tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1* Hisilicon Universal Flash Storage (UFS) Host Controller
2
3UFS nodes are defined to describe on-chip UFS hardware macro.
4Each UFS Host Controller should have its own node.
5
6Required properties:
7- compatible : compatible list, contains one of the following -
8 "hisilicon,hi3660-ufs", "jedec,ufs-1.1" for hisi ufs
9 host controller present on Hi3660 chipset.
10 "hisilicon,hi3670-ufs", "jedec,ufs-2.1" for hisi ufs
11 host controller present on Hi3670 chipset.
12- reg : should contain UFS register address space & UFS SYS CTRL register address,
13- interrupts : interrupt number
14- clocks : List of phandle and clock specifier pairs
15- clock-names : List of clock input name strings sorted in the same
16 order as the clocks property. "ref_clk", "phy_clk" is optional
17- freq-table-hz : Array of <min max> operating frequencies stored in the same
18 order as the clocks property. If this property is not
19 defined or a value in the array is "0" then it is assumed
20 that the frequency is set by the parent clock or a
21 fixed rate clock source.
22- resets : describe reset node register
23- reset-names : reset node register, the "rst" corresponds to reset the whole UFS IP.
24
25Example:
26
27 ufs: ufs@ff3b0000 {
28 compatible = "hisilicon,hi3660-ufs", "jedec,ufs-1.1";
29 /* 0: HCI standard */
30 /* 1: UFS SYS CTRL */
31 reg = <0x0 0xff3b0000 0x0 0x1000>,
32 <0x0 0xff3b1000 0x0 0x1000>;
33 interrupt-parent = <&gic>;
34 interrupts = <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>;
35 clocks = <&crg_ctrl HI3660_CLK_GATE_UFSIO_REF>,
36 <&crg_ctrl HI3660_CLK_GATE_UFSPHY_CFG>;
37 clock-names = "ref_clk", "phy_clk";
38 freq-table-hz = <0 0>, <0 0>;
39 /* offset: 0x84; bit: 12 */
40 resets = <&crg_rst 0x84 12>;
41 reset-names = "rst";
42 };