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Wed, 12 May 2021 08:46:08 -0700 (PDT) Subject: Re: [PATCH v21 3/5] i2c: mediatek: mt65xx: add optional vbus-supply To: Hsin-Yi Wang , Wolfram Sang , Rob Herring , Bartosz Golaszewski Cc: linux-i2c@vger.kernel.org, Qii Wang , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Mark Brown , Marek Szyprowski , Bibby Hsieh , Arnd Bergmann References: <20210507131406.2224177-1-hsinyi@chromium.org> <20210507131406.2224177-4-hsinyi@chromium.org> From: Matthias Brugger Message-ID: <6e971f16-a325-34cd-faaa-cfd51db86c66@gmail.com> Date: Wed, 12 May 2021 17:46:07 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <20210507131406.2224177-4-hsinyi@chromium.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210512_084610_680406_04C14CB0 X-CRM114-Status: GOOD ( 19.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Reviewed-by: Matthias Brugger > --- > 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) > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel