bindings/tpm/tcg%2Ctpm_tis-spi.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/tpm/tcg,tpm_tis-spi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: SPI-attached Trusted Platform Module conforming to TCG TIS specification
10   - Lukas Wunner <lukas@wunner.de>
13   The Trusted Computing Group (TCG) has defined a multi-vendor standard
15   one of them being SPI.  The standard is named:
17 …tps://trustedcomputinggroup.org/resource/pc-client-work-group-pc-client-specific-tpm-interface-spe…
22       - enum:
23           - infineon,slb9670
24           - st,st33htpm-spi
25           - st,st33zp24-spi
26       - const: tcg,tpm_tis-spi
29   - $ref: tpm-common.yaml#
30   - $ref: /schemas/spi/spi-peripheral-props.yaml#
31   - if:
35             const: st,st33zp24-spi
38         spi-max-frequency:
42   - compatible
43   - reg
48   - |
49     spi {
50         #address-cells = <1>;
51         #size-cells = <0>;
55             compatible = "infineon,slb9670", "tcg,tpm_tis-spi";
56             spi-max-frequency = <10000000>;
60   - |
61     #include <dt-bindings/gpio/gpio.h>
62     #include <dt-bindings/interrupt-controller/irq.h>
63     spi {
64         #address-cells = <1>;
65         #size-cells = <0>;
69             compatible = "st,st33zp24-spi", "tcg,tpm_tis-spi";
70             spi-max-frequency = <10000000>;
71             interrupt-parent = <&gpio5>;
73             lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>;