No signal out throgh /dev/spidev1.0 or /dev/spidev1.1 for BeagleboneAI

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Jul 22, 2020, 7:43:41 AM7/22/20

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I create and find /dev/spidev1.0 and /dev/spidev1.1.

But I noticed that the signals spi clk(P9.31), do(P9.30), di(p9.29), cs0(P9.28) or gpio7 (P9.23)(spi_cs1) did not go out at all.

Likewise, the signals P9.22, P9.21, P9.18, and P9.17 do not move at all.

Is it possible to control signals through header pins of spi clk, spi do, spi di, and spi cs via /dev/spidev1.0 or /dev/spidev1.1?

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