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https://github.com/brain-hackers/u-boot-brain
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70997d88c4
The bcm283x chips provide a way for the ARM core to communicate with the graphics processor, which is in charge of many things. This is handled by way of a message prototcol. At present the code for sending message (and receiving a reply) is spread around U-Boot, primarily in the board file. This means that sending a message from a driver requires duplicating the code. Create a new message implementation with a function to support powering on a subsystem as a starting point. Signed-off-by: Simon Glass <sjg@chromium.org>
19 lines
353 B
C
19 lines
353 B
C
/*
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* (C) Copyright 2012,2015 Stephen Warren
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _BCM2835_MSG_H
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#define _BCM2835_MSG_H
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/**
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* bcm2835_power_on_module() - power on an SoC module
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*
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* @module: ID of module to power on (BCM2835_MBOX_POWER_DEVID_...)
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* @return 0 if OK, -EIO on error
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*/
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int bcm2835_power_on_module(u32 module);
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#endif
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