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ARM: dts: imx7d-sdb: Add GPIO expander node

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Add node for U38, a 74LV595PW serial-in shift register that acts as a
GPIO expander on the board.

Cc: yurovsky@gmail.com
Cc: Dong Aisheng <aisheng.dong@nxp.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Andrey Smirnov 2017-05-15 07:53:03 -07:00 committed by Shawn Guo
parent 9760c06bc2
commit 184f39b57c
1 changed files with 29 additions and 0 deletions
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29
arch/arm/boot/dts/imx7d-sdb.dts
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@ -52,6 +52,27 @@ memory {
reg = <0x80000000 0x80000000>;
};
spi4 {
compatible = "spi-gpio";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_spi4>;
gpio-sck = <&gpio1 13 GPIO_ACTIVE_HIGH>;
gpio-mosi = <&gpio1 9 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>;
num-chipselects = <1>;
#address-cells = <1>;
#size-cells = <0>;
extended_io: gpio-expander@0 {
compatible = "fairchild,74hc595";
gpio-controller;
#gpio-cells = <2>;
reg = <0>;
registers-number = <1>;
spi-max-frequency = <100000>;
};
};
regulators {
compatible = "simple-bus";
#address-cells = <1>;
@ -642,5 +663,13 @@ pinctrl_pwm1: pwm1grp {
fsl,pins = <
MX7D_PAD_LPSR_GPIO1_IO01__PWM1_OUT 0x110b0
>;
pinctrl_spi4: spi4grp {
fsl,pins = <
MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x59
MX7D_PAD_GPIO1_IO12__GPIO1_IO12 0x59
MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x59
>;
};
};
};