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      1 /* SPDX-License-Identifier: GPL-2.0+ */
      2 /*
      3  * Texas Instruments Keystone SerDes driver
      4  *
      5  * (C) Copyright 2014
      6  *     Texas Instruments Incorporated, <www.ti.com>
      7  */
      8 
      9 #ifndef __TI_KEYSTONE_SERDES_H__
     10 #define __TI_KEYSTONE_SERDES_H__
     11 
     12 /* SERDES Reference clock */
     13 enum ks2_serdes_clock {
     14 	SERDES_CLOCK_100M,		/* 100 MHz */
     15 	SERDES_CLOCK_122P88M,		/* 122.88 MHz */
     16 	SERDES_CLOCK_125M,		/* 125 MHz */
     17 	SERDES_CLOCK_156P25M,		/* 156.25 MHz */
     18 	SERDES_CLOCK_312P5M,		/* 312.5 MHz */
     19 };
     20 
     21 /* SERDES Lane Baud Rate */
     22 enum ks2_serdes_rate {
     23 	SERDES_RATE_4P9152G,		/* 4.9152 GBaud */
     24 	SERDES_RATE_5G,			/* 5 GBaud */
     25 	SERDES_RATE_6P144G,		/* 6.144 GBaud */
     26 	SERDES_RATE_6P25G,		/* 6.25 GBaud */
     27 	SERDES_RATE_10p3125g,		/* 10.3215 GBaud */
     28 	SERDES_RATE_12p5g,		/* 12.5 GBaud */
     29 };
     30 
     31 /* SERDES Lane Rate Mode */
     32 enum ks2_serdes_rate_mode {
     33 	SERDES_FULL_RATE,
     34 	SERDES_HALF_RATE,
     35 	SERDES_QUARTER_RATE,
     36 };
     37 
     38 /* SERDES PHY TYPE */
     39 enum ks2_serdes_interface {
     40 	SERDES_PHY_SGMII,
     41 	SERDES_PHY_PCSR,		/* XGE SERDES */
     42 };
     43 
     44 struct ks2_serdes {
     45 	enum ks2_serdes_clock clk;
     46 	enum ks2_serdes_rate rate;
     47 	enum ks2_serdes_rate_mode rate_mode;
     48 	enum ks2_serdes_interface intf;
     49 	u32 loopback;
     50 };
     51 
     52 int ks2_serdes_init(u32 base, struct ks2_serdes *serdes, u32 num_lanes);
     53 
     54 #endif /* __TI_KEYSTONE_SERDES_H__ */
     55