[PATCH 0/3] riscv: Add BeagleV Ahead board support

[PATCH 0/3] riscv: Add BeagleV Ahead board support

[Drew Fustini]

The BeagleV Ahead single board computer [1] features the T-Head TH1520
SoC. Similar to the Lichee Pi 4A series from Jisheng, this adds a
minimal device tree file to support booting to a basic shell [3].
    
[1] https://beagleboard.org/beaglev-ahead
[2] https://lore.kernel.org/linux-riscv/20230617161529.2092-1-jszhang@kernel.org/
[3] https://gist.github.com/pdp7/91b98f5b8a632802e669d8c359f4f498
    
To: Jisheng Zhang <jszhang@kernel.org>
To: Guo Ren <guoren@kernel.org>
To: Fu Wei <wefu@redhat.com>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Paul Walmsley <paul.walmsley@sifive.com>
To: Palmer Dabbelt <palmer@dabbelt.com>
To: Albert Ou <aou@eecs.berkeley.edu>
To: Conor Dooley <conor@kernel.org>
Cc: linux-riscv@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Robert Nelson <robertcnelson@beagleboard.org>
Cc: Jason Kridner <jkridner@beagleboard.org>

Signed-off-by: Drew Fustini <dfustini@baylibre.com>
---
Drew Fustini (3):
      riscv: dts: thead: add BeagleV Ahead board device tree
      dt-bindings: riscv: Add BeagleV Ahead board compatibles
      MAINTAINERS: add reviewer for T-Head RISC-V SoC support

 Documentation/devicetree/bindings/riscv/thead.yaml |  5 ++
 MAINTAINERS                                        |  1 +
 arch/riscv/boot/dts/thead/Makefile                 |  2 +-
 arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts | 61 ++++++++++++++++++++++
 4 files changed, 68 insertions(+), 1 deletion(-)
---
base-commit: 295e1388de2d5c0c354adbd65d0319c5d636c222
change-id: 20230722-upstream-beaglev-ahead-dts-d651af307fa6

Best regards,
-- 
Drew Fustini <dfustini@baylibre.com>


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[PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Drew Fustini]

The BeagleV Ahead single board computer uses the T-Head TH1520 SoC.
Add a minimal device tree to support basic uart/gpio/dmac drivers so
that a user can boot to a basic shell.

Link: https://beagleboard.org/beaglev-ahead
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
---
 arch/riscv/boot/dts/thead/Makefile                 |  2 +-
 arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts | 61 ++++++++++++++++++++++
 2 files changed, 62 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/thead/Makefile b/arch/riscv/boot/dts/thead/Makefile
index e311fc9a5939..b55a17127c2b 100644
--- a/arch/riscv/boot/dts/thead/Makefile
+++ b/arch/riscv/boot/dts/thead/Makefile
@@ -1,2 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a.dtb
+dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a.dtb th1520-beaglev-ahead.dtb
diff --git a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
new file mode 100644
index 000000000000..c315e5bd3d2d
--- /dev/null
+++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
+ * Copyright (C) 2023 Drew Fustini <dfustini@baylibre.com>
+ */
+
+/dts-v1/;
+
+#include "th1520.dtsi"
+
+/ {
+	model = "BeagleV Ahead";
+	compatible = "beagle,beaglev-ahead", "thead,th1520";
+
+	aliases {
+		gpio0 = &gpio0;
+		gpio1 = &gpio1;
+		gpio2 = &gpio2;
+		gpio3 = &gpio3;
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
+		serial4 = &uart4;
+		serial5 = &uart5;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0  0x00000000  0x1 0x00000000>;
+
+	};
+};
+
+&osc {
+	clock-frequency = <24000000>;
+};
+
+&osc_32k {
+	clock-frequency = <32768>;
+};
+
+&apb_clk {
+	clock-frequency = <62500000>;
+};
+
+&uart_sclk {
+	clock-frequency = <100000000>;
+};
+
+&dmac0 {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};

-- 
2.34.1


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[PATCH 2/3] dt-bindings: riscv: Add BeagleV Ahead board compatibles

[Drew Fustini]

Document the compatible strings for the BeagleV Ahead board which uses
the T-Head TH1520 SoC.

