The SN65HVS882 is available on the AM437x IDK and is attached to SPI1.
Input is attached to the I/O header.
Signed-off-by: Andrew F. Davis <afd@xxxxxx>
Reviewed-by: Roger Quadros <rogerq@xxxxxx>
Signed-off-by: Sekhar Nori <nsekhar@xxxxxx>
---
arch/arm/boot/dts/am437x-idk-evm.dts | 42 ++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts b/arch/arm/boot/dts/am437x-idk-evm.dts
index 25ce611..fff7ef6 100644
--- a/arch/arm/boot/dts/am437x-idk-evm.dts
+++ b/arch/arm/boot/dts/am437x-idk-evm.dts
@@ -178,6 +178,24 @@
>;
};
+ spi1_pins_default: spi1_pins_default {
+ pinctrl-single,pins = <
+ AM4372_IOPAD(0x908, PIN_INPUT | MUX_MODE2) /* mii1_col.spi1_sclk */
+ AM4372_IOPAD(0x910, PIN_INPUT | MUX_MODE2) /* mii1_rx_er.spi1_d1 */
+ AM4372_IOPAD(0x944, PIN_OUTPUT | MUX_MODE2) /* rmii1_ref_clk.spi1_cs0 */
+ AM4372_IOPAD(0x90c, PIN_OUTPUT | MUX_MODE7) /* mii1_crs.gpio3_1 */
+ >;
+ };
+
+ spi1_pins_sleep: spi1_pins_sleep {
+ pinctrl-single,pins = <
+ AM4372_IOPAD(0x908, PIN_INPUT_PULLDOWN | MUX_MODE7)
+ AM4372_IOPAD(0x910, PIN_INPUT_PULLDOWN | MUX_MODE7)
+ AM4372_IOPAD(0x944, PIN_INPUT_PULLDOWN | MUX_MODE7)
+ AM4372_IOPAD(0x90c, PIN_INPUT_PULLDOWN | MUX_MODE7)
+ >;
+ };
+
ecap0_pins_default: backlight_pins_default {
pinctrl-single,pins = <
AM4372_IOPAD(0x964, PIN_OUTPUT | MUX_MODE0) /* ecap0_in_pwm0_out.ecap0_in_pwm0_out */
@@ -292,6 +310,26 @@
clock-frequency = <100000>;
};
+&spi1 {
+ status = "okay";
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&spi1_pins_default>;
+ pinctrl-1 = <&spi1_pins_sleep>;
+ ti,pindir-d0-out-d1-in;
+
+ sn65hvs882: sn65hvs882@0 {
+ compatible = "pisosr-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ load-gpios = <&gpio3 1 GPIO_ACTIVE_LOW>;
+
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+ };
+};
+
&epwmss0 {
status = "okay";
};
@@ -310,6 +348,10 @@
status = "okay";
};
+&gpio3 {
+ status = "okay";
+};
+
&gpio4 {
status = "okay";
};
--
2.10.0
--
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