diff options
Diffstat (limited to 'board/freescale/common/vid.c')
| -rw-r--r-- | board/freescale/common/vid.c | 820 |
1 files changed, 322 insertions, 498 deletions
diff --git a/board/freescale/common/vid.c b/board/freescale/common/vid.c index 20f5421da0..6e8296293b 100644 --- a/board/freescale/common/vid.c +++ b/board/freescale/common/vid.c @@ -2,6 +2,7 @@ /* * Copyright 2014 Freescale Semiconductor, Inc. * Copyright 2020 NXP + * Copyright 2020 Stephen Carlson <stcarlso@linux.microsoft.com> */ #include <common.h> @@ -21,14 +22,22 @@ #include <linux/delay.h> #include "vid.h" +/* Voltages are generally handled in mV to keep them as integers */ +#define MV_PER_V 1000 + +/* + * Select the channel on the I2C mux (on some NXP boards) that contains + * the voltage regulator to use for VID. Return 0 for success or nonzero + * for failure. + */ int __weak i2c_multiplexer_select_vid_channel(u8 channel) { return 0; } /* - * Compensate for a board specific voltage drop between regulator and SoC - * return a value in mV + * Compensate for a board specific voltage drop between regulator and SoC. + * Returns the voltage offset in mV. */ int __weak board_vdd_drop_compensation(void) { @@ -36,13 +45,94 @@ int __weak board_vdd_drop_compensation(void) } /* - * Board specific settings for specific voltage value + * Performs any board specific adjustments after the VID voltage has been + * set. Return 0 for success or nonzero for failure. */ int __weak board_adjust_vdd(int vdd) { return 0; } +/* + * Processor specific method of converting the fuse value read from VID + * registers into the core voltage to supply. Return the voltage in mV. + */ +u16 __weak soc_get_fuse_vid(int vid_index) +{ + /* Default VDD for Layerscape Chassis 1 devices */ + static const u16 vdd[32] = { + 0, /* unused */ + 9875, /* 0.9875V */ + 9750, + 9625, + 9500, + 9375, + 9250, + 9125, + 9000, + 8875, + 8750, + 8625, + 8500, + 8375, + 8250, + 8125, + 10000, /* 1.0000V */ + 10125, + 10250, + 10375, + 10500, + 10625, + 10750, + 10875, + 11000, + 0, /* reserved */ + }; + return vdd[vid_index]; +} + +#ifndef I2C_VOL_MONITOR_ADDR +#define I2C_VOL_MONITOR_ADDR 0 +#endif + +#if CONFIG_IS_ENABLED(DM_I2C) +#define DEVICE_HANDLE_T struct udevice * + +#ifndef I2C_VOL_MONITOR_BUS +#define I2C_VOL_MONITOR_BUS 0 +#endif + +/* If DM is in use, retrieve the udevice chip for the specified bus number */ +static int vid_get_device(int address, DEVICE_HANDLE_T *dev) +{ + int ret = i2c_get_chip_for_busnum(I2C_VOL_MONITOR_BUS, address, 1, dev); + + if (ret) + printf("VID: Bus %d has no device with address 0x%02X\n", + I2C_VOL_MONITOR_BUS, address); + return ret; +} + +#define I2C_READ(dev, register, data, length) \ + dm_i2c_read(dev, register, data, length) +#define I2C_WRITE(dev, register, data, length) \ + dm_i2c_write(dev, register, data, length) +#else +#define DEVICE_HANDLE_T int + +/* If DM is not in use, I2C addresses are passed directly */ +static int vid_get_device(int address, DEVICE_HANDLE_T *dev) +{ + *dev = address; + return 0; +} + +#define I2C_READ(dev, register, data, length) \ + i2c_read(dev, register, 1, data, length) +#define I2C_WRITE(dev, register, data, length) \ + i2c_write(dev, register, 1, data, length) +#endif + #if defined(CONFIG_VOL_MONITOR_IR36021_SET) || \ defined(CONFIG_VOL_MONITOR_IR36021_READ) /* @@ -60,30 +150,22 @@ int __weak board_adjust_vdd(int vdd) */ static int find_ir_chip_on_i2c(void) { - int i2caddress; - int ret; - u8 byte; - int i; + int i2caddress, ret, i; + u8 