[PATCH v21 3/5] i2c: mediatek: mt65xx: add optional vbus-supply
From: Hsin-Yi Wang <hidden>
Date: 2021-05-07 13:14:35
Also in:
linux-arm-kernel, linux-devicetree, linux-i2c, lkml
Subsystem:
i2c subsystem, i2c subsystem host drivers, mediatek i2c controller driver, the rest · Maintainers:
Andi Shyti, Qii Wang, Linus Torvalds
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> --- 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)
--
2.31.1.607.g51e8a6a459-goog
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