From: Janek Kotas <jank@cadence.com>
To: "robh+dt@kernel.org" <robh+dt@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"vinholikatti@gmail.com" <vinholikatti@gmail.com>,
"jejb@linux.vnet.ibm.com" <jejb@linux.vnet.ibm.com>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: [PATCH v4 1/2] dt-bindings: ufs: Add bindings for Cadence UFS
Date: Thu, 20 Sep 2018 13:08:22 +0000 [thread overview]
Message-ID: <9429A347-939A-44C6-BDBE-A892F5BCBD47@global.cadence.com> (raw)
This patch adds a DT binding documentation for
Cadence UFS Host Controller.
Signed-off-by: Jan Kotas <jank@cadence.com>
---
.../devicetree/bindings/ufs/cdns,ufshc.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/ufs/cdns,ufshc.txt
diff --git a/Documentation/devicetree/bindings/ufs/cdns,ufshc.txt b/Documentation/devicetree/bindings/ufs/cdns,ufshc.txt
new file mode 100644
index 0000000..a04a498
--- /dev/null
+++ b/Documentation/devicetree/bindings/ufs/cdns,ufshc.txt
@@ -0,0 +1,31 @@
+* Cadence Universal Flash Storage (UFS) Controller
+
+UFS nodes are defined to describe on-chip UFS host controllers.
+Each UFS controller instance should have its own node.
+Please see the ufshcd-pltfrm.txt for a list of all available properties.
+
+Required properties:
+- compatible : Compatible list, contains the following controller:
+ "cdns,ufshc"
+ complemented with the JEDEC version:
+ "jedec,ufs-2.0"
+
+- reg : Address and length of the UFS register set.
+- interrupts : One interrupt mapping.
+- freq-table-hz : Clock frequency table.
+ See the ufshcd-pltfrm.txt for details.
+- 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. "core_clk" is mandatory.
+ Depending on a type of a PHY,
+ the "phy_clk" clock can also be added, if needed.
+
+Example:
+ ufs@fd030000 {
+ compatible = "cdns,ufshc", "jedec,ufs-2.0";
+ reg = <0xfd030000 0x10000>;
+ interrupts = <0 1 IRQ_TYPE_LEVEL_HIGH>;
+ freq-table-hz = <0 0>, <0 0>;
+ clocks = <&ufs_core_clk>, <&ufs_phy_clk>;
+ clock-names = "core_clk", "phy_clk";
+ };
--
1.9.0
next reply other threads:[~2018-09-20 13:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 13:08 Janek Kotas [this message]
2018-09-25 15:25 ` [PATCH v4 1/2] dt-bindings: ufs: Add bindings for Cadence UFS Rob Herring
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