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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright 2014 Freescale Semiconductor, Inc.
- */
- #include <common.h>
- #include <asm/arch/fsl_serdes.h>
- #include <asm/arch/immap_ls102xa.h>
- #include <linux/errno.h>
- #include <asm/io.h>
- #include "fsl_ls1_serdes.h"
- #ifdef CONFIG_SYS_FSL_SRDS_1
- static u64 serdes1_prtcl_map;
- #endif
- #ifdef CONFIG_SYS_FSL_SRDS_2
- static u64 serdes2_prtcl_map;
- #endif
- int is_serdes_configured(enum srds_prtcl device)
- {
- u64 ret = 0;
- #ifdef CONFIG_SYS_FSL_SRDS_1
- if (!(serdes1_prtcl_map & (1ULL << NONE)))
- fsl_serdes_init();
- ret |= (1ULL << device) & serdes1_prtcl_map;
- #endif
- #ifdef CONFIG_SYS_FSL_SRDS_2
- if (!(serdes2_prtcl_map & (1ULL << NONE)))
- fsl_serdes_init();
- ret |= (1ULL << device) & serdes2_prtcl_map;
- #endif
- return !!ret;
- }
- int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
- {
- struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
- u32 cfg = in_be32(&gur->rcwsr[4]);
- int i;
- switch (sd) {
- #ifdef CONFIG_SYS_FSL_SRDS_1
- case FSL_SRDS_1:
- cfg &= RCWSR4_SRDS1_PRTCL_MASK;
- cfg >>= RCWSR4_SRDS1_PRTCL_SHIFT;
- break;
- #endif
- #ifdef CONFIG_SYS_FSL_SRDS_2
- case FSL_SRDS_2:
- cfg &= RCWSR4_SRDS2_PRTCL_MASK;
- cfg >>= RCWSR4_SRDS2_PRTCL_SHIFT;
- break;
- #endif
- default:
- printf("invalid SerDes%d\n", sd);
- break;
- }
- /* Is serdes enabled at all? */
- if (unlikely(cfg == 0))
- return -ENODEV;
- for (i = 0; i < SRDS_MAX_LANES; i++) {
- if (serdes_get_prtcl(sd, cfg, i) == device)
- return i;
- }
- return -ENODEV;
- }
- u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
- {
- struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
- u64 serdes_prtcl_map = 0;
- u32 cfg;
- int lane;
- cfg = in_be32(&gur->rcwsr[4]) & sd_prctl_mask;
- cfg >>= sd_prctl_shift;
- printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
- if (!is_serdes_prtcl_valid(sd, cfg))
- printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
- for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
- enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
- serdes_prtcl_map |= (1ULL << lane_prtcl);
- }
- /* Set the first bit to indicate serdes has been initialized */
- serdes_prtcl_map |= (1ULL << NONE);
- return serdes_prtcl_map;
- }
- void fsl_serdes_init(void)
- {
- #ifdef CONFIG_SYS_FSL_SRDS_1
- if (!(serdes1_prtcl_map & (1ULL << NONE)))
- serdes1_prtcl_map = serdes_init(FSL_SRDS_1,
- CONFIG_SYS_FSL_SERDES_ADDR,
- RCWSR4_SRDS1_PRTCL_MASK,
- RCWSR4_SRDS1_PRTCL_SHIFT);
- #endif
- #ifdef CONFIG_SYS_FSL_SRDS_2
- if (!(serdes2_prtcl_map & (1ULL << NONE)))
- serdes2_prtcl_map = serdes_init(FSL_SRDS_2,
- CONFIG_SYS_FSL_SERDES_ADDR +
- FSL_SRDS_2 * 0x1000,
- RCWSR4_SRDS2_PRTCL_MASK,
- RCWSR4_SRDS2_PRTCL_SHIFT);
- #endif
- }
- const char *serdes_clock_to_string(u32 clock)
- {
- switch (clock) {
- case SRDS_PLLCR0_RFCK_SEL_100:
- return "100";
- case SRDS_PLLCR0_RFCK_SEL_125:
- return "125";
- default:
- return "100";
- }
- }
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