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ixp4xx: Add some upstream patches

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This corrects the WRV54G device tree and adds patches for
MI424WR alongh with GPIO MMIO support for the same.

Link: https://github.com/openwrt/openwrt/pull/20066
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2025-09-16 21:27:05 +02:00
parent 86618df095
commit cfb371a796
3 changed files with 573 additions and 0 deletions
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26
target/linux/ixp4xx/patches-6.12/0003-v6.18-gpio-mmio-Add-compatible-for-the-ixp4xx-eb-MMIO.patch Normal file
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@ -0,0 +1,26 @@
From 38623d532c99ebd926f4eebb7c7de19cb7e5aef4 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 22 Aug 2025 17:46:28 +0200
Subject: [PATCH] gpio: mmio: Add compatible for the ixp4xx eb MMIO
The IXP4xx expansion bus can have simple memory-mapped GPIO
on it. Using the proper device tree bindings, support probing
this directly from the device tree.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250822-ixp4xx-eb-mmio-gpio-v2-3-bd2edd4a9c74@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
drivers/gpio/gpio-mmio.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpio/gpio-mmio.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -687,6 +687,7 @@ static const struct of_device_id bgpio_o
{ .compatible = "brcm,bcm6345-gpio" },
{ .compatible = "wd,mbl-gpio" },
{ .compatible = "ni,169445-nand-gpio" },
+ { .compatible = "intel,ixp4xx-expansion-bus-mmio-gpio" },
{ }
};
MODULE_DEVICE_TABLE(of, bgpio_of_match);

156
target/linux/ixp4xx/patches-6.12/0004-v6.18-ARM-dts-Fix-up-wrv54g-device-tree.patch Normal file
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@ -0,0 +1,156 @@
From c9cc6b6a7d23eea7ada69a9185a550c4f0b62319 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Wed, 25 Jun 2025 08:51:25 +0200
Subject: [PATCH] ARM: dts: Fix up wrv54g device tree
Fix up the KS8995 switch and PHYs the way that is most likely:
- Phy 1-4 is certainly the PHYs of the KS8995 (mask 0x1e in
the outoftree code masks PHYs 1,2,3,4).
- Phy 5 is the MII-P5 separate WAN phy of the KS8995 directly
connected to EthC.
- The EthB MII is probably connected as CPU interface to the
KS8995.
Properly integrate the KS8995 switch using the new bindings.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250625-ks8995-dsa-bindings-v2-2-ce71dce9be0b@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
.../intel/ixp/intel-ixp42x-linksys-wrv54g.dts | 92 ++++++++++++++++---
1 file changed, 78 insertions(+), 14 deletions(-)
--- a/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-wrv54g.dts
+++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-linksys-wrv54g.dts
@@ -72,10 +72,55 @@
cs-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
num-chipselects = <1>;
- switch@0 {
+ ethernet-switch@0 {
compatible = "micrel,ks8995";
reg = <0>;
spi-max-frequency = <50000000>;
+
+ /*
+ * The PHYs are accessed over the external MDIO
+ * bus and not internally through the switch control
+ * registers.
+ */
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethernet-port@0 {
+ reg = <0>;
+ label = "1";
+ phy-mode = "mii";
+ phy-handle = <&phy1>;
+ };
+ ethernet-port@1 {
+ reg = <1>;
+ label = "2";
+ phy-mode = "mii";
+ phy-handle = <&phy2>;
+ };
+ ethernet-port@2 {
+ reg = <2>;
+ label = "3";
+ phy-mode = "mii";
+ phy-handle = <&phy3>;
+ };
+ ethernet-port@3 {
+ reg = <3>;
+ label = "4";
+ phy-mode = "mii";
+ phy-handle = <&phy4>;
+ };
+ ethernet-port@4 {
+ reg = <4>;
+ ethernet = <&ethb>;
+ phy-mode = "mii";
+ fixed-link {
+ speed = <100>;
+ full-duplex;
+ };
+ };
+
+ };
};
};
@@ -135,40 +180,59 @@
};
/*
- * EthB - connected to the KS8995 switch ports 1-4
- * FIXME: the boardfile defines .phy_mask = 0x1e for this port to enable output to
- * all four switch ports, also using an out of tree multiphy patch.
