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Message-Id: <CXNEWTC7G66C.8KM5X4BWMK7P@suppilovahvero>
Date: Wed, 13 Dec 2023 20:20:20 +0200
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Ninad Palsule" <ninad@...ux.ibm.com>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<joel@....id.au>, <andrew@...econstruct.com.au>, <peterhuewe@....de>,
<jgg@...pe.ca>, <keescook@...omium.org>, <tony.luck@...el.com>,
<gpiccoli@...lia.com>, <johannes.holland@...ineon.com>,
<linux@...ck-us.net>, <broonie@...nel.org>
Cc: <patrick.rudolph@...ements.com>, <vincent@...emblay.dev>,
<peteryin.openbmc@...il.com>, <lakshmiy@...ibm.com>, <bhelgaas@...gle.com>,
<naresh.solanki@...ements.com>, <alexander.stein@...tq-group.com>,
<festevam@...x.de>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <linux-aspeed@...ts.ozlabs.org>,
<linux-kernel@...r.kernel.org>, <linux-integrity@...r.kernel.org>,
<linux-hardening@...r.kernel.org>, <geissonator@...oo.com>
Subject: Re: [PATCH v1 2/8] dt-bindings: tpm: Add schema for TIS I2C devices
On Tue Dec 12, 2023 at 6:39 PM EET, Ninad Palsule wrote:
> From: Johannes Holland <johannes.holland@...ineon.com>
>
> Add a dt schema to support device tree bindings for the generic I2C
> physical layer. Refer to the TCG PC Client Platform TPM Profile (PTP)
> Specification for TPM 2.0 v1.04 Revision 14.
>
> This includes descriptions for the Nuvoton and Infineon devices.
>
> OpenBMC-Staging-Count: 3
Please don't invent your own tags.
> Signed-off-by: Johannes Holland <johannes.holland@...ineon.com>
> Signed-off-by: Joel Stanley <joel@....id.au>
> Signed-off-by: Ninad Palsule <ninad@...ux.ibm.com>
> ---
> .../bindings/security/tpm/tpm-tis-i2c.yaml | 50 +++++++++++++++++++
> 1 file changed, 50 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml
>
> diff --git a/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml b/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml
> new file mode 100644
> index 000000000000..de1e34065748
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/security/tpm/tpm-tis-i2c.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/security/tpm/tpm-tis-i2c.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: I2C PTP based TPM Devices
> +
> +maintainers:
> + - Johannes Holland <johannes.holland@...ineon.com>
> +
> +description:
> + Device Tree Bindings for I2C based Trusted Platform Module (TPM).
> +
> +properties:
> + $nodename:
> + pattern: "^tpm(@[0-9a-f]+)?$"
> +
> + compatible:
> + oneOf:
> + - description: Infineon's Trusted Platform Module (TPM) (SLB9673).
> + items:
> + - const: infineon,slb9673
> + - const: tcg,tpm-tis-i2c
> + - description: Nuvoton's Trusted Platform Module (TPM) (NPCT75x).
> + items:
> + - const: nuvoton,npct75x
> + - const: tcg,tpm-tis-i2c
> + - const: tcg,tpm-tis-i2c
> + reg:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + tpm@2e {
> + compatible = "nuvoton,npct75x", "tcg,tpm-tis-i2c";
> + reg = <0x2e>;
> + };
> + };
> +...
BR, Jarkko
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