[PATCH 00/13] MIPS: add support for the Microsemi MIPS SoCs

[PATCH 00/13] MIPS: add support for the Microsemi MIPS SoCs

[Alexandre Belloni]

Hi,

This patch series adds initial support for the Microsemi MIPS SoCs. It
is currently focusing on the Microsemi Ocelot (VSC7513, VSC7514).

It adds support for the IRQ controller, pinmux and gpio controller and
reset control.

This produces a kernel that can boot to the console.

This is a single series for reference but it can also be taken
separately by each maintainer as each drivers are independant.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Cc: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org


Alexandre Belloni (13):
  dt-bindings: Add vendor prefix for Microsemi Corporation
  dt-bindings: interrupt-controller: Add binding for the Microsemi
    Ocelot interrupt controller
  irqchip: Add a driver for the Microsemi Ocelot controller
  dt-bindings: pinctrl: Add bindings for Microsemi Ocelot
  pinctrl: Add Microsemi Ocelot SoC driver
  dt-bindings: power: reset: Document ocelot-reset binding
  power: reset: Add a driver for the Microsemi Ocelot reset
  dt-bindings: mips: Add bindings for Microsemi SoCs
  MIPS: mscc: Add initial support for Microsemi MIPS SoCs
  MIPS: mscc: add ocelot dtsi
  MIPS: mscc: add ocelot PCB123 device tree
  MIPS: defconfigs: add a defconfig for Microsemi SoCs
  MAINTAINERS: Add entry for Microsemi MIPS SoCs

 .../interrupt-controller/mscc,ocelot-icpu-intr.txt |  22 +
 Documentation/devicetree/bindings/mips/mscc.txt    |   6 +
 .../bindings/pinctrl/mscc,ocelot-pinctrl.txt       |  39 ++
 .../bindings/power/reset/ocelot-reset.txt          |  24 +
 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 MAINTAINERS                                        |   7 +
 arch/mips/Kbuild.platforms                         |   1 +
 arch/mips/Kconfig                                  |  24 +
 arch/mips/boot/dts/Makefile                        |   1 +
 arch/mips/boot/dts/mscc/Makefile                   |   6 +
 arch/mips/boot/dts/mscc/ocelot.dtsi                | 118 +++++
 arch/mips/boot/dts/mscc/ocelot_pcb123.dts          |  30 ++
 arch/mips/configs/mscc_defconfig                   |  84 ++++
 arch/mips/mscc/Makefile                            |  11 +
 arch/mips/mscc/Platform                            |  12 +
 arch/mips/mscc/setup.c                             | 106 +++++
 drivers/irqchip/Kconfig                            |   5 +
 drivers/irqchip/Makefile                           |   1 +
 drivers/irqchip/irq-mscc-ocelot.c                  | 109 +++++
 drivers/pinctrl/Kconfig                            |  10 +
 drivers/pinctrl/Makefile                           |   1 +
 drivers/pinctrl/pinctrl-ocelot.c                   | 505 +++++++++++++++++++++
 drivers/power/reset/Kconfig                        |   7 +
 drivers/power/reset/Makefile                       |   1 +
 drivers/power/reset/ocelot-reset.c                 |  87 ++++
 25 files changed, 1218 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/mscc,ocelot-icpu-intr.txt
 create mode 100644 Documentation/devicetree/bindings/mips/mscc.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/mscc,ocelot-pinctrl.txt
 create mode 100644 Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
 create mode 100644 arch/mips/boot/dts/mscc/Makefile
 create mode 100644 arch/mips/boot/dts/mscc/ocelot.dtsi
 create mode 100644 arch/mips/boot/dts/mscc/ocelot_pcb123.dts
 create mode 100644 arch/mips/configs/mscc_defconfig
 create mode 100644 arch/mips/mscc/Makefile
 create mode 100644 arch/mips/mscc/Platform
 create mode 100644 arch/mips/mscc/setup.c
 create mode 100644 drivers/irqchip/irq-mscc-ocelot.c
 create mode 100644 drivers/pinctrl/pinctrl-ocelot.c
 create mode 100644 drivers/power/reset/ocelot-reset.c

-- 
2.15.0

[PATCH 01/13] dt-bindings: Add vendor prefix for Microsemi Corporation

[Alexandre Belloni]

Microsemi Corporation provides semiconductor and system solutions for
aerospace & defense, communications, data center and industrial markets.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org


 Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 0994bdd82cd3..7b880084fd37 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -219,6 +219,7 @@ motorola	Motorola, Inc.
 moxa	Moxa Inc.
 mpl	MPL AG
 mqmaker	mqmaker Inc.
+mscc	Microsemi Corporation
 msi	Micro-Star International Co. Ltd.
 mti	Imagination Technologies Ltd. (formerly MIPS Technologies Inc.)
 multi-inno	Multi-Inno Technology Co.,Ltd
-- 
2.15.0

Re: [PATCH 01/13] dt-bindings: Add vendor prefix for Microsemi Corporation

[James Hogan]

[-- Attachment #1: Type: text/plain, Size: 1355 bytes --]

On Tue, Nov 28, 2017 at 04:26:31PM +0100, Alexandre Belloni wrote:
> Microsemi Corporation provides semiconductor and system solutions for
> aerospace & defense, communications, data center and industrial markets.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> ---
> Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

Nit: Usually the Cc list goes before the --- line so that it is included
in the git history (i.e. these people had the opportunity to comment).

Cheers
James

> 
> 
>  Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index 0994bdd82cd3..7b880084fd37 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -219,6 +219,7 @@ motorola	Motorola, Inc.
>  moxa	Moxa Inc.
>  mpl	MPL AG
>  mqmaker	mqmaker Inc.
> +mscc	Microsemi Corporation
>  msi	Micro-Star International Co. Ltd.
>  mti	Imagination Technologies Ltd. (formerly MIPS Technologies Inc.)
>  multi-inno	Multi-Inno Technology Co.,Ltd
> -- 
> 2.15.0
> 
> 

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Re: [PATCH 01/13] dt-bindings: Add vendor prefix for Microsemi Corporation

[Alexandre Belloni]

On 28/11/2017 at 16:10:14 +0000, James Hogan wrote:
> On Tue, Nov 28, 2017 at 04:26:31PM +0100, Alexandre Belloni wrote:
> > Microsemi Corporation provides semiconductor and system solutions for
> > aerospace & defense, communications, data center and industrial markets.
> > 
> > Signed-off-by: Alexandre Belloni <alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> > ---
> > Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> > Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> 
> Nit: Usually the Cc list goes before the --- line so that it is included
> in the git history (i.e. these people had the opportunity to comment).
> 

Ok, it depends on the maintainer, some people prefer leaving that out of commit log.
I'm fine with adding those back in.

> Cheers
> James
> 
> > 
> > 
> >  Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> > index 0994bdd82cd3..7b880084fd37 100644
> > --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> > +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> > @@ -219,6 +219,7 @@ motorola	Motorola, Inc.
> >  moxa	Moxa Inc.
> >  mpl	MPL AG
> >  mqmaker	mqmaker Inc.
> > +mscc	Microsemi Corporation
> >  msi	Micro-Star International Co. Ltd.
> >  mti	Imagination Technologies Ltd. (formerly MIPS Technologies Inc.)
> >  multi-inno	Multi-Inno Technology Co.,Ltd
> > -- 
> > 2.15.0
> > 
> > 



-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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Re: [PATCH 01/13] dt-bindings: Add vendor prefix for Microsemi Corporation

[Rob Herring]

On Tue, Nov 28, 2017 at 05:22:45PM +0100, Alexandre Belloni wrote:
> On 28/11/2017 at 16:10:14 +0000, James Hogan wrote:
> > On Tue, Nov 28, 2017 at 04:26:31PM +0100, Alexandre Belloni wrote:
> > > Microsemi Corporation provides semiconductor and system solutions for
> > > aerospace & defense, communications, data center and industrial markets.
> > > 
> > > Signed-off-by: Alexandre Belloni <alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> > > ---
> > > Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> > > Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > 
> > Nit: Usually the Cc list goes before the --- line so that it is included
> > in the git history (i.e. these people had the opportunity to comment).
> > 
> 
> Ok, it depends on the maintainer, some people prefer leaving that out of commit log.
> I'm fine with adding those back in.

Really? First, I've heard that.

