martint Posted March 24, 2020 Share Posted March 24, 2020 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 0 Quote Link to comment Share on other sites More sharing options...
rob Posted July 24, 2020 Share Posted July 24, 2020 Bump. Did you find an overlay for ttyAML1 for your Odroid C2? I need to write one for the N2. 0 Quote Link to comment Share on other sites More sharing options...
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