From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanley Chu Subject: [PATCH v3 4/7] dt-bindings: phy: Add document for phy-mtk-ufs Date: Wed, 27 Feb 2019 15:23:09 +0800 Message-ID: <1551252192-535-6-git-send-email-stanley.chu@mediatek.com> References: <1551252192-535-1-git-send-email-stanley.chu@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1551252192-535-1-git-send-email-stanley.chu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+glpam-linux-mediatek=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, chunfeng.yun-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, kishon-l0cyMroinI0@public.gmane.org, martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, avri.altman-Sjgp3cTcYWE@public.gmane.org, alim.akhtar-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, pedrom.sousa-HKixBCOQz3hWk0Htik3J/w@public.gmane.org Cc: chun-hung.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, kuohong.wang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, liwei213-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, subhashj-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, Stanley Chu , peter.wang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org List-Id: devicetree@vger.kernel.org Add UFS M-PHY node document for MediaTek SoC chips. Signed-off-by: Stanley Chu --- .../devicetree/bindings/phy/phy-mtk-ufs.txt | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-mtk-ufs.txt diff --git a/Documentation/devicetree/bindings/phy/phy-mtk-ufs.txt b/Documentation/devicetree/bindings/phy/phy-mtk-ufs.txt new file mode 100644 index 000000000000..5fc22c7fe0bc --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-mtk-ufs.txt @@ -0,0 +1,35 @@ +MediaTek Universal Flash Storage (UFS) M-PHY binding +-------------------------------------------------------- + +UFS M-PHY nodes are defined to describe on-chip UFS M-PHY hardware macro. +Each UFS M-PHY node should have its own node. + +To bind UFS M-PHY with UFS host controller, the controller node should +contain a phandle reference to UFS M-PHY node. + +Required properties for UFS M-PHY nodes: +- compatible : Compatible list, contains the following controller: + "mediatek,ufs-mphy" +- reg : Address and length of the UFS M-PHY register set. +- #phy-cells : This property shall be set to 0 +- clocks : List of phandle and clock specifier pairs. +- clock-names : List of clock input name strings sorted in the same + order as the clocks property. "unipro-clk" and + "mp-clk" are mandatory. + +Example: + + ufs_mphy: ufs_mphy@11fa0000 { + compatible = "mediatek,ufs-mphy"; + reg = <0 0x11fa0000 0 0xc000>; + #phy-cells = <0>; + + clocks = <&infracfg_ao INFRACFG_AO_UNIPRO_SCK_CG>, + <&infracfg_ao INFRACFG_AO_UFS_MP_SAP_BCLK_CG>; + clock-names = "unipro-clk", "mp-clk"; + }; + + ufshci:ufshci@11270000 { + ... + phys = <&ufs_mphy>; + }; -- 2.18.0