- * Do we need a new binding and property for this?
+ * EthB connects to the KS8995 CPU port and faces ports 1-4
+ * through the switch fabric.
+ *
+ * To complicate things, the MDIO channel is also only
+ * accessible through EthB, but used independently for PHY
+ * control.
*/
- ethernet@c8009000 {
+ ethb: ethernet@c8009000 {
status = "okay";
queue-rx = <&qmgr 3>;
queue-txready = <&qmgr 20>;
- phy-mode = "rgmii";
- phy-handle = <&phy4>;
+ phy-mode = "mii";
+ fixed-link {
+ speed = <100>;
+ full-duplex;
+ };
mdio {
#address-cells = <1>;
#size-cells = <0>;
- /* Should be ports 1-4 on the KS8995 switch */
+ /*
+ * LAN ports 1-4 on the KS8995 switch
+ * and PHY5 for WAN need to be accessed
+ * through this external MDIO channel.
+ */
+ phy1: ethernet-phy@1 {
+ reg = <1>;
+ };
+ phy2: ethernet-phy@2 {
+ reg = <2>;
+ };
+ phy3: ethernet-phy@3 {
+ reg = <3>;
+ };
phy4: ethernet-phy@4 {
reg = <4>;
};
-
- /* Should be port 5 on the KS8995 switch */
phy5: ethernet-phy@5 {
reg = <5>;
};
};
};
- /* EthC - connected to KS8995 switch port 5 */
- ethernet@c800a000 {
+ /*
+ * EthC connects to MII-P5 on the KS8995 bypassing
+ * all of the switch logic and facing PHY5
+ */
+ ethc: ethernet@c800a000 {
status = "okay";
queue-rx = <&qmgr 4>;
queue-txready = <&qmgr 21>;
- phy-mode = "rgmii";
+ phy-mode = "mii";
phy-handle = <&phy5>;
};
};

391
target/linux/ixp4xx/patches-6.12/0005-v6.18-ARM-dts-Add-ixp4xx-Actiontec-MI424WR-device-trees.patch Normal file
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@ -0,0 +1,391 @@
From 85ac6b806993200fe117f4fd047c74784ec6b515 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 22 Aug 2025 19:56:16 +0200
Subject: [PATCH] ARM: dts: Add ixp4xx Actiontec MI424WR device trees
The Actiontex MI424WR is a pretty widespread home router, made
in many different revisions.
Revisions A, C and D are based on IXP42x. We add a device tree
for the A/C variant and one for the D variant as these differ in
the location of the WAN PHY on the MDIO bus, and the ethernet
interfaces for the WAN PHY and the DSA switch are switched around.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/20250822-ixp4xx-mi424wr-dts-v2-3-cc804884474d@linaro.org
---
arch/arm/boot/dts/intel/ixp/Makefile | 2 +
.../ixp/intel-ixp42x-actiontec-mi424wr-ac.dts | 37 +++
.../ixp/intel-ixp42x-actiontec-mi424wr-d.dts | 38 +++
.../ixp/intel-ixp42x-actiontec-mi424wr.dtsi | 272 ++++++++++++++++++
4 files changed, 349 insertions(+)
create mode 100644 arch/arm/boot/dts/intel/ixp/intel-ixp42x-actiontec-mi424wr-ac.dts
create mode 100644 arch/arm/boot/dts/intel/ixp/intel-ixp42x-actiontec-mi424wr-d.dts
create mode 100644 arch/arm/boot/dts/intel/ixp/intel-ixp42x-actiontec-mi424wr.dtsi
--- a/arch/arm/boot/dts/intel/ixp/Makefile
+++ b/arch/arm/boot/dts/intel/ixp/Makefile
@@ -1,5 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
dtb-$(CONFIG_ARCH_IXP4XX) += \
+ intel-ixp42x-actiontec-mi424wr-ac.dtb \
+ intel-ixp42x-actiontec-mi424wr-d.dtb \
intel-ixp42x-linksys-nslu2.dtb \
intel-ixp42x-linksys-wrv54g.dtb \
intel-ixp42x-freecom-fsg-3.dtb \
--- /dev/null
+++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-actiontec-mi424wr-ac.dts
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the IXP425-based Actiontec MI424WR revision A and C
+ * Based on a board file from OpenWrt by Jose Vasconcellos.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x-actiontec-mi424wr.dtsi"
+
+/ {
+ model = "Actiontec MI424WR rev A/C";