mfrID; const int ir_i2c_addr[] = {0x38, 0x08, 0x09}; -#if CONFIG_IS_ENABLED(DM_I2C) - struct udevice *dev; -#endif + DEVICE_HANDLE_T dev; /* Check all the address */ for (i = 0; i < (sizeof(ir_i2c_addr)/sizeof(ir_i2c_addr[0])); i++) { i2caddress = ir_i2c_addr[i]; -#if !CONFIG_IS_ENABLED(DM_I2C) - ret = i2c_read(i2caddress, - IR36021_MFR_ID_OFFSET, 1, (void *)&byte, - sizeof(byte)); -#else - ret = i2c_get_chip_for_busnum(0, i2caddress, 1, &dev); - if (!ret) - ret = dm_i2c_read(dev, IR36021_MFR_ID_OFFSET, - (void *)&byte, sizeof(byte)); -#endif - if ((ret >= 0) && (byte == IR36021_MFR_ID)) - return i2caddress; + ret = vid_get_device(i2caddress, &dev); + if (!ret) { + ret = I2C_READ(dev, IR36021_MFR_ID_OFFSET, + (void *)&mfrID, sizeof(mfrID)); + /* If manufacturer ID matches the IR36021 */ + if (!ret && mfrID == IR36021_MFR_ID) + return i2caddress; + } } return -1; } @@ -117,35 +199,33 @@ static int read_voltage_from_INA220(int i2caddress) int i, ret, voltage_read = 0; u16 vol_mon; u8 buf[2]; -#if CONFIG_IS_ENABLED(DM_I2C) - struct udevice *dev; -#endif + DEVICE_HANDLE_T dev; + + /* Open device handle */ + ret = vid_get_device(i2caddress, &dev); + if (ret) + return ret; for (i = 0; i < NUM_READINGS; i++) { -#if !CONFIG_IS_ENABLED(DM_I2C) - ret = i2c_read(I2C_VOL_MONITOR_ADDR, - I2C_VOL_MONITOR_BUS_V_OFFSET, 1, - (void *)&buf, 2); -#else - ret = i2c_get_chip_for_busnum(0, I2C_VOL_MONITOR_ADDR, 1, &dev); - if (!ret) - ret = dm_i2c_read(dev, I2C_VOL_MONITOR_BUS_V_OFFSET, - (void *)&buf, 2); -#endif + ret = I2C_READ(dev, I2C_VOL_MONITOR_BUS_V_OFFSET, + (void *)&buf[0], sizeof(buf)); if (ret) { printf("VID: failed to read core voltage\n"); return ret; } + vol_mon = (buf[0] << 8) | buf[1]; if (vol_mon & I2C_VOL_MONITOR_BUS_V_OVF) { printf("VID: Core voltage sensor error\n"); return -1; } + debug("VID: bus voltage reads 0x%04x\n", vol_mon); /* LSB = 4mv */ voltage_read += (vol_mon >> I2C_VOL_MONITOR_BUS_V_SHIFT) * 4; udelay(WAIT_FOR_ADC); } + /* calculate the average */ voltage_read /= NUM_READINGS; @@ -153,30 +233,25 @@ static int read_voltage_from_INA220(int i2caddress) } #endif -/* read voltage from IR */ #ifdef CONFIG_VOL_MONITOR_IR36021_READ +/* read voltage from IR */ static int read_voltage_from_IR(int i2caddress) { int i, ret, voltage_read = 0; u16 vol_mon; u8 buf; -#if CONFIG_IS_ENABLED(DM_I2C) - struct udevice *dev; -#endif + DEVICE_HANDLE_T dev; + + /* Open device handle */ + ret = vid_get_device(i2caddress, &dev); + if (ret) + return ret; for (i = 0; i < NUM_READINGS; i++) { -#if !CONFIG_IS_ENABLED(DM_I2C) - ret = i2c_read(i2caddress, - IR36021_LOOP1_VOUT_OFFSET, - 1, (void *)&buf, 1); -#else - ret = i2c_get_chip_for_busnum(0, i2caddress, 1, &dev); - if (!ret) - ret = dm_i2c_read(dev, IR36021_LOOP1_VOUT_OFFSET, - (void *)&buf, 1); -#endif + ret = I2C_READ(dev, IR36021_LOOP1_VOUT_OFFSET, (void *)&buf, + sizeof(buf)); if (ret) { - printf("VID: failed to read vcpu\n"); + printf("VID: failed to read core voltage\n"); return ret; } vol_mon = buf; @@ -188,7 +263,7 @@ static int read_voltage_from_IR(int i2caddress) /* Resolution is 1/128V. We scale up here to get 1/128mV * and divide at the end */ - voltage_read += vol_mon * 1000; + voltage_read += vol_mon * MV_PER_V; udelay(WAIT_FOR_ADC); } /* Scale down to the real mV as IR resolution is 1/128V, rounding up */ @@ -206,49 +281,94 @@ static int read_voltage_from_IR(int i2caddress) } #endif -#ifdef CONFIG_VOL_MONITOR_LTC3882_READ -/* read the current value of the LTC Regulator Voltage */ -static int