[PATCH v2 0/2] Add Nintendo NES/SuperNES classic support

[PATCH v2 0/2] Add Nintendo NES/SuperNES classic support

[Miquel Raynal]

This series adds support for the NES/SuperNES classic consoles from
Nintendo. Changes are done in A23/A33 DTSI to add NAND support.

Thanks,
Miqu?l

Changes since v1
================

arm: dts: sun8i: a23/a33: declare NAND pins
 * Patch created by splitting the v1 in two
 * Removed the trailing '@0' after the NAND pins declarations
 * Changed the name of these declarations
 * Declared all CS/RB lines
 * Reorganized the pins entry of nand_pins

arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support
 * Created two DTS: nes-classic and supernes-classic
 * Moved the NAND pinctrl declaration into the DTSI
 * Removed the USB hackery explanation
 * Explained why one UART port is preferred to the other


Miquel Raynal (2):
  arm: dts: sun8i: a23/a33: declare NAND pins
  arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

 arch/arm/boot/dts/Makefile                         |  2 +
 arch/arm/boot/dts/sun8i-a23-a33.dtsi               | 29 ++++++++++
 .../boot/dts/sun8i-r16-nintendo-nes-classic.dts    | 62 ++++++++++++++++++++++
 .../dts/sun8i-r16-nintendo-supernes-classic.dts    | 17 ++++++
 4 files changed, 110 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
 create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts

-- 
2.14.1

[PATCH v2 1/2] arm: dts: sun8i: a23/a33: declare NAND pins

[Miquel Raynal]

Declare NAND pins (bus, chip select and ready/busy) for a23/a33 SoCs.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 arch/arm/boot/dts/sun8i-a23-a33.dtsi | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
index 971f9be699a7..0308e8b21ea5 100644
--- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
@@ -315,6 +315,33 @@
 				bias-pull-up;
 			};
 
+			nand_pins: nand-pins {
+				pins = "PC0", "PC1", "PC2", "PC5",
+				       "PC8", "PC9", "PC10", "PC11",
+				       "PC12", "PC13", "PC14", "PC15";
+				function = "nand0";
+			};
+
+			nand_pins_cs0: nand-pins-cs0 {
+				pins = "PC4";
+				function = "nand0";
+			};
+
+			nand_pins_cs1: nand-pins-cs1 {
+				pins = "PC3";
+				function = "nand0";
+			};
+
+			nand_pins_rb0: nand-pins-rb0 {
+				pins = "PC6";
+				function = "nand0";
+			};
+
+			nand_pins_rb1: nand-pins-rb1 {
+				pins = "PC7";
+				function = "nand0";
+			};
+
 			pwm0_pins: pwm0 {
 				pins = "PH0";
 				function = "pwm0";
-- 
2.14.1

[PATCH v2 1/2] arm: dts: sun8i: a23/a33: declare NAND pins

[Chen-Yu Tsai]

On Tue, Mar 27, 2018 at 5:28 AM, Miquel Raynal
<miquel.raynal@bootlin.com> wrote:
> Declare NAND pins (bus, chip select and ready/busy) for a23/a33 SoCs.
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  arch/arm/boot/dts/sun8i-a23-a33.dtsi | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> index 971f9be699a7..0308e8b21ea5 100644
> --- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> +++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> @@ -315,6 +315,33 @@
>                                 bias-pull-up;
>                         };
>
> +                       nand_pins: nand-pins {
> +                               pins = "PC0", "PC1", "PC2", "PC5",
> +                                      "PC8", "PC9", "PC10", "PC11",
> +                                      "PC12", "PC13", "PC14", "PC15";
> +                               function = "nand0";
> +                       };
> +
> +                       nand_pins_cs0: nand-pins-cs0 {
> +                               pins = "PC4";
> +                               function = "nand0";
> +                       };
> +
> +                       nand_pins_cs1: nand-pins-cs1 {
> +                               pins = "PC3";
> +                               function = "nand0";
> +                       };
> +
> +                       nand_pins_rb0: nand-pins-rb0 {
> +                               pins = "PC6";
> +                               function = "nand0";
> +                       };
> +
> +                       nand_pins_rb1: nand-pins-rb1 {
> +                               pins = "PC7";
> +                               function = "nand0";
> +                       };
> +

The CS and RB pins are pulled up by default in the PIO
hardware reset values. But you should make them explicit,
especially since you likely don't know if there are external
pull-ups on these lines. I suppose you could set them to _not_
pull-up and see if things still work.

