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/* Copyright 2016 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "registers.h"
void jtag_pre_init(void)
{
/*
* We don't need to do anything for JTAG, but if we're resuming from
* deep sleep we need to undo some stuff as soon as possible and this
* is the first init function that's called.
*
* It doesn't hurt anything if this setup is not needed, but we don't
* investigate the reset cause until much later (and doing so is
* destructive), so we'll just do the post-deep-sleep setup every time.
*/
/* Disable the deep sleep triggers */
GR_PMU_LOW_POWER_DIS = 0;
GR_PMU_EXITPD_MASK = 0;
/* Unfreeze the USB module */
GWRITE_FIELD(USB, PCGCCTL, STOPPCLK, 0);
GWRITE_FIELD(USB, PCGCCTL, RSTPDWNMODULE, 0);
GWRITE_FIELD(USB, PCGCCTL, PWRCLMP, 0);
}
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