[PATCH v3 0/2] Add Initial Device Tree for RZ/A2

[PATCH v3 0/2] Add Initial Device Tree for RZ/A2

[Chris Brandt]

Add a Device Tree for RZ/A2 and the existing eval board.

Once these get approved, I'll start piling on the other drivers in
another patch series

NOTE:
Since Rob is currently converting shmobile.txt to renesas.yaml,
I'll wait till renesas.yaml hits -next, then add this RZ/A2M EVB
board (it's too confusing to me to figure out how to make a patch
series using multiple different trees)

Chris Brandt (2):
  ARM: dts: r7s9210: Initial SoC device tree
  ARM: dts: r7s9210-rza2mevb: Add support for RZ/A2M EVB

 arch/arm/boot/dts/Makefile             |   1 +
 arch/arm/boot/dts/r7s9210-rza2mevb.dts |  82 +++++++++++++
 arch/arm/boot/dts/r7s9210.dtsi         | 204 +++++++++++++++++++++++++++++++++
 3 files changed, 287 insertions(+)
 create mode 100644 arch/arm/boot/dts/r7s9210-rza2mevb.dts
 create mode 100644 arch/arm/boot/dts/r7s9210.dtsi

-- 
2.16.1

[PATCH v3 1/2] ARM: dts: r7s9210: Initial SoC device tree

[Chris Brandt]

Basic support for the RZ/A2 (R7S9210) SoC.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
---
v2:
 * Fixed cpg node name to match reg address
 * Removed the clocks subnode
 * SCIF register range 18 to 0x18
 * Removed 'reset-cells' from cpg because resets not supported (yet?)
 * Sorted nodes by address (per group of device
---
 arch/arm/boot/dts/r7s9210.dtsi | 204 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 204 insertions(+)
 create mode 100644 arch/arm/boot/dts/r7s9210.dtsi

