src/arm/st/st-pincfg.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ST_PINCFG_H_
   3 #define _ST_PINCFG_H_
   4
   5 /* Alternate functions */
   6 #define ALT1    1
   7 #define ALT2    2
   8 #define ALT3    3
   9 #define ALT4    4
  10 #define ALT5    5
  11 #define ALT6    6
  12 #define ALT7    7
  13
  14 /* Output enable */
  15 #define OE                      (1 << 27)
  16 /* Pull Up */
  17 #define PU                      (1 << 26)
  18 /* Open Drain */
  19 #define OD                      (1 << 25)
  20 #define RT                      (1 << 23)
  21 #define INVERTCLK               (1 << 22)
  22 #define CLKNOTDATA              (1 << 21)
  23 #define DOUBLE_EDGE             (1 << 20)
  24 #define CLK_A                   (0 << 18)
  25 #define CLK_B                   (1 << 18)
  26 #define CLK_C                   (2 << 18)
  27 #define CLK_D                   (3 << 18)
  28
  29 /* User-frendly defines for Pin Direction */
  30                 /* oe = 0, pu = 0, od = 0 */
  31 #define IN                      (0)
  32                 /* oe = 0, pu = 1, od = 0 */
  33 #define IN_PU                   (PU)
  34                 /* oe = 1, pu = 0, od = 0 */
  35 #define OUT                     (OE)
  36                 /* oe = 1, pu = 0, od = 1 */
  37 #define BIDIR                   (OE | OD)
  38                 /* oe = 1, pu = 1, od = 1 */
  39 #define BIDIR_PU                (OE | PU | OD)
  40
  41 /* RETIME_TYPE */
  42 /*
  43  * B Mode
  44  * Bypass retime with optional delay parameter
  45  */
  46 #define BYPASS          (0)
  47 /*
  48  * R0, R1, R0D, R1D modes
  49  * single-edge data non inverted clock, retime data with clk
  50  */
  51 #define SE_NICLK_IO     (RT)
  52 /*
  53  * RIV0, RIV1, RIV0D, RIV1D modes
  54  * single-edge data inverted clock, retime data with clk
  55  */
  56 #define SE_ICLK_IO      (RT | INVERTCLK)
  57 /*
  58  * R0E, R1E, R0ED, R1ED modes
  59  * double-edge data, retime data with clk
  60  */
  61 #define DE_IO           (RT | DOUBLE_EDGE)
  62 /*
  63  * CIV0, CIV1 modes with inverted clock
  64  * Retiming the clk pins will park clock & reduce the noise within the core.
  65  */
  66 #define ICLK            (RT | CLKNOTDATA | INVERTCLK)
  67 /*
  68  * CLK0, CLK1 modes with non-inverted clock
  69  * Retiming the clk pins will park clock & reduce the noise within the core.
  70  */
  71 #define NICLK           (RT | CLKNOTDATA)
  72 #endif /* _ST_PINCFG_H_ */