Can you just send a patch to the Armada DTS file adding these ranges?
I looked at some other November/December-ish commits into the DT, and in
the end, this is the patch that I needed to add to my board-specific DTS:
/ {
gpio_i2c {
compatible = "i2c-gpio";
sda-gpios = <&gpio0 25 (GPIO_ACTIVE_HIGH |
GPIO_OPEN_DRAIN)>;
scl-gpios = <&gpio0 24 (GPIO_ACTIVE_HIGH |
GPIO_OPEN_DRAIN)>;
i2c-gpio.delay-us = <1>;
#address-cells = <1>;
#size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins_i2c_bb>;
};
};
-&uart1_pins {
+&pinctrl {
+ uart1_pins_i2c_bb: uart1-pins-i2c-bb {
+ marvell,pins = "mpp24", "mpp25";
+ marvell,function = "gpio";
+ };
+};
+
+&mikro_uart_pins {
status = "disabled";
};
The missing bit was making sure that the "i2c-gpio" instantiation sees a
correct pinctrl-names and pinctrl-0 properties.
I think there's probably nothing to fix upstream here; I think it could be
considered common knowledge than one has to patch the pinctrl block in DT
in order to re-purpose a set of pins from, say, UART to GPIO. What confused
me is that pre-5.7, this used to work without setting the pinctrl to "gpio"
explicitly.
With kind regards,
Jan