ChenYu

>                         pwm0_pins: pwm0 {
>                                 pins = "PH0";
>                                 function = "pwm0";
> --
> 2.14.1
>

[PATCH v2 2/2] arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

[Miquel Raynal]

The Nintendo NES/SuperNES features an R16 already well supported in
mainline.

The console over UART0 may be wired on two ports of the R16, both
available on the NES Classic PCB.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 arch/arm/boot/dts/Makefile                         |  2 +
 arch/arm/boot/dts/sun8i-a23-a33.dtsi               |  2 +
 .../boot/dts/sun8i-r16-nintendo-nes-classic.dts    | 62 ++++++++++++++++++++++
 .../dts/sun8i-r16-nintendo-supernes-classic.dts    | 17 ++++++
 4 files changed, 83 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
 create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index ade7a38543dc..cfdb48bd1a1d 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -990,6 +990,8 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 	sun8i-h3-orangepi-plus.dtb \
 	sun8i-h3-orangepi-plus2e.dtb \
 	sun8i-r16-bananapi-m2m.dtb \
+	sun8i-r16-nintendo-nes-classic.dtb \
+	sun8i-r16-nintendo-supernes-classic.dtb \
 	sun8i-r16-parrot.dtb \
 	sun8i-r40-bananapi-m2-ultra.dtb \
 	sun8i-v3s-licheepi-zero.dtb \
diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
index 0308e8b21ea5..c83919ab8542 100644
--- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
@@ -198,6 +198,8 @@
 			clock-names = "ahb", "mod";
 			resets = <&ccu RST_BUS_NAND>;
 			reset-names = "ahb";
+			pinctrl-names = "default";
+			pinctrl-0 = <&nand_pins &nand_pins_cs0 &nand_pins_rb0>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
new file mode 100644
index 000000000000..bc067befd2eb
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0 OR X11
+/* Copyright (c) 2016 FUKAUMI Naoki <naobsd@gmail.com> */
+
+/dts-v1/;
+#include "sun8i-a33.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+/ {
+	model = "Nintendo NES Classic Edition";
+	compatible = "nintendo,nes-classic", "allwinner,sun8i-a33";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&uart0 {
+	/*
+	 * UART0 is available on two ports: PB and PF, both are accessible.
+	 * PF can also be used for the SD card so PB is preferred.
+	 */
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};
+
+&nfc {
+	status = "okay";
+
+	/* 2Gb Macronix MX30LF2G18AC (3V) */
+	nand at 0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0>;
+		allwinner,rb = <0>;
+		nand-ecc-mode = "hw";
+		nand-ecc-strength = <16>;
+		nand-ecc-step-size = <1024>;
+	};
+};
+
+&usb_otg {
+	status = "okay";
+};
+
+&usbphy {
+	/* VBUS is always on because it is wired to the power supply */
+	usb1_vbus-supply = <&reg_vcc5v0>;
+	status = "okay";
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
new file mode 100644
index 000000000000..928f82dbe440
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0 OR X11
+
+/dts-v1/;
+#include "sun8i-r16-nintendo-nes-classic.dts"
+
+/ {
+	model = "Nintendo SuperNES Classic Edition";
+	compatible = "nintendo,supernes-classic", "allwinner,sun8i-a33";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
-- 
2.14.1

[PATCH v2 2/2] arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

[Chen-Yu Tsai]

