diff options
| author | Bu Tao <butao@hisilicon.com> | 2017-06-16 14:51:16 +0800 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2018-04-10 14:25:42 -0700 |
| commit | 93da570922bbd45dcfd17851e1f56fb05b6cb88e (patch) | |
| tree | 8f46fe0e7196236a55465d0bda2af1ea39d9e5a2 /Documentation | |
| parent | 1b0f2779bb7e4c235ed5fb4a23c41f78e71583e8 (diff) | |
dt-bindings: scsi: ufs: add document for hi3660-ufs
add ufs node document for hi3660
Signed-off-by: Bu Tao <butao@hisilicon.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/ufs/hi3660-ufs.txt | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ufs/hi3660-ufs.txt b/Documentation/devicetree/bindings/ufs/hi3660-ufs.txt new file mode 100644 index 000000000000..461afc8ef017 --- /dev/null +++ b/Documentation/devicetree/bindings/ufs/hi3660-ufs.txt @@ -0,0 +1,58 @@ +* Hisilicon 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. + +Required properties: +- compatible : compatible list, contains one of the following - + "hisilicon,hi3660-ufs" for hisi ufs host controller + present on Hi3660 chipset. +- reg : should contain UFS register address space & UFS SYS CTRL register address, +- interrupt-parent : interrupt device +- interrupts : interrupt number +- 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. "clk_ref", "clk_phy" is optional +- resets : reset node register, one reset the clk and the other reset the controller +- reset-names : describe reset node register + +Optional properties for board device: +- ufs-hi3660-use-rate-B : specifies UFS rate-B +- ufs-hi3660-broken-fastauto : specifies no fastauto +- ufs-hi3660-use-HS-GEAR3 : specifies UFS HS-GEAR3 +- ufs-hi3660-use-HS-GEAR2 : specifies UFS HS-GEAR2 +- ufs-hi3660-use-HS-GEAR1 : specifies UFS HS-GEAR1 +- ufs-hi3660-broken-clk-gate-bypass : specifies no clk-gate +- ufs-hi3660-use-one-line : specifies UFS use one line work +- reset-gpio : specifies to reset devices + +Example: + + ufs: ufs@ff3b0000 { + compatible = "jedec,ufs-1.1", "hisilicon,hi3660-ufs"; + /* 0: HCI standard */ + /* 1: UFS SYS CTRL */ + reg = <0x0 0xff3b0000 0x0 0x1000>, + <0x0 0xff3b1000 0x0 0x1000>; + interrupt-parent = <&gic>; + interrupts = <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&crg_ctrl HI3660_CLK_GATE_UFSIO_REF>, + <&crg_ctrl HI3660_CLK_GATE_UFSPHY_CFG>; + clock-names = "clk_ref", "clk_phy"; + freq-table-hz = <0 0>, <0 0>; + /* offset: 0x84; bit: 12 */ + /* offset: 0x84; bit: 7 */ + resets = <&crg_rst 0x84 12>, + <&crg_rst 0x84 7>; + reset-names = "rst", "assert"; + } + + &ufs { + ufs-hi3660-use-rate-B; + ufs-hi3660-broken-fastauto; + ufs-hi3660-use-HS-GEAR3; + ufs-hi3660-broken-clk-gate-bypass; + reset-gpio = <&gpio18 1 0>; + status = "okay"; + } + |