From 031acdbae89515371f794d01df819b490ff7ca9c Mon Sep 17 00:00:00 2001 From: Hou Zhiqiang Date: Fri, 9 Dec 2016 16:09:00 +0800 Subject: [PATCH] armv8/fsl_lsch2: Add chip power supply voltage setup Set up chip power supply voltage according to voltage ID. The fuse status register provides the values from on-chip voltage ID fuses programmed at the factory. These values define the voltage requirements for the chip. Main operations: 1. Set up the core voltage 2. Set up the SERDES voltage and reset SERDES lanes 3. Enable/disable DDR controller support 0.9V if needed Signed-off-by: Hou Zhiqiang Reviewed-by: York Sun --- .../cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c | 272 +++++++++++++++++++++ arch/arm/cpu/armv8/fsl-layerscape/soc.c | 89 +++++++ .../include/asm/arch-fsl-layerscape/fsl_serdes.h | 8 + arch/arm/include/asm/arch-fsl-layerscape/soc.h | 3 + include/fsl_ddr_sdram.h | 1 + 5 files changed, 373 insertions(+) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c index e06b063..c0b4d0a 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c @@ -129,6 +129,278 @@ void serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift, serdes_prtcl_map[NONE] = 1; } +__weak int get_serdes_volt(void) +{ + return -1; +} + +__weak int set_serdes_volt(int svdd) +{ + return -1; +} + +int setup_serdes_volt(u32 svdd) +{ + struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); + struct ccsr_serdes *serdes1_base; +#ifdef CONFIG_SYS_FSL_SRDS_2 + struct ccsr_serdes *serdes2_base; +#endif + u32 cfg_rcw4 = gur_in32(&gur->rcwsr[4]); + u32 cfg_rcw5 = gur_in32(&gur->rcwsr[5]); + u32 cfg_tmp, reg = 0; + int svdd_cur, svdd_tar; + int ret; + int i; + + /* Only support switch SVDD to 900mV/1000mV */ + if (svdd != 900 && svdd != 1000) + return -EINVAL; + + svdd_tar = svdd; + svdd_cur = get_serdes_volt(); + if (svdd_cur < 0) + return -EINVAL; + + debug("%s: current SVDD: %dmV; target SVDD: %dmV\n", + __func__, svdd_cur, svdd_tar); + if (svdd_cur == svdd_tar) + return 0; + + serdes1_base = (void *)CONFIG_SYS_FSL_SERDES_ADDR; +#ifdef CONFIG_SYS_FSL_SRDS_2 + serdes2_base = (void *)serdes1_base + 0x10000; +#endif + + /* Put the all enabled lanes in reset */ +#ifdef CONFIG_SYS_FSL_SRDS_1 + cfg_tmp = cfg_rcw4 & FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK; + cfg_tmp >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT; + + for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) { + reg = in_be32(&serdes1_base->lane[i].gcr0); + reg &= 0xFF9FFFFF; + out_be32(&serdes1_base->lane[i].gcr0, reg); + } +#endif +#ifdef CONFIG_SYS_FSL_SRDS_2 + cfg_tmp = cfg_rcw4 & FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK; + cfg_tmp >>= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT; + + for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) { + reg = in_be32(&serdes2_base->lane[i].gcr0); + reg &= 0xFF9FFFFF; + out_be32(&serdes2_base->lane[i].gcr0, reg); + } +#endif + + /* Put the all enabled PLL in reset */ +#ifdef CONFIG_SYS_FSL_SRDS_1 + cfg_tmp = (cfg_rcw5 >> 22) & 0x3; + for (i = 0; i < 2 && !