TS-7250-V3 TS-SER4: Difference between revisions
From embeddedTS Manuals
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#address-cells = <0x1>; | #address-cells = <0x1>; | ||
#size-cells = <0x1>; | #size-cells = <0x1>; | ||
/* COMA */ | /* COMA */ | ||
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interrupt-parent = <&fpga_intc>; | interrupt-parent = <&fpga_intc>; | ||
interrupts = <15>; | interrupts = <15>; | ||
}; | }; | ||
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interrupt-parent = <&fpga_intc>; | interrupt-parent = <&fpga_intc>; | ||
interrupts = <15>; | interrupts = <15>; | ||
}; | }; | ||
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interrupt-parent = <&fpga_intc>; | interrupt-parent = <&fpga_intc>; | ||
interrupts = <15>; | interrupts = <15>; | ||
}; | }; | ||
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interrupt-parent = <&fpga_intc>; | interrupt-parent = <&fpga_intc>; | ||
interrupts = <15>; | interrupts = <15>; | ||
}; | }; | ||
}; | }; |
Revision as of 11:06, 10 May 2023
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8-bit IO |
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The TS-SER4 supports 4 UARTs as RS-232, RS-485, or RS-422. Refer to the TS-SER4 manual for hardware documentation.
The TS-SER4 implements 16550A based UARTs which require a kernel driver. Under Linux this requires a device tree change. See the Kernel compile section for more details about getting set up the compile the kernel.
This below example will set up the serial devices for a TS-SER4 with the IRQ2, IRQ4 (selects IRQ6), and COM1 jumpers installed. Open the device tree at arch/arm/boot/dts/imx6ul-ts7250v3.dts. Add the highlighted section to the device tree and recompile.
pc104bus: fpgaisa@50 {
compatible = "technologic,pc104-bus";
reg = <0x50 0x4>;
ranges = <0 0 0x1000>;
reset-gpio = <&gpio3 7 0>;
#address-cells = <0x1>;
#size-cells = <0x1>;
/* COMA */
ts16550@3f8 {
compatible = "technologic,ts16550";
reg = <0x3f8 8>;
interrupt-parent = <&fpga_intc>;
interrupts = <15>;
};
/* COMB */
ts16550@2f8 {
compatible = "technologic,ts16550";
reg = <0x2f8 8>;
interrupt-parent = <&fpga_intc>;
interrupts = <15>;
};
/* COMC */
ts16550@3e8 {
compatible = "technologic,ts16550";
reg = <0x3e8 8>;
interrupt-parent = <&fpga_intc>;
interrupts = <15>;
};
/* COMD */
ts16550@2e8 {
compatible = "technologic,ts16550";
reg = <0x2e8 8>;
interrupt-parent = <&fpga_intc>;
interrupts = <15>;
};
};
On the next boot check the "dmesg" output to verify it loaded:
root@tsimx6:~# dmesg | grep ts16550 [ 2.259413] ts16550 50004050.fpgaisa:ts16550@3f8: Adding 16550 UART ttyS0 [ 2.268166] ts16550 50004050.fpgaisa:ts16550@2f8: Adding 16550 UART ttyS1 [ 2.278539] ts16550 50004050.fpgaisa:ts16550@3e8: Adding 16550 UART ttyS2 [ 2.287455] ts16550 50004050.fpgaisa:ts16550@2e8: Adding 16550 UART ttyS3
Now that these are loaded:
Device | Description |
---|---|
/dev/ttyS0 | COMA |
/dev/ttyS1 | COMB |
/dev/ttyS3 | COMC |
/dev/ttyS4 | COMD |