From: Adriana Kobylak <anoo@linux.ibm.com>
To: joel@jms.id.au, eajames@linux.ibm.com,
linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org
Cc: spinler@us.ibm.com, derekh@us.ibm.com, openbmc@lists.ozlabs.org,
Adriana Kobylak <anoo@us.ibm.com>,
bjwyman@gmail.com, shawnmm@us.ibm.com
Subject: [PATCH v3] ARM: dts: aspeed: rainier: Add power-config-full-load gpio
Date: Tue, 5 Oct 2021 19:22:26 +0000 [thread overview]
Message-ID: <20211005192226.213539-1-anoo@linux.ibm.com> (raw)
From: Adriana Kobylak <anoo@us.ibm.com>
Add the power-config-full-load described in:
https://github.com/openbmc/docs/blob/master/designs/device-tree-gpio-naming.md#power-config-full-load
The power-config-full-load gpio is designed to be used to specify how
many power supplies the system should have, in rainier it is 2 or 4. If
enough power supplies fail so that the system no longer has redundancy
(no longer n+1), the hardware will signal to the Onboard Chip Controller
that the system may be oversubscribed, and performance may need to be
reduced so the system can maintain it's powered on state.
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
---
v2: Update commit message.
v3: Updated gpio name to power-config-full-load to match design doc.
arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index 33fae8ad1305..10bde77fb847 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -1998,6 +1998,19 @@ eeprom@51 {
reg = <0x51>;
};
+ pca_pres3: pca9552@60 {
+ compatible = "nxp,pca9552";
+ reg = <0x60>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ gpio-line-names =
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "power-config-full-load", "";
+ };
+
pca_pres2: pca9552@61 {
compatible = "nxp,pca9552";
reg = <0x61>;
--
2.25.1
next reply other threads:[~2021-10-05 19:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-05 19:22 Adriana Kobylak [this message]
2021-10-08 4:22 ` [PATCH v3] ARM: dts: aspeed: rainier: Add power-config-full-load gpio Joel Stanley
2021-10-11 21:54 ` Adriana Kobylak
2021-10-08 12:27 ` Eddie James
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