mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-10 23:03:29 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
131 lines
2.8 KiB
C
131 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2014 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <asm/arch/fsl_serdes.h>
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#include <asm/arch/immap_ls102xa.h>
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#include <linux/errno.h>
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#include <asm/io.h>
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#include "fsl_ls1_serdes.h"
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#ifdef CONFIG_SYS_FSL_SRDS_1
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static u64 serdes1_prtcl_map;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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static u64 serdes2_prtcl_map;
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#endif
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int is_serdes_configured(enum srds_prtcl device)
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{
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u64 ret = 0;
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#ifdef CONFIG_SYS_FSL_SRDS_1
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if (!(serdes1_prtcl_map & (1ULL << NONE)))
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fsl_serdes_init();
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ret |= (1ULL << device) & serdes1_prtcl_map;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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if (!(serdes2_prtcl_map & (1ULL << NONE)))
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fsl_serdes_init();
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ret |= (1ULL << device) & serdes2_prtcl_map;
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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 = in_be32(&gur->rcwsr[4]);
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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 &= RCWSR4_SRDS1_PRTCL_MASK;
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cfg >>= RCWSR4_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 &= RCWSR4_SRDS2_PRTCL_MASK;
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cfg >>= RCWSR4_SRDS2_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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/* Is serdes enabled at all? */
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if (unlikely(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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u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u64 serdes_prtcl_map = 0;
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u32 cfg;
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int lane;
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cfg = in_be32(&gur->rcwsr[4]) & sd_prctl_mask;
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cfg >>= sd_prctl_shift;
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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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serdes_prtcl_map |= (1ULL << lane_prtcl);
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}
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/* Set the first bit to indicate serdes has been initialized */
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serdes_prtcl_map |= (1ULL << NONE);
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return serdes_prtcl_map;
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}
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void fsl_serdes_init(void)
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{
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#ifdef CONFIG_SYS_FSL_SRDS_1
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if (!(serdes1_prtcl_map & (1ULL << NONE)))
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serdes1_prtcl_map = serdes_init(FSL_SRDS_1,
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CONFIG_SYS_FSL_SERDES_ADDR,
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RCWSR4_SRDS1_PRTCL_MASK,
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RCWSR4_SRDS1_PRTCL_SHIFT);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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if (!(serdes2_prtcl_map & (1ULL << NONE)))
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serdes2_prtcl_map = serdes_init(FSL_SRDS_2,
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CONFIG_SYS_FSL_SERDES_ADDR +
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FSL_SRDS_2 * 0x1000,
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RCWSR4_SRDS2_PRTCL_MASK,
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RCWSR4_SRDS2_PRTCL_SHIFT);
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#endif
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}
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const char *serdes_clock_to_string(u32 clock)
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{
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switch (clock) {
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case SRDS_PLLCR0_RFCK_SEL_100:
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return "100";
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case SRDS_PLLCR0_RFCK_SEL_125:
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return "125";
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default:
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return "100";
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}
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}
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