diff options
Diffstat (limited to 'board/freescale/ls1088a/ls1088a.c')
| -rw-r--r-- | board/freescale/ls1088a/ls1088a.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/board/freescale/ls1088a/ls1088a.c b/board/freescale/ls1088a/ls1088a.c index d12bcaed8f..188f76dcd2 100644 --- a/board/freescale/ls1088a/ls1088a.c +++ b/board/freescale/ls1088a/ls1088a.c @@ -19,9 +19,13 @@ #include <asm/arch-fsl-layerscape/soc.h> #include <asm/arch/ppa.h> #include <hwconfig.h> +#include <asm/arch/fsl_serdes.h> +#include <asm/arch/soc.h> #include "../common/qixis.h" #include "ls1088a_qixis.h" +#include "../common/vid.h" +#include <fsl_immap.h> DECLARE_GLOBAL_DATA_PTR; @@ -51,6 +55,16 @@ unsigned long long get_qixis_addr(void) } #endif +#if defined(CONFIG_VID) +int init_func_vid(void) +{ + if (adjust_vdd(0) < 0) + printf("core voltage not adjusted\n"); + + return 0; +} +#endif + #if !defined(CONFIG_SPL_BUILD) int checkboard(void) { @@ -323,6 +337,119 @@ int misc_init_r(void) } #endif +int i2c_multiplexer_select_vid_channel(u8 channel) +{ + return select_i2c_ch_pca9547(channel); +} + +#ifdef CONFIG_TARGET_LS1088AQDS +/* read the current value(SVDD) of the LTM Regulator Voltage */ +int get_serdes_volt(void) +{ + int ret, vcode = 0; + u8 chan = PWM_CHANNEL0; + + /* Select the PAGE 0 using PMBus commands PAGE for VDD */ + ret = i2c_write(I2C_SVDD_MONITOR_ADDR, + PMBUS_CMD_PAGE, 1, &chan, 1); + if (ret) { + printf("VID: failed to select VDD Page 0\n"); + return ret; + } + + /* Read the output voltage using PMBus command READ_VOUT */ + ret = i2c_read(I2C_SVDD_MONITOR_ADDR, + PMBUS_CMD_READ_VOUT, 1, (void *)&vcode, 2); + if (ret) { + printf("VID: failed to read the volatge\n"); + return ret; + } + + return vcode; +} + +int set_serdes_volt(int svdd) +{ + int ret, vdd_last; + u8 buff[5] = {0x04, PWM_CHANNEL0, PMBUS_CMD_VOUT_COMMAND, + svdd & 0xFF, (svdd & 0xFF00) >> 8}; + + /* Write the desired voltage code to the SVDD regulator */ + ret = i2c_write(I2C_SVDD_MONITOR_ADDR, + PMBUS_CMD_PAGE_PLUS_WRITE, 1, (void *)&buff, 5); + if (ret) { + printf("VID: I2C failed to write to the volatge regulator\n"); + return -1; + } + + /* Wait for the volatge to get to the desired value */ + do { + vdd_last = get_serdes_volt(); + if (vdd_last < 0) { + printf("VID: Couldn't read sensor abort VID adjust\n"); + return -1; + } + } while (vdd_last != svdd); + + return 1; +} +#else +int get_serdes_volt(void) +{ + return 0; +} + +int set_serdes_volt(int svdd) +{ + int ret; + u8 brdcfg4; + + printf("SVDD changing of RDB\n"); + + /* Read the BRDCFG54 via CLPD */ + ret = i2c_read(CONFIG_SYS_I2C_FPGA_ADDR, + QIXIS_BRDCFG4_OFFSET, 1, (void *)&brdcfg4, 1); + if (ret) { + printf("VID: I2C failed to read the CPLD BRDCFG4\n"); + return -1; + } + + brdcfg4 = brdcfg4 | 0x08; + + /* Write to the BRDCFG4 */ + ret = i2c_write(CONFIG_SYS_I2C_FPGA_ADDR, + QIXIS_BRDCFG4_OFFSET, 1, (void *)&brdcfg4, 1); + if (ret) { + debug("VID: I2C failed to set the SVDD CPLD BRDCFG4\n"); + return -1; + } + + /* Wait for the volatge to get to the desired value */ + udelay(10000); + + return 1; +} +#endif + +/* this function disables the SERDES, changes the SVDD Voltage and enables it*/ +int board_adjust_vdd(int vdd) +{ + int ret = 0; + + debug("%s: vdd = %d\n", __func__, vdd); + + /* Special settings to be performed when voltage is 900mV */ + if (vdd == 900) { + ret = setup_serdes_volt(vdd); + if (ret < 0) { + ret = -1; + goto exit; + } + } +exit: + return ret; +} + int board_init(void) { init_final_memctl_regs(); |