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Some lsch3 based SoCs like lx2160a contains three serdes modules. Add support for third serdes protocol in lsch3 Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
547 lines
13 KiB
C
547 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2016-2018 NXP
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* Copyright 2014-2015 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <linux/errno.h>
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#include <asm/arch/fsl_serdes.h>
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#include <asm/arch/soc.h>
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#include <fsl-mc/ldpaa_wriop.h>
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#ifdef CONFIG_SYS_FSL_SRDS_1
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static u8 serdes1_prtcl_map[SERDES_PRCTL_COUNT];
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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static u8 serdes2_prtcl_map[SERDES_PRCTL_COUNT];
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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static u8 serdes3_prtcl_map[SERDES_PRCTL_COUNT];
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#endif
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#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
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int xfi_dpmac[XFI8 + 1];
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int sgmii_dpmac[SGMII16 + 1];
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#endif
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__weak void wriop_init_dpmac_qsgmii(int sd, int lane_prtcl)
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{
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return;
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}
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/*
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*The return value of this func is the serdes protocol used.
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*Typically this function is called number of times depending
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*upon the number of serdes blocks in the Silicon.
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*Zero is used to denote that no serdes was enabled,
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*this is the case when golden RCW was used where DPAA2 bring was
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*intentionally removed to achieve boot to prompt
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*/
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__weak int serdes_get_number(int serdes, int cfg)
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{
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return cfg;
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}
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int is_serdes_configured(enum srds_prtcl device)
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{
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int ret = 0;
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#ifdef CONFIG_SYS_FSL_SRDS_1
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if (!serdes1_prtcl_map[NONE])
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fsl_serdes_init();
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ret |= serdes1_prtcl_map[device];
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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if (!serdes2_prtcl_map[NONE])
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fsl_serdes_init();
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ret |= serdes2_prtcl_map[device];
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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if (!serdes3_prtcl_map[NONE])
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fsl_serdes_init();
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ret |= serdes3_prtcl_map[device];
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#endif
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return !!ret;
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}
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int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 cfg = 0;
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int i;
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switch (sd) {
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#ifdef CONFIG_SYS_FSL_SRDS_1
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case FSL_SRDS_1:
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cfg = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS1_REGSR - 1]);
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cfg &= FSL_CHASSIS3_SRDS1_PRTCL_MASK;
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cfg >>= FSL_CHASSIS3_SRDS1_PRTCL_SHIFT;
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break;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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case FSL_SRDS_2:
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cfg = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS2_REGSR - 1]);
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cfg &= FSL_CHASSIS3_SRDS2_PRTCL_MASK;
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cfg >>= FSL_CHASSIS3_SRDS2_PRTCL_SHIFT;
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break;
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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case NXP_SRDS_3:
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cfg = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS3_REGSR - 1]);
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cfg &= FSL_CHASSIS3_SRDS3_PRTCL_MASK;
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cfg >>= FSL_CHASSIS3_SRDS3_PRTCL_SHIFT;
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break;
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#endif
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default:
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printf("invalid SerDes%d\n", sd);
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break;
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}
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cfg = serdes_get_number(sd, cfg);
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/* Is serdes enabled at all? */
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if (cfg == 0)
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return -ENODEV;
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for (i = 0; i < SRDS_MAX_LANES; i++) {
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if (serdes_get_prtcl(sd, cfg, i) == device)
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return i;
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}
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return -ENODEV;
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}
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void serdes_init(u32 sd, u32 sd_addr, u32 rcwsr, u32 sd_prctl_mask,
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u32 sd_prctl_shift, u8 serdes_prtcl_map[SERDES_PRCTL_COUNT])
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 cfg;
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int lane;
