1Binding for CEVA AHCI SATA Controller
2
3Required properties:
4  - reg: Physical base address and size of the controller's register area.
5  - compatible: Compatibility string. Must be 'ceva,ahci-1v84'.
6  - clocks: Input clock specifier. Refer to common clock bindings.
7  - interrupts: Interrupt specifier. Refer to interrupt binding.
8  - ceva,p0-cominit-params: OOB timing value for COMINIT parameter for port 0.
9  - ceva,p1-cominit-params: OOB timing value for COMINIT parameter for port 1.
10			The fields for the above parameter must be as shown below:
11			ceva,pN-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>;
12			CINMP : COMINIT Negate Minimum Period.
13			CIBGN : COMINIT Burst Gap Nominal.
14			CIBGMX: COMINIT Burst Gap Maximum.
15			CIBGMN: COMINIT Burst Gap Minimum.
16  - ceva,p0-comwake-params: OOB timing value for COMWAKE parameter for port 0.
17  - ceva,p1-comwake-params: OOB timing value for COMWAKE parameter for port 1.
18			The fields for the above parameter must be as shown below:
19			ceva,pN-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>;
20			CWBGMN: COMWAKE Burst Gap Minimum.
21			CWBGMX: COMWAKE Burst Gap Maximum.
22			CWBGN: COMWAKE Burst Gap Nominal.
23			CWNMP: COMWAKE Negate Minimum Period.
24  - ceva,p0-burst-params: Burst timing value for COM parameter for port 0.
25  - ceva,p1-burst-params: Burst timing value for COM parameter for port 1.
26			The fields for the above parameter must be as shown below:
27			ceva,pN-burst-params = /bits/ 8 <BMX BNM SFD PTST>;
28			BMX: COM Burst Maximum.
29			BNM: COM Burst Nominal.
30			SFD: Signal Failure Detection value.
31			PTST: Partial to Slumber timer value.
32  - ceva,p0-retry-params: Retry interval timing value for port 0.
33  - ceva,p1-retry-params: Retry interval timing value for port 1.
34			The fields for the above parameter must be as shown below:
35			ceva,pN-retry-params = /bits/ 16 <RIT RCT>;
36			RIT:  Retry Interval Timer.
37			RCT:  Rate Change Timer.
38
39Optional properties:
40  - ceva,broken-gen2: limit to gen1 speed instead of gen2.
41
42Examples:
43	ahci@fd0c0000 {
44		compatible = "ceva,ahci-1v84";
45		reg = <0xfd0c0000 0x200>;
46		interrupt-parent = <&gic>;
47		interrupts = <0 133 4>;
48		clocks = <&clkc SATA_CLK_ID>;
49		ceva,p0-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
50		ceva,p0-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
51		ceva,p0-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
52		ceva,p0-retry-params = /bits/ 16 <0x0216 0x7F06>;
53
54		ceva,p1-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
55		ceva,p1-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
56		ceva,p1-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
57		ceva,p1-retry-params = /bits/ 16 <0x0216 0x7F06>;
58		ceva,broken-gen2;
59	};
60