diff --git a/arch/arm/boot/dts/r7s9210.dtsi b/arch/arm/boot/dts/r7s9210.dtsi
new file mode 100644
index 000000000000..2b589226895e
--- /dev/null
+++ b/arch/arm/boot/dts/r7s9210.dtsi
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the R7S9210 SoC
+ *
+ * Copyright (C) 2018 Renesas Electronics Corporation
+ *
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/r7s9210-cpg-mssr.h>
+
+/ {
+	compatible = "renesas,r7s9210";
+	interrupt-parent = <&gic>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	bsid: chipid@fcfe8004 {
+		compatible = "renesas,bsid";
+		reg = <0xfcfe8004 4>;
+	};
+
+	/* External clocks */
+	extal_clk: extal {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		/* Value must be set by board */
+		clock-frequency = <0>;
+	};
+
+	rtc_x1_clk: rtc_x1 {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		/* If clk present, value (32678) must be set by board */
+		clock-frequency = <0>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a9";
+			reg = <0>;
+			clock-frequency = <528000000>;
+			next-level-cache = <&L2>;
+		};
+	};
+
+	L2: cache-controller@1f003000 {
+		compatible = "arm,pl310-cache";
+		reg = <0x1f003000 0x1000>;
+		interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
+		arm,early-bresp-disable;
+		arm,full-line-zero-disable;
+		cache-unified;
+		cache-level = <2>;
+	};
+
+	gic: interrupt-controller@e8221000 {
+		compatible = "arm,gic-400";
+		#interrupt-cells = <3>;
+		#address-cells = <0>;
+		interrupt-controller;
+		reg = <0xe8221000 0x1000>,
+		      <0xe8222000 0x1000>;
+	};
+
+	cpg: clock-controller@fcfe0010 {
+		compatible = "renesas,r7s9210-cpg-mssr";
+		reg = <0xfcfe0010 0x455>;
+		clocks = <&extal_clk>;
+		clock-names = "extal";
+		#clock-cells = <2>;
+		#power-domain-cells = <0>;
+	};
+
+	wdt: watchdog@fcfe7000 {
+		compatible = "renesas,r7s9210-wdt", "renesas,rza-wdt";
+		reg = <0xfcfe7000 0x26>;
+		interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cpg CPG_CORE R7S9210_CLK_P0>;
+	};
+
+	pinctrl: pin-controller@fcffe000 {
+		compatible = "renesas,r7s9210-pinctrl";
+		reg = <0xfcffe000 0x1000>;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-ranges = <&pinctrl 0 0 176>;
+	};
+
+	scif0: serial@e8007000 {
+		compatible = "renesas,scif-r7s9210";
+		reg = <0xe8007000 0x18>;
+		interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 266 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 267 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
+		clocks = <&cpg CPG_MOD 47>;
+		clock-names = "fck";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	scif1: serial@e8007800 {
+		compatible = "renesas,scif-r7s9210";
+		reg = <0xe8007800 0x18>;
+		interrupts = <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 273 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
+		clocks = <&cpg CPG_MOD 46>;
+		clock-names = "fck";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	scif2: serial@e8008000 {
+		compatible = "renesas,scif-r7s9210";
+		reg = <0xe8008000 0x18>;
+		interrupts = <GIC_SPI 277 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 279 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 277 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 280 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 280 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
+		clocks = <&cpg CPG_MOD 45>;
+		clock-names = "fck";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	scif3: serial@e8008800 {
+		compatible = "renesas,scif-r7s9210";
+		reg = <0xe8008800 0x18>;
+		interrupts = <GIC_SPI 283 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 284 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 285 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 283 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 286 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 286 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
+		clocks = <&cpg CPG_MOD 44>;
+		clock-names = "fck";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	scif4: serial@e8009000 {
+		compatible = "renesas,scif-r7s9210";
+		reg = <0xe8009000 0x18>;
+		interrupts = <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 290 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 291 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 292 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 292 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
+		clocks = <&cpg CPG_MOD 43>;
+		clock-names = "fck";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	ostm0: timer@e803b000 {
+		compatible = "renesas,r7s9210-ostm", "renesas,ostm";
+		reg = <0xe803b000 0x30>;
+		interrupts = <GIC_SPI 56 IRQ_TYPE_EDGE_RISING>;
+		clocks = <&cpg CPG_MOD 36>;
+		clock-names = "ostm0";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	ostm1: timer@e803c000 {
+		compatible = "renesas,r7s9210-ostm", "renesas,ostm";
+		reg = <0xe803c000 0x30>;
+		interrupts = <GIC_SPI 57 IRQ_TYPE_EDGE_RISING>;
+		clocks = <&cpg CPG_MOD 35>;
+		clock-names = "ostm1";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+
+	ostm2: timer@e803d000 {
+		compatible = "renesas,r7s9210-ostm", "renesas,ostm";
+		reg = <0xe803d000 0x30>;
+		interrupts = <GIC_SPI 58 IRQ_TYPE_EDGE_RISING>;
+		clocks = <&cpg CPG_MOD 34>;
+		clock-names = "ostm2";
+		power-domains = <&cpg>;
+		status = "disabled";
+	};
+};
-- 
2.16.1

Re: [PATCH v3 1/2] ARM: dts: r7s9210: Initial SoC device tree

[Rob Herring]

On Mon, Dec 17, 2018 at 09:43:23AM -0500, Chris Brandt wrote:
> Basic support for the RZ/A2 (R7S9210) SoC.
> 
> Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
> ---
> v2:
>  * Fixed cpg node name to match reg address
>  * Removed the clocks subnode
>  * SCIF register range 18 to 0x18
>  * Removed 'reset-cells' from cpg because resets not supported (yet?)
>  * Sorted nodes by address (per group of device
> ---
>  arch/arm/boot/dts/r7s9210.dtsi | 204 +++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 204 insertions(+)
>  create mode 100644 arch/arm/boot/dts/r7s9210.dtsi
> 
> diff --git a/arch/arm/boot/dts/r7s9210.dtsi b/arch/arm/boot/dts/r7s9210.dtsi
> new file mode 100644
> index 000000000000..2b589226895e
> --- /dev/null
> +++ b/arch/arm/boot/dts/r7s9210.dtsi
> @@ -0,0 +1,204 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree Source for the R7S9210 SoC
> + *
> + * Copyright (C) 2018 Renesas Electronics Corporation
> + *
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/r7s9210-cpg-mssr.h>
> +
> +/ {
> +	compatible = "renesas,r7s9210";
> +	interrupt-parent = <&gic>;
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +
> +	bsid: chipid@fcfe8004 {

Put all the mmio peripherals under a simple-bus node or nodes.

