arm64: dts: ti: k3-am642-phyboard-electra: Add TPM support

The phyBOARD-Electra populates a TPM module on SPI0 bus.
Add support for the Infineon SLB9670 TPM module.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Link: https://lore.kernel.org/r/20240123102921.1348777-1-w.egorov@phytec.de
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
index 53b64e5..8a518a8 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
@@ -159,6 +159,15 @@
                >;
        };
 
+       main_spi0_pins_default: main-spi0-default-pins {
+               pinctrl-single,pins = <
+                       AM64X_IOPAD(0x020c, PIN_OUTPUT, 7)      /* (C13) SPI0_CS1.GPIO1_43 */
+                       AM64X_IOPAD(0x0210, PIN_INPUT, 0)       /* (D13) SPI0_CLK */
+                       AM64X_IOPAD(0x0214, PIN_OUTPUT, 0)      /* (A13) SPI0_D0 */
+                       AM64X_IOPAD(0x0218, PIN_INPUT, 0)       /* (A14) SPI0_D1 */
+               >;
+       };
+
        main_uart0_pins_default: main-uart0-default-pins {
                pinctrl-single,pins = <
                        AM64X_IOPAD(0x0230, PIN_INPUT, 0)       /* (D15) UART0_RXD */
@@ -248,6 +257,20 @@
        phys = <&can_tc2>;
 };
 
+&main_spi0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&main_spi0_pins_default>;
+       cs-gpios = <0>, <&main_gpio1 43 GPIO_ACTIVE_LOW>;
+       ti,pindir-d0-out-d1-in;
+
+       tpm@1 {
+               compatible = "infineon,slb9670", "tcg,tpm_tis-spi";
+               reg = <1>;
+               spi-max-frequency = <10000000>;
+       };
+};
+
 &main_uart0 {
        status = "okay";
        pinctrl-names = "default";