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if (serdes_prtcl_map[NONE])
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return;
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memset(serdes_prtcl_map, 0, sizeof(u8) * SERDES_PRCTL_COUNT);
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cfg = gur_in32(&gur->rcwsr[rcwsr - 1]) & sd_prctl_mask;
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cfg >>= sd_prctl_shift;
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cfg = serdes_get_number(sd, cfg);
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printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
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if (!is_serdes_prtcl_valid(sd, cfg))
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printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
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for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
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enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
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if (unlikely(lane_prtcl >= SERDES_PRCTL_COUNT))
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debug("Unknown SerDes lane protocol %d\n", lane_prtcl);
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else {
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serdes_prtcl_map[lane_prtcl] = 1;
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#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
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switch (lane_prtcl) {
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case QSGMII_A:
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case QSGMII_B:
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case QSGMII_C:
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case QSGMII_D:
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wriop_init_dpmac_qsgmii(sd, (int)lane_prtcl);
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break;
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default:
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if (lane_prtcl >= XFI1 && lane_prtcl <= XFI8)
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wriop_init_dpmac(sd,
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xfi_dpmac[lane_prtcl],
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(int)lane_prtcl);
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if (lane_prtcl >= SGMII1 &&
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lane_prtcl <= SGMII16)
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wriop_init_dpmac(sd, sgmii_dpmac[
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lane_prtcl],
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(int)lane_prtcl);
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break;
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}
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#endif
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}
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}
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/* Set the first element to indicate serdes has been initialized */
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serdes_prtcl_map[NONE] = 1;
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}
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__weak int get_serdes_volt(void)
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{
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return -1;
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}
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__weak int set_serdes_volt(int svdd)
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{
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return -1;
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}
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#define LNAGCR0_RT_RSTB 0x00600000
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#define RSTCTL_RESET_MASK 0x000000E0
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#define RSTCTL_RSTREQ 0x80000000
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#define RSTCTL_RST_DONE 0x40000000
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#define RSTCTL_RSTERR 0x20000000
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#define RSTCTL_SDEN 0x00000020
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#define RSTCTL_SDRST_B 0x00000040
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#define RSTCTL_PLLRST_B 0x00000080
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#define TCALCR_CALRST_B 0x08000000
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struct serdes_prctl_info {
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u32 id;
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u32 mask;
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u32 shift;
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};
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struct serdes_prctl_info srds_prctl_info[] = {
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#ifdef CONFIG_SYS_FSL_SRDS_1
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{.id = 1,
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.mask = FSL_CHASSIS3_SRDS1_PRTCL_MASK,
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.shift = FSL_CHASSIS3_SRDS1_PRTCL_SHIFT
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},
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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{.id = 2,
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.mask = FSL_CHASSIS3_SRDS2_PRTCL_MASK,
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.shift = FSL_CHASSIS3_SRDS2_PRTCL_SHIFT
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},
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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{.id = 3,
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.mask = FSL_CHASSIS3_SRDS3_PRTCL_MASK,
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.shift = FSL_CHASSIS3_SRDS3_PRTCL_SHIFT
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},
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#endif
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{} /* NULL ENTRY */
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};
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static int get_serdes_prctl_info_idx(u32 serdes_id)
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{
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int pos = 0;
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struct serdes_prctl_info *srds_info;
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/* loop until NULL ENTRY defined by .id=0 */
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for (srds_info = srds_prctl_info; srds_info->id != 0;
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srds_info++, pos++) {
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if (srds_info->id == serdes_id)
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return pos;
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}
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return -1;
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}
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static void do_enabled_lanes_reset(u32 serdes_id, u32 cfg,