read_voltage_from_LTC(int i2caddress) -{ - int ret, vcode = 0; - u8 chan = PWM_CHANNEL0; +#if defined(CONFIG_VOL_MONITOR_ISL68233_READ) || \ + defined(CONFIG_VOL_MONITOR_LTC3882_READ) || \ + defined(CONFIG_VOL_MONITOR_ISL68233_SET) || \ + defined(CONFIG_VOL_MONITOR_LTC3882_SET) -#if !CONFIG_IS_ENABLED(DM_I2C) - /* select the PAGE 0 using PMBus commands PAGE for VDD*/ - ret = i2c_write(I2C_VOL_MONITOR_ADDR, - PMBUS_CMD_PAGE, 1, &chan, 1); -#else - struct udevice *dev; +/* + * The message displayed if the VOUT exponent causes a resolution + * worse than 1.0 V (if exponent is >= 0). + */ +#define VOUT_WARNING "VID: VOUT_MODE exponent has resolution worse than 1 V!\n" - ret = i2c_get_chip_for_busnum(0, I2C_VOL_MONITOR_ADDR, 1, &dev); - if (!ret) - ret = dm_i2c_write(dev, PMBUS_CMD_PAGE, &chan, 1); -#endif +/* Checks the PMBus voltage monitor for the format used for voltage values */ +static int get_pmbus_multiplier(DEVICE_HANDLE_T dev) +{ + u8 mode; + int exponent, multiplier, ret; + + ret = I2C_READ(dev, PMBUS_CMD_VOUT_MODE, &mode, sizeof(mode)); if (ret) { - printf("VID: failed to select VDD Page 0\n"); + printf("VID: unable to determine voltage multiplier\n"); + return 1; + } + + /* Upper 3 bits is mode, lower 5 bits is exponent */ + exponent = (int)mode & 0x1F; + mode >>= 5; + switch (mode) { + case 0: + /* Linear, 5 bit twos component exponent */ + if (exponent & 0x10) { + multiplier = 1 << (16 - (exponent & 0xF)); + } else { + /* If exponent is >= 0, then resolution is 1 V! */ + printf(VOUT_WARNING); + multiplier = 1; + } + break; + case 1: + /* VID code identifier */ + printf("VID: custom VID codes are not supported\n"); + multiplier = MV_PER_V; + break; + default: + /* Direct, in mV */ + multiplier = MV_PER_V; + break; + } + + debug("VID: calculated multiplier is %d\n", multiplier); + return multiplier; +} +#endif + +#if defined(CONFIG_VOL_MONITOR_ISL68233_READ) || \ + defined(CONFIG_VOL_MONITOR_LTC3882_READ) +static int read_voltage_from_pmbus(int i2caddress) +{ + int ret, multiplier, vout; + u8 channel = PWM_CHANNEL0; + u16 vcode; + DEVICE_HANDLE_T dev; + + /* Open device handle */ + ret = vid_get_device(i2caddress, &dev); + if (ret) return ret; - } -#if !CONFIG_IS_ENABLED(DM_I2C) - /*read the output voltage using PMBus command READ_VOUT*/ - ret = i2c_read(I2C_VOL_MONITOR_ADDR, - PMBUS_CMD_READ_VOUT, 1, (void *)&vcode, 2); -#else - ret = dm_i2c_read(dev, PMBUS_CMD_READ_VOUT, (void *)&vcode, 2); + /* Select the right page */ + ret = I2C_WRITE(dev, PMBUS_CMD_PAGE, &channel, sizeof(channel)); if (ret) { - printf("VID: failed to read the volatge\n"); + printf("VID: failed to select VDD page %d\n", channel); return ret; } -#endif + + /* VOUT is little endian */ + ret = I2C_READ(dev, PMBUS_CMD_READ_VOUT, (void *)&vcode, sizeof(vcode)); if (ret) { - printf("VID: failed to read the volatge\n"); + printf("VID: failed to read core voltage\n"); return ret; } - /* Scale down to the real mV as LTC resolution is 1/4096V,rounding up */ - vcode = DIV_ROUND_UP(vcode * 1000, 4096); - - return vcode; + /* Scale down to the real mV */ + multiplier = get_pmbus_multiplier(dev); + vout = (int)vcode; + /* Multiplier 1000 (direct mode) requires no change to convert */ + if (multiplier != MV_PER_V) + vout = DIV_ROUND_UP(vout * MV_PER_V, multiplier); + return vout - board_vdd_drop_compensation(); } #endif @@ -256,13 +376,14 @@ static int read_voltage(int i2caddress) { int voltage_read; #ifdef CONFIG_VOL_MONITOR_INA220 - voltage_read = read_voltage_from_INA220(i2caddress); + voltage_read = read_voltage_from_INA220(I2C_VOL_MONITOR_ADDR); #elif defined CONFIG_VOL_MONITOR_IR36021_READ voltage_read = read_voltage_from_IR(i2caddress); -#elif defined CONFIG_VOL_MONITOR_LTC3882_READ - voltage_read = read_voltage_from_LTC(i2caddress); +#elif defined(CONFIG_VOL_MONITOR_ISL68233_READ) || \ + defined(CONFIG_VOL_MONITOR_LTC3882_READ) + voltage_read = read_voltage_from_pmbus(i2caddress); #else - return -1; + voltage_read = -1; #endif return voltage_read; } @@ -300,7 +421,7 @@ static int wait_for_new_voltage(int vdd, int i2caddress) } /* - * this function keeps reading the voltage until it is stable or until the + * Blocks and reads the VID voltage until it stabilizes, or the * timeout expires */ static int wait_for_voltage_stable(int i2caddress) @@ -310,9 +431,9 @@ static int wait_for_voltage_stable(int i2caddress) vdd = read_voltage(i2caddress); udelay(NUM_READINGS * WAIT_FOR_ADC); - /* wait until voltage is stable */ vdd_current = read_voltage(i2caddress); - /* The maximum timeout is + /* + * The maximum timeout is * MAX_LOOP_WAIT_VOL_STABLE * NUM_READINGS * WAIT_FOR_ADC */ for (timeout = MAX_LOOP_WAIT_VOL_STABLE; @@ -327,12 +448,18 @@ static int wait_for_voltage_stable(int i2caddress) return vdd_current; } -/* Set the voltage to the IR chip */ +/* Sets the VID voltage using the IR36021 */ static int set_voltage_to_IR(int i2caddress, int vdd) { int wait, vdd_last; int ret; u8 vid; + DEVICE_HANDLE_T dev; + + /* Open device handle */ + ret = vid_get_device(i2caddress, &dev); + if (ret) + return ret; /* Compensate for a board specific voltage drop between regulator and * SoC before converting into an IR VID value @@ -344,20 +471,10 @@ static int set_voltage_to_IR(int i2caddress, int vdd) vid = DIV_ROUND_UP(vdd - 245, 5); #endif -#if !CONFIG_IS_ENABLED(DM_I2C) - ret = i2c_write(i2caddress, IR36021_LOOP1_MANUAL_ID_OFFSET, - 1, (void *)&vid, sizeof(vid)); -#else - struct udevice *dev; - - ret = i2c_get_chip_for_busnum(0, i2caddress, 1, &dev); - if (!ret) - ret = dm_i2c_write(dev, IR36021_LOOP1_MANUAL_ID_OFFSET, - (void *)&vid, sizeof(vid)); - -#endif + ret = I2C_WRITE(dev, IR36021_LOOP1_MANUAL_ID_OFFSET, (void *)&vid, + sizeof(vid)); if (ret) { - printf("VID: failed to write VID\n"); + printf("VID: failed to write new voltage\n"); return -1; } wait = wait_for_new_voltage(vdd, i2caddress); @@ -371,81 +488,59 @@ static int set_voltage_to_IR(int i2caddress, int vdd) debug("VID: Current voltage is %d mV\n", vdd_last); return vdd_last; } - #endif -#ifdef CONFIG_VOL_MONITOR_LTC3882_SET -/* this function sets the VDD and returns the value set */ -static int set_voltage_to_LTC(int i2caddress, int vdd) +#if defined(CONFIG_VOL_MONITOR_ISL68233_SET) || \ + defined(CONFIG_VOL_MONITOR_LTC3882_SET) +static int set_voltage_to_pmbus(int i2caddress, int vdd) { int ret, vdd_last, vdd_target = vdd; - int count = 100, temp = 0; + int count = MAX_LOOP_WAIT_NEW_VOL, temp = 0, multiplier; unsigned char value; - /* Scale up to the LTC resolution is 1/4096V */ - vdd = (vdd * 4096) / 1000; + /* The data to be sent with the PMBus command PAGE_PLUS_WRITE */ + u8 buffer[5] = { 0x04, PWM_CHANNEL0, PMBUS_CMD_VOUT_COMMAND, 0, 0 }; + DEVICE_HANDLE_T dev; - /* 5-byte buffer which needs to be sent following the - * PMBus command PAGE_PLUS_WRITE. - */ - u8 buff[5] = {0x04, PWM_CHANNEL0, PMBUS_CMD_VOUT_COMMAND, - vdd & 0xFF, (vdd & 0xFF00) >> 8}; + /* Open device handle */ + ret = vid_get_device(i2caddress, &dev); + if (ret) + return ret; + + /* Scale