(cfg_tmp & (0x1 << (1 - i))); i++) { + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg &= 0xFFFFFFBF; + reg |= 0x10000000; + out_be32(&serdes1_base->bank[i].rstctl, reg); + udelay(1); + + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg &= 0xFFFFFF1F; + out_be32(&serdes1_base->bank[i].rstctl, reg); + } + udelay(1); +#endif + +#ifdef CONFIG_SYS_FSL_SRDS_2 + cfg_tmp = (cfg_rcw5 >> 20) & 0x3; + for (i = 0; i < 2 && !(cfg_tmp & (0x1 << (1 - i))); i++) { + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg &= 0xFFFFFFBF; + reg |= 0x10000000; + out_be32(&serdes2_base->bank[i].rstctl, reg); + udelay(1); + + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg &= 0xFFFFFF1F; + out_be32(&serdes2_base->bank[i].rstctl, reg); + } + udelay(1); +#endif + + /* Put the Rx/Tx calibration into reset */ +#ifdef CONFIG_SYS_FSL_SRDS_1 + reg = in_be32(&serdes1_base->srdstcalcr); + reg &= 0xF7FFFFFF; + out_be32(&serdes1_base->srdstcalcr, reg); + reg = in_be32(&serdes1_base->srdsrcalcr); + reg &= 0xF7FFFFFF; + out_be32(&serdes1_base->srdsrcalcr, reg); + +#endif +#ifdef CONFIG_SYS_FSL_SRDS_2 + reg = in_be32(&serdes2_base->srdstcalcr); + reg &= 0xF7FFFFFF; + out_be32(&serdes2_base->srdstcalcr, reg); + reg = in_be32(&serdes2_base->srdsrcalcr); + reg &= 0xF7FFFFFF; + out_be32(&serdes2_base->srdsrcalcr, reg); +#endif + + /* + * If SVDD set failed, will not return directly, so that the + * serdes lanes can complete reseting. + */ + ret = set_serdes_volt(svdd_tar); + if (ret) + printf("%s: Failed to set SVDD\n", __func__); + + /* Wait for SVDD to stabilize */ + udelay(100); + + /* For each PLL that’s not disabled via RCW */ +#ifdef CONFIG_SYS_FSL_SRDS_1 + cfg_tmp = (cfg_rcw5 >> 22) & 0x3; + for (i = 0; i < 2 && !(cfg_tmp & (0x1 << (1 - i))); i++) { + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg |= 0x00000020; + out_be32(&serdes1_base->bank[i].rstctl, reg); + udelay(1); + + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg |= 0x00000080; + out_be32(&serdes1_base->bank[i].rstctl, reg); + + /* Take the Rx/Tx calibration out of reset */ + if (!(cfg_tmp == 0x3 && i == 1)) { + udelay(1); + reg = in_be32(&serdes1_base->srdstcalcr); + reg |= 0x08000000; + out_be32(&serdes1_base->srdstcalcr, reg); + reg = in_be32(&serdes1_base->srdsrcalcr); + reg |= 0x08000000; + out_be32(&serdes1_base->srdsrcalcr, reg); + } + } + udelay(1); +#endif + +#ifdef CONFIG_SYS_FSL_SRDS_2 + cfg_tmp = (cfg_rcw5 >> 20) & 0x3; + for (i = 0; i < 2 && !(cfg_tmp & (0x1 << (1 - i))); i++) { + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg |= 0x00000020; + out_be32(&serdes2_base->bank[i].rstctl, reg); + udelay(1); + + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg |= 0x00000080; + out_be32(&serdes2_base->bank[i].rstctl, reg); + + /* Take the Rx/Tx calibration out of reset */ + if (!(cfg_tmp == 0x3 && i == 1)) { + udelay(1); + reg = in_be32(&serdes2_base->srdstcalcr); + reg |= 0x08000000; + out_be32(&serdes2_base->srdstcalcr, reg); + reg = in_be32(&serdes2_base->srdsrcalcr); + reg |= 0x08000000; + out_be32(&serdes2_base->srdsrcalcr, reg); + } + } + udelay(1); + +#endif + + /* Wait for at lesat 625us to ensure the PLLs being reset are locked */ + udelay(800); + +#ifdef CONFIG_SYS_FSL_SRDS_1 + cfg_tmp = (cfg_rcw5 >> 22) & 0x3; + for (i = 0; i < 2 && !(cfg_tmp & (0x1 << (1 - i))); i++) { + /* if the PLL is not locked, set RST_ERR */ + reg = in_be32(&serdes1_base->bank[i].pllcr0); + if (!