Hi,
I'm new to yocto projects. I'm having an LS1021A-IOT Board rev1, and yocto sdk v1.8. The UART1 in the board is working properly while using the default RCW.
| 00000000: 0608000a 00000000 00000000 00000000 |
| 00000010: 20000000 08407900 60025a00 21046000 |
| 00000020: 00000000 00000000 00000000 00038000 |
| 00000030: 20024800 881b1340 00000000 00000000 |
I've edited the RCW to enable LPUART1 as
| 00000000: 0608000a 00000000 00000000 00000000 |
| 00000010: 20000000 08407900 60025a00 21046000 |
| 00000020: 00000000 00000000 00000000 10038000 |
| 00000030: 20024800 881b1340 00000000 00000000 |
While using the modified RCW in our board, we are not getting u-boot as well as filesystem console in UART1, but kernel prints are getting. I've also probed the 1st and 2nd (LPUART1 SIN & SOUT) pin in J17 connector, but I didn't notice any deflection. Can you please help me to solve this problem?
LPUART1 support is enabled in the device tree source
in ls1021a.dtsi,
| | lpuart0: serial@2950000 { |
| | | compatible = "fsl,ls1021a-lpuart"; |
| | | reg = <0x2950000 0x1000>; |
| | | interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>; |
| | | clocks = <&sysclk>; |
| | | clock-names = "ipg"; |
| | | status = "disabled"; |
| | }; |
and in ls1021a-iot.dts file as
&lpuart0 {
status = "okay";
};
