Re: [PATCH v3] ARM: dts: aspeed: rainier: Add power-config-full-load gpio
From: Eddie James <eajames@linux.ibm.com>
Date: 2021-10-08 12:30:37
Also in:
linux-aspeed, openbmc
On 10/5/21 2:22 PM, Adriana Kobylak wrote:
From: Adriana Kobylak <redacted> 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.
Reviewed-by: Eddie James <eajames@linux.ibm.com>
quoted hunk ↗ jump to hunk
Signed-off-by: Adriana Kobylak <redacted> --- 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>;
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