xref: /freebsd/sys/contrib/device-tree/Bindings/ufs/cdns,ufshc.txt (revision 2e3507c25e42292b45a5482e116d278f5515d04d)
1* Cadence Universal Flash Storage (UFS) Controller
2
3UFS nodes are defined to describe on-chip UFS host controllers.
4Each UFS controller instance should have its own node.
5Please see the ufshcd-pltfrm.txt for a list of all available properties.
6
7Required properties:
8- compatible	: Compatible list, contains one of the following controllers:
9			"cdns,ufshc" - Generic CDNS HCI,
10			"cdns,ufshc-m31-16nm" - CDNS UFS HC + M31 16nm PHY
11		  complemented with the JEDEC version:
12			"jedec,ufs-2.0"
13
14- reg		: Address and length of the UFS register set.
15- interrupts	: One interrupt mapping.
16- freq-table-hz	: Clock frequency table.
17		  See the ufshcd-pltfrm.txt for details.
18- clocks	: List of phandle and clock specifier pairs.
19- clock-names	: List of clock input name strings sorted in the same
20		  order as the clocks property. "core_clk" is mandatory.
21		  Depending on a type of a PHY,
22		  the "phy_clk" clock can also be added, if needed.
23
24Example:
25	ufs@fd030000 {
26		compatible = "cdns,ufshc", "jedec,ufs-2.0";
27		reg = <0xfd030000 0x10000>;
28		interrupts = <0 1 IRQ_TYPE_LEVEL_HIGH>;
29		freq-table-hz = <0 0>, <0 0>;
30		clocks = <&ufs_core_clk>, <&ufs_phy_clk>;
31		clock-names = "core_clk", "phy_clk";
32	};
33