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Message-ID: <20250625154315.114139-2-s.taishi14142@gmail.com>
Date: Thu, 26 Jun 2025 00:43:15 +0900
From: Taishi Shimizu <s.taishi14142@...il.com>
To: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Hauke Mehrtens <hauke@...ke-m.de>,
Rafal Milecki <zajec5@...il.com>,
Florian Fainelli <florian.fainelli@...adcom.com>
Cc: linux-arm-kernel@...ts.infradead.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
Linus Walleij <linus.walleij@...aro.org>,
Stefan Wahren <wahrenst@....net>,
Taishi Shimizu <s.taishi14142@...il.com>
Subject: [PATCH 2/2] ARM: dts: BCM5301X: Add support for Buffalo WXR-1750DHP
Add initial device tree support for the Buffalo WXR-1750DHP, a consumer Wi-Fi
router based on the Broadcom BCM4708A0 SoC.
Hardware specifications:
* Processor: Broadcom BCM4708A0 dual-core @ 800 MHz
* RAM: DDR3 256 MB
* Ethernet Switch: Broadcom BCM53011 integrated via SRAB
* NAND Flash: 128 MB (8-bit ECC)
* SPI Flash: None
* Ports: 4 LAN Ports, 1 WAN Port
* USB: 1x USB 3.0 Type-A port
Signed-off-by: Taishi Shimizu <s.taishi14142@...il.com>
---
arch/arm/boot/dts/broadcom/Makefile | 1 +
.../broadcom/bcm4708-buffalo-wxr-1750dhp.dts | 134 ++++++++++++++++++
2 files changed, 135 insertions(+)
create mode 100644 arch/arm/boot/dts/broadcom/bcm4708-buffalo-wxr-1750dhp.dts
diff --git a/arch/arm/boot/dts/broadcom/Makefile b/arch/arm/boot/dts/broadcom/Makefile
index 71062ff9adbe..2552e11b5e31 100644
--- a/arch/arm/boot/dts/broadcom/Makefile
+++ b/arch/arm/boot/dts/broadcom/Makefile
@@ -51,6 +51,7 @@ dtb-$(CONFIG_ARCH_BCMBCA) += \
dtb-$(CONFIG_ARCH_BCM_5301X) += \
bcm4708-asus-rt-ac56u.dtb \
bcm4708-asus-rt-ac68u.dtb \
+ bcm4708-buffalo-wxr-1750dhp.dtb \
bcm4708-buffalo-wzr-1750dhp.dtb \
bcm4708-buffalo-wzr-1166dhp.dtb \
bcm4708-buffalo-wzr-1166dhp2.dtb \
diff --git a/arch/arm/boot/dts/broadcom/bcm4708-buffalo-wxr-1750dhp.dts b/arch/arm/boot/dts/broadcom/bcm4708-buffalo-wxr-1750dhp.dts
new file mode 100644
index 000000000000..43a4a8e58b40
--- /dev/null
+++ b/arch/arm/boot/dts/broadcom/bcm4708-buffalo-wxr-1750dhp.dts
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Author: Taishi Shimizu <s.taishi14142@...il.com>
+ */
+
+/dts-v1/;
+
+#include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
+
+/ {
+ compatible = "buffalo,wxr-1750dhp", "brcm,bcm4708";
+ model = "Buffalo WXR-1750DHP";
+
+ chosen {
+ bootargs = "console=ttyS0,115200";
+ };
+
+ memory@0 {
+ reg = <0x00000000 0x08000000>,
+ <0x88000000 0x08000000>;
+ device_type = "memory";
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ button-aoss {
+ label = "AOSS";
+ linux,code = <KEY_WPS_BUTTON>;
+ gpios = <&chipcommon 2 GPIO_ACTIVE_LOW>;
+ };
+
+ /* GPIO 8 and 9 are a tri-state switch button with
+ * ROUTER / AP / WB.
+ */
+ button-bridge {
+ label = "WB";
+ linux,code = <BTN_2>;
+ linux,input-type = <EV_SW>;
+ gpios = <&chipcommon 8 GPIO_ACTIVE_HIGH>;
+ };
+
+ /* GPIO 3 is a switch button with AUTO / MANUAL. */
+ button-manual {
+ label = "MANUAL";
+ linux,code = <BTN_0>;
+ linux,input-type = <EV_SW>;
+ gpios = <&chipcommon 3 GPIO_ACTIVE_HIGH>;
+ };
+
+ button-restart {
+ label = "Reset";
+ linux,code = <KEY_RESTART>;
+ gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
+ };
+
+ button-router {
+ label = "ROUTER";
+ linux,code = <BTN_1>;
+ linux,input-type = <EV_SW>;
+ gpios = <&chipcommon 9 GPIO_ACTIVE_HIGH>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-power0 {
+ label = "bcm53xx:white:power";
+ linux,default-trigger = "default-on";
+ gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
+ };
+
+ led-power1 {
+ label = "bcm53xx:amber:power";
+ gpios = <&chipcommon 6 GPIO_ACTIVE_HIGH>;
+ };
+
+ led-router0 {
+ label = "bcm53xx:amber:router";
+ gpios = <&chipcommon 14 GPIO_ACTIVE_HIGH>;
+ };
+
+ led-router1 {
+ label = "bcm53xx:white:router";
+ gpios = <&chipcommon 15 GPIO_ACTIVE_HIGH>;
+ };
+
+ led-usb {
+ label = "bcm53xx:green:usb";
+ gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
+ };
+
+ led-wan {
+ label = "bcm53xx:white:wan";
+ gpios = <&chipcommon 7 GPIO_ACTIVE_HIGH>;
+ };
+ };
+};
+
+&srab {
+ status = "okay";
+
+ ports {
+ port@0 {
+ label = "wan";
+ };
+
+ port@1 {
+ label = "lan4";
+ };
+
+ port@2 {
+ label = "lan3";
+ };
+
+ port@3 {
+ label = "lan2";
+ };
+
+ port@4 {
+ label = "lan1";
+ };
+ };
+};
+
+&usb3 {
+ vcc-gpio = <&chipcommon 10 GPIO_ACTIVE_HIGH>;
+};
+
+&usb3_phy {
+ status = "okay";
+};
--
2.43.0
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