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charset="utf-8" This adds device tree bindings for the board management controller - QIXIS CPLD - found on some Layerscape based boards such as LX2160A-RDB, LX2160AQDS, LS1028AQDS etc. Signed-off-by: Ioana Ciornei --- .../bindings/mfd/fsl,qixis-i2c.yaml | 65 +++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/fsl,qixis-i2c.yaml diff --git a/Documentation/devicetree/bindings/mfd/fsl,qixis-i2c.yaml b/Doc= umentation/devicetree/bindings/mfd/fsl,qixis-i2c.yaml new file mode 100644 index 000000000000..562878050916 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/fsl,qixis-i2c.yaml @@ -0,0 +1,65 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/fsl,qixis-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP's QIXIS CPLD board management controller + +maintainers: + - Ioana Ciornei + +description: | + The board management controller found on some Layerscape boards contains + different IP blocks like GPIO controllers, interrupt controllers, reg-mu= xes + etc. + +properties: + compatible: + enum: + - fsl,lx2160a-qds-qixis-i2c + - fsl,lx2162a-qds-qixis-i2c + - fsl,ls1028a-qds-qixis-i2c + + reg: + description: + I2C device address. + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + mux-controller: + $ref: /schemas/mux/reg-mux.yaml# + +required: + - "#address-cells" + - "#size-cells" + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells =3D <1>; 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charset="utf-8" The QIXIS CPLD found on Layerscape boards such as LX2160AQDS, LS1028AQDS etc deals with power-on-reset timing, muxing etc. Use the simple-mfd-i2c as its core driver by adding an individual compatible string for each board. Signed-off-by: Ioana Ciornei --- drivers/mfd/simple-mfd-i2c.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c index 22159913bea0..506b69858a84 100644 --- a/drivers/mfd/simple-mfd-i2c.c +++ b/drivers/mfd/simple-mfd-i2c.c @@ -99,6 +99,9 @@ static const struct of_device_id simple_mfd_i2c_of_match[= ] =3D { { .compatible =3D "maxim,max5970", .data =3D &maxim_max5970}, { .compatible =3D "maxim,max5978", .data =3D &maxim_max5970}, { .compatible =3D "maxim,max77705-battery", .data =3D &maxim_mon_max77705= }, + { .compatible =3D "fsl,lx2160a-qds-qixis-i2c" }, + { .compatible =3D "fsl,lx2162a-qds-qixis-i2c" }, + { .compatible =3D "fsl,ls1028a-qds-qixis-i2c" }, {} }; MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match); --=20 2.25.1 From nobody Mon Feb 9 11:07:04 2026 Received: from EUR05-DB8-obe.outbound.protection.outlook.com (mail-db8eur05on2049.outbound.protection.outlook.com [40.107.20.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A7AEC2609FD; 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charset="utf-8" The MDIO mux on the LX2160A-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 --- arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts b/arch/arm64= /boot/dts/freescale/fsl-lx2160a-qds.dts index 4d721197d837..d1db38d6a027 100644 --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts @@ -240,12 +240,14 @@ &i2c0 { status =3D "okay"; =20 fpga@66 { - compatible =3D "fsl,lx2160aqds-fpga", "fsl,fpga-qixis-i2c", - "simple-mfd"; + compatible =3D "fsl,lx2160a-qds-qixis-i2c"; reg =3D <0x66>; + #address-cells =3D <1>; + #size-cells =3D <0>; =20 - mux: mux-controller { + mux: mux-controller@54 { compatible =3D "reg-mux"; + reg =3D <0x54>; #mux-control-cells =3D <1>; mux-reg-masks =3D <0x54 0xf8>, /* 0: reg 0x54, bits 7:3 */ <0x54 0x07>; /* 1: reg 0x54, bit 2:0 */ --=20 2.25.1 From nobody Mon Feb 9 11:07:04 2026 Received: from EUR03-AM7-obe.outbound.protection.outlook.com (mail-am7eur03on2048.outbound.protection.outlook.com [40.107.105.