Link: https://beagleboard.org/beaglev-ahead
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
---
 Documentation/devicetree/bindings/riscv/thead.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/thead.yaml b/Documentation/devicetree/bindings/riscv/thead.yaml
index e62f6821372e..3b8b24812a24 100644
--- a/Documentation/devicetree/bindings/riscv/thead.yaml
+++ b/Documentation/devicetree/bindings/riscv/thead.yaml
@@ -24,6 +24,11 @@ properties:
           - const: sipeed,lichee-module-4a
           - const: thead,th1520
 
+      - description: BeagleV Ahead single board computer
+        items:
+          - const: beagle,beaglev-ahead
+          - const: thead,th1520
+
 additionalProperties: true
 
 ...

-- 
2.34.1


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[PATCH 3/3] MAINTAINERS: add reviewer for T-Head RISC-V SoC support

[Drew Fustini]

I will maintain support for the TH1520-based BeagleV Ahead board so
adding myself as a reviewer for T-Head SoC patches.

Signed-off-by: Drew Fustini <dfustini@baylibre.com>
---
 MAINTAINERS | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index d516295978a4..eaec3333f2ed 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18326,6 +18326,7 @@ RISC-V THEAD SoC SUPPORT
 M:	Jisheng Zhang <jszhang@kernel.org>
 M:	Guo Ren <guoren@kernel.org>
 M:	Fu Wei <wefu@redhat.com>
+R:	Drew Fustini <dfustini@baylibre.com>
 L:	linux-riscv@lists.infradead.org
 S:	Maintained
 F:	arch/riscv/boot/dts/thead/

-- 
2.34.1


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Re: [PATCH 3/3] MAINTAINERS: add reviewer for T-Head RISC-V SoC support

[Guo Ren]

Acked-by: Guo Ren <guoren@kernel.org>

On Sun, Jul 23, 2023 at 5:56 AM Drew Fustini <dfustini@baylibre.com> wrote:
>
> I will maintain support for the TH1520-based BeagleV Ahead board so
> adding myself as a reviewer for T-Head SoC patches.
>
> Signed-off-by: Drew Fustini <dfustini@baylibre.com>
> ---
>  MAINTAINERS | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d516295978a4..eaec3333f2ed 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -18326,6 +18326,7 @@ RISC-V THEAD SoC SUPPORT
>  M:     Jisheng Zhang <jszhang@kernel.org>
>  M:     Guo Ren <guoren@kernel.org>
>  M:     Fu Wei <wefu@redhat.com>
> +R:     Drew Fustini <dfustini@baylibre.com>
>  L:     linux-riscv@lists.infradead.org
>  S:     Maintained
>  F:     arch/riscv/boot/dts/thead/
>
> --
> 2.34.1
>


-- 
Best Regards
 Guo Ren

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Re: [PATCH 2/3] dt-bindings: riscv: Add BeagleV Ahead board compatibles

[Guo Ren]

On Sun, Jul 23, 2023 at 5:56 AM Drew Fustini <dfustini@baylibre.com> wrote:
>
> Document the compatible strings for the BeagleV Ahead board which uses
> the T-Head TH1520 SoC.
>
> Link: https://beagleboard.org/beaglev-ahead
> Signed-off-by: Drew Fustini <dfustini@baylibre.com>
> ---
>  Documentation/devicetree/bindings/riscv/thead.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/riscv/thead.yaml b/Documentation/devicetree/bindings/riscv/thead.yaml
> index e62f6821372e..3b8b24812a24 100644
> --- a/Documentation/devicetree/bindings/riscv/thead.yaml
> +++ b/Documentation/devicetree/bindings/riscv/thead.yaml
> @@ -24,6 +24,11 @@ properties:
>            - const: sipeed,lichee-module-4a
>            - const: thead,th1520
>
> +      - description: BeagleV Ahead single board computer
> +        items:
> +          - const: beagle,beaglev-ahead
> +          - const: thead,th1520
Reviewed-by: Guo Ren <guoren@kernel.org>

> +
>  additionalProperties: true
>
>  ...
>
> --
> 2.34.1
>


-- 
Best Regards
 Guo Ren

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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Guo Ren]

