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From: Joel Stanley <joel@jms.id.au>
To: openbmc@lists.ozlabs.org, andrew@aj.id.au
Cc: linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org
Subject: [PATCH 1/2] ARM: dts: rainier, everest: Add TPM reset GPIO
Date: Tue, 27 Jul 2021 13:03:18 +0930	[thread overview]
Message-ID: <20210727033319.473152-2-joel@jms.id.au> (raw)
In-Reply-To: <20210727033319.473152-1-joel@jms.id.au>

The GPIO is used to place the BMC-connected TPM in reset. This state is
latched until the BMC is next reset, blocking access to the TPM for that
boot.

On both machines this net is called TPM_RESET_LATCH_B.

Signed-off-by: Joel Stanley <joel@jms.id.au>
---
 arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts | 2 +-
 arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
index aa24cac8e5be..4536cd538af9 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
@@ -253,7 +253,7 @@ &gpio0 {
 	/*O0-O7*/	"","","","","","","","",
 	/*P0-P7*/	"","","","","led-pcieslot-power","","","",
 	/*Q0-Q7*/	"","","","","","","","",
-	/*R0-R7*/	"","","","","","I2C_FLASH_MICRO_N","","",
+	/*R0-R7*/	"bmc-tpm-reset","","","","","I2C_FLASH_MICRO_N","","",
 	/*S0-S7*/	"","","","","","","","",
 	/*T0-T7*/	"","","","","","","","",
 	/*U0-U7*/	"","","","","","","","",
diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index 481d0ee1f85f..06b3d1573780 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -271,7 +271,7 @@ &gpio0 {
 	/*O0-O7*/	"","","","usb-power","","","","",
 	/*P0-P7*/	"","","","","pcieslot-power","","","",
 	/*Q0-Q7*/	"cfam-reset","","","","","","","",
-	/*R0-R7*/	"","","","","","","","",
+	/*R0-R7*/	"bmc-tpm-reset","","","","","","","",
 	/*S0-S7*/	"presence-ps0","presence-ps1","presence-ps2","presence-ps3",
 				"","","","",
 	/*T0-T7*/	"","","","","","","","",
-- 
2.32.0


  reply	other threads:[~2021-07-27  3:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-27  3:33 [PATCH 0/2] ARM: dts: aspeed: Add TPM GPIO names Joel Stanley
2021-07-27  3:33 ` Joel Stanley [this message]
2021-07-27  3:58   ` [PATCH 1/2] ARM: dts: rainier, everest: Add TPM reset GPIO Andrew Jeffery
2021-07-27  3:33 ` [PATCH 2/2] ARM: dts: aspeed: tacoma: " Joel Stanley
2021-07-27  4:04   ` Andrew Jeffery

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