AM5728: Custom AM5728 SPI is not Working with Hilscher Board

Hanmant Gaikwad

Prodigy 90 points

Part Number: AM5728

Tool/software:

Hi All,

Custom Board - AM5728 based

I have interfaced Hilscher Board with my board using SPI.

I'm not able to get whatever output as i expected

Here is the dts file configuration:

mcspi2_pads: mcspi2pads
{
pin-set = <
0x17C0 0x00040000 /*( PIN_INPUT | MUX_MODE0 ) (A26) spi2_sclk */
0x17C4 0x00010000 /*( PIN_OUTPUT | MUX_MODE0 ) (B22) spi2_d1 MOSI*/
0x17C8 0x00050000 /*( PIN_INPUT | MUX_MODE0 ) (G17) spi2_d0 MISO */
0x17CC 0x00010000 /*( PIN_OUTPUT | MUX_MODE0 ) (B24) spi2_cs0 */
0x17B4 0x00010003 /*( PIN_OUTPUT | MUX_MODE0 ) (A22) spi2_cs1 */
>;
};

mcspi2@4809A000
{
#address-cells = <1>;
#size-cells = <1>;
compatible = "ti,am335x-spi";
clocks = <&mcspi2_clkctrl>;
reg = <0x4809A000 0x1000>;
interrupts = <61 0 4>;
pinmux-0 = <&mcspi2_pads>;
};

Is there anything am i missing.

Can any help me with this

2 days ago

0 Josue Zamitiz-Ayala 2 days ago

TI__Mastermind 21454 points

Hello Hanmant,

Can you share what SDK version you are using?

Please see the following E2E thread in case the information in it is helpful:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/496527/how-to-enable-mcspi-clk-in-kernel

There seems to be a couple of changes here that could help you out..

Best,

Josue

0 Hanmant Gaikwad 2 days ago in reply to Josue Zamitiz-Ayala

Prodigy 90 points

Hello Josue,

Thank for reply .

I have not changed anything on u-boot side only I changed in VxWorks device tree file pinmux configuration .

0 Josue Zamitiz-Ayala 1 day ago in reply to Hanmant Gaikwad

TI__Mastermind 21454 points

Hanmant,

Have you reached out to Wind River for support? TI only supports the TI SDKs and not the Wind River stack.

Anyhow. Let me know if you find the solution.

-Josue

0 Hanmant Gaikwad 1 day ago in reply to Josue Zamitiz-Ayala

Prodigy 90 points

Hello Josue,

Can you confirm whatever i configured pinmux is correct or not?

0 Hanmant Gaikwad 1 day ago in reply to Hanmant Gaikwad

Prodigy 90 points

Can you confirm me pad pinmux configuration for mspi1:

mcspi1_pads: mcspi1pads
{
pin-set = <
0x17A4 0x00040000 /*( PIN_INPUT | MUX_MODE0 ) (A25) spi1_sclk.spi1_sclk */
0x17A8 0x00010000 /*( PIN_OUTPUT | MUX_MODE0 ) (F16) spi1_d1.spi1_d1 MOSI*/
0x17AC 0x00050000 /*( PIN_INPUT | MUX_MODE0 ) (B25) spi1_d0.spi1_d0 MISO */
0x17B0 0x00010000 /*( PIN_OUTPUT | MUX_MODE0 ) (A24) spi1_cs0.spi1_cs0 */
>;
};

0 Josue Zamitiz-Ayala 1 day ago in reply to Hanmant Gaikwad

TI__Mastermind 21454 points

Hanmant,

I can't try this locally at the moment but on the thread I shared there was some differences, specifically with the pullup/pulldown options on the pinmux. I would encourage you to use our sysconfig tool and experiment on your side. You can also double check manually using the datasheet:

-Josue

0 Hanmant Gaikwad 1 day ago in reply to Josue Zamitiz-Ayala

Prodigy 90 points

Josue,

why it is showing like this:

/* PinMux automatically generated generic format file dump. */

/* register_address(hex) register_value(hex) ball_name(string) register_name(string) mux_mode0_name(string) muxed_mode_name(string) */

0x4A0037A4 0x50000 A25 CTRL_CORE_PAD_SPI1_SCLK spi1_sclk spi1_sclk
0x4A0037AC 0x00000 B25 CTRL_CORE_PAD_SPI1_D0 spi1_d0 spi1_d0
0x4A0037A8 0x00000 F16 CTRL_CORE_PAD_SPI1_D1 spi1_d1 spi1_d1
0x4A0037B0 0x10000 A24 CTRL_CORE_PAD_SPI1_CS0 spi1_cs0 spi1_cs0

im expecting

0x17A4 0x00040000 /*( PIN_INPUT | MUX_MODE0 ) (A25) spi1_sclk.spi1_sclk */
0x17A8 0x00010000 /*( PIN_OUTPUT | MUX_MODE0 ) (F16) spi1_d1.spi1_d1 MOSI*/
0x17AC 0x00050000 /*( PIN_INPUT | MUX_MODE0 ) (B25) spi1_d0.spi1_d0 MISO */
0x17B0 0x00010000 /*( PIN_OUTPUT | MUX_MODE0 ) (A24) spi1_cs0.spi1_cs0 */

0 Josue Zamitiz-Ayala 1 day ago in reply to Hanmant Gaikwad

TI__Mastermind 21454 points

Hanmant,

Long story short, pin-muxing in AM57x is not done in DTS, but in u-boot mux_data.h file.

See https://www.ti.com/lit/an/sprac44a/sprac44a.pdf, you need to use a perl scrip to convert this file to useful u-boot code.

-Josue

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AM5728: Custom AM5728 SPI is not Working with Hilscher Board