+ compatible = "actiontec,mi424wr-ac", "intel,ixp42x";
+
+ soc {
+ /* EthB used for WAN */
+ ethernet@c8009000 {
+ phy-handle = <&phy17>; // 17 on revision A-C
+
+ mdio {
+ phy17: ethernet-phy@17 {
+ /* WAN */
+ reg = <17>;
+ };
+ };
+ };
+
+ /* EthC used for LAN */
+ ethernet@c800a000 {
+ /* Fixed link to the CPU MII port on the KS8995 */
+ fixed-link {
+ speed = <100>;
+ full-duplex;
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-actiontec-mi424wr-d.dts
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the IXP425-based Actiontec MI424WR revision D
+ * Based on a board file from OpenWrt by Jose Vasconcellos.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x-actiontec-mi424wr.dtsi"
+
+/ {
+ model = "Actiontec MI424WR rev D";
+ compatible = "actiontec,mi424wr-d", "intel,ixp42x";
+
+ soc {
+ /* EthB used for LAN */
+ ethernet@c8009000 {
+ /* Fixed link to the CPU MII port on the KS8995 */
+ fixed-link {
+ speed = <100>;
+ full-duplex;
+ };
+
+ mdio {
+ /* PHY ID 0x00221450 */
+ phy5: ethernet-phy@5 {
+ /* WAN */
+ reg = <5>;
+ };
+ };
+ };
+
+ /* EthC used for WAN */
+ ethernet@c800a000 {
+ phy-handle = <&phy5>; // 5 on revision D
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/intel/ixp/intel-ixp42x-actiontec-mi424wr.dtsi
@@ -0,0 +1,272 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the IXP425-based Actiontec MI424WR
+ * Based on a board file from OpenWrt by Jose Vasconcellos.
+ */
+
+#include "intel-ixp42x.dtsi"
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x02000000>;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200n8";
+ stdout-path = "uart1:115200n8";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-wan-coax {
+ color = <LED_COLOR_ID_GREEN>;
+ function = "wan-coax";
+ gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ led-power-alarm {
+ color = <LED_COLOR_ID_RED>;
+ function = LED_FUNCTION_ALARM;
+ gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ led-power {
+ color = <LED_COLOR_ID_GREEN>;
+ function = LED_FUNCTION_POWER;
+ gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+ default-state = "on";
+ linux,default-trigger = "heartbeat";
+ };
+ led-wireless {
+ color = <LED_COLOR_ID_GREEN>;
+ function = LED_FUNCTION_WLAN;
+ gpios = <&gpio1 2 GPIO_ACTIVE_LOW>;
+ default-state = "off";
+ };
+ led-internet-down {
+ color = <LED_COLOR_ID_RED>;
+ function = "internet-down";
+ gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ led-internet-up {
+ color = <LED_COLOR_ID_GREEN>;
+ function = "internet-up";
+ gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ led-lan-coax {
+ color = <LED_COLOR_ID_GREEN>;
+ function = "lan-coax";
+ gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ led-wan-ethernet-alarm {
+ color = <LED_COLOR_ID_RED>;
+ function = "wan-ethernet-alarm";
+ gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ /* The last three LEDs are not mounted but traces exist on the PCB */
+ led-phone-1 {
+ color = <LED_COLOR_ID_GREEN>;
+ function = "phone-1";
+ gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
+ default-state = "off";
+ };
+ led-phone-2 {
+ color = <LED_COLOR_ID_GREEN>;
+ function = "phone-2";
+ gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+ default-state = "off";
+ };
+ led-voip {
+ color = <LED_COLOR_ID_GREEN>;
+ function = "voip";
+ gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+ default-state = "off";
+ };
+ };
+
+ gpio_keys {
+ compatible = "gpio-keys";
+
+ button-reset {
+ wakeup-source;
