail.com with ESMTPSA id b6sm93911594pgq.26.2019.08.12.15.36.28 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 12 Aug 2019 15:36:28 -0700 (PDT) From: Stephen Boyd To: Peter Huewe , Jarkko Sakkinen Cc: Andrey Pronin , linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, Duncan Laurie , Jason Gunthorpe , Arnd Bergmann , Greg Kroah-Hartman , Guenter Roeck , Alexander Steffen , Rob Herring Subject: [PATCH v4 5/6] dt-bindings: tpm: document properties for cr50 Date: Mon, 12 Aug 2019 15:36:21 -0700 Message-Id: <20190812223622.73297-6-swboyd@chromium.org> X-Mailer: git-send-email 2.23.0.rc1.153.gdeed80330f-goog In-Reply-To: <20190812223622.73297-1-swboyd@chromium.org> References: <20190812223622.73297-1-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. Cc: Andrey Pronin Cc: Duncan Laurie Cc: Jason Gunthorpe Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Guenter Roeck Cc: Alexander Steffen 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..7aa65224c8b9 --- /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 { + tpm@0 { + compatible = "google,cr50"; + reg = <0>; + spi-max-frequency = <800000>; + }; +};