Hi,

 

I have question about ports /dev/ttyAML1 and /dev/ttyAML2 (device Odroid C2, Image Buster)

I dont see in dmesg the ports /dev/ttyAML1 and /dev/ttyAML2

[    0.000256] printk: console [tty1] enabled
[    1.877506] c81004c0.serial: ttyAML0 at MMIO 0xc81004c0 (irq = 13, base_baud = 1500000) is a meson_uart
[    1.877549] printk: console [ttyAML0] enabled
[    3.452296] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    3.455230] systemd[1]: Created slice system-getty.slice.
[    4.257715] cdc_acm 1-1.4:1.0: ttyACM0: USB ACM device
 

overlays=i2cA i2cB uartA uartB uartC w1-gpio

 

How should i chnage the meson-gxbb-odroidc2.dtb to working configuration with kernel 5.4.27-meson64 

This is actual configuration:

            serial@84c0 {
                compatible = "amlogic,meson-gx-uart";
                reg = < 0x00 0x84c0 0x00 0x18 >;
                interrupts = < 0x00 0x1a 0x01 >;
                status = "disabled";
                clocks = < 0x0e 0x03 0x1a 0x0e >;
                clock-names = "xtal\0pclk\0baud";
                pinctrl-0 = < 0x0f >;
                pinctrl-names = "default";
                phandle = < 0x47 >;
            };

 

With kernel 4.19.69 was working with following change in meson-gxbb-odroidc2.dtb

            serial@84c0 {
                compatible = "amlogic,meson-gx-uart";
                reg = < 0x00 0x84c0 0x00 0x18 >;
                interrupts = < 0x00 0x1a 0x01 >;
                status = "disabled";
                clocks = < 0x0d 0x0b 0x1a 0x0d >;
                clock-names = "xtal\0pclk\0baud";
                pinctrl-names = "default";
                pinctrl-0 = < 0x72 >;
                phandle = < 0x43 >;
            };

 

Thanks for help

Bump.

 

Did you find an overlay for ttyAML1 for your Odroid C2? I need to write one for the N2.