The BigTreeTech Pi is an H616 based board based on CB1.
Just in Rpi format board.
It features the same internals as BTT CB1 but adds:
- Fan port
- IR receiver
- ADXL345 Accelerometer connector via SPI
- 24V DC power supply via terminal plugs
- USB to CAN module connector (The actual USB to CAN happens on the external module)
List of currently working things is same as BTT CB1 but also:
- IR receiver
- ADXL345 connector
Signed-off-by: Martin Botka <[email protected]>
Reviewed-by: Andre Przywara <[email protected]>
---
Changes in V2:
- Add UART alongside aliases and chosen for it
- Add model string
- Enable IR receiver
- Enable SPI0 for ADXL345 connector
Changes in V3:
- Add missing semicolons
- Add pinctrl for SPI0
arch/arm64/boot/dts/allwinner/Makefile | 1 +
.../allwinner/sun50i-h616-bigtreetech-pi.dts | 70 +++++++++++++++++++
2 files changed, 71 insertions(+)
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 7b386428510b..0b6232a7f328 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64-model-b.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
new file mode 100644
index 000000000000..b0d0386e8f13
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: (GPL-2.0+ or MIT)
+/*
+ * Copyright (C) 2023 Martin Botka <[email protected]>.
+ */
+
+/dts-v1/;
+
+#include "sun50i-h616-bigtreetech-cb1.dtsi"
+
+/ {
+ model = "BigTreeTech Pi";
+ compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+};
+
+&ehci0 {
+ status = "okay";
+};
+
+&ehci1 {
+ status = "okay";
+};
+
+&ehci2 {
+ status = "okay";
+};
+
+&ehci3 {
+ status = "okay";
+};
+
+&ir {
+ status = "okay";
+};
+
+&ohci0 {
+ status = "okay";
+};
+
+&ohci1 {
+ status = "okay";
+};
+
+&ohci2 {
+ status = "okay";
+};
+
+&ohci3 {
+ status = "okay";
+};
+
+&spi0 {
+ /* SPI connection for onboard connector for ADXL345 accelerometer */
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_ph_pins>;
+ status = "okay";
+};
--
2.41.0
Dne nedelja, 13. avgust 2023 ob 17:42:10 CEST je Icenowy Zheng napisal(a):
> 在 2023-08-07星期一的 16:53 +0200，Martin Botka写道：
>
> > The BigTreeTech Pi is an H616 based board based on CB1.
> > Just in Rpi format board.
> >
> > It features the same internals as BTT CB1 but adds:
> > - Fan port
> > - IR receiver
> > - ADXL345 Accelerometer connector via SPI
> > - 24V DC power supply via terminal plugs
> > - USB to CAN module connector (The actual USB to CAN happens on
> > the external module)
> >
> > List of currently working things is same as BTT CB1 but also:
> > - IR receiver
> > - ADXL345 connector
> >
> > Signed-off-by: Martin Botka <[email protected]>
> > Reviewed-by: Andre Przywara <[email protected]>
> > ---
> > Changes in V2:
> > - Add UART alongside aliases and chosen for it
> > - Add model string
> > - Enable IR receiver
> > - Enable SPI0 for ADXL345 connector
> > Changes in V3:
> > - Add missing semicolons
> > - Add pinctrl for SPI0
> >
> > arch/arm64/boot/dts/allwinner/Makefile | 1 +
> > .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
> > +++++++++++++++++++
> > 2 files changed, 71 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h616-
> > bigtreetech-pi.dts
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/Makefile
> > b/arch/arm64/boot/dts/allwinner/Makefile
> > index 7b386428510b..0b6232a7f328 100644
> > --- a/arch/arm64/boot/dts/allwinner/Makefile
> > +++ b/arch/arm64/boot/dts/allwinner/Makefile
> > @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64-
> > model-b.dtb
> > dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
> > dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
> > dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb
> > +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
> > dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
> > dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-
> > pi.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> > new file mode 100644
> > index 000000000000..b0d0386e8f13
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> > @@ -0,0 +1,70 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> > +/*
> > + * Copyright (C) 2023 Martin Botka <[email protected]>.
