From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17B5CC3A5A1 for ; Wed, 28 Aug 2019 08:22:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF1162189D for ; Wed, 28 Aug 2019 08:22:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="V/w56ls6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726463AbfH1IV6 (ORCPT ); Wed, 28 Aug 2019 04:21:58 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:36271 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726326AbfH1IVx (ORCPT ); Wed, 28 Aug 2019 04:21:53 -0400 Received: by mail-pf1-f194.google.com with SMTP id w2so1231513pfi.3 for ; Wed, 28 Aug 2019 01:21:53 -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=kznkhzmN9JbxPn8XUCQRZKmUtSzS9jvDsbj/mMs4NBw=; b=V/w56ls6Ay3QOsjzTzGMPhv5Vyszl4x1jFxXn9EJH/k56sAYTvaFi10tNPzVtMJSbH /gRA3fNGWlxLv54fYDaWsHXL1FNteIaSVyG7vptX6wPRDbK3MP567XC2Mt6eaSZ83eZ7 baYS0udHyP0c38OrnkQzU1Vn1pP/iczxU/Q+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=kznkhzmN9JbxPn8XUCQRZKmUtSzS9jvDsbj/mMs4NBw=; b=U2w4xbH4hQrTvJcK1k31ZEly4G58Uzs5L5xAR+riFAzmDt9jDopMnf3sfTqadgzvAh VdogXhY0Cx2i7j/6L84E81KTTMBlG0D4BzD/Fpm/nM3bufuHi9zfjaLw41l+eebvcMpB 4hr6CAjSnwsDnw1Hi/82b9Zla4nEB9EjejIgyT83s2mAS13STfjobSvx6oyvVv5jlqel Hl4tpMku8xVmsODFIUomX6IXxMW3JmuNrWp+R2z2zHVKkPolRE0kuIJSk3qtUNFN4zJv vyz7a20gIKPnYZCVSE0lITeWTHNfjAU3PANIrAOYOZb1nyEKREOJL6sMUWlBij5q7Yxz KiIw== X-Gm-Message-State: APjAAAWDNFfiC31DySZ2RqXjny/rOBVRIs0PkNIeg2JxDkpCX78irrHG kOyFbhxnhGYy8gtpHqUTkm1IJg== X-Google-Smtp-Source: APXvYqxWNOyFreSUkBxhGLUQ4zpSt5YnnHrl0WCgaMOGDT4bhiCpMhx0tCx5KBolsLoPKxdcz8/NNg== X-Received: by 2002:a63:2043:: with SMTP id r3mr2397965pgm.311.1566980512951; Wed, 28 Aug 2019 01:21:52 -0700 (PDT) Received: from smtp.gmail.com ([2620:15c:202:1:fa53:7765:582b:82b9]) by smtp.gmail.com with ESMTPSA id y10sm1296959pjp.27.2019.08.28.01.21.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Aug 2019 01:21:52 -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 , Heiko Stuebner , Rob Herring Subject: [PATCH v5 1/4] dt-bindings: tpm: document properties for cr50 Date: Wed, 28 Aug 2019 01:21:47 -0700 Message-Id: <20190828082150.42194-2-swboyd@chromium.org> X-Mailer: git-send-email 2.23.0.187.g17f5b7556c-goog In-Reply-To: <20190828082150.42194-1-swboyd@chromium.org> References: <20190828082150.42194-1-swboyd@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Cc: Heiko Stuebner 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..cd69c2efdd37 --- /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>; + }; +}; -- Sent by a computer through tubes