((reg >> 23) & 0x1)) { + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg |= 0x20000000; + out_be32(&serdes1_base->bank[i].rstctl, reg); + } else { + udelay(1); + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg &= 0xFFFFFFEF; + reg |= 0x00000040; + out_be32(&serdes1_base->bank[i].rstctl, reg); + udelay(1); + } + } +#endif + +#ifdef CONFIG_SYS_FSL_SRDS_2 + cfg_tmp = (cfg_rcw5 >> 20) & 0x3; + for (i = 0; i < 2 && !(cfg_tmp & (0x1 << (1 - i))); i++) { + reg = in_be32(&serdes2_base->bank[i].pllcr0); + if (!((reg >> 23) & 0x1)) { + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg |= 0x20000000; + out_be32(&serdes2_base->bank[i].rstctl, reg); + } else { + udelay(1); + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg &= 0xFFFFFFEF; + reg |= 0x00000040; + out_be32(&serdes2_base->bank[i].rstctl, reg); + udelay(1); + } + } +#endif + + /* Take the all enabled lanes out of reset */ +#ifdef CONFIG_SYS_FSL_SRDS_1 + cfg_tmp = cfg_rcw4 & FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK; + cfg_tmp >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT; + + for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) { + reg = in_be32(&serdes1_base->lane[i].gcr0); + reg |= 0x00600000; + out_be32(&serdes1_base->lane[i].gcr0, reg); + } +#endif +#ifdef CONFIG_SYS_FSL_SRDS_2 + cfg_tmp = cfg_rcw4 & FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK; + cfg_tmp >>= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT; + + for (i = 0; i < 4 && cfg_tmp & (0xf << (3 - i)); i++) { + reg = in_be32(&serdes2_base->lane[i].gcr0); + reg |= 0x00600000; + out_be32(&serdes2_base->lane[i].gcr0, reg); + } +#endif + /* For each PLL being reset, and achieved PLL lock set RST_DONE */ +#ifdef CONFIG_SYS_FSL_SRDS_1 + cfg_tmp = (cfg_rcw5 >> 22) & 0x3; + for (i = 0; i < 2; i++) { + reg = in_be32(&serdes1_base->bank[i].pllcr0); + if (!(cfg_tmp & (0x1 << (1 - i))) && ((reg >> 23) & 0x1)) { + reg = in_be32(&serdes1_base->bank[i].rstctl); + reg |= 0x40000000; + out_be32(&serdes1_base->bank[i].rstctl, reg); + } + } +#endif +#ifdef CONFIG_SYS_FSL_SRDS_2 + cfg_tmp = (cfg_rcw5 >> 20) & 0x3; + for (i = 0; i < 2; i++) { + reg = in_be32(&serdes2_base->bank[i].pllcr0); + if (!(cfg_tmp & (0x1 << (1 - i))) && ((reg >> 23) & 0x1)) { + reg = in_be32(&serdes2_base->bank[i].rstctl); + reg |= 0x40000000; + out_be32(&serdes2_base->bank[i].rstctl, reg); + } + } +#endif + + return ret; +} + void fsl_serdes_init(void) { #ifdef CONFIG_SYS_FSL_SRDS_1 diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index 2f54625..c0fd1a6 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -336,6 +336,95 @@ static void erratum_a010539(void) #endif } +/* Get VDD in the unit mV from voltage ID */ +int get_core_volt_from_fuse(void) +{ + struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); + int vdd; + u32 fusesr; + u8 vid; + + fusesr = in_be32(&gur->dcfg_fusesr); + debug("%s: fusesr = 0x%x\n", __func__, fusesr); + vid = (fusesr >> FSL_CHASSIS2_DCFG_FUSESR_ALTVID_SHIFT) & + FSL_CHASSIS2_DCFG_FUSESR_ALTVID_MASK; + if ((vid == 0) || (vid == FSL_CHASSIS2_DCFG_FUSESR_ALTVID_MASK)) { + vid = (fusesr >> FSL_CHASSIS2_DCFG_FUSESR_VID_SHIFT) & + FSL_CHASSIS2_DCFG_FUSESR_VID_MASK; + } + debug("%s: VID = 0x%x\n", __func__, vid); + switch (vid) { + case 0x00: /* VID isn't supported */ + vdd = -EINVAL; + debug("%s: The VID feature is not supported\n", __func__); + break; + case 0x08: /* 0.9V silicon */ + vdd = 900; + break; + case 0x10: /* 1.0V silicon */ + vdd = 1000; + break; + default: /* Other core voltage */ + vdd = -EINVAL; + printf("%s: The VID(%x) isn't supported\n", __func__, vid); + break; + } + debug("%s: The required minimum volt of CORE is %dmV\n", __func__, vdd); + + return vdd; +} + +__weak int board_switch_core_volt(u32 vdd) +{ + return 0; +} + +static int setup_core_volt(u32 vdd) +{ + return board_setup_core_volt(vdd); +} + +#ifdef CONFIG_SYS_FSL_DDR +static void ddr_enable_0v9_volt(bool en) +{ + struct ccsr_ddr __iomem *ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; + u32 tmp; + + tmp = ddr_in32(&ddr->ddr_cdr1); + + if (en) + tmp |= DDR_CDR1_V0PT9_EN; + else + tmp &= ~DDR_CDR1_V0PT9_EN; + + ddr_out32(&ddr->ddr_cdr1, tmp); +} +#endif + +int setup_chip_volt(void) +{ + int vdd; + + vdd = get_core_volt_from_fuse(); + /* Nothing to do for silicons doesn't support VID */ + if (vdd < 0) + return vdd; + + if (setup_core_volt(vdd)) + printf("%s: Switch core VDD to %dmV failed\n", __func__, vdd); +#ifdef CONFIG_SYS_HAS_SERDES + if (setup_serdes_volt(vdd)) + printf("%s: Switch SVDD to %dmV failed\n", __func__, vdd); +#endif + +#ifdef CONFIG_SYS_FSL_DDR + if (vdd == 900) + ddr_enable_0v9_volt(true); +#endif + + return 0; +} + void fsl_lsch2_early_init_f(void) { struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR; diff --git a/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h b/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h index 9f94b45..d9d948e 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/fsl_serdes.h @@ -162,6 +162,14 @@ int is_serdes_prtcl_valid(int serdes, u32 prtcl); #ifdef CONFIG_FSL_LSCH2 const char *serdes_clock_to_string(u32 clock); int get_serdes_protocol(void); +#ifdef CONFIG_SYS_HAS_SERDES +/* Get the volt of SVDD in unit mV */ +int get_serdes_volt(void); +/* Set the volt of SVDD in unit mV */ +int set_serdes_volt(int svdd); +/* The target volt of SVDD in unit mV */ +int setup_serdes_volt(u32 svdd); +#endif #endif #endif /* __FSL_SERDES_H__ */ diff --git a/arch/arm/include/asm/arch-fsl-layerscape/soc.h b/arch/arm/include/asm/arch-fsl-layerscape/soc.h index 78363b6..9bafa6d 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/soc.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/soc.h @@ -99,6 +99,9 @@ struct ccsr_ahci { void fsl_lsch3_early_init_f(void); #elif defined(CONFIG_FSL_LSCH2) void fsl_lsch2_early_init_f(void); +int setup_chip_volt(void); +/* Setup core vdd in unit mV */ +int board_setup_core_volt(u32 vdd); #endif void cpu_name(char *name); diff --git a/include/fsl_ddr_sdram.h b/include/fsl_ddr_sdram.h index 1404c57..b8de46b 100644 --- a/include/fsl_ddr_sdram.h +++ b/include/fsl_ddr_sdram.h @@ -173,6 +173,7 @@ typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t; /* DDR_CDR1 */ #define DDR_CDR1_DHC_EN 0x80000000 +#define DDR_CDR1_V0PT9_EN 0x40000000 #define DDR_CDR1_ODT_SHIFT 17 #define DDR_CDR1_ODT_MASK 0x6 #define DDR_CDR2_ODT_MASK 0x1 -- 2.7.4