up to the proper value for the VOUT command, little endian */ + multiplier = get_pmbus_multiplier(dev); + vdd += board_vdd_drop_compensation(); + if (multiplier != MV_PER_V) + vdd = DIV_ROUND_UP(vdd * multiplier, MV_PER_V); + buffer[3] = vdd & 0xFF; + buffer[4] = (vdd & 0xFF00) >> 8; - /* Write the desired voltage code to the regulator */ -#if !CONFIG_IS_ENABLED(DM_I2C) /* Check write protect state */ - ret = i2c_read(I2C_VOL_MONITOR_ADDR, - PMBUS_CMD_WRITE_PROTECT, 1, - (void *)&value, sizeof(value)); + ret = I2C_READ(dev, PMBUS_CMD_WRITE_PROTECT, (void *)&value, + sizeof(value)); if (ret) goto exit; if (value != EN_WRITE_ALL_CMD) { value = EN_WRITE_ALL_CMD; - ret = i2c_write(I2C_VOL_MONITOR_ADDR, - PMBUS_CMD_WRITE_PROTECT, 1, + ret = I2C_WRITE(dev, PMBUS_CMD_WRITE_PROTECT, (void *)&value, sizeof(value)); if (ret) goto exit; } - ret = i2c_write(I2C_VOL_MONITOR_ADDR, - PMBUS_CMD_PAGE_PLUS_WRITE, 1, - (void *)&buff, sizeof(buff)); -#else - struct udevice *dev; - - ret = i2c_get_chip_for_busnum(0, I2C_VOL_MONITOR_ADDR, 1, &dev); - if (!ret) { - /* Check write protect state */ - ret = dm_i2c_read(dev, - PMBUS_CMD_WRITE_PROTECT, - (void *)&value, sizeof(value)); - if (ret) - goto exit; - - if (value != EN_WRITE_ALL_CMD) { - value = EN_WRITE_ALL_CMD; - ret = dm_i2c_write(dev, - PMBUS_CMD_WRITE_PROTECT, - (void *)&value, sizeof(value)); - if (ret) - goto exit; - } - - ret = dm_i2c_write(dev, PMBUS_CMD_PAGE_PLUS_WRITE, - (void *)&buff, sizeof(buff)); - } -#endif -exit: + /* Write the desired voltage code to the regulator */ + ret = I2C_WRITE(dev, PMBUS_CMD_PAGE_PLUS_WRITE, (void *)&buffer[0], + sizeof(buffer)); if (ret) { - printf("VID: I2C failed to write to the volatge regulator\n"); + printf("VID: I2C failed to write to the voltage regulator\n"); return -1; } - /* Wait for the volatge to get to the desired value */ +exit: + /* Wait for the voltage to get to the desired value */ do { - vdd_last = read_voltage_from_LTC(i2caddress); + vdd_last = read_voltage_from_pmbus(i2caddress); if (vdd_last < 0) { printf("VID: Couldn't read sensor abort VID adjust\n"); return -1; @@ -464,325 +559,80 @@ static int set_voltage(int i2caddress, int vdd) #ifdef CONFIG_VOL_MONITOR_IR36021_SET vdd_last = set_voltage_to_IR(i2caddress, vdd); -#elif defined CONFIG_VOL_MONITOR_LTC3882_SET - vdd_last = set_voltage_to_LTC(i2caddress, vdd); +#elif defined(CONFIG_VOL_MONITOR_ISL68233_SET) || \ + defined(CONFIG_VOL_MONITOR_LTC3882_SET) + vdd_last = set_voltage_to_pmbus(i2caddress, vdd); #else #error Specific voltage monitor must be defined #endif return vdd_last; } -#ifdef CONFIG_FSL_LSCH3 int adjust_vdd(ulong vdd_override) { int re_enable = disable_interrupts(); +#if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); - u32 fusesr; -#if defined(CONFIG_VOL_MONITOR_IR36021_SET) || \ - defined(CONFIG_VOL_MONITOR_IR36021_READ) - u8 vid, buf; #else - u8 vid; + ccsr_gur_t __iomem *gur = + (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); #endif - int vdd_target, vdd_current, vdd_last; - int ret, i2caddress = 0; + u8 vid; + u32 fusesr; + int vdd_current, vdd_last, vdd_target; + int ret, i2caddress = I2C_VOL_MONITOR_ADDR; unsigned long vdd_string_override; char *vdd_string; -#if defined(CONFIG_ARCH_LX2160A) || defined(CONFIG_ARCH_LX2162A) - static const u16 vdd[32] = { - 8250, - 7875, - 7750, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 8000, - 8125, - 8250, - 0, /* reserved */ - 8500, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - }; -#else -#ifdef