On Tue, Mar 27, 2018 at 5:28 AM, Miquel Raynal
<miquel.raynal@bootlin.com> wrote:
> The Nintendo NES/SuperNES features an R16 already well supported in
> mainline.
>
> The console over UART0 may be wired on two ports of the R16, both
> available on the NES Classic PCB.
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  arch/arm/boot/dts/Makefile                         |  2 +
>  arch/arm/boot/dts/sun8i-a23-a33.dtsi               |  2 +
>  .../boot/dts/sun8i-r16-nintendo-nes-classic.dts    | 62 ++++++++++++++++++++++
>  .../dts/sun8i-r16-nintendo-supernes-classic.dts    | 17 ++++++
>  4 files changed, 83 insertions(+)
>  create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
>  create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index ade7a38543dc..cfdb48bd1a1d 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -990,6 +990,8 @@ dtb-$(CONFIG_MACH_SUN8I) += \
>         sun8i-h3-orangepi-plus.dtb \
>         sun8i-h3-orangepi-plus2e.dtb \
>         sun8i-r16-bananapi-m2m.dtb \
> +       sun8i-r16-nintendo-nes-classic.dtb \
> +       sun8i-r16-nintendo-supernes-classic.dtb \
>         sun8i-r16-parrot.dtb \
>         sun8i-r40-bananapi-m2-ultra.dtb \
>         sun8i-v3s-licheepi-zero.dtb \
> diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> index 0308e8b21ea5..c83919ab8542 100644
> --- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> +++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> @@ -198,6 +198,8 @@
>                         clock-names = "ahb", "mod";
>                         resets = <&ccu RST_BUS_NAND>;
>                         reset-names = "ahb";
> +                       pinctrl-names = "default";
> +                       pinctrl-0 = <&nand_pins &nand_pins_cs0 &nand_pins_rb0>;
>                         status = "disabled";
>                         #address-cells = <1>;
>                         #size-cells = <0>;
> diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
> new file mode 100644
> index 000000000000..bc067befd2eb
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
> @@ -0,0 +1,62 @@
> +// SPDX-License-Identifier: GPL-2.0 OR X11
> +/* Copyright (c) 2016 FUKAUMI Naoki <naobsd@gmail.com> */
> +
> +/dts-v1/;
> +#include "sun8i-a33.dtsi"
> +#include "sunxi-common-regulators.dtsi"
> +
> +/ {
> +       model = "Nintendo NES Classic Edition";
> +       compatible = "nintendo,nes-classic", "allwinner,sun8i-a33";

The chip found on the board is the R16, which is compatible or identical
with the A33. Nevertheless, please have an R33 compatible in front of
the A33 one. That would describe it properly.

> +
> +       aliases {
> +               serial0 = &uart0;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +};
> +
> +&uart0 {
> +       /*
> +        * UART0 is available on two ports: PB and PF, both are accessible.
> +        * PF can also be used for the SD card so PB is preferred.
> +        */
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&uart0_pins_a>;
> +       status = "okay";
> +};
> +
> +&nfc {
> +       status = "okay";
> +
> +       /* 2Gb Macronix MX30LF2G18AC (3V) */
> +       nand at 0 {
> +               #address-cells = <1>;
> +               #size-cells = <1>;
> +               reg = <0>;
> +               allwinner,rb = <0>;
> +               nand-ecc-mode = "hw";
> +               nand-ecc-strength = <16>;
> +               nand-ecc-step-size = <1024>;
> +       };
> +};
> +
> +&usb_otg {
> +       status = "okay";

This is missing a "dr_mode" property.

> +};
> +
> +&usbphy {
> +       /* VBUS is always on because it is wired to the power supply */
> +       usb1_vbus-supply = <&reg_vcc5v0>;
> +       status = "okay";
> +};
> +
> +&ehci0 {
> +       status = "okay";
> +};
> +
> +&ohci0 {
> +       status = "okay";
> +};

What is connected to the USB hosts? OTG does not use these.

> diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> new file mode 100644
> index 000000000000..928f82dbe440
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> @@ -0,0 +1,17 @@
> +// SPDX-License-Identifier: GPL-2.0 OR X11
> +
> +/dts-v1/;
> +#include "sun8i-r16-nintendo-nes-classic.dts"
> +
> +/ {
> +       model = "Nintendo SuperNES Classic Edition";
> +       compatible = "nintendo,supernes-classic", "allwinner,sun8i-a33";

Same here.

ChenYu

> +
> +       aliases {
> +               serial0 = &uart0;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +};
> --
> 2.14.1
>

[PATCH v2 2/2] arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

[Maxime Ripard]

On Tue, Mar 27, 2018 at 10:38:52AM +0800, Chen-Yu Tsai wrote:
> > diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> > new file mode 100644
> > index 000000000000..928f82dbe440
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> > @@ -0,0 +1,17 @@
> > +// SPDX-License-Identifier: GPL-2.0 OR X11

This should have a copyright license too

And could we call it super-nes-classic?

