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/mmc-imx233.c b/firmware/target/arm/imx233/mmc-imx233.c
index 8782e8e8af..f4dab30bcc 100644
--- a/firmware/target/arm/imx233/mmc-imx233.c
+++ b/firmware/target/arm/imx233/mmc-imx233.c
@@ -63,6 +63,7 @@ int mmc_init(void)
     #ifdef SANSA_FUZEPLUS
     /** Sansa Fuze+ has an internal eMMC 8-bit wide flash, power gate is pin PWM3
      * and power up time is 20ms */
+    imx233_pinctrl_acquire_pin(1, 29, "emmc power");
     imx233_set_pin_function(1, 29, PINCTRL_FUNCTION_GPIO);
     imx233_enable_gpio_output(1, 29, true);
     imx233_set_gpio_output(1, 29, false);