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struct ccsr_serdes __iomem *serdes_base,
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bool cmplt)
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{
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int i, pos;
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u32 cfg_tmp;
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pos = get_serdes_prctl_info_idx(serdes_id);
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if (pos == -1) {
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printf("invalid serdes_id %d\n", serdes_id);
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return;
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}
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cfg_tmp = cfg & srds_prctl_info[pos].mask;
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cfg_tmp >>= srds_prctl_info[pos].shift;
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for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) {
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if (cmplt)
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setbits_le32(&serdes_base->lane[i].gcr0,
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LNAGCR0_RT_RSTB);
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else
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clrbits_le32(&serdes_base->lane[i].gcr0,
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LNAGCR0_RT_RSTB);
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}
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}
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static void do_pll_reset(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
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clrbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RESET_MASK);
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udelay(1);
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RSTREQ);
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}
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udelay(1);
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}
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static void do_rx_tx_cal_reset(struct ccsr_serdes __iomem *serdes_base)
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{
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clrbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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clrbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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}
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static void do_rx_tx_cal_reset_comp(u32 cfg, int i,
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struct ccsr_serdes __iomem *serdes_base)
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{
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if (!(cfg == 0x3 && i == 1)) {
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udelay(1);
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setbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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setbits_le32(&serdes_base->srdstcalcr, TCALCR_CALRST_B);
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}
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udelay(1);
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}
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static void do_pll_reset_done(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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u32 reg = 0;
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for (i = 0; i < 2; i++) {
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reg = in_le32(&serdes_base->bank[i].pllcr0);
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if (!(cfg & (0x1 << (1 - i))) && ((reg >> 23) & 0x1)) {
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RST_DONE);
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}
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}
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}
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static void do_serdes_enable(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
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setbits_le32(&serdes_base->bank[i].rstctl, RSTCTL_SDEN);
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udelay(1);
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setbits_le32(&serdes_base->bank[i].rstctl, RSTCTL_PLLRST_B);
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udelay(1);
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/* Take the Rx/Tx calibration out of reset */
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do_rx_tx_cal_reset_comp(cfg, i, serdes_base);
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}
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}
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static void do_pll_lock(u32 cfg,
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struct ccsr_serdes __iomem *serdes_base)
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{
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int i;
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u32 reg = 0;
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for (i = 0; i < 2 && !(cfg & (0x1 << (1 - i))); i++) {
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/* if the PLL is not locked, set RST_ERR */
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reg = in_le32(&serdes_base->bank[i].pllcr0);
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if (!((reg >> 23) & 0x1)) {
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_RSTERR);
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} else {
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udelay(1);
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setbits_le32(&serdes_base->bank[i].rstctl,
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RSTCTL_SDRST_B);
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udelay(1);
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}
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}
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}
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int setup_serdes_volt(u32 svdd)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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struct ccsr_serdes __iomem *serdes1_base =
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(void *)CONFIG_SYS_FSL_LSCH3_SERDES_ADDR;
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u32 cfg_rcwsrds1 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS1_REGSR - 1]);
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#ifdef CONFIG_SYS_FSL_SRDS_2
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struct ccsr_serdes __iomem *serdes2_base =
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(void *)(CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + 0x10000);
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u32 cfg_rcwsrds2 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS2_REGSR - 1]);
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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struct ccsr_serdes __iomem *serdes3_base =
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(void *)(CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + 0x20000);