> +		compatible = "renesas,bsid";
> +		reg = <0xfcfe8004 4>;
> +	};
> +
> +	/* External clocks */
> +	extal_clk: extal {
> +		#clock-cells = <0>;
> +		compatible = "fixed-clock";
> +		/* Value must be set by board */
> +		clock-frequency = <0>;
> +	};
> +
> +	rtc_x1_clk: rtc_x1 {
> +		#clock-cells = <0>;
> +		compatible = "fixed-clock";
> +		/* If clk present, value (32678) must be set by board */
> +		clock-frequency = <0>;
> +	};
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a9";
> +			reg = <0>;
> +			clock-frequency = <528000000>;
> +			next-level-cache = <&L2>;
> +		};
> +	};
> +
> +	L2: cache-controller@1f003000 {
> +		compatible = "arm,pl310-cache";
> +		reg = <0x1f003000 0x1000>;
> +		interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> +		arm,early-bresp-disable;
> +		arm,full-line-zero-disable;
> +		cache-unified;
> +		cache-level = <2>;
> +	};
> +
> +	gic: interrupt-controller@e8221000 {
> +		compatible = "arm,gic-400";

Kind of strange that a single core A9 uses an external GIC rather than 
the built-in one.

> +		#interrupt-cells = <3>;
> +		#address-cells = <0>;
> +		interrupt-controller;
> +		reg = <0xe8221000 0x1000>,
> +		      <0xe8222000 0x1000>;
> +	};
> +
> +	cpg: clock-controller@fcfe0010 {
> +		compatible = "renesas,r7s9210-cpg-mssr";
> +		reg = <0xfcfe0010 0x455>;
> +		clocks = <&extal_clk>;
> +		clock-names = "extal";
> +		#clock-cells = <2>;
> +		#power-domain-cells = <0>;
> +	};
> +
> +	wdt: watchdog@fcfe7000 {
> +		compatible = "renesas,r7s9210-wdt", "renesas,rza-wdt";
> +		reg = <0xfcfe7000 0x26>;
> +		interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&cpg CPG_CORE R7S9210_CLK_P0>;
> +	};
> +
> +	pinctrl: pin-controller@fcffe000 {
> +		compatible = "renesas,r7s9210-pinctrl";
> +		reg = <0xfcffe000 0x1000>;
> +
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +		gpio-ranges = <&pinctrl 0 0 176>;
> +	};
> +
> +	scif0: serial@e8007000 {
> +		compatible = "renesas,scif-r7s9210";
> +		reg = <0xe8007000 0x18>;
> +		interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 266 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 267 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
> +		clocks = <&cpg CPG_MOD 47>;
> +		clock-names = "fck";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	scif1: serial@e8007800 {
> +		compatible = "renesas,scif-r7s9210";
> +		reg = <0xe8007800 0x18>;
> +		interrupts = <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 273 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 274 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
> +		clocks = <&cpg CPG_MOD 46>;
> +		clock-names = "fck";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	scif2: serial@e8008000 {
> +		compatible = "renesas,scif-r7s9210";
> +		reg = <0xe8008000 0x18>;
> +		interrupts = <GIC_SPI 277 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 279 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 277 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 280 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 280 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
> +		clocks = <&cpg CPG_MOD 45>;
> +		clock-names = "fck";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	scif3: serial@e8008800 {
> +		compatible = "renesas,scif-r7s9210";
> +		reg = <0xe8008800 0x18>;
> +		interrupts = <GIC_SPI 283 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 284 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 285 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 283 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 286 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 286 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
> +		clocks = <&cpg CPG_MOD 44>;
> +		clock-names = "fck";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	scif4: serial@e8009000 {
> +		compatible = "renesas,scif-r7s9210";
> +		reg = <0xe8009000 0x18>;
> +		interrupts = <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 290 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 291 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 292 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 292 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "eri", "rxi", "txi", "bri", "dri", "tei";
> +		clocks = <&cpg CPG_MOD 43>;
> +		clock-names = "fck";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	ostm0: timer@e803b000 {
> +		compatible = "renesas,r7s9210-ostm", "renesas,ostm";
> +		reg = <0xe803b000 0x30>;
> +		interrupts = <GIC_SPI 56 IRQ_TYPE_EDGE_RISING>;
> +		clocks = <&cpg CPG_MOD 36>;
> +		clock-names = "ostm0";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	ostm1: timer@e803c000 {
> +		compatible = "renesas,r7s9210-ostm", "renesas,ostm";
> +		reg = <0xe803c000 0x30>;
> +		interrupts = <GIC_SPI 57 IRQ_TYPE_EDGE_RISING>;
> +		clocks = <&cpg CPG_MOD 35>;
> +		clock-names = "ostm1";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +
> +	ostm2: timer@e803d000 {
> +		compatible = "renesas,r7s9210-ostm", "renesas,ostm";
> +		reg = <0xe803d000 0x30>;
> +		interrupts = <GIC_SPI 58 IRQ_TYPE_EDGE_RISING>;
> +		clocks = <&cpg CPG_MOD 34>;
> +		clock-names = "ostm2";
> +		power-domains = <&cpg>;
> +		status = "disabled";
> +	};
> +};
> -- 
> 2.16.1
> 

