From patchwork Mon Jul 12 22:04:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Winiarska, Iwona" X-Patchwork-Id: 12372435 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,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 6EB92C07E99 for ; Mon, 12 Jul 2021 22:09:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3EAAC6115A for ; Mon, 12 Jul 2021 22:09:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EAAC6115A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DMnlXxJA+FinhZKQbSY5U6ylGRlNppUCCtWK631CKMI=; b=GibSGBbAIN4NDf DeHb5dw2YXIq647lEHf4/q8j5yXT+j62Eh++0m+gO1iZBt6Jeq8CW9LaKXyhoS4T3ek8ebDgE6G3s 4Mf/UPise8jCejks2Psetic1ZmM86uL0+mds+2AJcyYqSMaZFd8FYrpYUaFFIYoIfVVXQACRW6rsw etf/qusFmZsXGDv8iqXRvavwKRbKMw961gDd6X/AyvA1ISt3CPM5q4WYdS6kOyvo2vNWQ9cqrG/4J gnWQRXJuuk3QiHMvpjx7hTmUvXhNYoB+igK9tT8PlrFegxScdM4CDzkKp4SmnJz42gTVotVE4YkZ8 kIkPXVuwJxomw4AsY5RQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m346J-008YMg-Hx; Mon, 12 Jul 2021 22:08:31 +0000 Received: from mga03.intel.com ([134.134.136.65]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3462-008YFy-6c for linux-arm-kernel@lists.infradead.org; Mon, 12 Jul 2021 22:08:16 +0000 X-IronPort-AV: E=McAfee;i="6200,9189,10043"; a="210105071" X-IronPort-AV: E=Sophos;i="5.84,235,1620716400"; d="scan'208";a="210105071" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2021 15:08:10 -0700 X-IronPort-AV: E=Sophos;i="5.84,235,1620716400"; d="scan'208";a="464374173" Received: from jzloch-mobl1.ger.corp.intel.com (HELO localhost) ([10.249.136.11]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2021 15:08:04 -0700 From: Iwona Winiarska To: linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org Cc: x86@kernel.org, devicetree@vger.kernel.org, linux-aspeed@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, Greg Kroah-Hartman , Rob Herring , Joel Stanley , Andrew Jeffery , Jean Delvare , Guenter Roeck , Jonathan Corbet , Thomas Gleixner , Andy Lutomirski , Ingo Molnar , Borislav Petkov , Yazen Ghannam , Mauro Carvalho Chehab , Pierre-Louis Bossart , Tony Luck , Andy Shevchenko , Jae Hyun Yoo , Iwona Winiarska Subject: [PATCH 04/14] dt-bindings: Add bindings for peci-aspeed Date: Tue, 13 Jul 2021 00:04:37 +0200 Message-Id: <20210712220447.957418-5-iwona.winiarska@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210712220447.957418-1-iwona.winiarska@intel.com> References: <20210712220447.957418-1-iwona.winiarska@intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210712_150814_496311_BB250899 X-CRM114-Status: GOOD ( 15.75 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add device tree bindings for the peci-aspeed controller driver. Co-developed-by: Jae Hyun Yoo Signed-off-by: Jae Hyun Yoo Signed-off-by: Iwona Winiarska --- .../devicetree/bindings/peci/peci-aspeed.yaml | 111 ++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 Documentation/devicetree/bindings/peci/peci-aspeed.yaml diff --git a/Documentation/devicetree/bindings/peci/peci-aspeed.yaml b/Documentation/devicetree/bindings/peci/peci-aspeed.yaml new file mode 100644 index 000000000000..6061e06009fb --- /dev/null +++ b/Documentation/devicetree/bindings/peci/peci-aspeed.yaml @@ -0,0 +1,111 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/peci/peci-aspeed.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Aspeed PECI Bus Device Tree Bindings + +maintainers: + - Iwona Winiarska + - Jae Hyun Yoo + +allOf: + - $ref: peci-controller.yaml# + +properties: + compatible: + enum: + - aspeed,ast2400-peci + - aspeed,ast2500-peci + - aspeed,ast2600-peci + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + description: | + Clock source for PECI controller. Should reference the external + oscillator clock. + maxItems: 1 + + resets: + maxItems: 1 + + clock-divider: + description: This value determines PECI controller internal clock + dividing rate. The divider will be calculated as 2 raised to the + power of the given value. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 7 + default: 0 + + msg-timing: + description: | + Message timing negotiation period. This value will determine the period + of message timing negotiation to be issued by PECI controller. The unit + of the programmed value is four times of PECI clock period. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 255 + default: 1 + + addr-timing: + description: | + Address timing negotiation period. This value will determine the period + of address timing negotiation to be issued by PECI controller. The unit + of the programmed value is four times of PECI clock period. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 255 + default: 1 + + rd-sampling-point: + description: | + Read sampling point selection. The whole period of a bit time will be + divided into 16 time frames. This value will determine the time frame + in which the controller will sample PECI signal for data read back. + Usually in the middle of a bit time is the best. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 15 + default: 8 + + cmd-timeout-ms: + description: | + Command timeout in units of ms. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 1000 + default: 1000 + +required: + - compatible + - reg + - interrupts + - clocks + - resets + +additionalProperties: false + +examples: + - | + #include + #include + peci-controller@1e78b000 { + compatible = "aspeed,ast2600-peci"; + reg = <0x1e78b000 0x100>; + interrupts = ; + clocks = <&syscon ASPEED_CLK_GATE_REF0CLK>; + resets = <&syscon ASPEED_RESET_PECI>; + clock-divider = <0>; + msg-timing = <1>; + addr-timing = <1>; + rd-sampling-point = <8>; + cmd-timeout-ms = <1000>; + }; +...