In any case,

Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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[PATCH 02/13] dt-bindings: interrupt-controller: Add binding for the Microsemi Ocelot interrupt controller

[Alexandre Belloni]

Add the Device Tree binding documentation for the Microsemi Ocelot
interrupt controller that is part of the ICPU. It is connected directly to
the MIPS core interrupt controller.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>

 .../interrupt-controller/mscc,ocelot-icpu-intr.txt | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/mscc,ocelot-icpu-intr.txt

diff --git a/Documentation/devicetree/bindings/interrupt-controller/mscc,ocelot-icpu-intr.txt b/Documentation/devicetree/bindings/interrupt-controller/mscc,ocelot-icpu-intr.txt
new file mode 100644
index 000000000000..b47a8a02b17b
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/mscc,ocelot-icpu-intr.txt
@@ -0,0 +1,22 @@
+Microsemi Ocelot SoC ICPU Interrupt Controller
+
+Required properties:
+
+- compatible : should be "mscc,ocelot-icpu-intr"
+- reg : Specifies base physical address and size of the registers.
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode an
+  interrupt source. The value shall be 1.
+- interrupt-parent : phandle of the CPU interrupt controller.
+- interrupts : Specifies the CPU interrupt the controller is connected to.
+
+Example:
+
+		intc: interrupt-controller@70000070 {
+			compatible = "mscc,ocelot-icpu-intr";
+			reg = <0x70000070 0x70>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+			interrupt-parent = <&cpuintc>;
+			interrupts = <2>;
+		};
-- 
2.15.0

Re: [PATCH 02/13] dt-bindings: interrupt-controller: Add binding for the Microsemi Ocelot interrupt controller

[Rob Herring]

On Tue, Nov 28, 2017 at 04:26:32PM +0100, Alexandre Belloni wrote:
> Add the Device Tree binding documentation for the Microsemi Ocelot
> interrupt controller that is part of the ICPU. It is connected directly to
> the MIPS core interrupt controller.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> ---
> Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> To: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
> Cc: Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>
> 
>  .../interrupt-controller/mscc,ocelot-icpu-intr.txt | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/mscc,ocelot-icpu-intr.txt

Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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[PATCH 04/13] dt-bindings: pinctrl: Add bindings for Microsemi Ocelot

[Alexandre Belloni]

Add the documentation for the Microsemi Ocelot pinmuxing and gpio
controller.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
To: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org

 .../bindings/pinctrl/mscc,ocelot-pinctrl.txt       | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/mscc,ocelot-pinctrl.txt

diff --git a/Documentation/devicetree/bindings/pinctrl/mscc,ocelot-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/mscc,ocelot-pinctrl.txt
new file mode 100644
index 000000000000..24a210e0c59a
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/mscc,ocelot-pinctrl.txt
@@ -0,0 +1,39 @@
+Microsemi Ocelot pin controller Device Tree Bindings
+----------------------------------------------------
+
+Required properties:
+ - compatible		: Should be "mscc,ocelot-pinctrl"
+ - reg			: Address and length of the register set for the device
+ - gpio-controller	: Indicates this device is a GPIO controller
+ - #gpio-cells		: Must be 2.
+			  The first cell is the pin number and the
+			  second cell specifies GPIO flags, as defined in
+			  <dt-bindings/gpio/gpio.h>.
+ - gpio-ranges		: Range of pins managed by the GPIO controller.
+
+
+The ocelot-pinctrl driver uses the generic pin multiplexing and generic pin
+configuration documented in pinctrl-bindings.txt.
+
+The following generic properties are supported:
+ - function
+ - pins
+
+Example:
+	gpio: pinctrl@71070034 {
+		compatible = "mscc,ocelot-pinctrl";
+		reg = <0x71070034 0x28>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-ranges = <&gpio 0 0 22>;
+
+		uart_pins: uart-pins {
+				pins = "GPIO_6", "GPIO_7";
+				function = "uart";
+		};
+
+		uart2_pins: uart2-pins {
+				pins = "GPIO_12", "GPIO_13";
+				function = "uart2";
+		};
+	};
-- 
2.15.0

Re: [PATCH 04/13] dt-bindings: pinctrl: Add bindings for Microsemi Ocelot

[Rob Herring]

On Tue, Nov 28, 2017 at 04:26:34PM +0100, Alexandre Belloni wrote:
> Add the documentation for the Microsemi Ocelot pinmuxing and gpio
> controller.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
> ---
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: devicetree@vger.kernel.org
> To: Linus Walleij <linus.walleij@linaro.org>
> Cc: linux-gpio@vger.kernel.org
> 
>  .../bindings/pinctrl/mscc,ocelot-pinctrl.txt       | 39 ++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/mscc,ocelot-pinctrl.txt

Acked-by: Rob Herring <robh@kernel.org>

[PATCH 06/13] dt-bindings: power: reset: Document ocelot-reset binding

[Alexandre Belloni]

Add binding documentation for the Microsemi Ocelot reset block.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
To: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org

 .../bindings/power/reset/ocelot-reset.txt          | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/reset/ocelot-reset.txt

diff --git a/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
new file mode 100644
index 000000000000..2d3f2c21fadd
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
@@ -0,0 +1,24 @@
+Microsemi Ocelot reset driver
+
+The DEVCPU_GCB:CHIP_REGS have a SOFT_RST register that can be used to reset the
+SoC MIPS core.
+
+Required Properties:
+ - compatible: "mscc,ocelot-chip-reset"
+ - mscc,cpucontrol: phandle to the CPU system control syscon block
+
+Example:
+		cpu_ctrl: syscon@70000000 {
+			compatible = "syscon";
+			reg = <0x70000000 0x2c>;
+		};
+
+		syscon@71070000 {
+			compatible = "simple-mfd", "syscon";
+			reg = <0x71070000 0x1c>;
+
+			reset {
+				compatible = "mscc,ocelot-chip-reset";
+				mscc,cpucontrol = <&cpu_ctrl>;
+			};
+		};
-- 
2.15.0

Re: [PATCH 06/13] dt-bindings: power: reset: Document ocelot-reset binding

[Rob Herring]

On Tue, Nov 28, 2017 at 04:26:36PM +0100, Alexandre Belloni wrote:
> Add binding documentation for the Microsemi Ocelot reset block.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
> ---
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: devicetree@vger.kernel.org
> To: Sebastian Reichel <sre@kernel.org>
> Cc: linux-pm@vger.kernel.org
> 
>  .../bindings/power/reset/ocelot-reset.txt          | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
> new file mode 100644
> index 000000000000..2d3f2c21fadd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt
> @@ -0,0 +1,24 @@
> +Microsemi Ocelot reset driver

Bindings are not drivers.

> +
> +The DEVCPU_GCB:CHIP_REGS have a SOFT_RST register that can be used to reset the
> +SoC MIPS core.
> +
> +Required Properties:
> + - compatible: "mscc,ocelot-chip-reset"
> + - mscc,cpucontrol: phandle to the CPU system control syscon block
> +
> +Example:
> +		cpu_ctrl: syscon@70000000 {
> +			compatible = "syscon";

syscon alone is not valid.

> +			reg = <0x70000000 0x2c>;
> +		};
> +
> +		syscon@71070000 {
> +			compatible = "simple-mfd", "syscon";

SoC specific compatible?

> +			reg = <0x71070000 0x1c>;
> +
> +			reset {
> +				compatible = "mscc,ocelot-chip-reset";
> +				mscc,cpucontrol = <&cpu_ctrl>;

This looks strange. A syscon pointing to another syscon?

Doesn't look like you even need this node, but hard to know if you don't 
document the parent node completely (i.e. what are all the functions in 
this syscon).

> +			};
> +		};
> -- 
> 2.15.0
> 

[PATCH 08/13] dt-bindings: mips: Add bindings for Microsemi SoCs

[Alexandre Belloni]

Add bindings for Microsemi SoCs. Currently only Ocelot is supported.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org

 Documentation/devicetree/bindings/mips/mscc.txt | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mips/mscc.txt

diff --git a/Documentation/devicetree/bindings/mips/mscc.txt b/Documentation/devicetree/bindings/mips/mscc.txt
new file mode 100644
index 000000000000..2c52e76b7142
--- /dev/null
+++ b/Documentation/devicetree/bindings/mips/mscc.txt
@@ -0,0 +1,6 @@
+* Microsemi MIPS CPUs
+
+Required properties:
+- compatible: "brcm,ocelot"
+
+- mips-hpt-frequency: CPU counter frequency.
-- 
2.15.0

Re: [PATCH 08/13] dt-bindings: mips: Add bindings for Microsemi SoCs

[Florian Fainelli]

On 11/28/2017 07:26 AM, Alexandre Belloni wrote:
> Add bindings for Microsemi SoCs. Currently only Ocelot is supported.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> ---
> Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> 
>  Documentation/devicetree/bindings/mips/mscc.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mips/mscc.txt
> 
> diff --git a/Documentation/devicetree/bindings/mips/mscc.txt b/Documentation/devicetree/bindings/mips/mscc.txt
> new file mode 100644
> index 000000000000..2c52e76b7142
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mips/mscc.txt
> @@ -0,0 +1,6 @@
> +* Microsemi MIPS CPUs
> +
> +Required properties:
> +- compatible: "brcm,ocelot"

You probably intended to use mscc,ocelot here, right?
-- 
Florian
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