diff options
| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2022-11-18 14:10:35 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-11-18 14:02:11 +0000 |
| commit | 0b24dfa587c6cc7484cfb170da5c7dd73451f670 (patch) | |
| tree | faf0e6071317479317455dcfdebda2ffebbe8342 /drivers/regulator/slg51000-regulator.c | |
| parent | 1f386d6894d0f1b7de8ef640c41622ddd698e7ab (diff) | |
regulator: slg51000: Wait after asserting CS pin
Sony's downstream driver [1], among some other changes, adds a
seemingly random 10ms usleep_range, which turned out to be necessary
for the hardware to function properly on at least Sony Xperia 1 IV.
Without this, I2C transactions with the SLG51000 straight up fail.
Relax (10-10ms -> 10-11ms) and add the aforementioned sleep to make
sure the hardware has some time to wake up.
(nagara-2.0.0-mlc/vendor/semc/hardware/camera-kernel-module/)
[1] https://developer.sony.com/file/download/open-source-archive-for-64-0-m-4-29/
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20221118131035.54874-1-konrad.dybcio@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/slg51000-regulator.c')
| -rw-r--r-- | drivers/regulator/slg51000-regulator.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/regulator/slg51000-regulator.c b/drivers/regulator/slg51000-regulator.c index 75a941fb3c2b..1b2eee95ad3f 100644 --- a/drivers/regulator/slg51000-regulator.c +++ b/drivers/regulator/slg51000-regulator.c @@ -457,6 +457,8 @@ static int slg51000_i2c_probe(struct i2c_client *client) chip->cs_gpiod = cs_gpiod; } + usleep_range(10000, 11000); + i2c_set_clientdata(client, chip); chip->chip_irq = client->irq; chip->dev = dev; |