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Mon, 23 Mar 2020 15:00:35 -0700 (PDT) Received: from rob-hp-laptop ([64.188.179.250]) by smtp.gmail.com with ESMTPSA id m18sm5620099ila.54.2020.03.23.15.00.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2020 15:00:35 -0700 (PDT) Received: (nullmailer pid 10516 invoked by uid 1000); Mon, 23 Mar 2020 22:00:33 -0000 Date: Mon, 23 Mar 2020 16:00:33 -0600 From: Rob Herring To: Jitao Shi Subject: Re: [PATCH v3 1/4] dt-bindings: display: mediatek: add property to control mipi tx drive current Message-ID: <20200323220033.GA29463@bogus> References: <20200311074032.119481-1-jitao.shi@mediatek.com> <20200311074032.119481-2-jitao.shi@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200311074032.119481-2-jitao.shi@mediatek.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200323_150036_900020_61ACF797 X-CRM114-Status: GOOD ( 12.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, bibby.hsieh@mediatek.com, srv_heupstream@mediatek.com, David Airlie , huijuan.xie@mediatek.com, stonea168@163.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, cawa.cheng@mediatek.com, ck.hu@mediatek.com, linux-mediatek@lists.infradead.org, Daniel Vetter , Matthias Brugger , yingjoe.chen@mediatek.com, eddie.huang@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Mar 11, 2020 at 03:40:29PM +0800, Jitao Shi wrote: > Add a property to control mipi tx drive current: > "drive-strength-microamp" > > Signed-off-by: Jitao Shi > --- > .../devicetree/bindings/display/mediatek/mediatek,dsi.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt > index a19a6cc375ed..d501f9ff4b1f 100644 > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt > @@ -33,6 +33,9 @@ Required properties: > - #clock-cells: must be <0>; > - #phy-cells: must be <0>. > > +Optional properties: > +- drive-strength-microamp: adjust driving current, should be 1 ~ 0xF TBC, 1-0xf is in units of microamps? So a max drive strength of 15uA? Seems a bit low. > + > Example: > > mipi_tx0: mipi-dphy@10215000 { > @@ -42,6 +45,7 @@ mipi_tx0: mipi-dphy@10215000 { > clock-output-names = "mipi_tx0_pll"; > #clock-cells = <0>; > #phy-cells = <0>; > + drive-strength-microamp = <0x8>; > }; > > dsi0: dsi@1401b000 { > -- > 2.21.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel