xref: /openbmc/u-boot/arch/arm/dts/st-pincfg.h (revision 51cb23d45263eb0c0dd7e8e22e9a6e10c8b81f3e)
1*51cb23d4SPatrice Chotard #ifndef _ST_PINCFG_H_
2*51cb23d4SPatrice Chotard #define _ST_PINCFG_H_
3*51cb23d4SPatrice Chotard 
4*51cb23d4SPatrice Chotard /* Alternate functions */
5*51cb23d4SPatrice Chotard #define ALT1	1
6*51cb23d4SPatrice Chotard #define ALT2	2
7*51cb23d4SPatrice Chotard #define ALT3	3
8*51cb23d4SPatrice Chotard #define ALT4	4
9*51cb23d4SPatrice Chotard #define ALT5	5
10*51cb23d4SPatrice Chotard #define ALT6	6
11*51cb23d4SPatrice Chotard #define ALT7	7
12*51cb23d4SPatrice Chotard 
13*51cb23d4SPatrice Chotard /* Output enable */
14*51cb23d4SPatrice Chotard #define OE			(1 << 27)
15*51cb23d4SPatrice Chotard /* Pull Up */
16*51cb23d4SPatrice Chotard #define PU			(1 << 26)
17*51cb23d4SPatrice Chotard /* Open Drain */
18*51cb23d4SPatrice Chotard #define OD			(1 << 25)
19*51cb23d4SPatrice Chotard #define RT			(1 << 23)
20*51cb23d4SPatrice Chotard #define INVERTCLK		(1 << 22)
21*51cb23d4SPatrice Chotard #define CLKNOTDATA		(1 << 21)
22*51cb23d4SPatrice Chotard #define DOUBLE_EDGE		(1 << 20)
23*51cb23d4SPatrice Chotard #define CLK_A			(0 << 18)
24*51cb23d4SPatrice Chotard #define CLK_B			(1 << 18)
25*51cb23d4SPatrice Chotard #define CLK_C			(2 << 18)
26*51cb23d4SPatrice Chotard #define CLK_D			(3 << 18)
27*51cb23d4SPatrice Chotard 
28*51cb23d4SPatrice Chotard /* User-frendly defines for Pin Direction */
29*51cb23d4SPatrice Chotard 		/* oe = 0, pu = 0, od = 0 */
30*51cb23d4SPatrice Chotard #define IN			(0)
31*51cb23d4SPatrice Chotard 		/* oe = 0, pu = 1, od = 0 */
32*51cb23d4SPatrice Chotard #define IN_PU			(PU)
33*51cb23d4SPatrice Chotard 		/* oe = 1, pu = 0, od = 0 */
34*51cb23d4SPatrice Chotard #define OUT			(OE)
35*51cb23d4SPatrice Chotard 		/* oe = 1, pu = 0, od = 1 */
36*51cb23d4SPatrice Chotard #define BIDIR			(OE | OD)
37*51cb23d4SPatrice Chotard 		/* oe = 1, pu = 1, od = 1 */
38*51cb23d4SPatrice Chotard #define BIDIR_PU		(OE | PU | OD)
39*51cb23d4SPatrice Chotard 
40*51cb23d4SPatrice Chotard /* RETIME_TYPE */
41*51cb23d4SPatrice Chotard /*
42*51cb23d4SPatrice Chotard  * B Mode
43*51cb23d4SPatrice Chotard  * Bypass retime with optional delay parameter
44*51cb23d4SPatrice Chotard  */
45*51cb23d4SPatrice Chotard #define BYPASS		(0)
46*51cb23d4SPatrice Chotard /*
47*51cb23d4SPatrice Chotard  * R0, R1, R0D, R1D modes
48*51cb23d4SPatrice Chotard  * single-edge data non inverted clock, retime data with clk
49*51cb23d4SPatrice Chotard  */
50*51cb23d4SPatrice Chotard #define SE_NICLK_IO	(RT)
51*51cb23d4SPatrice Chotard /*
52*51cb23d4SPatrice Chotard  * RIV0, RIV1, RIV0D, RIV1D modes
53*51cb23d4SPatrice Chotard  * single-edge data inverted clock, retime data with clk
54*51cb23d4SPatrice Chotard  */
55*51cb23d4SPatrice Chotard #define SE_ICLK_IO	(RT | INVERTCLK)
56*51cb23d4SPatrice Chotard /*
57*51cb23d4SPatrice Chotard  * R0E, R1E, R0ED, R1ED modes
58*51cb23d4SPatrice Chotard  * double-edge data, retime data with clk
59*51cb23d4SPatrice Chotard  */
60*51cb23d4SPatrice Chotard #define DE_IO		(RT | DOUBLE_EDGE)
61*51cb23d4SPatrice Chotard /*
62*51cb23d4SPatrice Chotard  * CIV0, CIV1 modes with inverted clock
63*51cb23d4SPatrice Chotard  * Retiming the clk pins will park clock & reduce the noise within the core.
64*51cb23d4SPatrice Chotard  */
65*51cb23d4SPatrice Chotard #define ICLK		(RT | CLKNOTDATA | INVERTCLK)
66*51cb23d4SPatrice Chotard /*
67*51cb23d4SPatrice Chotard  * CLK0, CLK1 modes with non-inverted clock
68*51cb23d4SPatrice Chotard  * Retiming the clk pins will park clock & reduce the noise within the core.
69*51cb23d4SPatrice Chotard  */
70*51cb23d4SPatrice Chotard #define NICLK		(RT | CLKNOTDATA)
71*51cb23d4SPatrice Chotard #endif /* _ST_PINCFG_H_ */
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