From patchwork Mon Mar 5 14:48:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 130638 Delivered-To: patch@linaro.org Received: by 10.46.66.2 with SMTP id p2csp2771457lja; Mon, 5 Mar 2018 06:49:56 -0800 (PST) X-Google-Smtp-Source: AG47ELvM2ihwGVD8fexERCVTZfjHEoYQlNW1Hdfxh7Fr/Dv0Kl8Db2PgX5KRKzy5bYtIx6uB/BmX X-Received: by 10.101.82.1 with SMTP id o1mr12600254pgp.37.1520261396488; Mon, 05 Mar 2018 06:49:56 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1520261396; cv=none; d=google.com; s=arc-20160816; b=0IIpSRm+ODh1qiQdevw3Wvp2GVW/STBkSOBzO2w9zLjUQh5RHimrEnFMuDfO7yYYMe PAcGvqkb25fWx68BeVV/LXGraEHQ6juscTY3JuGF5vsdaN6iKoVfFlTdLaRUXu1gTdOL Kj74RPGlbvRVnHyBPW6ZCTYWrIdy3wIhirPwki3QLaSRyW3St5v7MUSZWOb4sQ907i3j VIldzg2eB8gq6D3ZSDpuNZYydVjJUMihmOAIQWVIGISMWGvZMCzPaT/nNc52Ra8IJdyR /eVRga5nGNiBnC2nZNMWRpAHgg+9dru+XSDA2aHpvHK9kEN4ReXIpNSORayd8Xn2GbhD GaQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:arc-authentication-results; bh=HY7P2ykVO7aXNsFrmsUF9y8vdVz33rC24I8YDuRWDu0=; b=HffZ5Hxi1ZpCG1Y09XJZVsgEsi2qM/ZXwgp0JeyUUHK7OVwLX1nchm6pc7lXr4dA7+ 1qrNwuZiTAio5eU0iNoh0VddVw/TG8pfsSi4zVm6swKBkRn8PanV8WQYekKn9RsD5sBd R0pfdGHOLknx1MlIchBAS/soFWxTmaSz60FK/5wfM2eiVSTYgVMRB0uGu5IBg2I+KC5C SgSiDqC3gyCBFqaOFLPCE2wXZvc+4w2bUnIF9A6CeOt/3LSzlsB9mxvbcy2d3jFrypwz nruVstYbwg8x8cpfuxrCCVzJMXO+KWQjAD6sCspuuDvNC36G+VvUKRgZao4jH63eA7FT 5gEw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-scsi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-scsi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t192si8305847pgc.594.2018.03.05.06.49.56; Mon, 05 Mar 2018 06:49:56 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-scsi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-scsi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-scsi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932207AbeCEOtz (ORCPT + 1 other); Mon, 5 Mar 2018 09:49:55 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:6145 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932106AbeCEOtx (ORCPT ); Mon, 5 Mar 2018 09:49:53 -0500 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 5171F1AF4B58D; Mon, 5 Mar 2018 22:49:34 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.361.1; Mon, 5 Mar 2018 22:49:26 +0800 From: John Garry To: , , , CC: , , , , Xiaofei Tan , John Garry Subject: [PATCH v3 1/8] dt-bindings: scsi: hisi_sas: add an property of signal attenuation Date: Mon, 5 Mar 2018 22:48:43 +0800 Message-ID: <1520261330-204596-2-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1520261330-204596-1-git-send-email-john.garry@huawei.com> References: <1520261330-204596-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Xiaofei Tan For some new boards with hip07 chipset we are required to set PHY config registers differently. The hw property which determines how to set these registers is in the PHY signal attenuation readings. This patch add an devicetree property, "hisilicon,signal-attenuation", which is used to describe the signal attenuation of an board. Cc: Rob Herring Cc: Mark Rutland Signed-off-by: Xiaofei Tan Signed-off-by: John Garry --- Documentation/devicetree/bindings/scsi/hisilicon-sas.txt | 7 +++++++ 1 file changed, 7 insertions(+) -- 1.9.1 diff --git a/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt b/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt index df3bef7..8c6659e 100644 --- a/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt +++ b/Documentation/devicetree/bindings/scsi/hisilicon-sas.txt @@ -53,6 +53,13 @@ Main node required properties: Optional main node properties: - hip06-sas-v2-quirk-amt : when set, indicates that the v2 controller has the "am-max-transmissions" limitation. + - hisilicon,signal-attenuation : array of 3 32-bit values, containing de-emphasis, + preshoot, and boost attenuation readings for the board. They + are used to describe the signal attenuation of the board. These + values' range is 7600 to 12400, and used to represent -24dB to + 24dB. + The formula is "y = (x-10000)/10000". For example, 10478 + means 4.78dB. Example: sas0: sas@c1000000 {