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u32 cfg_rcwsrds3 = gur_in32(&gur->rcwsr[FSL_CHASSIS3_SRDS3_REGSR - 1]);
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#endif
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u32 cfg_tmp;
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int svdd_cur, svdd_tar;
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int ret = 1;
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/* Only support switch SVDD to 900mV */
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if (svdd != 900)
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return -EINVAL;
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/* Scale up to the LTC resolution is 1/4096V */
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svdd = (svdd * 4096) / 1000;
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svdd_tar = svdd;
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svdd_cur = get_serdes_volt();
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if (svdd_cur < 0)
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return -EINVAL;
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debug("%s: current SVDD: %x; target SVDD: %x\n",
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__func__, svdd_cur, svdd_tar);
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if (svdd_cur == svdd_tar)
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return 0;
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/* Put the all enabled lanes in reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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do_enabled_lanes_reset(1, cfg_rcwsrds1, serdes1_base, false);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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do_enabled_lanes_reset(2, cfg_rcwsrds2, serdes2_base, false);
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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do_enabled_lanes_reset(3, cfg_rcwsrds3, serdes3_base, false);
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#endif
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/* Put the all enabled PLL in reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_pll_reset(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_pll_reset(cfg_tmp, serdes2_base);
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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cfg_tmp = cfg_rcwsrds3 & 0x30;
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cfg_tmp >>= 4;
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do_pll_reset(cfg_tmp, serdes3_base);
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#endif
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/* Put the Rx/Tx calibration into reset */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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do_rx_tx_cal_reset(serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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do_rx_tx_cal_reset(serdes2_base);
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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do_rx_tx_cal_reset(serdes3_base);
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#endif
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ret = set_serdes_volt(svdd);
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if (ret < 0) {
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printf("could not change SVDD\n");
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ret = -1;
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}
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/* For each PLL that’s not disabled via RCW enable the SERDES */
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_serdes_enable(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_serdes_enable(cfg_tmp, serdes2_base);
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#endif
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#ifdef CONFIG_SYS_NXP_SRDS_3
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cfg_tmp = cfg_rcwsrds3 & 0x30;
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cfg_tmp >>= 4;
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do_serdes_enable(cfg_tmp, serdes3_base);
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#endif
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/* Wait for at at least 625us, ensure the PLLs being reset are locked */
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udelay(800);
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#ifdef CONFIG_SYS_FSL_SRDS_1
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cfg_tmp = cfg_rcwsrds1 & 0x3;
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do_pll_lock(cfg_tmp, serdes1_base);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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cfg_tmp = cfg_rcwsrds1 & 0xC;
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cfg_tmp >>= 2;
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do_pll_lock(cfg_tmp, serdes2_base);
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#endif
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|
||
#ifdef CONFIG_SYS_NXP_SRDS_3
|
||
cfg_tmp = cfg_rcwsrds3 & 0x30;
|
||
cfg_tmp >>= 4;
|
||
do_pll_lock(cfg_tmp, serdes3_base);
|
||
#endif
|
||
|
||
/* Take the all enabled lanes out of reset */
|
||
#ifdef CONFIG_SYS_FSL_SRDS_1
|
||
do_enabled_lanes_reset(1, cfg_rcwsrds1, serdes1_base, true);
|
||
#endif
|
||
#ifdef CONFIG_SYS_FSL_SRDS_2
|
||
do_enabled_lanes_reset(2, cfg_rcwsrds2, serdes2_base, true);
|
||
#endif
|
||
|
||
#ifdef CONFIG_SYS_NXP_SRDS_3
|
||
do_enabled_lanes_reset(3, cfg_rcwsrds3, serdes3_base, true);
|
||
#endif
|
||
|
||
/* For each PLL being reset, and achieved PLL lock set RST_DONE */
|
||
#ifdef CONFIG_SYS_FSL_SRDS_1
|
||
cfg_tmp = cfg_rcwsrds1 & 0x3;
|
||
do_pll_reset_done(cfg_tmp, serdes1_base);
|
||
#endif
|
||
#ifdef CONFIG_SYS_FSL_SRDS_2
|
||
cfg_tmp = cfg_rcwsrds1 & 0xC;
|
||
cfg_tmp >>= 2;
|
||
do_pll_reset_done(cfg_tmp, serdes2_base);
|
||
#endif
|
||
|
||
#ifdef CONFIG_SYS_NXP_SRDS_3
|
||
cfg_tmp = cfg_rcwsrds3 & 0x30;
|
||
cfg_tmp >>= 4;
|
||
do_pll_reset_done(cfg_tmp, serdes3_base);
|
||
#endif
|
||
|
||
return ret;
|
||
}
|
||
|
||
void fsl_serdes_init(void)
|
||
{
|
||
#if defined(CONFIG_FSL_MC_ENET) && !defined(CONFIG_SPL_BUILD)
|
||
int i , j;
|
||
|
||
for (i = XFI1, j = 1; i <= XFI8; i++, j++)
|
||
xfi_dpmac[i] = j;
|
||
|
||
for (i = SGMII1, j = 1; i <= SGMII16; i++, j++)
|
||
sgmii_dpmac[i] = j;
|
||
#endif
|
||
|
||
#ifdef CONFIG_SYS_FSL_SRDS_1
|
||
serdes_init(FSL_SRDS_1,
|
||
CONFIG_SYS_FSL_LSCH3_SERDES_ADDR,
|
||
FSL_CHASSIS3_SRDS1_REGSR,
|
||
FSL_CHASSIS3_SRDS1_PRTCL_MASK,
|
||
FSL_CHASSIS3_SRDS1_PRTCL_SHIFT,
|
||
serdes1_prtcl_map);
|
||
#endif
|
||
#ifdef CONFIG_SYS_FSL_SRDS_2
|
||
serdes_init(FSL_SRDS_2,
|
||
CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + FSL_SRDS_2 * 0x10000,
|
||
FSL_CHASSIS3_SRDS2_REGSR,
|
||
FSL_CHASSIS3_SRDS2_PRTCL_MASK,
|
||
FSL_CHASSIS3_SRDS2_PRTCL_SHIFT,
|
||
serdes2_prtcl_map);
|
||
#endif
|
||
#ifdef CONFIG_SYS_NXP_SRDS_3
|
||
serdes_init(NXP_SRDS_3,
|
||
CONFIG_SYS_FSL_LSCH3_SERDES_ADDR + NXP_SRDS_3 * 0x10000,
|
||
FSL_CHASSIS3_SRDS3_REGSR,
|
||
FSL_CHASSIS3_SRDS3_PRTCL_MASK,
|
||
FSL_CHASSIS3_SRDS3_PRTCL_SHIFT,
|
||
serdes3_prtcl_map);
|
||
#endif
|
||
}
|