+ linux,code = <KEY_RESTART>;
+ label = "reset";
+ gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ spi {
+ compatible = "spi-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sck-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+ mosi-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+ miso-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+ cs-gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
+ num-chipselects = <1>;
+
+ ethernet-switch@0 {
+ compatible = "micrel,ks8995";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethernet-port@0 {
+ reg = <0>;
+ label = "lan1";
+ phy-mode = "mii";
+ phy-handle = <&phy1>;
+ };
+ ethernet-port@1 {
+ reg = <1>;
+ label = "lan2";
+ phy-mode = "mii";
+ phy-handle = <&phy2>;
+ };
+ ethernet-port@2 {
+ reg = <2>;
+ label = "lan3";
+ phy-mode = "mii";
+ phy-handle = <&phy3>;
+ };
+ ethernet-port@3 {
+ reg = <3>;
+ label = "lan4";
+ phy-mode = "mii";
+ phy-handle = <&phy4>;
+ };
+ ethernet-port@4 {
+ reg = <4>;
+ ethernet = <&ethc>;
+ phy-mode = "mii";
+ fixed-link {
+ speed = <100>;
+ full-duplex;
+ };
+ };
+
+ };
+ };
+ };
+
+ soc {
+ bus@c4000000 {
+ flash@0,0 {
+ compatible = "intel,ixp4xx-flash", "cfi-flash";
+ bank-width = <2>;
+ /*
+ * 8 MB of Flash in 64 0x20000 sized blocks
+ * mapped in at CS0.
+ */
+ reg = <0 0x00000000 0x0800000>;
+
+ /* Configure expansion bus to allow writes */
+ intel,ixp4xx-eb-write-enable = <1>;
+
+ partitions {
+ compatible = "redboot-fis";
+ fis-index-block = <0x3f>;
+ };
+ };
+ gpio1: gpio@1,0 {
+ /* MMIO GPIO at CS1 */
+ compatible = "intel,ixp4xx-expansion-bus-mmio-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ big-endian;
+ reg = <1 0x00000000 0x2>;
+ reg-names = "dat";
+ /* Expansion bus settings */
+ intel,ixp4xx-eb-write-enable = <1>;
+
+ pci-reset-hog {
+ gpio-hog;
+ gpios = <7 GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "PCI reset";
+ };
+ pstn-relay-hog-1 {
+ gpio-hog;
+ gpios = <11 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "PSTN relay control 1";
+ };
+ pstn-relay-hog-2 {
+ gpio-hog;
+ gpios = <12 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "PSTN relay control 2";
+ };
+ };
+ };
+
+ pci@c0000000 {
+ status = "okay";
+
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0xf800 0 0 7>;
+ interrupt-map =
+ /* IDSEL 13 */
+ <0x6800 0 0 1 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 13 is irq 8 */
+ <0x6800 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 13 is irq 6 */
+ /* IDSEL 14 */
+ <0x7000 0 0 1 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 14 is irq 7 */
+ <0x7000 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 14 is irq 8 */
+ /* IDSEL 15 */
+ <0x7800 0 0 1 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 15 is irq 6 */
+ <0x7800 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>; /* INT B on slot 15 is irq 7 */
+ };
+
+ ethb: ethernet@c8009000 {
+ status = "okay";
+ queue-rx = <&qmgr 3>;
+ queue-txready = <&qmgr 20>;
+ phy-mode = "mii";
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* 1, 2, 3 and 4 are ports on the KS8995 switch */
+ phy1: ethernet-phy@1 {
+ /* LAN1 */
+ reg = <1>;
+ };
+ phy2: ethernet-phy@2 {
+ /* LAN2 */
+ reg = <2>;
+ };
+ phy3: ethernet-phy@3 {
+ /* LAN3 */
+ reg = <3>;
+ };
+ phy4: ethernet-phy@4 {
+ /* LAN4 */
+ reg = <4>;
+ };
+ };
+ };
+
+ ethc: ethernet@c800a000 {
+ status = "okay";
+ queue-rx = <&qmgr 4>;
+ queue-txready = <&qmgr 21>;
+ phy-mode = "mii";
+ };
+ };
+};