diff options
| author | Ying Zhang <b40530@freescale.com> | 2014-10-31 13:06:18 +0300 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-12-05 19:06:09 +0300 |
| commit | 3ad2737ee3faa291f75176b667ac3ad4408b023d (patch) | |
| tree | ae8af89395aeb105fc38d7a1f06f7740b754d789 /board/freescale/common/vid.h | |
| parent | e7f533cd5972d762e0544a38c74fce495a9d9d2f (diff) | |
| download | u-boot-3ad2737ee3faa291f75176b667ac3ad4408b023d.tar.xz | |
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/common/vid.h')
| -rw-r--r-- | board/freescale/common/vid.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/board/freescale/common/vid.h b/board/freescale/common/vid.h new file mode 100644 index 0000000000..a9c7bb4790 --- /dev/null +++ b/board/freescale/common/vid.h @@ -0,0 +1,20 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __VID_H_ +#define __VID_H_ + +#define IR36021_LOOP1_MANUAL_ID_OFFSET 0x6A +#define IR36021_LOOP1_VOUT_OFFSET 0x9A +#define IR36021_MFR_ID_OFFSET 0x92 +#define IR36021_MFR_ID 0x43 + +/* step the IR regulator in 5mV increments */ +#define IR_VDD_STEP_DOWN 5 +#define IR_VDD_STEP_UP 5 +int adjust_vdd(ulong vdd_override); + +#endif /* __VID_H_ */ |