Reviewed-by: Guo Ren <guoren@kernel.org>

On Sun, Jul 23, 2023 at 5:56 AM Drew Fustini <dfustini@baylibre.com> wrote:
>
> The BeagleV Ahead single board computer uses the T-Head TH1520 SoC.
> Add a minimal device tree to support basic uart/gpio/dmac drivers so
> that a user can boot to a basic shell.
>
> Link: https://beagleboard.org/beaglev-ahead
> Signed-off-by: Drew Fustini <dfustini@baylibre.com>
> ---
>  arch/riscv/boot/dts/thead/Makefile                 |  2 +-
>  arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts | 61 ++++++++++++++++++++++
>  2 files changed, 62 insertions(+), 1 deletion(-)
>
> diff --git a/arch/riscv/boot/dts/thead/Makefile b/arch/riscv/boot/dts/thead/Makefile
> index e311fc9a5939..b55a17127c2b 100644
> --- a/arch/riscv/boot/dts/thead/Makefile
> +++ b/arch/riscv/boot/dts/thead/Makefile
> @@ -1,2 +1,2 @@
>  # SPDX-License-Identifier: GPL-2.0
> -dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a.dtb
> +dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a.dtb th1520-beaglev-ahead.dtb
> diff --git a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> new file mode 100644
> index 000000000000..c315e5bd3d2d
> --- /dev/null
> +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> @@ -0,0 +1,61 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> + * Copyright (C) 2023 Drew Fustini <dfustini@baylibre.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "th1520.dtsi"
> +
> +/ {
> +       model = "BeagleV Ahead";
> +       compatible = "beagle,beaglev-ahead", "thead,th1520";
> +
> +       aliases {
> +               gpio0 = &gpio0;
> +               gpio1 = &gpio1;
> +               gpio2 = &gpio2;
> +               gpio3 = &gpio3;
> +               serial0 = &uart0;
> +               serial1 = &uart1;
> +               serial2 = &uart2;
> +               serial3 = &uart3;
> +               serial4 = &uart4;
> +               serial5 = &uart5;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +
> +       memory@0 {
> +               device_type = "memory";
> +               reg = <0x0  0x00000000  0x1 0x00000000>;
> +
> +       };
> +};
> +
> +&osc {
> +       clock-frequency = <24000000>;
> +};
> +
> +&osc_32k {
> +       clock-frequency = <32768>;
> +};
> +
> +&apb_clk {
> +       clock-frequency = <62500000>;
> +};
> +
> +&uart_sclk {
> +       clock-frequency = <100000000>;
> +};
> +
> +&dmac0 {
> +       status = "okay";
> +};
> +
> +&uart0 {
> +       status = "okay";
> +};
>
> --
> 2.34.1
>


-- 
Best Regards
 Guo Ren

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Re: [PATCH 2/3] dt-bindings: riscv: Add BeagleV Ahead board compatibles

[Krzysztof Kozlowski]

On 22/07/2023 23:55, Drew Fustini wrote:
> Document the compatible strings for the BeagleV Ahead board which uses
> the T-Head TH1520 SoC.
> 
> Link: https://beagleboard.org/beaglev-ahead
> Signed-off-by: Drew Fustini <dfustini@baylibre.com>
> ---
>  Documentation/devicetree/bindings/riscv/thead.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/riscv/thead.yaml b/Documentation/devicetree/bindings/riscv/thead.yaml
> index e62f6821372e..3b8b24812a24 100644
> --- a/Documentation/devicetree/bindings/riscv/thead.yaml
> +++ b/Documentation/devicetree/bindings/riscv/thead.yaml
> @@ -24,6 +24,11 @@ properties:
>            - const: sipeed,lichee-module-4a
>            - const: thead,th1520
>  
> +      - description: BeagleV Ahead single board computer
> +        items:
> +          - const: beagle,beaglev-ahead
> +          - const: thead,th1520

You should keep some order in all these entries, not add to the end.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof


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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Conor Dooley]

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On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:

> +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> @@ -0,0 +1,61 @@
> +// SPDX-License-Identifier: GPL-2.0

Hmm, should this not be dual licensed?
I notice the other th1520 stuff isn't either..


> +	memory@0 {
> +		device_type = "memory";
> +		reg = <0x0  0x00000000  0x1 0x00000000>;

There's some extra spaces in here for some reason.

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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Drew Fustini]

On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> 
> > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > @@ -0,0 +1,61 @@
> > +// SPDX-License-Identifier: GPL-2.0
> 
> Hmm, should this not be dual licensed?
> I notice the other th1520 stuff isn't either..

Good point, I'll resubmit with a dual license.

Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
changing to a dual license?

> 
> 
> > +	memory@0 {
> > +		device_type = "memory";
> > +		reg = <0x0  0x00000000  0x1 0x00000000>;
> 
> There's some extra spaces in here for some reason.

Thanks for spotting that. I'll fix when I resubmit with dual licnese.

