From: Hsin-Yi Wang <hsinyi@chromium.org>
To: Wolfram Sang <wsa@kernel.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
linux-i2c@vger.kernel.org, Mark Brown <broonie@kernel.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
Bibby Hsieh <bibby.hsieh@mediatek.com>,
Rob Herring <robh+dt@kernel.org>,
Marek Szyprowski <m.szyprowski@samsung.com>
Subject: [PATCH v17 3/3] i2c: mediatek: mt65xx: add optional vbus-supply
Date: Tue, 9 Mar 2021 21:31:31 +0800 [thread overview]
Message-ID: <20210309133131.1585838-4-hsinyi@chromium.org> (raw)
In-Reply-To: <20210309133131.1585838-1-hsinyi@chromium.org>
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 <hsinyi@chromium.org>
---
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 2ffd2f354d0a..82f2b6716005 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -1215,6 +1215,13 @@ 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)
--
2.30.1.766.gb4fecdf3b7-goog
prev parent reply other threads:[~2021-03-09 13:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 13:31 [PATCH v17 0/3] add power control in i2c Hsin-Yi Wang
2021-03-09 13:31 ` [PATCH v17 1/3] i2c: core: support bus regulator controlling in adapter Hsin-Yi Wang
2021-03-09 13:31 ` [PATCH v17 2/3] dt-binding: i2c: mt65xx: add vbus-supply property Hsin-Yi Wang
2021-03-09 13:31 ` Hsin-Yi Wang [this message]
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