RE: [PATCH v3 1/2] ARM: dts: r7s9210: Initial SoC device tree

[Chris Brandt]

On Tuesday, December 18, 2018 1, Rob Herring wrote:
> > +/ {
> > +	compatible = "renesas,r7s9210";
> > +	interrupt-parent = <&gic>;
> > +	#address-cells = <1>;
> > +	#size-cells = <1>;
> > +
> > +	bsid: chipid@fcfe8004 {
> 
> Put all the mmio peripherals under a simple-bus node or nodes.

Just to be clear on what you mean, basically put all the peripherals 
under a 'soc' node like the other Renesas parts?

	soc {
		compatible = "simple-bus";
		interrupt-parent = <&gic>;

		#address-cells = <2>;
		#size-cells = <2>;
		ranges;


Thanks,
Chris

Re: [PATCH v3 1/2] ARM: dts: r7s9210: Initial SoC device tree

[Rob Herring]

On Tue, Dec 18, 2018 at 9:40 AM Chris Brandt <Chris.Brandt@renesas.com> wrote:
>
> On Tuesday, December 18, 2018 1, Rob Herring wrote:
> > > +/ {
> > > +   compatible = "renesas,r7s9210";
> > > +   interrupt-parent = <&gic>;
> > > +   #address-cells = <1>;
> > > +   #size-cells = <1>;
> > > +
> > > +   bsid: chipid@fcfe8004 {
> >
> > Put all the mmio peripherals under a simple-bus node or nodes.
>
> Just to be clear on what you mean, basically put all the peripherals
> under a 'soc' node like the other Renesas parts?

Yes.

>
>         soc {
>                 compatible = "simple-bus";
>                 interrupt-parent = <&gic>;
>
>                 #address-cells = <2>;
>                 #size-cells = <2>;
>                 ranges;
>
>
> Thanks,
> Chris
>

Re: [PATCH v3 1/2] ARM: dts: r7s9210: Initial SoC device tree

[Rob Herring]

On Tue, Dec 18, 2018 at 9:05 AM Rob Herring <robh@kernel.org> wrote:
>
> On Mon, Dec 17, 2018 at 09:43:23AM -0500, Chris Brandt wrote:
> > Basic support for the RZ/A2 (R7S9210) SoC.
> >
> > Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
> > ---

> > +     gic: interrupt-controller@e8221000 {
> > +             compatible = "arm,gic-400";
>
> Kind of strange that a single core A9 uses an external GIC rather than
> the built-in one.

Still have this question on v4. It should be "arm,cortex-a9-gic" if
the A9 built-in GIC is used.

