AM5728: Add entry in device for Custom AM5728 Board

Hello Hanmant, 

Will look into this and respond by the end of the week.

-Josue

Hi Josue,

Yes , sure.

I have added this below way but it is not working 

serial8: serial@48422000 /* rs485 */
{
compatible = "ti,am5-uart";
reg = <0x48422000 0x1000>;
interrupts = <0 219 4>;
clocks = <&uart8_gfclk_mux>;
clock-names = "uart8_gfclk_mux";
pinmux-0 = <&uart8_pads>;
};

uart8_pads: uart8pads /* for rs485 */
{
pin-set = <
0x1458 0x40007 /* rxd */
0x145C 0x40007
>;
};

Thank you for your understanding.

-Josue

Hi Josue,

I'm waiting for your response.

Thanks.

Hello Hanmant,

Please see the following links for guidance: 
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/Documentation/devicetree/bindings/serial/serial.yaml?h=ti-linux-6.1.y

The pinmux  for AM57 can be done using Sysconfig, for AM57 it is not recommended to do this on the DTS. See existing dts files for examples:

https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/arch/arm/boot/dts/dra7.dtsi?h=ti-linux-6.1.y

Best,

Josue

I checked all setting are good but still I don't see any exchange on this uart8? Can confirm me whatever I did configuration in dts file is correct or not for uart8?

Hello Hanmant,

See the entry for our boards here --> https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/arch/arm/boot/dts/dra7-l4.dtsi?h=ti-linux-6.1.y#n2456

And also make sure you double check the the pinmuxing that is usually done on a separate file:

${SDK_INSTALL_DIR}\board_support\u-boot-*\board\ti\am57xx\mux_data.h

Read more info 

https://software-dl.ti.com/processor-sdk-linux/esd/AM57X/09_02_00_133/exports/docs/linux/Foundational_Components/Tools/Pin_Mux_Tools.html

-Josue

Hello Josue ,

I want to add these things in VxWorks kernel side .

do you thing this is useful for me because  im using " am5-uart" also i dont see any address for uart8(0x48422000) rs-485 .

This is you suggested.

	uart8: serial@0 {
				compatible = "ti,dra742-uart";
				reg = <0x0 0x100>;
				interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>;
				clock-frequency = <48000000>;
				status = "disabled";
			};

Hi Josue,

These are the pimux configuration:

const struct pad_conf_entry core_padconf_array_essential_am572x_idk[] = {

{GPMC_A6, (M7 | PIN_INPUT)}, /* R5 gpmc_a6.uart8_rxd */
{GPMC_A7, (M7 | PIN_OUTPUT)}, /* P5 gpmc_a7.uart8_txd */

}

confirm me this pinmux is right or not?

Hi Josue,

Thanks for confirming.

Can you help me with this , I want change default uart3 debug console serial port to uart8 in u-boot source .

So what changes i need to change in source code nd in which files those?

Is it possible to cross same uart8 on TI AM572x Industrial Development Kit ? If yes then please guide me.

Hello Hanmant, 

I am out of office on work related training so please expect delays in response. 

I am unable to guide you in using non-TI software on a custom board. 

Hanmant Gaikwad said:

Is it possible to cross same uart8 on TI AM572x Industrial Development Kit ? If yes then please guide me

Can you explain what you mean by the above statement?

-Josue

I want to cross check this uart8 on TI AM572x Industrial Development Kit.it is Just for debugging purpose.

Can You Confirm me this uart8 node and its property:

uart8: serial@48422000 /* rs485 */
{
compatible = "ti,am5-uart";
reg = <0x48422000 0x100>;
interrupts = <219 0 4>;
clocks = <&uart8_gfclk_mux>;
clock-names = "uart8_gfclk_mux";
pinmux-0 = <&uart8_pads>;
};
uart8_pads: uart8pads /* for rs485 */
{
pin-set = <
0x1458 0x40007 /* rxd */
0x145C 0x40007
>;
};

Hi Josue,

Still this issue is not resolved.

do you have any idea?

Josue Zamitiz-Ayala said:

I apologize Hanmant, but what you are doing is not supported by TI at this moment, please reach out to Wind River or the Open source community for further support.