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From: Enric Balletbo i Serra <enric.balletbo-ZGY8ohtN/>
To: Rob Herring <>,
	Jarkko Sakkinen
	Peter Huewe <>
	Mark Rutland <>,
	Jason Gunthorpe
	Sonny Rao <>,
Subject: [PATCH v4 RESEND 1/2] Documentation: tpm: add powered-while-suspended binding documentation
Date: Tue, 27 Jun 2017 12:27:23 +0200	[thread overview]
Message-ID: <> (raw)

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-ZGY8ohtN/>
Signed-off-by: Sonny Rao <>
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/>
Acked-by: Rob Herring <>
Changes since v3.
  - Rebased on top of linux-next
 Rob Herring
  - Split DT binding from code patch as is preferred. 

Did not exist on previous versions.

 Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt b/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt
index 8cb638b..85c8216 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)

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             reply	other threads:[~2017-06-27 10:27 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-27 10:27 Enric Balletbo i Serra [this message]
     [not found] ` <20170627102724.23861-1-enric.balletbo-ZGY8ohtN/>
2017-06-27 10:27   ` [PATCH v4 RESEND 2/2] tpm: do not suspend/resume if power stays on Enric Balletbo i Serra
     [not found]     ` <20170627102724.23861-2-enric.balletbo-ZGY8ohtN/>
2017-07-03 13:00       ` Jarkko Sakkinen
2017-07-03 12:57   ` [PATCH v4 RESEND 1/2] Documentation: tpm: add powered-while-suspended binding documentation Jarkko Sakkinen
     [not found]     ` <20170703125735.dsrl6bs7ttj27zrt-VuQAYsv1563Yd54FQh9/>
2017-07-05 17:19       ` Sonny Rao
     [not found]         ` <>
2017-07-09  7:04           ` Jarkko Sakkinen
2017-07-16 11:23           ` Jarkko Sakkinen

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