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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[PATCH v2 2/2] arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

[Miquel Raynal]

Hi Maxime,

On Tue, 27 Mar 2018 08:51:27 +0200, Maxime Ripard
<maxime.ripard@bootlin.com> wrote:

> On Tue, Mar 27, 2018 at 10:38:52AM +0800, Chen-Yu Tsai wrote:
> > > diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> > > new file mode 100644
> > > index 000000000000..928f82dbe440
> > > --- /dev/null
> > > +++ b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> > > @@ -0,0 +1,17 @@
> > > +// SPDX-License-Identifier: GPL-2.0 OR X11  
> 
> This should have a copyright license too

Added.

> 
> And could we call it super-nes-classic?

Of course yes.

Thanks for reviewing, the v3 is coming.
Miqu?l

[PATCH v2 2/2] arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

[Miquel Raynal]

Hi Chen-Yu,

On Tue, 27 Mar 2018 10:38:52 +0800, Chen-Yu Tsai <wens@csie.org> wrote:

> On Tue, Mar 27, 2018 at 5:28 AM, Miquel Raynal
> <miquel.raynal@bootlin.com> wrote:
> > The Nintendo NES/SuperNES features an R16 already well supported in
> > mainline.
> >
> > The console over UART0 may be wired on two ports of the R16, both
> > available on the NES Classic PCB.
> >
> > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> > ---
> >  arch/arm/boot/dts/Makefile                         |  2 +
> >  arch/arm/boot/dts/sun8i-a23-a33.dtsi               |  2 +
> >  .../boot/dts/sun8i-r16-nintendo-nes-classic.dts    | 62 ++++++++++++++++++++++
> >  .../dts/sun8i-r16-nintendo-supernes-classic.dts    | 17 ++++++
> >  4 files changed, 83 insertions(+)
> >  create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
> >  create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> >
> > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> > index ade7a38543dc..cfdb48bd1a1d 100644
> > --- a/arch/arm/boot/dts/Makefile
> > +++ b/arch/arm/boot/dts/Makefile
> > @@ -990,6 +990,8 @@ dtb-$(CONFIG_MACH_SUN8I) += \
> >         sun8i-h3-orangepi-plus.dtb \
> >         sun8i-h3-orangepi-plus2e.dtb \
> >         sun8i-r16-bananapi-m2m.dtb \
> > +       sun8i-r16-nintendo-nes-classic.dtb \
> > +       sun8i-r16-nintendo-supernes-classic.dtb \
> >         sun8i-r16-parrot.dtb \
> >         sun8i-r40-bananapi-m2-ultra.dtb \
> >         sun8i-v3s-licheepi-zero.dtb \
> > diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> > index 0308e8b21ea5..c83919ab8542 100644
> > --- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> > +++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
> > @@ -198,6 +198,8 @@
> >                         clock-names = "ahb", "mod";
> >                         resets = <&ccu RST_BUS_NAND>;
> >                         reset-names = "ahb";
> > +                       pinctrl-names = "default";
> > +                       pinctrl-0 = <&nand_pins &nand_pins_cs0 &nand_pins_rb0>;
> >                         status = "disabled";
> >                         #address-cells = <1>;
> >                         #size-cells = <0>;
> > diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
> > new file mode 100644
> > index 000000000000..bc067befd2eb
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
> > @@ -0,0 +1,62 @@
> > +// SPDX-License-Identifier: GPL-2.0 OR X11
> > +/* Copyright (c) 2016 FUKAUMI Naoki <naobsd@gmail.com> */
> > +
> > +/dts-v1/;
> > +#include "sun8i-a33.dtsi"
> > +#include "sunxi-common-regulators.dtsi"
> > +
> > +/ {
> > +       model = "Nintendo NES Classic Edition";
> > +       compatible = "nintendo,nes-classic", "allwinner,sun8i-a33";  
> 
> The chip found on the board is the R16, which is compatible or identical
> with the A33. Nevertheless, please have an R33 compatible in front of
> the A33 one. That would describe it properly.

I suppose you mean R16 compatible?

I added an "allwinner,sun8i-r16" compatible between the "nes-classic"
and the "sun8i-a33" ones.

