Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-29 14:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

regulator: slg51000: Wait after asserting CS pin

Browse Source 
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>
This commit is contained in:
Konrad Dybcio 2022-11-18 14:10:35 +01:00 committed by Mark Brown
parent 1f386d6894
commit 0b24dfa587
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/regulator/slg51000-regulator.c
View File

@ -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;