CONFIG_ARCH_LS1088A - static const uint16_t vdd[32] = { - 10250, - 9875, - 9750, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 9000, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 10000, /* 1.0000V */ - 10125, - 10250, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - }; -#else - static const uint16_t vdd[32] = { - 10500, - 0, /* reserved */ - 9750, - 0, /* reserved */ - 9500, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 9000, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 10000, /* 1.0000V */ - 0, /* reserved */ - 10250, - 0, /* reserved */ - 10500, - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - 0, /* reserved */ - }; -#endif -#endif - struct vdd_drive { - u8 vid; - unsigned voltage; - }; - - ret = i2c_multiplexer_select_vid_channel(I2C_MUX_CH_VOL_MONITOR); - if (ret) { - debug("VID: I2C failed to switch channel\n"); - ret = -1; - goto exit; - } #if defined(CONFIG_VOL_MONITOR_IR36021_SET) || \ defined(CONFIG_VOL_MONITOR_IR36021_READ) - ret = find_ir_chip_on_i2c(); - if (ret < 0) { - printf("VID: Could not find voltage regulator on I2C.\n"); - ret = -1; - goto exit; - } else { - i2caddress = ret; - debug("VID: IR Chip found on I2C address 0x%02x\n", i2caddress); - } - - /* check IR chip work on Intel mode*/ -#if !CONFIG_IS_ENABLED(DM_I2C) - ret = i2c_read(i2caddress, - IR36021_INTEL_MODE_OOFSET, - 1, (void *)&buf, 1); -#else - struct udevice *dev; - - ret = i2c_get_chip_for_busnum(0, i2caddress, 1, &dev); - if (!ret) - ret = dm_i2c_read(dev, IR36021_INTEL_MODE_OOFSET, - (void *)&buf, 1); -#endif - if (ret) { - printf("VID: failed to read IR chip mode.\n"); - ret = -1; - goto exit; - } - - if ((buf & IR36021_MODE_MASK) != IR36021_INTEL_MODE) { - printf("VID: IR Chip is not used in Intel mode.\n"); - ret = -1; - goto exit; - } + u8 buf; + DEVICE_HANDLE_T dev; #endif - /* get the voltage ID from fuse status register */ + /* + * VID is used according to the table below + * --------------------------------------- + * | DA_V | + * |-------------------------------------| + * | 5b00000 | 5b00001-5b11110 | 5b11111 | + * ---------------+---------+-----------------+---------| + * | D | 5b00000 | NO VID | VID = DA_V | NO VID | + * | A |----------+---------+-----------------+---------| + * | _ | 5b00001 |VID = | VID = |VID = | + * | V | ~ | DA_V_ALT| DA_V_ALT | DA_A_VLT| + * | _ | 5b11110 | | | | + * | A |----------+---------+-----------------+---------| + * | L | 5b11111 | No VID | VID = DA_V | NO VID | + * | T | | | | | + * ------------------------------------------------------ + */ +#if defined(CONFIG_FSL_LSCH3) fusesr = in_le32(&gur->dcfg_fusesr); vid = (fusesr >> FSL_CHASSIS3_DCFG_FUSESR_ALTVID_SHIFT) & - FSL_CHASSIS3_DCFG_FUSESR_ALTVID_MASK; - if ((vid == 0) || (vid == FSL_CHASSIS3_DCFG_FUSESR_ALTVID_MASK)) { + FSL_CHASSIS3_DCFG_FUSESR_ALTVID_MASK; + if (vid == 0 || vid == FSL_CHASSIS3_DCFG_FUSESR_ALTVID_MASK) { vid = (fusesr >> FSL_CHASSIS3_DCFG_FUSESR_VID_SHIFT) & - FSL_CHASSIS3_DCFG_FUSESR_VID_MASK; - } - vdd_target = vdd[vid]; - - /* check override variable for overriding VDD */ - vdd_string = env_get(CONFIG_VID_FLS_ENV); - if (vdd_override == 0 && vdd_string && - !strict_strtoul(vdd_string, 10, &vdd_string_override)) - vdd_override = vdd_string_override; - - if (vdd_override >= VDD_MV_MIN && vdd_override <= VDD_MV_MAX) { - vdd_target = vdd_override * 10; /* convert to 1/10 mV */ - debug("VDD override is %lu\n", vdd_override); - } else if (vdd_override != 0) { - printf("Invalid value.