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authorLukasz Majewski <lukma@denx.de>2018-12-10 00:50:56 +0300
committerShawn Guo <shawnguo@kernel.org>2019-01-10 16:21:44 +0300
commitcf91ce9696a019de74135b7a2ee21466c680ff4e (patch)
tree5fa0f1f3946c8e615d64bfe74f33b06c69797a7c /arch/arm/boot/dts/vf610-bk4.dts
parent65441e1ffc21b950d7bcb697e7cc2424fc14fa8d (diff)
downloadlinux-cf91ce9696a019de74135b7a2ee21466c680ff4e.tar.xz
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>
Diffstat (limited to 'arch/arm/boot/dts/vf610-bk4.dts')
-rw-r--r--arch/arm/boot/dts/vf610-bk4.dts31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/vf610-bk4.dts b/arch/arm/boot/dts/vf610-bk4.dts
index 689c8930dce3..fe496f220871 100644
--- a/arch/arm/boot/dts/vf610-bk4.dts
+++ b/arch/arm/boot/dts/vf610-bk4.dts
@@ -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