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include "sun50i-h616-bigtreetech-cb1.dtsi"
> > +
> > +/ {
> > + model = "BigTreeTech Pi";
> > + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
>
> As you say it's based on CB1 too, why no CB1 compatible here? (although
> the manta compatible won't apply)
Because it doesn't contain module per se.
Best regards,
Jernej
>
> > +
> > + aliases {
> > + serial0 = &uart0;
> > + };
> > +
> > + chosen {
> > + stdout-path = "serial0:115200n8";
> > + };
> > +};
> > +
> > +&ehci0 {
> > + status = "okay";
> > +};
> > +
> > +&ehci1 {
> > + status = "okay";
> > +};
> > +
> > +&ehci2 {
> > + status = "okay";
> > +};
> > +
> > +&ehci3 {
> > + status = "okay";
> > +};
> > +
> > +&ir {
> > + status = "okay";
> > +};
> > +
> > +&ohci0 {
> > + status = "okay";
> > +};
> > +
> > +&ohci1 {
> > + status = "okay";
> > +};
> > +
> > +&ohci2 {
> > + status = "okay";
> > +};
> > +
> > +&ohci3 {
> > + status = "okay";
> > +};
> > +
> > +&spi0 {
> > + /* SPI connection for onboard connector for ADXL345
> > accelerometer */
> > + status = "okay";
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
> > +};
> > +
> > +&uart0 {
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&uart0_ph_pins>;
> > + status = "okay";
> > +};
On Sun, Aug 13 2023 at 05:55:35 PM +02:00:00, Jernej ?krabec
<[email protected]> wrote:
> Dne ponedeljek, 07. avgust 2023 ob 16:53:24 CEST je Martin Botka
> napisal(a):
>> The BigTreeTech Pi is an H616 based board based on CB1.
>> Just in Rpi format board.
>>
>> It features the same internals as BTT CB1 but adds:
>> - Fan port
>> - IR receiver
>> - ADXL345 Accelerometer connector via SPI
>> - 24V DC power supply via terminal plugs
>> - USB to CAN module connector (The actual USB to CAN happens on
>> the
>> external module)
>>
>> List of currently working things is same as BTT CB1 but also:
>> - IR receiver
>> - ADXL345 connector
>>
>> Signed-off-by: Martin Botka <[email protected]>
>> Reviewed-by: Andre Przywara <[email protected]>
>> ---
>> Changes in V2:
>> - Add UART alongside aliases and chosen for it
>> - Add model string
>> - Enable IR receiver
>> - Enable SPI0 for ADXL345 connector
>> Changes in V3:
>> - Add missing semicolons
>> - Add pinctrl for SPI0
>>
>> arch/arm64/boot/dts/allwinner/Makefile | 1 +
>> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
>> +++++++++++++++++++
>> 2 files changed, 71 insertions(+)
>> create mode 100644
>> arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>>
>> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
>> b/arch/arm64/boot/dts/allwinner/Makefile index
>> 7b386428510b..0b6232a7f328
>> 100644
>> --- a/arch/arm64/boot/dts/allwinner/Makefile
>> +++ b/arch/arm64/boot/dts/allwinner/Makefile
>> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) +=
>> sun50i-h6-pine-h64-model-b.dtb
>> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
>> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
>> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb
>> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
>> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
>> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
>> diff --git
>> a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts new
>> file
>> mode 100644
>> index 000000000000..b0d0386e8f13
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> @@ -0,0 +1,70 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
>> +/*
>> + * Copyright (C) 2023 Martin Botka <[email protected]>.
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
>> +
>> +/ {
>> + model = "BigTreeTech Pi";
>> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
>> +
>> + aliases {
>> + serial0 = &uart0;
>> + };
>> +
>> + chosen {
>> + stdout-path = "serial0:115200n8";
>> + };
>> +};
>> +
>> +&ehci0 {
>> + status = "okay";
>> +};
>> +
>> +&ehci1 {
>> + status = "okay";
>> +};
>> +
>> +&ehci2 {
>> + status = "okay";
>> +};
>> +
>> +&ehci3 {
>> + status = "okay";
>> +};
>> +
>> +&ir {
>> + status = "okay";
>> +};
>> +
>> +&ohci0 {
>> + status = "okay";
>> +};
>> +
>> +&ohci1 {
>> + status = "okay";
>> +};
>> +
>> +&ohci2 {
>> + status = "okay";
>> +};
>> +
>> +&ohci3 {
>> + status = "okay";
>> +};
>> +
>> +&spi0 {
>> + /* SPI connection for onboard connector for ADXL345 accelerometer
> */
>> + status = "okay";
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
>
> Driver and compatible for ADXL345 already exists, why don't you add
> child node
> for it?