> 
> > +
> > +       aliases {
> > +               serial0 = &uart0;
> > +       };
> > +
> > +       chosen {
> > +               stdout-path = "serial0:115200n8";
> > +       };
> > +};
> > +
> > +&uart0 {
> > +       /*
> > +        * UART0 is available on two ports: PB and PF, both are accessible.
> > +        * PF can also be used for the SD card so PB is preferred.
> > +        */
> > +       pinctrl-names = "default";
> > +       pinctrl-0 = <&uart0_pins_a>;
> > +       status = "okay";
> > +};
> > +
> > +&nfc {
> > +       status = "okay";
> > +
> > +       /* 2Gb Macronix MX30LF2G18AC (3V) */
> > +       nand at 0 {
> > +               #address-cells = <1>;
> > +               #size-cells = <1>;
> > +               reg = <0>;
> > +               allwinner,rb = <0>;
> > +               nand-ecc-mode = "hw";
> > +               nand-ecc-strength = <16>;
> > +               nand-ecc-step-size = <1024>;
> > +       };
> > +};
> > +
> > +&usb_otg {
> > +       status = "okay";  
> 
> This is missing a "dr_mode" property.

Right.

> 
> > +};
> > +
> > +&usbphy {
> > +       /* VBUS is always on because it is wired to the power supply */
> > +       usb1_vbus-supply = <&reg_vcc5v0>;
> > +       status = "okay";
> > +};
> > +
> > +&ehci0 {
> > +       status = "okay";
> > +};
> > +
> > +&ohci0 {
> > +       status = "okay";
> > +};  
> 
> What is connected to the USB hosts? OTG does not use these.

My mistake, I thought these were still needed. I will remove them both
as there is only one OTG port.

> 
> > diff --git a/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> > new file mode 100644
> > index 000000000000..928f82dbe440
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
> > @@ -0,0 +1,17 @@
> > +// SPDX-License-Identifier: GPL-2.0 OR X11
> > +
> > +/dts-v1/;
> > +#include "sun8i-r16-nintendo-nes-classic.dts"
> > +
> > +/ {
> > +       model = "Nintendo SuperNES Classic Edition";
> > +       compatible = "nintendo,supernes-classic", "allwinner,sun8i-a33";  
> 
> Same here.

Okay.

> 
> ChenYu
> 
> > +
> > +       aliases {
> > +               serial0 = &uart0;
> > +       };
> > +
> > +       chosen {
> > +               stdout-path = "serial0:115200n8";
> > +       };
> > +};
> > --
> > 2.14.1
> >  

Thanks,
Miqu?l

-- 
Miquel Raynal, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

[PATCH v2 0/2] Add Nintendo NES/SuperNES classic support

[Chen-Yu Tsai]

On Tue, Mar 27, 2018 at 5:28 AM, Miquel Raynal
<miquel.raynal@bootlin.com> wrote:
> This series adds support for the NES/SuperNES classic consoles from
> Nintendo. Changes are done in A23/A33 DTSI to add NAND support.
>
> Thanks,
> Miqu?l
>
> Changes since v1
> ================
>
> arm: dts: sun8i: a23/a33: declare NAND pins
>  * Patch created by splitting the v1 in two
>  * Removed the trailing '@0' after the NAND pins declarations
>  * Changed the name of these declarations
>  * Declared all CS/RB lines
>  * Reorganized the pins entry of nand_pins
>
> arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support
>  * Created two DTS: nes-classic and supernes-classic
>  * Moved the NAND pinctrl declaration into the DTSI
>  * Removed the USB hackery explanation
>  * Explained why one UART port is preferred to the other
>
>
> Miquel Raynal (2):
>   arm: dts: sun8i: a23/a33: declare NAND pins
>   arm: dts: nes: add Nintendo NES/SuperNES Classic Edition support

"ARM" should be uppercase. However, "arm64" should be lowercase.

ChenYu

>
>  arch/arm/boot/dts/Makefile                         |  2 +
>  arch/arm/boot/dts/sun8i-a23-a33.dtsi               | 29 ++++++++++
>  .../boot/dts/sun8i-r16-nintendo-nes-classic.dts    | 62 ++++++++++++++++++++++
>  .../dts/sun8i-r16-nintendo-supernes-classic.dts    | 17 ++++++
>  4 files changed, 110 insertions(+)
>  create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts
>  create mode 100644 arch/arm/boot/dts/sun8i-r16-nintendo-supernes-classic.dts
>
> --
> 2.14.1
>