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A05F326158F; 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charset="utf-8" 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 --- 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 =3D "okay"; =20 fpga@66 { - compatible =3D "fsl,lx2160aqds-fpga", "fsl,fpga-qixis-i2c", - "simple-mfd"; + compatible =3D "fsl,lx2162a-qds-qixis-i2c"; reg =3D <0x66>; + #address-cells =3D <1>; + #size-cells =3D <0>; =20 - mux: mux-controller { + mux: mux-controller@54 { compatible =3D "reg-mux"; + reg =3D <0x54>; #mux-control-cells =3D <1>; mux-reg-masks =3D <0x54 0xf8>, /* 0: reg 0x54, bits 7:3 */ <0x54 0x07>; /* 1: reg 0x54, bit 2:0 */ --=20 2.25.1 From nobody Mon Feb 9 11:07:04 2026 Received: from EUR03-AM7-obe.outbound.protection.outlook.com (mail-am7eur03on2048.outbound.protection.outlook.com [40.107.105.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CC7E72641EE; 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charset="utf-8" From: Vladimir Oltean The MDIO mux on the LS1028A-QDS never worked in mainline. The device tree was submitted as-is, and there is a downstream driver for the QIXIS FPGA: https://github.com/nxp-qoriq/linux/blob/lf-6.12.y/drivers/soc/fsl/qixis_ctr= l.c That driver is very similar to the already existing drivers/mfd/simple-mfd-= i2c.c, and the hardware works with the simple-mfd-i2c driver, so there isn't any reason to upstream the other one. Adapt the compatible string and child node format of the FPGA node, so that the simple-mfd-i2c driver accepts it. Signed-off-by: Vladimir Oltean Signed-off-by: Ioana Ciornei --- arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts b/arch/arm64= /boot/dts/freescale/fsl-ls1028a-qds.dts index 0bb2f28a0441..58b54d521d75 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts @@ -338,17 +338,18 @@ sgtl5000: audio-codec@a { }; =20 fpga@66 { - compatible =3D "fsl,ls1028aqds-fpga", "fsl,fpga-qixis-i2c", - "simple-mfd"; + compatible =3D "fsl,ls1028a-qds-qixis-i2c"; reg =3D <0x66>; + #address-cells =3D <1>; + #size-cells =3D <0>; =20 - mux: mux-controller { + mux: mux-controller@54 { compatible =3D "reg-mux"; + reg =3D <0x54>; #mux-control-cells =3D <1>; mux-reg-masks =3D <0x54 0xf0>; /* 0: reg 0x54, bits 7:4 */ }; }; - }; =20 &i2c1 { --=20 2.25.1 From nobody Mon Feb 9 11:07:04 2026 Received: from EUR03-AM7-obe.outbound.protection.outlook.com (mail-am7eur03on2048.outbound.protection.outlook.com [40.107.105.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0956A264F9D; 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charset="utf-8" Describe the two LX2160AQDS on-board RGMII PHYs on their respective MDIO buses behind the MDIO multiplexer. Signed-off-by: Ioana Ciornei --- .../boot/dts/freescale/fsl-lx2160a-qds.dts | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts b/arch/arm64= /boot/dts/freescale/fsl-lx2160a-qds.dts index d1db38d6a027..a40fdd949a8e 100644 --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts @@ -43,12 +43,22 @@ mdio@0 { /* On-board PHY #1 RGMI1*/ reg =3D <0x00>; #address-cells =3D <1>; #size-cells =3D <0>; + + rgmii_phy1: ethernet-phy@1 { + compatible =3D "ethernet-phy-id001c.c916"; + reg =3D <0x1>; + }; }; =20 mdio@8 { /* On-board PHY #2 RGMI2*/ reg =3D <0x8>; #address-cells =3D <1>; #size-cells =3D <0>; + + rgmii_phy2: ethernet-phy@2 { + compatible =3D "ethernet-phy-id001c.c916"; + reg =3D <0x2>; + }; }; =20 mdio@18 { /* Slot #1 */ @@ -169,6 +179,16 @@ &crypto { status =3D "okay"; }; =20 +&dpmac17 { + phy-handle =3D <&rgmii_phy1>; + phy-connection-type =3D "rgmii-id"; +}; + +&dpmac18 { + phy-handle =3D <&rgmii_phy2>; + phy-connection-type =3D "rgmii-id"; +}; + &dspi0 { status =3D "okay"; =20 --=20 2.25.1