The patch
ASoC: rt5645: Wait for 400msec before concluding on value of RT5645_VENDOR_ID2
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
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Thanks, Mark
From 0c279a590fde66f4307c93ab2d4f680c7f41bbfa Mon Sep 17 00:00:00 2001
From: Akshu Agrawal akshu.agrawal@amd.com Date: Thu, 9 Nov 2017 12:35:51 -0500 Subject: [PATCH] ASoC: rt5645: Wait for 400msec before concluding on value of RT5645_VENDOR_ID2
Minimum time required between power On of codec and read of RT5645_VENDOR_ID2 is 400msec. We should wait that long before reading the value.
TEST=Cold boot the device and check for sound device.
Signed-off-by: Akshu Agrawal akshu.agrawal@amd.com Signed-off-by: Bard Liao bardliao@realtek.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/rt5645.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c index 23cc2cb8393f..5f24df4fae8e 100644 --- a/sound/soc/codecs/rt5645.c +++ b/sound/soc/codecs/rt5645.c @@ -55,6 +55,8 @@ MODULE_PARM_DESC(quirk, "RT5645 pdata quirk override");
#define RT5645_HWEQ_NUM 57
+#define TIME_TO_POWER_MS 400 + static const struct regmap_range_cfg rt5645_ranges[] = { { .name = "PR", @@ -3784,6 +3786,12 @@ static int rt5645_i2c_probe(struct i2c_client *i2c, ret); return ret; } + + /* + * Read after 400msec, as it is the interval required between + * read and power On. + */ + msleep(TIME_TO_POWER_MS); regmap_read(regmap, RT5645_VENDOR_ID2, &val);
switch (val) {