1 // SPDX-License-Identifier: GPL-2.0+
3  * TI serdes driver for keystone2.
11 #include <asm/ti-common/keystone_serdes.h>
42 	enum ks2_serdes_clock clk;  member
49 /* SERDES PHY lane enable configuration value, indexed by PHY interface */
55 /* SERDES PHY PLL enable configuration value, indexed by PHY interface  */
62  * Array to hold all possible serdes configurations.
67 		.clk = SERDES_CLOCK_156P25M,
130 	ks2_serdes_cfg_setup(base, cfg->cmu, SERDES_CMU_CFG_NUM);  in ks2_serdes_init_cfg()
131 	ks2_serdes_cfg_setup(base, cfg->comlane, SERDES_COMLANE_CFG_NUM);  in ks2_serdes_init_cfg()
134 		ks2_serdes_lane_config(base, cfg->lane, SERDES_LANE_CFG_NUM, i);  in ks2_serdes_init_cfg()
139 static void ks2_serdes_cmu_comlane_enable(u32 base, struct ks2_serdes *serdes)  in ks2_serdes_cmu_comlane_enable()  argument
141 	/* Bring SerDes out of Reset */  in ks2_serdes_cmu_comlane_enable()
143 	if (serdes->intf == SERDES_PHY_PCSR)  in ks2_serdes_cmu_comlane_enable()
148 	if (serdes->intf == SERDES_PHY_PCSR)  in ks2_serdes_cmu_comlane_enable()
154 static void ks2_serdes_pll_enable(u32 base, struct ks2_serdes *serdes)  in ks2_serdes_pll_enable()  argument
156 	writel(serdes_cfg_pll_enable[serdes->intf],  in ks2_serdes_pll_enable()
171 				   struct ks2_serdes *serdes, u32 lane)  in ks2_serdes_lane_enable()  argument
176 	writel(SERDES_LANE_EN_VAL(serdes_cfg_lane_enable, serdes->intf,  in ks2_serdes_lane_enable()
177 				  serdes->rate_mode),  in ks2_serdes_lane_enable()
181 	if (serdes->loopback)  in ks2_serdes_lane_enable()
186 int ks2_serdes_init(u32 base, struct ks2_serdes *serdes, u32 num_lanes)  in ks2_serdes_init()  argument
192 		if (serdes->clk == cfgs[i].clk && serdes->rate == cfgs[i].rate)  in ks2_serdes_init()
196 		puts("Cannot find keystone SerDes configuration");  in ks2_serdes_init()
197 		return -EINVAL;  in ks2_serdes_init()
202 	ks2_serdes_cmu_comlane_enable(base, serdes);  in ks2_serdes_init()
204 		ks2_serdes_lane_enable(base, serdes, i);  in ks2_serdes_init()
206 	ks2_serdes_pll_enable(base, serdes);  in ks2_serdes_init()