Drew

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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Jisheng Zhang]

On Sun, Jul 23, 2023 at 10:29:57AM -0700, Drew Fustini wrote:
> On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> > On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> > 
> > > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > > @@ -0,0 +1,61 @@
> > > +// SPDX-License-Identifier: GPL-2.0
> > 
> > Hmm, should this not be dual licensed?
> > I notice the other th1520 stuff isn't either..
> 
> Good point, I'll resubmit with a dual license.
> 
> Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
> changing to a dual license?

When cooking the initial patch, I wrote the lpi4a dts files from
scratch based on sipeed opened sch file, and currently only I made
contributions to them, so it's easy to make the lpi4a dts files
dual license.

However, when constructing the th1520.dtsi, I refered the T-HEAD's
opensourced yocto repo(in fact, that's the only sourcecode/doc I have
at that time), and the license there is GPL-2.0. That's
also the reason why copyright of Alibaba Group Holding Limited is
added to th1520.dtsi. I'm not sure how to make th1520.dtsi dual
license. At least, this needs help from Guo Ren. Any suggestion is
appreciated.

> 
> > 
> > 
> > > +	memory@0 {
> > > +		device_type = "memory";
> > > +		reg = <0x0  0x00000000  0x1 0x00000000>;
> > 
> > There's some extra spaces in here for some reason.
> 
> Thanks for spotting that. I'll fix when I resubmit with dual licnese.
> 
> Drew

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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 1674 bytes --]

On Mon, Jul 24, 2023 at 08:23:22AM +0800, Jisheng Zhang wrote:
> On Sun, Jul 23, 2023 at 10:29:57AM -0700, Drew Fustini wrote:
> > On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> > > On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> > > 
> > > > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > > > @@ -0,0 +1,61 @@
> > > > +// SPDX-License-Identifier: GPL-2.0
> > > 
> > > Hmm, should this not be dual licensed?
> > > I notice the other th1520 stuff isn't either..
> > 
> > Good point, I'll resubmit with a dual license.
> > 
> > Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
> > changing to a dual license?
> 
> When cooking the initial patch, I wrote the lpi4a dts files from
> scratch based on sipeed opened sch file, and currently only I made
> contributions to them, so it's easy to make the lpi4a dts files
> dual license.
> 
> However, when constructing the th1520.dtsi, I refered the T-HEAD's
> opensourced yocto repo(in fact, that's the only sourcecode/doc I have
> at that time), and the license there is GPL-2.0. That's
> also the reason why copyright of Alibaba Group Holding Limited is
> added to th1520.dtsi. I'm not sure how to make th1520.dtsi dual
> license. At least, this needs help from Guo Ren. Any suggestion is
> appreciated.

I think Guo Ren Acking the change should be sufficient. It'd be good to
have them dual licensed to make it easier for other projects to include
the dts files from Linux. Almost all of what we have at the moment is
dual licensed, other than the Canaan stuff & some board dts files I got
from customers that were only GPLed.

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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Guo Ren]

On Mon, Jul 24, 2023 at 6:38 PM Conor Dooley <conor.dooley@microchip.com> wrote:
>
> On Mon, Jul 24, 2023 at 08:23:22AM +0800, Jisheng Zhang wrote:
> > On Sun, Jul 23, 2023 at 10:29:57AM -0700, Drew Fustini wrote:
> > > On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> > > > On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> > > >
> > > > > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > > > > @@ -0,0 +1,61 @@
> > > > > +// SPDX-License-Identifier: GPL-2.0
> > > >
> > > > Hmm, should this not be dual licensed?
> > > > I notice the other th1520 stuff isn't either..
> > >
> > > Good point, I'll resubmit with a dual license.
> > >
> > > Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
> > > changing to a dual license?
> >
> > When cooking the initial patch, I wrote the lpi4a dts files from
> > scratch based on sipeed opened sch file, and currently only I made
> > contributions to them, so it's easy to make the lpi4a dts files
> > dual license.
> >
> > However, when constructing the th1520.dtsi, I refered the T-HEAD's
> > opensourced yocto repo(in fact, that's the only sourcecode/doc I have
> > at that time), and the license there is GPL-2.0. That's
> > also the reason why copyright of Alibaba Group Holding Limited is
> > added to th1520.dtsi. I'm not sure how to make th1520.dtsi dual
> > license. At least, this needs help from Guo Ren. Any suggestion is
> > appreciated.
>
> I think Guo Ren Acking the change should be sufficient. It'd be good to
> have them dual licensed to make it easier for other projects to include
> the dts files from Linux. Almost all of what we have at the moment is
> dual licensed, other than the Canaan stuff & some board dts files I got
> from customers that were only GPLed.
Yes, dual license is okay for us.



