linux-kernel - [PATCH 4/6] arm64: dts: lx2162a-qds: make the QIXIS CPLD use the simple-mfd-i2c.c driver

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Message-Id: <20250430153634.2971736-5-ioana.ciornei@nxp.com>
Date: Wed, 30 Apr 2025 18:36:32 +0300
From: Ioana Ciornei <ioana.ciornei@....com>
To: Lee Jones <lee@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 4/6] arm64: dts: lx2162a-qds: make the QIXIS CPLD use the simple-mfd-i2c.c driver

The MDIO mux on the LX2162A-QDS never worked in mainline. There is a
downstream driver for the QIXIS FPGA which is very similar to the
already existing drivers/mfd/simple-mfd-i2c. Since the HW works with
simple-mfd-i2c.c there is no point in upstreaming the other one.

Adapt the compatible string and the child node of the FPGA node, so that
the simple-mfd-i2c.c driver accepts it.

Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
 arch/arm64/boot/dts/freescale/fsl-lx2162a-qds.dts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2162a-qds.dts b/arch/arm64/boot/dts/freescale/fsl-lx2162a-qds.dts
index 9f5ff1ffe7d5..53a88e0b54ff 100644
--- a/arch/arm64/boot/dts/freescale/fsl-lx2162a-qds.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-lx2162a-qds.dts
@@ -267,12 +267,14 @@ &i2c0 {
 	status = "okay";
 
 	fpga@66 {
-		compatible = "fsl,lx2160aqds-fpga", "fsl,fpga-qixis-i2c",
-			     "simple-mfd";
+		compatible = "fsl,lx2162a-qds-qixis-i2c";
 		reg = <0x66>;
+		#address-cells = <1>;
+		#size-cells = <0>;
 
-		mux: mux-controller {
+		mux: mux-controller@54 {
 			compatible = "reg-mux";
+			reg = <0x54>;
 			#mux-control-cells = <1>;
 			mux-reg-masks = <0x54 0xf8>, /* 0: reg 0x54, bits 7:3 */
 					<0x54 0x07>; /* 1: reg 0x54, bit 2:0 */
-- 
2.25.1