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Message-Id: <20250325134349.2476458-10-cjd@cjdns.fr>
Date: Tue, 25 Mar 2025 13:43:48 +0000
From: Caleb James DeLisle <cjd@...ns.fr>
To: linux-mips@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
benjamin.larsson@...exis.eu,
Caleb James DeLisle <cjd@...ns.fr>
Subject: [PATCH v2 09/10] mips: dts: Add EcoNet DTS with EN751221 and SmartFiber XP8421-B board
Add DTS files in support of EcoNet platform, including SmartFiber XP8421-B,
a low cost commercially available board based on EN751221.
Signed-off-by: Caleb James DeLisle <cjd@...ns.fr>
---
To my knowledge, evaluation boards from EcoNet are not currently available.
SmartFiber XP8421-B is currently manufactured, low cost, and can be
purchased as single units by the general public.
---
arch/mips/boot/dts/Makefile | 1 +
arch/mips/boot/dts/econet/Makefile | 2 +
arch/mips/boot/dts/econet/en751221.dtsi | 62 +++++++++++++++++++
.../econet/en751221_smartfiber_xp8421-b.dts | 19 ++++++
arch/mips/econet/Kconfig | 11 ++++
5 files changed, 95 insertions(+)
create mode 100644 arch/mips/boot/dts/econet/Makefile
create mode 100644 arch/mips/boot/dts/econet/en751221.dtsi
create mode 100644 arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts
diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
index ff468439a8c4..7375c6ced82b 100644
--- a/arch/mips/boot/dts/Makefile
+++ b/arch/mips/boot/dts/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
subdir-$(CONFIG_BMIPS_GENERIC) += brcm
subdir-$(CONFIG_CAVIUM_OCTEON_SOC) += cavium-octeon
+subdir-$(CONFIG_ECONET) += econet
subdir-$(CONFIG_EYEQ) += mobileye
subdir-$(CONFIG_FIT_IMAGE_FDT_MARDUK) += img
subdir-$(CONFIG_FIT_IMAGE_FDT_BOSTON) += img
diff --git a/arch/mips/boot/dts/econet/Makefile b/arch/mips/boot/dts/econet/Makefile
new file mode 100644
index 000000000000..b467d5624e39
--- /dev/null
+++ b/arch/mips/boot/dts/econet/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_DTB_ECONET_SMARTFIBER_XP8421_B) += en751221_smartfiber_xp8421-b.dtb
diff --git a/arch/mips/boot/dts/econet/en751221.dtsi b/arch/mips/boot/dts/econet/en751221.dtsi
new file mode 100644
index 000000000000..c26b3a1eea92
--- /dev/null
+++ b/arch/mips/boot/dts/econet/en751221.dtsi
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/dts-v1/;
+
+/ {
+ compatible = "econet,en751221";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ hpt_clock: clock {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <200000000>; /* 200 MHz */
+ };
+
+ cpus: cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "mips,mips24KEc";
+ reg = <0>;
+ };
+ };
+
+ cpuintc: interrupt-controller {
+ #address-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "mti,cpu-interrupt-controller";
+ };
+
+ intc: interrupt-controller@...40000 {
+ compatible = "econet,en751221-intc";
+ reg = <0x1fb40000 0x100>;
+ interrupt-parent = <&cpuintc>;
+ interrupts = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ econet,shadow-interrupts = <7 2>, <8 3>, <13 12>, <30 29>;
+ };
+
+ uart: serial@...f0000 {
+ compatible = "ns16550";
+ reg = <0x1fbf0000 0x30>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ interrupt-parent = <&intc>;
+ interrupts = <0>;
+ clock-frequency = <1843200>;
+ };
+
+ timer_hpt: timer@...f0400 {
+ compatible = "econet,en751221-timer";
+ reg = <0x1fbf0400 0x100>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <30>;
+ clocks = <&hpt_clock>;
+ };
+};
diff --git a/arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts b/arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts
new file mode 100644
index 000000000000..9289dcb2a632
--- /dev/null
+++ b/arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/dts-v1/;
+
+#include "en751221.dtsi"
+
+/ {
+ model = "SmartFiber XP8421-B";
+ compatible = "smartfiber,xp8421-b", "econet,en751221";
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x1c000000>;
+ };
+
+ chosen {
+ stdout-path = "/serial@...f0000:115200";
+ linux,usable-memory-range = <0x00020000 0x1bfe0000>;
+ };
+};
diff --git a/arch/mips/econet/Kconfig b/arch/mips/econet/Kconfig
index d03f90f3daa4..fd69884cc9a8 100644
--- a/arch/mips/econet/Kconfig
+++ b/arch/mips/econet/Kconfig
@@ -32,6 +32,17 @@ choice
config DTB_ECONET_NONE
bool "None"
+
+ config DTB_ECONET_SMARTFIBER_XP8421_B
+ bool "EN751221 SmartFiber XP8421-B"
+ depends on SOC_ECONET_EN751221
+ select BUILTIN_DTB
+ help
+ The SmartFiber XP8421-B is a device based on the EN751221 SoC.
+ It has 512MB of memory and 256MB of NAND flash. This kernel
+ needs only an appended initramfs to boot. It can be loaded
+ through XMODEM and booted from memory in the bootloader, or
+ it can be packed in tclinux.trx format and written to flash.
endchoice
endif
--
2.39.5
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