linux-kernel - [RFC PATCH 0/3] Introduce reset driver for T-HEAD th1520 SoC

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Date:   Mon,  4 Sep 2023 04:25:56 +0000
From:   Kwanghoon Son <k.son@...sung.com>
To:     p.zabel@...gutronix.de, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        jszhang@...nel.org, guoren@...nel.org, wefu@...hat.com,
        paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, inki.dae@...sung.com
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: [RFC PATCH 0/3] Introduce reset driver for T-HEAD th1520 SoC

This patchset adds initial support for reset driver.
Register information is from vendor kernel [1].
I sent an e-mail to get permission the original author,
but there was no answer. So I upload patch since it has GPL license.

This patch also can be tested with watchdog simply with 
```
		watchdog0: watchdog@...fc30000 {
			compatible = "snps,dw-wdt";
			reg = <0xff 0xefc30000 0x0 0x1000>;
			interrupts = <24 IRQ_TYPE_LEVEL_HIGH>;
			clocks = <&osc>;
			resets = <&rst TH1520_RESET_WDT0>;
			status = "disabled";
		};
```

[1] https://github.com/revyos/thead-kernel.git

Kwanghoon Son (3):
  dt-bindings: reset: Document th1520 reset control
  reset: Add th1520 reset driver support
  riscv: dts: Add th1520 reset device tree

 .../bindings/reset/thead,th1520-reset.yaml    |  39 +++++++
 .../dts/thead/th1520-lichee-module-4a.dtsi    |   4 +
 arch/riscv/boot/dts/thead/th1520.dtsi         |   8 ++
 drivers/reset/Kconfig                         |  10 ++
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-th1520.c                  | 109 ++++++++++++++++++
 include/dt-bindings/reset/th1520-reset.h      |   9 ++
 7 files changed, 180 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml
 create mode 100644 drivers/reset/reset-th1520.c
 create mode 100644 include/dt-bindings/reset/th1520-reset.h

-- 
2.34.1