linux-kernel - [PATCH v4 4/8] ARM: dts: aspeed: catalina: Add fan controller support

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Message-Id: <20250320-potin-catalina-dts-update-20250102-v4-4-7c34b8139014@gmail.com>
Date: Thu, 20 Mar 2025 00:47:25 +0800
From: Potin Lai <potin.lai.pt@...il.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Joel Stanley <joel@....id.au>, 
 Andrew Jeffery <andrew@...econstruct.com.au>, 
 Patrick Williams <patrick@...cx.xyz>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
 Cosmo Chou <cosmo.chou@...ntatw.com>, Potin Lai <potin.lai@...ntatw.com>, 
 Potin Lai <potin.lai.pt@...il.com>
Subject: [PATCH v4 4/8] ARM: dts: aspeed: catalina: Add fan controller
 support

Add device tree nodes for the MAX31790 fan controllers on the Power
Distribution Board (PDB). These nodes enable fan speed control and
monitoring, improving thermal management and system reliability.

Signed-off-by: Potin Lai <potin.lai.pt@...il.com>
---
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts
index db999408e397..0b513829f2de 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-catalina.dts
@@ -526,6 +526,15 @@ i2c1mux0ch2: i2c@2 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x2>;
+
+			pwm@21{
+				compatible = "maxim,max31790";
+				reg = <0x21>;
+			};
+			pwm@27{
+				compatible = "maxim,max31790";
+				reg = <0x27>;
+			};
 		};
 		i2c1mux0ch3: i2c@3 {
 			#address-cells = <1>;

-- 
2.31.1