From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anson.Huang@nxp.com (Anson Huang) Date: Sun, 6 May 2018 14:28:09 +0800 Subject: [PATCH V7 3/7] ARM: dts: imx6sx-sabreauto: add IO expander max7310 support In-Reply-To: <1525588093-29994-1-git-send-email-Anson.Huang@nxp.com> References: <1525588093-29994-1-git-send-email-Anson.Huang@nxp.com> Message-ID: <1525588093-29994-3-git-send-email-Anson.Huang@nxp.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org i.MX6SX Sabre Auto board has two max7310 IO expander on I2C3 bus, add support for them. Signed-off-by: Anson Huang --- changes since V6: remove unnecessary sign-off. arch/arm/boot/dts/imx6sx-sabreauto.dts | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm/boot/dts/imx6sx-sabreauto.dts b/arch/arm/boot/dts/imx6sx-sabreauto.dts index ae253af..4d41b4d 100644 --- a/arch/arm/boot/dts/imx6sx-sabreauto.dts +++ b/arch/arm/boot/dts/imx6sx-sabreauto.dts @@ -73,6 +73,13 @@ >; }; + pinctrl_i2c3: i2c3grp { + fsl,pins = < + MX6SX_PAD_KEY_ROW4__I2C3_SDA 0x4001b8b1 + MX6SX_PAD_KEY_COL4__I2C3_SCL 0x4001b8b1 + >; + }; + pinctrl_uart1: uart1grp { fsl,pins = < MX6SX_PAD_GPIO1_IO04__UART1_TX 0x1b0b1 @@ -262,3 +269,24 @@ #gpio-cells = <2>; }; }; + +&i2c3 { + clock-frequency = <100000>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_i2c3>; + status = "okay"; + + max7310_a: gpio at 30 { + compatible = "maxim,max7310"; + reg = <0x30>; + gpio-controller; + #gpio-cells = <2>; + }; + + max7310_b: gpio at 32 { + compatible = "maxim,max7310"; + reg = <0x32>; + gpio-controller; + #gpio-cells = <2>; + }; +}; -- 2.7.4