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> --- 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..f01c735807ae 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>; + + 72xx165@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