diff mbox series

[v2,1/4] dt-bindings: tpm: Add compatible string atmel,attpm20p

Message ID 8886271d52025065eddf5915bb7778ab14362255.1705140898.git.lukas@wunner.de
State Accepted
Commit 23595de568c1445f5a5cfb3bbad6644578dfc285
Headers show
Series Add missing TPM compatible strings | expand

Commit Message

Lukas Wunner Jan. 13, 2024, 5:10 p.m. UTC
Commit 4f2a348aa365 ("arm64: dts: imx8mm-venice-gw73xx: add TPM device")
added a devicetree node for the Trusted Platform Module on certain
Gateworks boards.

The commit only used the generic "tcg,tpm_tis-spi" compatible string,
but public documentation shows that the chip is an ATTPM20P from Atmel
(nowadays Microchip):
https://trac.gateworks.com/wiki/tpm

Add the chip to the supported compatible strings of the TPM TIS SPI
schema.

For reference, a datasheet is available at:
https://ww1.microchip.com/downloads/en/DeviceDoc/ATTPM20P-Trusted-Platform-Module-TPM-2.0-SPI-Interface-Summary-Data-Sheet-DS40002082A.pdf

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Tim Harvey <tharvey@gateworks.com>
---
 Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml | 1 +
 1 file changed, 1 insertion(+)

Comments

Rob Herring (Arm) Jan. 16, 2024, 6:37 p.m. UTC | #1
On Sat, 13 Jan 2024 18:10:51 +0100, Lukas Wunner wrote:
> Commit 4f2a348aa365 ("arm64: dts: imx8mm-venice-gw73xx: add TPM device")
> added a devicetree node for the Trusted Platform Module on certain
> Gateworks boards.
> 
> The commit only used the generic "tcg,tpm_tis-spi" compatible string,
> but public documentation shows that the chip is an ATTPM20P from Atmel
> (nowadays Microchip):
> https://trac.gateworks.com/wiki/tpm
> 
> Add the chip to the supported compatible strings of the TPM TIS SPI
> schema.
> 
> For reference, a datasheet is available at:
> https://ww1.microchip.com/downloads/en/DeviceDoc/ATTPM20P-Trusted-Platform-Module-TPM-2.0-SPI-Interface-Summary-Data-Sheet-DS40002082A.pdf
> 
> Signed-off-by: Lukas Wunner <lukas@wunner.de>
> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---
>  Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml b/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml
index c3413b4..6cb2de7 100644
--- a/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml
+++ b/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml
@@ -20,6 +20,7 @@  properties:
   compatible:
     items:
       - enum:
+          - atmel,attpm20p
           - infineon,slb9670
           - st,st33htpm-spi
           - st,st33zp24-spi