Re: [PATCH v21 3/5] i2c: mediatek: mt65xx: add optional vbus-supply
From: Matthias Brugger <matthias.bgg@gmail.com>
Date: 2021-05-12 17:39:28
Also in:
linux-arm-kernel, linux-i2c, linux-mediatek, lkml
On 07/05/2021 15:14, Hsin-Yi Wang wrote:
Add vbus-supply which provides power to SCL/SDA. Pass this regulator into core so it can be turned on/off for low power mode support. Signed-off-by: Hsin-Yi Wang <redacted>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
quoted hunk ↗ jump to hunk
--- drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ 1 file changed, 7 insertions(+)diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 5ddfa4e56ee2..22d1d14b5de5 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c@@ -1220,6 +1220,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) i2c->adap.quirks = i2c->dev_comp->quirks; i2c->adap.timeout = 2 * HZ; i2c->adap.retries = 1; + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); + if (IS_ERR(i2c->adap.bus_regulator)) { + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) + i2c->adap.bus_regulator = NULL; + else + return PTR_ERR(i2c->adap.bus_regulator); + } ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); if (ret)