diff options
| author | Ying Zhang <b40530@freescale.com> | 2014-10-31 18:06:18 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-12-05 08:06:09 -0800 |
| commit | 3ad2737ee3faa291f75176b667ac3ad4408b023d (patch) | |
| tree | ae8af89395aeb105fc38d7a1f06f7740b754d789 /board/freescale/t208xqds | |
| parent | e7f533cd5972d762e0544a38c74fce495a9d9d2f (diff) | |
powerpc/t208xqds: 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 <yorksun@freescale.com>
Diffstat (limited to 'board/freescale/t208xqds')
| -rw-r--r-- | board/freescale/t208xqds/t208xqds.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/board/freescale/t208xqds/t208xqds.c b/board/freescale/t208xqds/t208xqds.c index 5c470c3a497..7c89cd5ee9a 100644 --- a/board/freescale/t208xqds/t208xqds.c +++ b/board/freescale/t208xqds/t208xqds.c @@ -20,6 +20,7 @@ #include "../common/qixis.h" #include "../common/vsc3316_3308.h" +#include "../common/vid.h" #include "t208xqds.h" #include "t208xqds_qixis.h" @@ -86,6 +87,11 @@ int select_i2c_ch_pca9547(u8 ch) return 0; } +int i2c_multiplexer_select_vid_channel(u8 channel) +{ + return select_i2c_ch_pca9547(channel); +} + int brd_mux_lane_to_slot(void) { ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); @@ -358,6 +364,13 @@ int board_early_init_r(void) /* Disable remote I2C connection to qixis fpga */ QIXIS_WRITE(brdcfg[5], QIXIS_READ(brdcfg[5]) & ~BRDCFG5_IRE); + /* + * 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"); + brd_mux_lane_to_slot(); select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT); |