Slb9672 can't work in the Jetpack5.1.2

[kgarnet999]

Hi All

I try to porting TPM2.0 slb9672 to orin nx customer board,but it show error “probe of spi2.0 failed with error -110”. Has anyone had experience using the SLB9672?"

blue:cs0 yellow:mosi green:clk miso: can’t detect single.

The following is my device tree and Kconfig setting

spi@3230000 {

	cs-gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(Y, 3) GPIO_ACTIVE_LOW>;
	slb9670: slb9670@0{
			
	//compatible = "infineon,slb9670";
	compatible = "infineon,slb9670", "tis,tpm2-spi", "tcg,tpm_tis-spi", "infineon,slb9672";
	reg = <0x00>;
	spi-max-frequency = <32000000>;
	status = "okay";
	//reset-gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(Y, 3) 0>;
	cs-gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(Y, 3) GPIO_ACTIVE_LOW>;

	controller-data {
			nvidia,enable-hw-based-cs;
			nvidia,rx-clk-tap-delay = <0x10>;
			nvidia,tx-clk-tap-delay = <0x0>;
		};
	};

};

CONFIG_TCG_TPM=y

TPM features

HW_RANDOM_TPM should be y, since it is not valid to use ‘m’

CONFIG_HW_RANDOM_TPM=y
CONFIG_TCG_TIS_CORE=m
CONFIG_TCG_TIS_SPI=m
CONFIG_TCG_FTPM_TEE=m

[KevinFFF]

Hi kgarnet999,

Have you verified with the latest JP5.1.4(R35.6.0)?

Or verified the SPI loopback test before porting TPM module.

@kgarnet999

probe of spi2.0 failed with error -110

Please share the full dmesg for further check.
The error looks like something failed during probing the driver.
You can try to add more logs to debug.

[kgarnet999]

Hi KevinFFF

感謝你的回答我的slb9670已經可以動了,另外再問個問題我如果想把gpio 設成斷路等同於沒有接做的到嗎? 我pinmux 該怎麼改? 因為我現在電路 slb9670 所有腳位都有拉出來到我的Nvidia SOM,我想試試看哪些gpio 可以省略 未來做改版.

[KevinFFF]

You can just configure the unused pins as Input/Z in pinmux spreadsheet.