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ARM: dts: vf610-bk4: Provide support for reading ID code from MVB device 

The procedure to read this ID value is as follows:

rmmod spi_fsl_dspi
insmod spi-gpio.ko

echo 504 > /sys/class/gpio/export
cat /sys/class/gpio/gpio504/value
...
echo 511 > /sys/class/gpio/export
cat /sys/class/gpio/gpio511/value

rmmod spi-gpio.ko
insmod spi_fsl_dspi

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Lukasz Majewski 2018-12-09 22:50:56 +01:00 committed by Shawn Guo
parent 65441e1ffc
commit cf91ce9696
1 changed files with 31 additions and 0 deletions
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31
arch/arm/boot/dts/vf610-bk4.dts
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@ -60,6 +60,29 @@
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
spi-gpio {
compatible = "spi-gpio";
pinctrl-0 = <&pinctrl_gpio_spi>;
pinctrl-names = "default";
#address-cells = <1>;
#size-cells = <0>;
/* PTD12 ->RPIO[91] */
sck-gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
/* PTD10 ->RPIO[89] */
miso-gpios = <&gpio2 25 GPIO_ACTIVE_HIGH>;
num-chipselects = <0>;
gpio@0 {
compatible = "pisosr-gpio";
reg = <0>;
gpio-controller;
#gpio-cells = <2>;
/* PTB18 -> RGPIO[40] */
load-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
spi-max-frequency = <100000>;
};
};
};
&adc0 {
@ -431,6 +454,14 @@
>;
};
pinctrl_gpio_spi: pinctrl-gpio-spi {
fsl,pins = <
VF610_PAD_PTB18__GPIO_40 0x1183
VF610_PAD_PTD10__GPIO_89 0x1183
VF610_PAD_PTD12__GPIO_91 0x1183
>;
};
pinctrl_i2c2: i2c2grp {
fsl,pins = <
VF610_PAD_PTA22__I2C2_SCL 0x34df