tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1MediaTek Universal Flash Storage (UFS) M-PHY binding
2--------------------------------------------------------
3
4UFS M-PHY nodes are defined to describe on-chip UFS M-PHY hardware macro.
5Each UFS M-PHY node should have its own node.
6
7To bind UFS M-PHY with UFS host controller, the controller node should
8contain a phandle reference to UFS M-PHY node.
9
10Required properties for UFS M-PHY nodes:
11- compatible : Compatible list, contains the following controller:
12 "mediatek,mt8183-ufsphy" for ufs phy
13 persent on MT81xx chipsets.
14- reg : Address and length of the UFS M-PHY register set.
15- #phy-cells : This property shall be set to 0.
16- clocks : List of phandle and clock specifier pairs.
17- clock-names : List of clock input name strings sorted in the same
18 order as the clocks property. Following clocks are
19 mandatory.
20 "unipro": Unipro core control clock.
21 "mp": M-PHY core control clock.
22
23Example:
24
25 ufsphy: phy@11fa0000 {
26 compatible = "mediatek,mt8183-ufsphy";
27 reg = <0 0x11fa0000 0 0xc000>;
28 #phy-cells = <0>;
29
30 clocks = <&infracfg_ao INFRACFG_AO_UNIPRO_SCK_CG>,
31 <&infracfg_ao INFRACFG_AO_UFS_MP_SAP_BCLK_CG>;
32 clock-names = "unipro", "mp";
33 };
34
35 ufshci@11270000 {
36 ...
37 phys = <&ufsphy>;
38 };