\n"); + FSL_CHASSIS3_DCFG_FUSESR_VID_MASK; } - - /* divide and round up by 10 to get a value in mV */ - vdd_target = DIV_ROUND_UP(vdd_target, 10); - if (vdd_target == 0) { - debug("VID: VID not used\n"); - ret = 0; - goto exit; - } else if (vdd_target < VDD_MV_MIN || vdd_target > VDD_MV_MAX) { - /* Check vdd_target is in valid range */ - printf("VID: Target VID %d mV is not in range.\n", - vdd_target); - ret = -1; - goto exit; - } else { - debug("VID: vid = %d mV\n", vdd_target); - } - - /* - * Read voltage monitor to check real voltage. - */ - vdd_last = read_voltage(i2caddress); - if (vdd_last < 0) { - printf("VID: Couldn't read sensor abort VID adjustment\n"); - ret = -1; - goto exit; +#elif defined(CONFIG_FSL_LSCH2) + fusesr = in_be32(&gur->dcfg_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; } - vdd_current = vdd_last; - debug("VID: Core voltage is currently at %d mV\n", vdd_last); - -#ifdef CONFIG_VOL_MONITOR_LTC3882_SET - /* Set the target voltage */ - vdd_last = vdd_current = set_voltage(i2caddress, vdd_target); #else - /* - * Adjust voltage to at or one step above target. - * As measurements are less precise than setting the values - * we may run through dummy steps that cancel each other - * when stepping up and then down. - */ - while (vdd_last > 0 && - vdd_last < vdd_target) { - vdd_current += IR_VDD_STEP_UP; - vdd_last = set_voltage(i2caddress, vdd_current); - } - while (vdd_last > 0 && - vdd_last > vdd_target + (IR_VDD_STEP_DOWN - 1)) { - vdd_current -= IR_VDD_STEP_DOWN; - vdd_last = set_voltage(i2caddress, vdd_current); + fusesr = in_be32(&gur->dcfg_fusesr); + vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_ALTVID_SHIFT) & + FSL_CORENET_DCFG_FUSESR_ALTVID_MASK; + if (vid == 0 || vid == FSL_CORENET_DCFG_FUSESR_ALTVID_MASK) { + vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_VID_SHIFT) & + FSL_CORENET_DCFG_FUSESR_VID_MASK; } - #endif - if (board_adjust_vdd(vdd_target) < 0) { - ret = -1; - goto exit; - } - - if (vdd_last > 0) - printf("VID: Core voltage after adjustment is at %d mV\n", - vdd_last); - else - ret = -1; -exit: - if (re_enable) - enable_interrupts(); - i2c_multiplexer_select_vid_channel(I2C_MUX_CH_DEFAULT); - return ret; -} -#else /* !CONFIG_FSL_LSCH3 */ -int adjust_vdd(ulong vdd_override) -{ - int re_enable = disable_interrupts(); -#if defined(CONFIG_FSL_LSCH2) - struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); -#else - ccsr_gur_t __iomem *gur = - (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); -#endif - u32 fusesr; - u8 vid, buf; - int vdd_target, vdd_current, vdd_last; - int ret, i2caddress; - unsigned long vdd_string_override; - char *vdd_string; - static const uint16_t vdd[32] = { - 0, /* unused */ - 9875, /* 0.9875V */ - 9750, - 9625, - 9500, - 9375, - 9250, - 9125, - 9000, - 8875, - 8750, - 8625, - 8500, - 8375, - 8250, - 8125, - 10000, /* 1.0000V */ - 10125, - 10250, - 10375, - 10500, - 10625, - 10750, - 10875, - 11000, - 0, /* reserved */ - }; - struct vdd_drive { - u8 vid; - unsigned voltage; - }; + vdd_target = soc_get_fuse_vid((int)vid); ret = i2c_multiplexer_select_vid_channel(I2C_MUX_CH_VOL_MONITOR); if (ret) { @@ -790,6 +640,7 @@ int adjust_vdd(ulong vdd_override) ret = -1; goto exit; } + #if defined(CONFIG_VOL_MONITOR_IR36021_SET) || \ defined(CONFIG_VOL_MONITOR_IR36021_READ) ret = find_ir_chip_on_i2c(); @@ -802,19 +653,13 @@ int adjust_vdd(ulong vdd_override) debug("VID: IR Chip found on I2C address 0x%02x\n", i2caddress); } - /* check IR chip work on Intel mode*/ -#if !CONFIG_IS_ENABLED(DM_I2C) - ret = i2c_read(i2caddress, - IR36021_INTEL_MODE_OOFSET, - 1, (void *)&buf, 1); -#else - struct udevice *dev; + ret = vid_get_device(i2caddress, &dev); + if (ret) + return ret; - ret = i2c_get_chip_for_busnum(0, i2caddress, 1, &dev); - if (!ret) - ret = dm_i2c_read(dev, IR36021_INTEL_MODE_OOFSET, - (void *)&buf, 1); -#endif + /* check IR chip work on Intel mode */ + ret = I2C_READ(dev, IR36021_INTEL_MODE_OFFSET, (void *)&buf, + sizeof(buf)); if (ret) { printf("VID: failed to read IR chip mode.