2 * Copyright 2015 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <linux/errno.h>
10 #include <asm/arch/fsl_serdes.h>
11 #include <asm/arch/soc.h>
13 #ifdef CONFIG_SYS_FSL_SRDS_1
14 static u8 serdes1_prtcl_map[SERDES_PRCTL_COUNT];
16 #ifdef CONFIG_SYS_FSL_SRDS_2
17 static u8 serdes2_prtcl_map[SERDES_PRCTL_COUNT];
20 int is_serdes_configured(enum srds_prtcl device)
24 #ifdef CONFIG_SYS_FSL_SRDS_1
25 if (!serdes1_prtcl_map[NONE])
28 ret |= serdes1_prtcl_map[device];
30 #ifdef CONFIG_SYS_FSL_SRDS_2
31 if (!serdes2_prtcl_map[NONE])
34 ret |= serdes2_prtcl_map[device];
40 int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
42 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
43 u32 cfg = gur_in32(&gur->rcwsr[4]);
47 #ifdef CONFIG_SYS_FSL_SRDS_1
49 cfg &= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
50 cfg >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
53 #ifdef CONFIG_SYS_FSL_SRDS_2
55 cfg &= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK;
56 cfg >>= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT;
60 printf("invalid SerDes%d\n", sd);
64 /* Is serdes enabled at all? */
65 if (unlikely(cfg == 0))
68 for (i = 0; i < SRDS_MAX_LANES; i++) {
69 if (serdes_get_prtcl(sd, cfg, i) == device)
76 int get_serdes_protocol(void)
78 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
79 u32 cfg = gur_in32(&gur->rcwsr[4]) &
80 FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
81 cfg >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
86 const char *serdes_clock_to_string(u32 clock)
89 case SRDS_PLLCR0_RFCK_SEL_100:
91 case SRDS_PLLCR0_RFCK_SEL_125:
93 case SRDS_PLLCR0_RFCK_SEL_156_25:
100 void serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift,
101 u8 serdes_prtcl_map[SERDES_PRCTL_COUNT])
103 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
107 if (serdes_prtcl_map[NONE])
110 memset(serdes_prtcl_map, 0, sizeof(u8) * SERDES_PRCTL_COUNT);
112 cfg = gur_in32(&gur->rcwsr[4]) & sd_prctl_mask;
113 cfg >>= sd_prctl_shift;
114 printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
116 if (!is_serdes_prtcl_valid(sd, cfg))
117 printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
119 for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
120 enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
122 if (unlikely(lane_prtcl >= SERDES_PRCTL_COUNT))
123 debug("Unknown SerDes lane protocol %d\n", lane_prtcl);
125 serdes_prtcl_map[lane_prtcl] = 1;
128 /* Set the first element to indicate serdes has been initialized */
129 serdes_prtcl_map[NONE] = 1;
132 void fsl_serdes_init(void)
134 #ifdef CONFIG_SYS_FSL_SRDS_1
135 serdes_init(FSL_SRDS_1,
136 CONFIG_SYS_FSL_SERDES_ADDR,
137 FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK,
138 FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT,
141 #ifdef CONFIG_SYS_FSL_SRDS_2
142 serdes_init(FSL_SRDS_2,
143 CONFIG_SYS_FSL_SERDES_ADDR,
144 FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK,
145 FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT,