[PATCH v2 00/10] Add EcoNet EN751221 MIPS platform support
From: Caleb James DeLisle
Date: Tue Mar 25 2025 - 09:51:40 EST
EcoNet MIPS SoCs are big endian machines based on 34Kc and 1004Kc
processors. They are found in xDSL and xPON modems, and contain PCM
(VoIP), Ethernet, USB, GPIO, I2C, SPI (Flash), UART, and PCIe.
The EcoNet MIPS SoCs are divided broadly into two families, the
EN751221 family based on the 34Kc, and the EN751627 family based on
the 1004Kc. Individual SoCs within a family are very similar, only
with different peripherals.
This patchset adds basic "boots to a console" support for the EN751221
family and adds SmartFiber XP8421-B, a low cost commercially available
board that is useful for testing and development.
Note that Airoha (AN7523, AN7581) is similar to EcoNet in terms of
peripherals, and for historical reasons Airoha chips are sometimes
referred to with the EN75xx prefix. However this is a different
platform because Airoha chips are ARM based.
This patchset is against mips-next.
v1 -> v2
* Codestyle
- Apply codestyle from "The tip tree handbook" and recommendations
- Remove "_rai" and "_m" symbol suffixes which are not standard
* irq-econet-en751221.c
- Use cleanup.h _guard() and _free()
- Separate irq_domain_ops from irq_chip, eliminating econet_intc struct
- Remove irqsave in econet_wreg, irqs are already disabled in mask/unmask
- Add explainatory comments
- Refactor shadow logic for clarity, e.g. INTC_NO_SHADOW -> NOT_PERCPU
- Improve error handling in case of invalid DTS
* econet,timer-hpt.yaml
- Rename to econet,timer-en751221.yaml
- Impose rule: "reg" must have 1 item on EN751221 and 2 on EN751627
* timer-econet-hpt.c
- Rename to timer-econet-en751221.c to follow naming scheme from DT
* econet,en751221-intc.yaml
- Fix validation error from required: interrupt-parent
- shadow-interrupts -> switch to uint32-matrix for list of pairs
* MAINTAINERS -> Fixed accidental F: MAINTAINERS
* Replace "test image" with device SmartFiber-XP8421-B
* Restructure arch/mips/econet/Kconfig per arch/mips/ralink example
* v1->v2 diff is offered for reference:
- https://gist.github.com/cjdelisle/bb3acab78b5f70dcdfe5dd6338293efe
Caleb James DeLisle (10):
dt-bindings: vendor-prefixes: Add EcoNet
dt-bindings: interrupt-controller: Add EcoNet EN751221 INTC
irqchip: Add EcoNet EN751221 INTC
dt-bindings: timer: Add EcoNet EN751221 "HPT" CPU Timer
clocksource/drivers: Add EcoNet Timer HPT driver
dt-bindings: mips: Add EcoNet platform binding
mips: Add EcoNet MIPS platform support
dt-bindings: vendor-prefixes: Add SmartFiber
mips: dts: Add EcoNet DTS with EN751221 and SmartFiber XP8421-B board
MAINTAINERS: Add entry for newly added EcoNet platform.
.../econet,en751221-intc.yaml | 78 +++++
.../devicetree/bindings/mips/econet.yaml | 26 ++
.../bindings/timer/econet,en751221-timer.yaml | 78 +++++
.../devicetree/bindings/vendor-prefixes.yaml | 4 +
MAINTAINERS | 12 +
arch/mips/Kbuild.platforms | 1 +
arch/mips/Kconfig | 25 ++
arch/mips/boot/compressed/uart-16550.c | 5 +
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 | 48 +++
arch/mips/econet/Makefile | 2 +
arch/mips/econet/Platform | 5 +
arch/mips/econet/init.c | 78 +++++
drivers/clocksource/Kconfig | 8 +
drivers/clocksource/Makefile | 1 +
drivers/clocksource/timer-econet-en751221.c | 216 ++++++++++++
drivers/irqchip/Kconfig | 5 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-econet-en751221.c | 309 ++++++++++++++++++
22 files changed, 986 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/econet,en751221-intc.yaml
create mode 100644 Documentation/devicetree/bindings/mips/econet.yaml
create mode 100644 Documentation/devicetree/bindings/timer/econet,en751221-timer.yaml
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
create mode 100644 arch/mips/econet/Kconfig
create mode 100644 arch/mips/econet/Makefile
create mode 100644 arch/mips/econet/Platform
create mode 100644 arch/mips/econet/init.c
create mode 100644 drivers/clocksource/timer-econet-en751221.c
create mode 100644 drivers/irqchip/irq-econet-en751221.c
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2.39.5