\n"); ret = -1; @@ -827,52 +672,18 @@ int adjust_vdd(ulong vdd_override) } #endif - /* get the voltage ID from fuse status register */ - fusesr = in_be32(&gur->dcfg_fusesr); - /* - * VID is used according to the table below - * --------------------------------------- - * | DA_V | - * |-------------------------------------| - * | 5b00000 | 5b00001-5b11110 | 5b11111 | - * ---------------+---------+-----------------+---------| - * | D | 5b00000 | NO VID | VID = DA_V | NO VID | - * | A |----------+---------+-----------------+---------| - * | _ | 5b00001 |VID = | VID = |VID = | - * | V | ~ | DA_V_ALT| DA_V_ALT | DA_A_VLT| - * | _ | 5b11110 | | | | - * | A |----------+---------+-----------------+---------| - * | L | 5b11111 | No VID | VID = DA_V | NO VID | - * | T | | | | | - * ------------------------------------------------------ - */ -#ifdef CONFIG_FSL_LSCH2 - 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; - } -#else - vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_ALTVID_SHIFT) & - FSL_CORENET_DCFG_FUSESR_ALTVID_MASK; - if ((vid == 0) || (vid == FSL_CORENET_DCFG_FUSESR_ALTVID_MASK)) { - vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_VID_SHIFT) & - FSL_CORENET_DCFG_FUSESR_VID_MASK; - } -#endif - vdd_target = vdd[vid]; - /* check override variable for overriding VDD */ vdd_string = env_get(CONFIG_VID_FLS_ENV); + debug("VID: Initial VDD value is %d mV\n", + DIV_ROUND_UP(vdd_target, 10)); if (vdd_override == 0 && vdd_string && !strict_strtoul(vdd_string, 10, &vdd_string_override)) vdd_override = vdd_string_override; if (vdd_override >= VDD_MV_MIN && vdd_override <= VDD_MV_MAX) { vdd_target = vdd_override * 10; /* convert to 1/10 mV */ - debug("VDD override is %lu\n", vdd_override); + debug("VID: VDD override is %lu\n", vdd_override); } else if (vdd_override != 0) { - printf("Invalid value.\n"); + printf("VID: Invalid VDD value.\n"); } if (vdd_target == 0) { debug("VID: VID not used\n"); @@ -895,6 +706,13 @@ int adjust_vdd(ulong vdd_override) } vdd_current = vdd_last; debug("VID: Core voltage is currently at %d mV\n", vdd_last); + +#if defined(CONFIG_VOL_MONITOR_LTC3882_SET) || \ + defined(CONFIG_VOL_MONITOR_ISL68233_SET) + /* Set the target voltage */ + vdd_current = set_voltage(i2caddress, vdd_target); + vdd_last = vdd_current; +#else /* * Adjust voltage to at or one step above target. * As measurements are less precise than setting the values @@ -911,6 +729,13 @@ int adjust_vdd(ulong vdd_override) vdd_current -= IR_VDD_STEP_DOWN; vdd_last = set_voltage(i2caddress, vdd_current); } +#endif + + /* Board specific adjustments */ + if (board_adjust_vdd(vdd_target) < 0) { + ret = -1; + goto exit; + } if (vdd_last > 0) printf("VID: Core voltage after adjustment is at %d mV\n", @@ -925,11 +750,10 @@ exit: return ret; } -#endif static int print_vdd(void) { - int vdd_last, ret, i2caddress = 0; + int vdd_last, ret, i2caddress = I2C_VOL_MONITOR_ADDR; ret = i2c_multiplexer_select_vid_channel(I2C_MUX_CH_VOL_MONITOR); if (ret) { |