From patchwork Thu Mar 7 08:41:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Muellner X-Patchwork-Id: 10842413 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 CF02214E1 for ; Thu, 7 Mar 2019 08:42:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BAC112E065 for ; Thu, 7 Mar 2019 08:42:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AECE82E097; Thu, 7 Mar 2019 08:42:43 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 655052E065 for ; Thu, 7 Mar 2019 08:42:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=IjslPVF2wi0bxlHdD8zeQDBkGs9sFFob6oAX6EaV+fU=; b=MxcDZbmqck91zilG4EKHW/CxJH x++BV4TTZQQmgN/5oZDTxJ17DedDZtFAwk9pSr+5KRifD2JNtaYYdemO+w1P5eJomy282jYtBKhrk CGXMe+lZe51FWUPCUvY9YXH3u0J8UrYiOplVYw/dMQ67pEKZPmQDhUCCaIQlzd1G6XF3zpqtKLB53 EqxnrMfMm7fAfSWFyadCyFnBPcJzf+Wb6yhblK0YYisY/lnTiE3+1Ydf1lKQ9X/OmWqmwBLc3yoV0 n5YFFaQq42RXCLvrWyB8KkkoEoA80y0z3vJGKwAj/dOR0P5yGnPP29/NF0DmyiUBJ24Ci6rAf4Faf w9uKNa6w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1obv-0003a2-7M; Thu, 07 Mar 2019 08:42:39 +0000 Received: from vegas.theobroma-systems.com ([144.76.126.164] helo=mail.theobroma-systems.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1obm-0003NH-9F; Thu, 07 Mar 2019 08:42:31 +0000 Received: from ip092042140082.rev.nessus.at ([92.42.140.82]:54490 helo=purcell.lan) by mail.theobroma-systems.com with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.80) (envelope-from ) id 1h1obR-000810-Sa; Thu, 07 Mar 2019 09:42:10 +0100 From: Christoph Muellner To: robh+dt@kernel.org, mark.rutland@arm.com, heiko@sntech.de, shawn.lin@rock-chips.com Subject: [PATCH v2 2/4] dt-bindings: phy: Add a new property drive-impedance-ohm for RK's emmc PHY Date: Thu, 7 Mar 2019 09:41:54 +0100 Message-Id: <20190307084159.25236-2-christoph.muellner@theobroma-systems.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190307084159.25236-1-christoph.muellner@theobroma-systems.com> References: <20190307084159.25236-1-christoph.muellner@theobroma-systems.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190307_004230_471967_9665C4D3 X-CRM114-Status: GOOD ( 10.09 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Randy Li , Lin Huang , Viresh Kumar , Brian Norris , Douglas Anderson , Vicente Bergas , Kishon Vijay Abraham I , linux-rockchip@lists.infradead.org, Tony Xie , Klaus Goger , linux-arm-kernel@lists.infradead.org, Enric Balletbo i Serra , Philipp Tomsich , Ezequiel Garcia , linux-kernel@vger.kernel.org, Christoph Muellner MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch documents the new proprty drive-impedance-ohm for Rockchip's eMMC PHY node. Signed-off-by: Christoph Muellner Signed-off-by: Philipp Tomsich --- Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt index e3ea55763b0a..5f5d999dacc3 100644 --- a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt +++ b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt @@ -13,6 +13,9 @@ specified by name: (because most boards can get basic functionality without having access to it), it is strongly suggested. - clocks: Should have a phandle to the card clock exported by the SDHCI driver. + - drive-impedance-ohm: Specifies the drive impedance in Ohm. + Possible values are 33, 40, 50, 66 and 100. + If not set, the default value of 50 will be applied. Example: