p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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>
This commit is contained in:
Akshu Agrawal 2017-11-09 12:35:51 -05:00 committed by Mark Brown
parent 50f510a33c
commit 0c279a590f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sound/soc/codecs/rt5645.c
View File

@ -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) {