From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanley Chu Subject: [PATCH v6 5/7] dt-bindings: scsi: ufs: Add document for ufs-mediatek Date: Sat, 16 Mar 2019 13:04:45 +0800 Message-ID: <1552712687-20186-7-git-send-email-stanley.chu@mediatek.com> References: <1552712687-20186-1-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: <1552712687-20186-1-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, yingjoe.chen-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 and UFS PHY node document for Mediatek SoC chips. Signed-off-by: Stanley Chu Reviewed-by: Rob Herring --- .../devicetree/bindings/ufs/ufs-mediatek.txt | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/devicetree/bindings/ufs/ufs-mediatek.txt diff --git a/Documentation/devicetree/bindings/ufs/ufs-mediatek.txt b/Documentation/devicetree/bindings/ufs/ufs-mediatek.txt new file mode 100644 index 000000000000..e25c007b95d7 --- /dev/null +++ b/Documentation/devicetree/bindings/ufs/ufs-mediatek.txt @@ -0,0 +1,40 @@ +* Mediatek Universal Flash Storage (UFS) Host Controller + +UFS nodes are defined to describe on-chip UFS hardware macro. +Each UFS Host Controller should have its own node. + +To bind UFS PHY with UFS host controller, the controller node should +contain a phandle reference to UFS M-PHY node. + +Required properties for UFS nodes: +- compatible : Compatible list, contains the following controller: + "mediatek,mt8183-ufshci" for MediaTek UFS host controller + present on MT81xx chipsets. +- reg : Address and length of the UFS register set. +- phys : phandle to m-phy. +- 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. "ufs" is mandatory. + "ufs": ufshci core control clock. +- freq-table-hz : Array of operating frequencies stored in the same + order as the clocks property. If this property is not + defined or a value in the array is "0" then it is assumed + that the frequency is set by the parent clock or a + fixed rate clock source. + +Example: + + ufsphy: phy@11fa0000 { + ... + }; + + ufshci@11270000 { + compatible = "mediatek,mt8183-ufshci"; + reg = <0 0x11270000 0 0x2300>; + interrupts = ; + phys = <&ufsphy>; + + clocks = <&infracfg_ao INFRACFG_AO_UFS_CG>; + clock-names = "ufs"; + freq-table-hz = <0 0>; + }; -- 2.18.0