imx233: add pinctrl debug code to track pin uses

Past development has proved that one can mistakely use
the same pin for two uses without noticing. Since this
causes extremely hard to find bugs, the infrastructure
will allow to register pin uses and panic when a conflict
is detected. The pinctrl debug now shows the pin uses
when its support is compiled in.

Change-Id: Idb2d5235ce09207d77aa474d6f158e72b933761a

1 files changed, 1 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/power-imx233.c b/firmware/target/arm/imx233/power-imx233.c
index 2ae7ff653c..be12207793 100644
--- a/firmware/target/arm/imx233/power-imx233.c
+++ b/firmware/target/arm/imx233/power-imx233.c
@@ -114,6 +114,7 @@ void power_off(void)
     sleep(HZ / 2);
 #ifdef SANSA_FUZEPLUS
     /* This pin seems to be important to shutdown the hardware properly */
+    imx233_pinctrl_acquire_pin(0, 9, "power off");
     imx233_set_pin_function(0, 9, PINCTRL_FUNCTION_GPIO);
     imx233_enable_gpio_output(0, 9, true);
     imx233_set_gpio_output(0, 9, true);