[PATCH v6 21/27] misc: lan966x_pci: Split dtso in dtsi/dtso

Herve Codina
2026-03-25T14:42:29Z

The lan966x_pci.dtso file contains descriptions related to both the
LAN966x PCI device chip and the LAN966x PCI device board where the chip
is soldered.

Split the file in order to have:
- lan966x_pci.dtsi
The description related to the PCI chip.

- lan966x_pci.dtso
The description of the PCI board.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
MAINTAINERS | 1 +
drivers/misc/lan966x_pci.dtsi | 130 +++++++++++++++++++++++++
drivers/misc/lan966x_pci.dtso | 175 +++++++---------------------------
3 files changed, 166 insertions(+), 140 deletions(-)
create mode 100644 drivers/misc/lan966x_pci.dtsi

diff --git a/MAINTAINERS b/MAINTAINERS
index 55af015174a5..441fe74e7ef7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17305,6 +17305,7 @@ MICROCHIP LAN966X PCI DRIVER
M: Herve Codina <herve.codina@bootlin.com>
S: Maintained
F: drivers/misc/lan966x_pci.c
+F: drivers/misc/lan966x_pci.dtsi
F: drivers/misc/lan966x_pci.dtso

MICROCHIP LAN969X ETHERNET DRIVER
diff --git a/drivers/misc/lan966x_pci.dtsi b/drivers/misc/lan966x_pci.dtsi
new file mode 100644
index 000000000000..170298084fa5
--- /dev/null
+++ b/drivers/misc/lan966x_pci.dtsi
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Microchip UNG
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+
+cpu_clk: clock-600000000 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <600000000>; /* CPU clock = 600MHz */
+};
+
+ddr_clk: clock-30000000 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <30000000>; /* Fabric clock = 30MHz */
+};
+
+sys_clk: clock-15625000 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <15625000>; /* System clock = 15.625MHz */
+};
+
+pci-ep-bus@0 {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ /*
+ * map @0xe2000000 (32MB) to BAR0 (CPU)
+ * map @0xe0000000 (16MB) to BAR1 (AMBA)
+ */
+ ranges = <0xe2000000 0x00 0x00 0x00 0x2000000
+ 0xe0000000 0x01 0x00 0x00 0x1000000>;
+
+ switch: switch@e0000000 {
+ compatible = "microchip,lan966x-switch";
+ reg = <0xe0000000 0x0100000>,
+ <0xe2000000 0x0800000>;
+ reg-names = "cpu", "gcb";
+ interrupt-parent = <&oic>;
+ interrupts = <12 IRQ_TYPE_LEVEL_HIGH>,
+ <9 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "xtr", "ana";
+ resets = <&reset 0>;
+ reset-names = "switch";
+ status = "disabled";
+
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port0: port@0 {
+ reg = <0>;
+ status = "disabled";
+ };
+
+ port1: port@1 {
+ reg = <1>;
+ status = "disabled";
+ };
+ };
+ };
+
+ cpu_ctrl: syscon@e00c0000 {
+ compatible = "microchip,lan966x-cpu-syscon", "syscon";
+ reg = <0xe00c0000 0xa8>;
+ };
+
+ oic: oic@e00c0120 {
+ compatible = "microchip,lan966x-oic";
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ interrupts = <0>; /* PCI INTx assigned interrupt */
+ reg = <0xe00c0120 0x190>;
+ };
+
+ reset: reset@e200400c {
+ compatible = "microchip,lan966x-switch-reset";
+ reg = <0xe200400c 0x4>, <0xe00c0000 0xa8>;
+ reg-names = "gcb","cpu";
+ #reset-cells = <1>;
+ cpu-syscon = <&cpu_ctrl>;
+ };
+
+ gpio: pinctrl@e2004064 {
+ compatible = "microchip,lan966x-pinctrl";
+ reg = <0xe2004064 0xb4>,
+ <0xe2010024 0x138>;
+ resets = <&reset 0>;
+ reset-names = "switch";
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&gpio 0 0 78>;
+ interrupt-parent = <&oic>;
+ interrupt-controller;
+ interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
+ #interrupt-cells = <2>;
+ };
+
+ mdio1: mdio@e200413c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "microchip,lan966x-miim";
+ reg = <0xe200413c 0x24>,
+ <0xe2010020 0x4>;
+ resets = <&reset 0>;
+ reset-names = "switch";
+ status = "disabled";
+
+ lan966x_phy0: ethernet-lan966x_phy@1 {
+ reg = <1>;
+ status = "disabled";
+ };
+
+ lan966x_phy1: ethernet-lan966x_phy@2 {
+ reg = <2>;
+ status = "disabled";
+ };
+ };
+
+ serdes: serdes@e202c000 {
+ compatible = "microchip,lan966x-serdes";
+ reg = <0xe202c000 0x9c>,
+ <0xe2004010 0x4>;
+ #phy-cells = <2>;
+ };
+};
diff --git a/drivers/misc/lan966x_pci.dtso b/drivers/misc/lan966x_pci.dtso
index 94a967b384f3..3ad50abee72d 100644
--- a/drivers/misc/lan966x_pci.dtso
+++ b/drivers/misc/lan966x_pci.dtso
@@ -3,10 +3,7 @@
* Copyright (C) 2022 Microchip UNG
*/

