From patchwork Thu Jun 13 18:09:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 10993443 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 02F661398 for ; Thu, 13 Jun 2019 18:10:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB2881FFD8 for ; Thu, 13 Jun 2019 18:10:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DF10826AE3; Thu, 13 Jun 2019 18:10:12 +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 8F7C62675C for ; Thu, 13 Jun 2019 18:10:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725889AbfFMSKM (ORCPT ); Thu, 13 Jun 2019 14:10:12 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:44110 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728657AbfFMSJh (ORCPT ); Thu, 13 Jun 2019 14:09:37 -0400 Received: by mail-pl1-f195.google.com with SMTP id t7so5859835plr.11 for ; Thu, 13 Jun 2019 11:09:37 -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=bvG2ZWdGwzdw20Vaj21QLD8aycjtnHcWUCoyGpGKEWY=; b=lzPIFdjzUR/wFnx/fMUjNPupfoWmxca3DM5UVu8+hd4R5sq7M+qvUbC8nuCpVO8lPv 9Uj0Vm6UxWmyVZHBpiN+aUFDlfeXO3TKAyqodZOOWA11O0rRLIXCs4L3VmB04JwMf4v0 YSq8BckegDspgDNZeogG2mhkHUr+sZrTM9M/A= 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=bvG2ZWdGwzdw20Vaj21QLD8aycjtnHcWUCoyGpGKEWY=; b=OuDYgqekkjZZuB4UG5x2ljeq+I5MS5ytK0l4adGvKh/CoOpGlwXWG9FUo7gP118Y2u r9ig1ZM329kYPM2rmPqq0C0pKbePOFFK3aDpoBDkAYrEnj4Gf13ieQh/mc8LmjcW6hiV MbZY/prqIAVC018FS7ZZrwJGdZJroaCz6fNS5lSKWnBIUZLpext8HTBqQDQuciHQiBjO BVyRjrxdjPsIc4L3qL/mzhFqc7GXwZAZPiMaMLmbF9pIXb6Eby14mmwdjXOrINUG8Vvl S5c+txVB8dzyDgnF2+5/cY6MMIHegfUusPopkzLm+FFMxTC0HE9PR8oX/gmbDKjJ7FVS HSSQ== X-Gm-Message-State: APjAAAU/LpbwoXz1YOpig6FddwHWYRAHI+QwXj/yHRiDZScdtQAqaJ/d 6DxQBU3IcF+Rbs9C9kdZD1FJmzBOTGc= X-Google-Smtp-Source: APXvYqyWsi8I0Z/Xyw4W9vvyu3c+zI7NliEjaHBXNJQGMPyffoOtEx4GKM8WmXQU7xvAUKnPRu1EmQ== X-Received: by 2002:a17:902:2926:: with SMTP id g35mr43540886plb.269.1560449376868; Thu, 13 Jun 2019 11:09:36 -0700 (PDT) Received: from smtp.gmail.com ([2620:15c:202:1:fa53:7765:582b:82b9]) by smtp.gmail.com with ESMTPSA id b15sm454449pff.31.2019.06.13.11.09.35 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 13 Jun 2019 11:09:36 -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, devicetree@vger.kernel.org, Duncan Laurie , Guenter Roeck , Rob Herring Subject: [PATCH 4/8] dt-bindings: tpm: document properties for cr50 Date: Thu, 13 Jun 2019 11:09:27 -0700 Message-Id: <20190613180931.65445-5-swboyd@chromium.org> X-Mailer: git-send-email 2.22.0.rc2.383.gf4fbbf30c2-goog In-Reply-To: <20190613180931.65445-1-swboyd@chromium.org> References: <20190613180931.65445-1-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 Cc: Rob Herring Signed-off-by: Stephen Boyd Reviewed-by: Rob Herring --- This is a resend of https://lkml.kernel.org/r/1469757314-116169-2-git-send-email-apronin@chromium.org with status removed. .../bindings/security/tpm/cr50_spi.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/cr50_spi.txt diff --git a/Documentation/devicetree/bindings/security/tpm/cr50_spi.txt b/Documentation/devicetree/bindings/security/tpm/cr50_spi.txt new file mode 100644 index 000000000000..401f4ba281b7 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/cr50_spi.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>; + }; +};