On 06.09.2016 19:15, Stephen Warren wrote:
diff --git a/board/avionic-design/common/meerkat.c b/board/avionic-design/common/meerkat.c
+void pinmux_init(void) +{
- pinmux_set_tristate_input_clamping();
That should be pinmux_clear_tristate_input_clamping();
gpio_config_table() is missing here.
I checked back our internal history. In fact we had this first (starting from Jetson TK1 as base), but later on removed it. The reason for removing it, was the assumption that whenever a driver wants to use a GPIO it will request it anyway, so that it will be confiured correctly. As this init code is generic for our SoM there is no predefined functionality for certain GPIOs which would make sense to preinit in the bootloader. In fact we even had some issues when the init was there because customers did not expect the pin to be a GPIO and wondered why a certain special function did not work as expected.
Do you see any other reason why a gpio init would be really needed here?
-Julian