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| author | Ying Zhang <b40530@freescale.com> | 2016-01-22 12:15:13 +0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2016-01-25 12:38:05 -0800 |
| commit | 2f66a828f7621958b6925fc763380fa87be55ee6 (patch) | |
| tree | bbeb74ecf4f687d92def5b24c02c49373f9b016a | |
| parent | cabe4d2f1970eae618ffac4262b61460b9ad3097 (diff) | |
| download | u-boot-imx-2f66a828f7621958b6925fc763380fa87be55ee6.zip u-boot-imx-2f66a828f7621958b6925fc763380fa87be55ee6.tar.gz u-boot-imx-2f66a828f7621958b6925fc763380fa87be55ee6.tar.bz2 | |
powerpc/board/t4240rdb: Enable VID support
The fuse status register provides the values from on-chip
voltage ID efuses programmed at the factory. These values
define the voltage requirements for the chip. u-boot reads
FUSESR and translates the values into the appropriate
commands to set the voltage output value of an external
voltage regulator.
Signed-off-by: Ying Zhang <b40530@freescale.com>
Reviewed-by: York Sun <york.sun@nxp.com>
| -rw-r--r-- | board/freescale/common/vid.c | 2 | ||||
| -rw-r--r-- | board/freescale/t4rdb/t4240rdb.c | 8 | ||||
| -rw-r--r-- | include/configs/T4240RDB.h | 10 |
3 files changed, 19 insertions, 1 deletions
diff --git a/board/freescale/common/vid.c b/board/freescale/common/vid.c index 1ea1b88..1bd65a8 100644 --- a/board/freescale/common/vid.c +++ b/board/freescale/common/vid.c @@ -42,7 +42,7 @@ int __weak board_vdd_drop_compensation(void) * The IR chip can show up under the following addresses: * 0x08 (Verified on T1040RDB-PA,T4240RDB-PB,X-T4240RDB-16GPA) * 0x09 (Verified on T1040RDB-PA) - * 0x38 (Verified on T2080QDS, T2081QDS) + * 0x38 (Verified on T2080QDS, T2081QDS, T4240RDB) */ static int find_ir_chip_on_i2c(void) { diff --git a/board/freescale/t4rdb/t4240rdb.c b/board/freescale/t4rdb/t4240rdb.c index 4f0bbed..406fb13 100644 --- a/board/freescale/t4rdb/t4240rdb.c +++ b/board/freescale/t4rdb/t4240rdb.c @@ -20,6 +20,7 @@ #include "t4rdb.h" #include "cpld.h" +#include "../common/vid.h" DECLARE_GLOBAL_DATA_PTR; @@ -74,6 +75,13 @@ int board_early_init_r(void) MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, 0, flash_esel, BOOKE_PAGESZ_256M, 1); + /* + * Adjust core voltage according to voltage ID + * This function changes I2C mux to channel 2. + */ + if (adjust_vdd(0)) + printf("Warning: Adjusting core voltage failed.\n"); + return 0; } diff --git a/include/configs/T4240RDB.h b/include/configs/T4240RDB.h index 73279c8..4a17f41 100644 --- a/include/configs/T4240RDB.h +++ b/include/configs/T4240RDB.h @@ -606,6 +606,16 @@ unsigned long get_board_ddr_clk(void); #define I2C_VOL_MONITOR_BUS_V_OVF 0x1 #define I2C_VOL_MONITOR_BUS_V_SHIFT 3 +#define CONFIG_VID_FLS_ENV "t4240rdb_vdd_mv" +#ifndef CONFIG_SPL_BUILD +#define CONFIG_VID +#endif +#define CONFIG_VOL_MONITOR_IR36021_SET +#define CONFIG_VOL_MONITOR_IR36021_READ +/* The lowest and highest voltage allowed for T4240RDB */ +#define VDD_MV_MIN 819 +#define VDD_MV_MAX 1212 + /* * eSPI - Enhanced SPI */ |