Re: need help to configure IRQ on gpio 139 pandaboard using device tree

[Denis CIOCCA <denis.ciocca@st.com>]

Hi Nishant,

I've configured the device tree as you told me. Now, my device tree code 
is that:

diff --git a/arch/arm/boot/dts/omap4-panda-es.dts 
b/arch/arm/boot/dts/omap4-panda-es.dts
index 816d1c9..5644260 100644
--- a/arch/arm/boot/dts/omap4-panda-es.dts
+++ b/arch/arm/boot/dts/omap4-panda-es.dts
@@ -41,6 +41,12 @@
              0xb6 (PIN_OUTPUT | MUX_MODE3)    /* gpio_110 */
          >;
      };
+
+    lsm6db0_pins: lsm6db0_pins {
+        pinctrl-single,pins = <
+            0xfc (PIN_INPUT | MUX_MODE3) /* mcspi1_cs2.gpio_139 */
+        >;
+    };
  };

  &led_wkgpio_pins {
@@ -49,6 +55,22 @@
      >;
  };

+&i2c4 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&i2c4_pins>;
+
+    clock-frequency = <400000>;
+
+    lsm6db0@03 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&lsm6db0_pins>;
+        compatible = "st,lsm6db0";
+        reg = <0x03>;
+        interrupts = <139 0x1>;
+        interrupt-parent = <&lsm6db0_pins>;
+    };
+};
+
  &leds {
      pinctrl-0 = <
          &led_gpio_pins


I've also read the documentation file 
Documentation/devicetree/bindings/interrupt-controller/interrupts.txt 
but I'm confused about the gpio muxed with mcspi1.
Do you think my patch is correct?


Thanks,
Denis