-- 
Best Regards
 Guo Ren

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RE: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Kwanghoon Son]

> On Sun, Jul 23, 2023 at 10:29:57AM -0700, Drew Fustini wrote:
> > On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> > > On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> > >
> > > > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > > > @@ -0,0 +1,61 @@
> > > > +// SPDX-License-Identifier: GPL-2.0
> > >
> > > Hmm, should this not be dual licensed?
> > > I notice the other th1520 stuff isn't either..
> >
> > Good point, I'll resubmit with a dual license.
> >
> > Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
> > changing to a dual license?
> 
> When cooking the initial patch, I wrote the lpi4a dts files from
> scratch based on sipeed opened sch file, and currently only I made
> contributions to them, so it's easy to make the lpi4a dts files
> dual license.

Thanks for your work.
Is there any datasheet or user manual can get on public?
I'm going to contribute drivers in my spare time,
but it's hard to know the register file and dma information.

> However, when constructing the th1520.dtsi, I refered the T-HEAD's
> opensourced yocto repo(in fact, that's the only sourcecode/doc I have
> at that time), and the license there is GPL-2.0. That's
> also the reason why copyright of Alibaba Group Holding Limited is
> added to th1520.dtsi. I'm not sure how to make th1520.dtsi dual
> license. At least, this needs help from Guo Ren. Any suggestion is
> appreciated.
> 
> >
> > >
> > >
> > > > +	memory@0 {
> > > > +		device_type = "memory";
> > > > +		reg = <0x0  0x00000000  0x1 0x00000000>;
> > >
> > > There's some extra spaces in here for some reason.
> >
> > Thanks for spotting that. I'll fix when I resubmit with dual licnese.
> >
> > Drew

Kwang


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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Jisheng Zhang]

On Thu, Jul 27, 2023 at 06:55:37PM +0900, Kwanghoon Son wrote:
> > On Sun, Jul 23, 2023 at 10:29:57AM -0700, Drew Fustini wrote:
> > > On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> > > > On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> > > >
> > > > > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > > > > @@ -0,0 +1,61 @@
> > > > > +// SPDX-License-Identifier: GPL-2.0
> > > >
> > > > Hmm, should this not be dual licensed?
> > > > I notice the other th1520 stuff isn't either..
> > >
> > > Good point, I'll resubmit with a dual license.
> > >
> > > Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
> > > changing to a dual license?
> > 
> > When cooking the initial patch, I wrote the lpi4a dts files from
> > scratch based on sipeed opened sch file, and currently only I made
> > contributions to them, so it's easy to make the lpi4a dts files
> > dual license.
> 
> Thanks for your work.
> Is there any datasheet or user manual can get on public?

Sorry I can't help on datasheet.

> I'm going to contribute drivers in my spare time,
> but it's hard to know the register file and dma information.
>  

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Re: [PATCH 1/3] riscv: dts: thead: add BeagleV Ahead board device tree

[Drew Fustini]

On Thu, Jul 27, 2023 at 06:55:37PM +0900, Kwanghoon Son wrote:
> > On Sun, Jul 23, 2023 at 10:29:57AM -0700, Drew Fustini wrote:
> > > On Sun, Jul 23, 2023 at 11:32:17AM +0100, Conor Dooley wrote:
> > > > On Sat, Jul 22, 2023 at 02:55:39PM -0700, Drew Fustini wrote:
> > > >
> > > > > +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
> > > > > @@ -0,0 +1,61 @@
> > > > > +// SPDX-License-Identifier: GPL-2.0
> > > >
> > > > Hmm, should this not be dual licensed?
> > > > I notice the other th1520 stuff isn't either..
> > >
> > > Good point, I'll resubmit with a dual license.
> > >
> > > Jisheng: are you okay with the other arch/riscv/boot/dts/thead files
> > > changing to a dual license?
> > 
> > When cooking the initial patch, I wrote the lpi4a dts files from
> > scratch based on sipeed opened sch file, and currently only I made
> > contributions to them, so it's easy to make the lpi4a dts files
> > dual license.
> 
> Thanks for your work.
> Is there any datasheet or user manual can get on public?
> I'm going to contribute drivers in my spare time,
> but it's hard to know the register file and dma information.
 
We (the BeagleBoard.org Foundation) have asked T-Head to publish public
documentation for the TH1520. It is our understanduing that this should
happen soon but we do not know exactly when. I'll followup in the this
thread once that happens.

Thanks,
Drew

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