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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>
21 lines
446 B
C
21 lines
446 B
C
/*
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* Copyright 2014 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __VID_H_
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#define __VID_H_
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#define IR36021_LOOP1_MANUAL_ID_OFFSET 0x6A
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#define IR36021_LOOP1_VOUT_OFFSET 0x9A
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#define IR36021_MFR_ID_OFFSET 0x92
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#define IR36021_MFR_ID 0x43
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/* step the IR regulator in 5mV increments */
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#define IR_VDD_STEP_DOWN 5
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#define IR_VDD_STEP_UP 5
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int adjust_vdd(ulong vdd_override);
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#endif /* __VID_H_ */
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