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authorEnric Balletbo i Serra <enric.balletbo@collabora.com>2017-06-27 12:27:23 +0200
committerJames Morris <james.l.morris@oracle.com>2017-09-23 21:50:29 -0700
commit5d0e4d78149b9745ea34848e950e734f7db3b95f (patch)
treee2be416597ff46cfae342974ad2c9acb41f2949e
parente1ec650f9ae7d1e66f77bf14c86e4e9dc629a4d5 (diff)
downloadlinux-5d0e4d78149b9745ea34848e950e734f7db3b95f.tar.gz
Documentation: tpm: add powered-while-suspended binding documentation
Add a new powered-while-suspended property to control the behavior of the TPM suspend/resume. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Sonny Rao <sonnyrao@chromium.org> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
-rw-r--r--Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt b/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt
index 8cb638b7e89c..85c8216fc335 100644
--- a/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt
+++ b/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt
@@ -8,6 +8,12 @@ Required properties:
the firmware event log
- linux,sml-size : size of the memory allocated for the firmware event log
+Optional properties:
+
+- powered-while-suspended: present when the TPM is left powered on between
+ suspend and resume (makes the suspend/resume
+ callbacks do nothing).
+
Example (for OpenPower Systems with Nuvoton TPM 2.0 on I2C)
----------------------------------------------------------