From patchwork Mon Jan 27 17:52:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vignesh Raghavendra X-Patchwork-Id: 240323 List-Id: U-Boot discussion From: vigneshr at ti.com (Vignesh Raghavendra) Date: Mon, 27 Jan 2020 23:22:14 +0530 Subject: [PATCH 2/4] arm: dts: k3-j721e-common-proc-board: Add I2C GPIO expander In-Reply-To: <20200127175216.10380-1-vigneshr@ti.com> References: <20200127175216.10380-1-vigneshr@ti.com> Message-ID: <20200127175216.10380-3-vigneshr@ti.com> Add I2C GPIO expander required to power cycle MMC/SD Signed-off-by: Vignesh Raghavendra --- arch/arm/dts/k3-j721e-common-proc-board.dts | 27 +++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/arch/arm/dts/k3-j721e-common-proc-board.dts b/arch/arm/dts/k3-j721e-common-proc-board.dts index f33a6d5bcff5..d216b707fd2c 100644 --- a/arch/arm/dts/k3-j721e-common-proc-board.dts +++ b/arch/arm/dts/k3-j721e-common-proc-board.dts @@ -107,6 +107,13 @@ J721E_IOPAD(0x214, PIN_OUTPUT, 4) /* (V4) MCAN1_TX.USB1_DRVVBUS */ >; }; + + main_i2c0_pins_default: main-i2c0-pins-default { + pinctrl-single,pins = < + J721E_IOPAD(0x220, PIN_INPUT_PULLUP, 0) /* (AC5) I2C0_SCL */ + J721E_IOPAD(0x224, PIN_INPUT_PULLUP, 0) /* (AA5) I2C0_SDA */ + >; + }; }; &wkup_pmx0 { @@ -145,3 +152,23 @@ pinctrl-0 = <&wkup_i2c0_pins_default>; clock-frequency = <400000>; }; + +&main_i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&main_i2c0_pins_default>; + clock-frequency = <400000>; + + exp1: gpio at 20 { + compatible = "ti,tca6416"; + reg = <0x20>; + gpio-controller; + #gpio-cells = <2>; + }; + + exp2: gpio at 22 { + compatible = "ti,tca6424"; + reg = <0x22>; + gpio-controller; + #gpio-cells = <2>; + }; +};