Rob

Re: [PATCH v3 1/2] ARM: dts: r7s9210: Initial SoC device tree

[Geert Uytterhoeven]

Hi Rob,

On Wed, Dec 19, 2018 at 3:07 PM Rob Herring <robh@kernel.org> wrote:
> On Tue, Dec 18, 2018 at 9:05 AM Rob Herring <robh@kernel.org> wrote:
> > On Mon, Dec 17, 2018 at 09:43:23AM -0500, Chris Brandt wrote:
> > > Basic support for the RZ/A2 (R7S9210) SoC.
> > >
> > > Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
> > > ---
>
> > > +     gic: interrupt-controller@e8221000 {
> > > +             compatible = "arm,gic-400";
> >
> > Kind of strange that a single core A9 uses an external GIC rather than
> > the built-in one.
>
> Still have this question on v4. It should be "arm,cortex-a9-gic" if
> the A9 built-in GIC is used.

The GIC in RZ/A2 is documented to be a GIC-400.  Apparently the A9 GIC does
not have enough interrupt sources to serve all RZ/A2 peripherals.

Note that several Renesas A9 SoCs use a PL390.

https://lore.kernel.org/lkml/20150429125703.GB11757@leverpostej/
has a patch to print the GIC variant ID at runtime, to be 100% sure.

0x0000043b = arm,pl390
0x0102043b = arm,cortex-a9-gic
0x0200043b = arm,gic-400

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[PATCH v3 2/2] ARM: dts: r7s9210-rza2mevb: Add support for RZ/A2M EVB

[Chris Brandt]

Add support for Renesas RZ/A2M evaluation board.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
---
v3:
 * Removed QSPI partition (because half baked at the moment)
v2:
 * Removed patch for shmobile.txt
 * Added SPDX
 * Removed earlycon from bootargs
 * Fixed address in memory node name
 * Removed un-needed "okay" from leds node
 * Added green LED node
 * Dropped this blank line in pinctrl node
---
 arch/arm/boot/dts/Makefile             |  1 +
 arch/arm/boot/dts/r7s9210-rza2mevb.dts | 82 ++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)
 create mode 100644 arch/arm/boot/dts/r7s9210-rza2mevb.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 1ef2133a18c2..9665694b6494 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -824,6 +824,7 @@ dtb-$(CONFIG_ARCH_RENESAS) += \
 	r7s72100-genmai.dtb \
 	r7s72100-gr-peach.dtb \
 	r7s72100-rskrza1.dtb \
+	r7s9210-rza2mevb.dtb \
 	r8a73a4-ape6evm.dtb \
 	r8a7740-armadillo800eva.dtb \
 	r8a7743-iwg20d-q7.dtb \
diff --git a/arch/arm/boot/dts/r7s9210-rza2mevb.dts b/arch/arm/boot/dts/r7s9210-rza2mevb.dts
new file mode 100644
index 000000000000..991e09de1219
--- /dev/null
+++ b/arch/arm/boot/dts/r7s9210-rza2mevb.dts
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the RZA2MEVB board
+ *
+ * Copyright (C) 2018 Renesas Electronics
+ *
+ */
+
+/dts-v1/;
+#include "r7s9210.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/r7s9210-pinctrl.h>
+
+/ {
+	model = "RZA2MEVB";
+	compatible = "renesas,rza2mevb", "renesas,r7s9210";
+
+	aliases {
+		serial0 = &scif4;
+	};
+
+	chosen {
+		bootargs = "ignore_loglevel";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000 0x00800000>;	 /* HyperRAM */
+	};
+
+	lbsc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		red {
+			gpios = <&pinctrl RZA2_PIN(PORT6, 0) GPIO_ACTIVE_HIGH>;
+		};
+		green {
+			gpios = <&pinctrl RZA2_PIN(PORTC, 1) GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+/* EXTAL */
+&extal_clk {
+	clock-frequency = <24000000>;	/* 24MHz */
+};
+
+/* RTC_X1 */
+&rtc_x1_clk {
+	clock-frequency = <32768>;
+};
+
+&pinctrl {
+	/* Serial Console */
+	scif4_pins: serial4 {
+		pinmux = <RZA2_PINMUX(PORT9, 0, 4)>,	/* TxD4 */
+			 <RZA2_PINMUX(PORT9, 1, 4)>;	/* RxD4 */
+	};
+};
+
+/* High resolution System tick timers */
+&ostm0 {
+	status = "okay";
+};
+
+&ostm1 {
+	status = "okay";
+};
+
+/* Serial Console */
+&scif4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&scif4_pins>;
+
+	status = "okay";
+};
-- 
2.16.1