-#include <dt-bindings/clock/microchip,lan966x.h>
#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/interrupt-controller/irq.h>
-#include <dt-bindings/mfd/atmel-flexcom.h>
#include <dt-bindings/phy/phy-lan966x-serdes.h>

/dts-v1/;
@@ -29,148 +26,46 @@ __overlay__ {
#address-cells = <3>;
#size-cells = <2>;

- cpu_clk: clock-600000000 {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <600000000>; /* CPU clock = 600MHz */
- };
-
- ddr_clk: clock-30000000 {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <30000000>; /* Fabric clock = 30MHz */
- };
-
- sys_clk: clock-15625000 {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <15625000>; /* System clock = 15.625MHz */
- };
-
- pci-ep-bus@0 {
- compatible = "simple-bus";
- #address-cells = <1>;
- #size-cells = <1>;
-
- /*
- * map @0xe2000000 (32MB) to BAR0 (CPU)
- * map @0xe0000000 (16MB) to BAR1 (AMBA)
- */
- ranges = <0xe2000000 0x00 0x00 0x00 0x2000000
- 0xe0000000 0x01 0x00 0x00 0x1000000>;
-
- switch: switch@e0000000 {
- compatible = "microchip,lan966x-switch";
- reg = <0xe0000000 0x0100000>,
- <0xe2000000 0x0800000>;
- reg-names = "cpu", "gcb";
-
- interrupt-parent = <&oic>;
- interrupts = <12 IRQ_TYPE_LEVEL_HIGH>,
- <9 IRQ_TYPE_LEVEL_HIGH>;
- interrupt-names = "xtr", "ana";
-
- resets = <&reset 0>;
- reset-names = "switch";
-
- pinctrl-names = "default";
- pinctrl-0 = <&tod_pins>;
-
- ethernet-ports {
- #address-cells = <1>;
- #size-cells = <0>;
-
- port0: port@0 {
- phy-handle = <&lan966x_phy0>;
-
- reg = <0>;
- phy-mode = "gmii";
- phys = <&serdes 0 CU(0)>;
- };
-
- port1: port@1 {
- phy-handle = <&lan966x_phy1>;
-
- reg = <1>;
- phy-mode = "gmii";
- phys = <&serdes 1 CU(1)>;
- };
- };
- };
-
- cpu_ctrl: syscon@e00c0000 {
- compatible = "microchip,lan966x-cpu-syscon", "syscon";
- reg = <0xe00c0000 0xa8>;
- };
-
- oic: oic@e00c0120 {
- compatible = "microchip,lan966x-oic";
- #interrupt-cells = <2>;
- interrupt-controller;
- interrupts = <0>; /* PCI INTx assigned interrupt */
- reg = <0xe00c0120 0x190>;
- };
-
- reset: reset@e200400c {
- compatible = "microchip,lan966x-switch-reset";
- reg = <0xe200400c 0x4>, <0xe00c0000 0xa8>;
- reg-names = "gcb","cpu";
- #reset-cells = <1>;
- cpu-syscon = <&cpu_ctrl>;
- };
-
- gpio: pinctrl@e2004064 {
- compatible = "microchip,lan966x-pinctrl";
- reg = <0xe2004064 0xb4>,
- <0xe2010024 0x138>;
- resets = <&reset 0>;
- reset-names = "switch";
- gpio-controller;
- #gpio-cells = <2>;
- gpio-ranges = <&gpio 0 0 78>;
- interrupt-parent = <&oic>;
- interrupt-controller;
- interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
- #interrupt-cells = <2>;
+ #include "lan966x_pci.dtsi"
+ };
+ };
+};

- tod_pins: tod_pins {
- pins = "GPIO_36";
- function = "ptpsync_1";
- };
+&gpio {
+ tod_pins: tod_pins {
+ pins = "GPIO_36";
+ function = "ptpsync_1";
+ };
+};

- fc0_a_pins: fcb4-i2c-pins {
- /* RXD, TXD */
- pins = "GPIO_9", "GPIO_10";
- function = "fc0_a";
- };
- };
+&lan966x_phy0 {
+ status = "okay";
+};

- mdio1: mdio@e200413c {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "microchip,lan966x-miim";
- reg = <0xe200413c 0x24>,
- <0xe2010020 0x4>;
+&lan966x_phy1 {
+ status = "okay";
+};

- resets = <&reset 0>;
- reset-names = "switch";
+&mdio1 {
+ status = "okay";
+};

- lan966x_phy0: ethernet-lan966x_phy@1 {
- reg = <1>;
- };
+&port0 {
+ phy-handle = <&lan966x_phy0>;
+ phy-mode = "gmii";
+ phys = <&serdes 0 CU(0)>;
+ status = "okay";
+};

- lan966x_phy1: ethernet-lan966x_phy@2 {
- reg = <2>;
- };
- };
+&port1 {
+ phy-handle = <&lan966x_phy1>;
+ phy-mode = "gmii";
+ phys = <&serdes 1 CU(1)>;
+ status = "okay";
+};

- serdes: serdes@e202c000 {
- compatible = "microchip,lan966x-serdes";
- reg = <0xe202c000 0x9c>,
- <0xe2004010 0x4>;
- #phy-cells = <2>;
- };
- };
- };
- };
+&switch {
+ pinctrl-names = "default";
+ pinctrl-0 = <&tod_pins>;
+ status = "okay";
};
--
2.53.0