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, 2 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c b/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c
index 417f70e406..ee63cd35f6 100644
--- a/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c
+++ b/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c
@@ -87,6 +87,8 @@ struct i2c_interface fmradio_i2c =
 
 void fmradio_i2c_init(void)
 {
+    imx233_pinctrl_acquire_pin(1, 24, "fmradio i2c");
+    imx233_pinctrl_acquire_pin(1, 22, "fmradio i2c");
     imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_GPIO);
     imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_GPIO);
     fmradio_i2c_bus = i2c_add_node(&fmradio_i2c);