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From: Curtis Malainey <cujomalainey@chromium.org>
To: alsa-devel@alsa-project.org
Cc: Oder Chiou <oder_chiou@realtek.com>,
	Takashi Iwai <tiwai@suse.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Ben Zhang <benzh@chromium.org>, Mark Brown <broonie@kernel.org>,
	Bard Liao <bardliao@realtek.com>,
	Curtis Malainey <cujomalainey@chromium.org>
Subject: [alsa-devel] [PATCH v3 05/11] ASoC: rt5677: Mark reg RT5677_PWR_ANLG2 as volatile
Date: Tue,  5 Nov 2019 17:13:30 -0800
Message-ID: <20191106011335.223061-6-cujomalainey@chromium.org> (raw)
In-Reply-To: <20191106011335.223061-1-cujomalainey@chromium.org>

From: Ben Zhang <benzh@chromium.org>

The codec dies when RT5677_PWR_ANLG2(MX-64h) is set to 0xACE1
while it's streaming audio over SPI. The DSP firmware turns
on PLL2 (MX-64 bit 8) when SPI streaming starts.  However regmap
does not believe that register can change by itself. When
BST1 (bit 15) is turned on with regmap_update_bits(), it doesn't
read the register first before write, so PLL2 power bit is
cleared by accident.

Marking MX-64h as volatile in regmap solved the issue.

Signed-off-by: Ben Zhang <benzh@chromium.org>
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
---
 sound/soc/codecs/rt5677.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index ea235f3874ca..e5db9dc60378 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -302,6 +302,7 @@ static bool rt5677_volatile_register(struct device *dev, unsigned int reg)
 	case RT5677_I2C_MASTER_CTRL7:
 	case RT5677_I2C_MASTER_CTRL8:
 	case RT5677_HAP_GENE_CTRL2:
+	case RT5677_PWR_ANLG2: /* Modified by DSP firmware */
 	case RT5677_PWR_DSP_ST:
 	case RT5677_PRIV_DATA:
 	case RT5677_ASRC_22:
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog

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Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06  1:13 [alsa-devel] [PATCH v3 00/11] Add Samus Hotwording for RT5677 Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 01/11] ASoC: rt5677: Load firmware via SPI using delayed work Curtis Malainey
2019-11-06  1:17   ` Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 02/11] ASoC: bdw-rt5677: Add a DAI link for rt5677 SPI PCM device Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 03/11] ASoC: rt5677: Enable jack detect while DSP is running Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 04/11] ASoC: rt5677: Add DAPM audio path for hotword stream Curtis Malainey
2019-11-06  1:13 ` Curtis Malainey [this message]
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 06/11] ASoC: rt5677: Stop and restart DSP over suspend/resume Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 07/11] ASoC: rt5677: Disable irq at suspend Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 08/11] ASoC: rt5677: Allow VAD to be shut on/off at all times Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 09/11] ASoC: bdw-rt5677: Turn on MCLK1 for DSP via DAPM Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 10/11] ASoC: rt5677: Set ADC clock to use PLL and enable ASRC Curtis Malainey
2019-11-06  1:13 ` [alsa-devel] [PATCH v3 11/11] ASoC: rt5677: Wait for DSP to boot before loading firmware Curtis Malainey

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