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@xxxxxxx>
---
Changes for v2:
- Add 'vf610-bk4:' to mail topic
- Change spi_gpio -> spi-gpio node name
- Change '72xx165' -> 'gpio' as described in
Documentation/devicetree/bindings/gpio/gpio-pisosr.txt
---
arch/arm/boot/dts/vf610-bk4.dts | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm/boot/dts/vf610-bk4.dts b/arch/arm/boot/dts/vf610-bk4.dts
index cab95714c058..c59a8922ccd5 100644
--- a/arch/arm/boot/dts/vf610-bk4.dts
+++ b/arch/arm/boot/dts/vf610-bk4.dts
@@ -59,6 +59,29 @@
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 {
@@ -430,6 +453,14 @@
>;
};
+ 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
--
2.11.0
