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Revision a20303725ec31ea0fcf498f1885b1d4245a4ee56 authored by Robin Murphy on 10 August 2016, 12:02:17 UTC, committed by Arnd Bergmann on 10 August 2016, 20:58:09 UTC 
ARM: dts: realview: Fix PBX-A9 cache description
 
Clearly QEMU is very permissive in how its PL310 model may be set up,
but the real hardware turns out to be far more particular about things
actually being correct. Fix up the DT description so that the real
thing actually boots:

- The arm,data-latency and arm,tag-latency properties need 3 cells to
  be valid, otherwise we end up retaining the default 8-cycle latencies
  which leads pretty quickly to lockup.
- The arm,dirty-latency property is only relevant to L210/L220, so get
  rid of it.
- The cache geometry override also leads to lockup and/or general
  misbehaviour. Irritatingly, the manual doesn't state the actual PL310
  configuration, but based on the boardfile code and poking registers
  from the Boot Monitor, it would seem to be 8 sets of 16KB ways.

With that, we can successfully boot to enjoy the fun of mismatched FPUs...

Cc: stable@vger.kernel.org
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
1 parent b5c86b7
Raw File
bebob_yamaha.c 
/*
 * bebob_yamaha.c - a part of driver for BeBoB based devices
 *
 * Copyright (c) 2013-2014 Takashi Sakamoto
 *
 * Licensed under the terms of the GNU General Public License, version 2.
 */

#include "./bebob.h"

/*
 * NOTE:
 * Yamaha GO44 is not designed to be used as stand-alone mixer. So any streams
 * must be accompanied. If changing the state, a LED on the device starts to
 * blink and its sync status is false. In this state, the device sounds nothing
 * even if streaming. To start streaming at the current sampling rate is only
 * way to revocer this state. GO46 is better for stand-alone mixer.
 *
 * Both of them have a capability to change its sampling rate up to 192.0kHz.
 * At 192.0kHz, the device reports 4 PCM-in, 1 MIDI-in, 6 PCM-out, 1 MIDI-out.
 * But Yamaha's driver reduce 2 PCM-in, 1 MIDI-in, 2 PCM-out, 1 MIDI-out to use
 * 'Extended Stream Format Information Command - Single Request' in 'Additional
 * AVC commands' defined by BridgeCo.
 * This ALSA driver don't do this because a bit tiresome. Then isochronous
 * streaming with many asynchronous transactions brings sounds with noises.
 * Unfortunately current 'ffado-mixer' generated many asynchronous transaction
 * to observe device's state, mainly check cmp connection and signal format. I
 * reccomend users to close ffado-mixer at 192.0kHz if mixer is needless.
 */

static enum snd_bebob_clock_type clk_src_types[] = {
	SND_BEBOB_CLOCK_TYPE_INTERNAL,
	SND_BEBOB_CLOCK_TYPE_EXTERNAL,	/* S/PDIF */
};
static int
clk_src_get(struct snd_bebob *bebob, unsigned int *id)
{
	int err;

	err = avc_audio_get_selector(bebob->unit, 0, 4, id);
	if (err < 0)
		return err;

	if (*id >= ARRAY_SIZE(clk_src_types))
		return -EIO;

	return 0;
}
static const struct snd_bebob_clock_spec clock_spec = {
	.num	= ARRAY_SIZE(clk_src_types),
	.types	= clk_src_types,
	.get	= &clk_src_get,
};
static const struct snd_bebob_rate_spec rate_spec = {
	.get	= &snd_bebob_stream_get_rate,
	.set	= &snd_bebob_stream_set_rate,
};
const struct snd_bebob_spec yamaha_go_spec = {
	.clock	= &clock_spec,
	.rate	= &rate_spec,
	.meter	= NULL
};
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