mirror of
https://github.com/AsahiLinux/u-boot
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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>
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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*/
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#include <config.h>
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#include <common.h>
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#include <asm/io.h>
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#include <asm/immap_85xx.h>
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#include <asm/fsl_serdes.h>
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typedef struct serdes_85xx {
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u32 srdscr0; /* 0x00 - SRDS Control Register 0 */
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u32 srdscr1; /* 0x04 - SRDS Control Register 1 */
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u32 srdscr2; /* 0x08 - SRDS Control Register 2 */
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u32 srdscr3; /* 0x0C - SRDS Control Register 3 */
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u32 srdscr4; /* 0x10 - SRDS Control Register 4 */
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} serdes_85xx_t;
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#define FSL_SRDSCR3_EIC0(x) (((x) & 0x1f) << 8)
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#define FSL_SRDSCR3_EIC0_MASK FSL_SRDSCR3_EIC0(0x1f)
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#define FSL_SRDSCR3_EIC1(x) (((x) & 0x1f) << 0)
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#define FSL_SRDSCR3_EIC1_MASK FSL_SRDSCR3_EIC1(0x1f)
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#define FSL_SRDSCR4_EIC2(x) (((x) & 0x1f) << 8)
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#define FSL_SRDSCR4_EIC2_MASK FSL_SRDSCR4_EIC2(0x1f)
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#define FSL_SRDSCR4_EIC3(x) (((x) & 0x1f) << 0)
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#define FSL_SRDSCR4_EIC3_MASK FSL_SRDSCR4_EIC3(0x1f)
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#define EIC_PCIE 0x13
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#define EIC_SGMII 0x04
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#define SRDS1_MAX_LANES 4
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static u32 serdes1_prtcl_map;
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static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
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[0x0] = {PCIE1, NONE, NONE, NONE},
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[0x6] = {PCIE1, PCIE1, PCIE1, PCIE1},
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[0xe] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
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[0xf] = {PCIE1, PCIE1, SGMII_TSEC2, SGMII_TSEC3},
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};
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int is_serdes_configured(enum srds_prtcl prtcl)
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{
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if (!(serdes1_prtcl_map & (1 << NONE)))
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fsl_serdes_init();
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return (1 << prtcl) & serdes1_prtcl_map;
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}
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void fsl_serdes_init(void)
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{
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ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
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serdes_85xx_t *serdes = (void *)CONFIG_SYS_MPC85xx_SERDES1_ADDR;
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u32 pordevsr = in_be32(&gur->pordevsr);
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u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
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MPC85xx_PORDEVSR_IO_SEL_SHIFT;
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int lane;
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u32 mask, val;
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if (serdes1_prtcl_map & (1 << NONE))
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return;
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debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
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if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
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printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
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return;
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}
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for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
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enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
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serdes1_prtcl_map |= (1 << lane_prtcl);
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}
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/* Set the first bit to indicate serdes has been initialized */
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serdes1_prtcl_map |= (1 << NONE);
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/* Init SERDES Receiver electrical idle detection control for PCIe */
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/* Lane 0 is always PCIe 1 */
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mask = FSL_SRDSCR3_EIC0_MASK;
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val = FSL_SRDSCR3_EIC0(EIC_PCIE);
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/* Lane 1 */
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if ((serdes1_cfg_tbl[srds_cfg][1] == PCIE1) ||
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(serdes1_cfg_tbl[srds_cfg][1] == PCIE2)) {
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mask |= FSL_SRDSCR3_EIC1_MASK;
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val |= FSL_SRDSCR3_EIC1(EIC_PCIE);
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}
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/* Handle lanes 0 & 1 */
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clrsetbits_be32(&serdes->srdscr3, mask, val);
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/* Handle lanes 2 & 3 */
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if (srds_cfg == 0x6) {
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mask = FSL_SRDSCR4_EIC2_MASK | FSL_SRDSCR4_EIC3_MASK;
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val = FSL_SRDSCR4_EIC2(EIC_PCIE) | FSL_SRDSCR4_EIC3(EIC_PCIE);
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clrsetbits_be32(&serdes->srdscr4, mask, val);
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}
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/* 100 ms delay */
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udelay(100000);
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}
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