About using spi on Jetson NANO

Looks like the those pin enable as GPIO pin.
Did you using r32.6.1? This version should have problem or didn’t you add those pin under the gpio@6000d000? Remove the TEGRA_GPIO B an B to try

	gpio: gpio@6000d000 {
		gpio-init-names = "default";
		gpio-init-0 = <&gpio_default>;

		gpio_default: default {
			gpio-input = <
				TEGRA_GPIO(BB, 0)
				TEGRA_GPIO(B, 4)
				TEGRA_GPIO(B, 5)
				TEGRA_GPIO(B, 6)
				TEGRA_GPIO(B, 7)
				TEGRA_GPIO(DD, 0)
				TEGRA_GPIO(E, 6)
				TEGRA_GPIO(S, 5)
...
...				TEGRA_GPIO(C, 0)
				TEGRA_GPIO(C, 1)
				TEGRA_GPIO(C, 2)
				TEGRA_GPIO(C, 3)
				TEGRA_GPIO(C, 4)