>
> Best regards,
> Jernej
Ah. So the ADXL345 actually wont be driven by kernel.
The SPI connection is enabled so that klipper (3d printer firmware) can
be told to look for ADXL345 at this SPI and use it on its own.
Klipper will initialize and communicate with the ADXL on its own.
>
>> +};
>> +
>> +&uart0 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&uart0_ph_pins>;
>> + status = "okay";
>> +};
>
>
>
>
在 2023-08-07星期一的 16:53 +0200，Martin Botka写道：
> The BigTreeTech Pi is an H616 based board based on CB1.
> Just in Rpi format board.
>
> It features the same internals as BTT CB1 but adds:
> - Fan port
> - IR receiver
> - ADXL345 Accelerometer connector via SPI
> - 24V DC power supply via terminal plugs
> - USB to CAN module connector (The actual USB to CAN happens on
> the external module)
>
> List of currently working things is same as BTT CB1 but also:
> - IR receiver
> - ADXL345 connector
>
> Signed-off-by: Martin Botka <[email protected]>
> Reviewed-by: Andre Przywara <[email protected]>
> ---
> Changes in V2:
> - Add UART alongside aliases and chosen for it
> - Add model string
> - Enable IR receiver
> - Enable SPI0 for ADXL345 connector
> Changes in V3:
> - Add missing semicolons
> - Add pinctrl for SPI0
>
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
> +++++++++++++++++++
> 2 files changed, 71 insertions(+)
> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h616-
> bigtreetech-pi.dts
>
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
> b/arch/arm64/boot/dts/allwinner/Makefile
> index 7b386428510b..0b6232a7f328 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64-
> model-b.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-
> pi.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> new file mode 100644
> index 000000000000..b0d0386e8f13
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> @@ -0,0 +1,70 @@
> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> +/*
> + * Copyright (C) 2023 Martin Botka <[email protected]>.
> + */
> +
> +/dts-v1/;
> +
> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
> +
> +/ {
> + model = "BigTreeTech Pi";
> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
As you say it's based on CB1 too, why no CB1 compatible here? (although
the manta compatible won't apply)
> +
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +};
> +
> +&ehci0 {
> + status = "okay";
> +};
> +
> +&ehci1 {
> + status = "okay";
> +};
> +
> +&ehci2 {
> + status = "okay";
> +};
> +
> +&ehci3 {
> + status = "okay";
> +};
> +
> +&ir {
> + status = "okay";
> +};
> +
> +&ohci0 {
> + status = "okay";
> +};
> +
> +&ohci1 {
> + status = "okay";
> +};
> +
> +&ohci2 {
> + status = "okay";
> +};
> +
> +&ohci3 {
> + status = "okay";
> +};
> +
> +&spi0 {
> + /* SPI connection for onboard connector for ADXL345
> accelerometer */
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_ph_pins>;
> + status = "okay";
> +};
Dne ponedeljek, 07. avgust 2023 ob 16:53:24 CEST je Martin Botka napisal(a):
> The BigTreeTech Pi is an H616 based board based on CB1.
> Just in Rpi format board.
>
> It features the same internals as BTT CB1 but adds:
> - Fan port
> - IR receiver
> - ADXL345 Accelerometer connector via SPI
> - 24V DC power supply via terminal plugs
> - USB to CAN module connector (The actual USB to CAN happens on the
> external module)
>
> List of currently working things is same as BTT CB1 but also:
> - IR receiver
> - ADXL345 connector
>
> Signed-off-by: Martin Botka <[email protected]>
> Reviewed-by: Andre Przywara <[email protected]>
> ---
> Changes in V2:
> - Add UART alongside aliases and chosen for it
> - Add model string
> - Enable IR receiver
> - Enable SPI0 for ADXL345 connector
> Changes in V3:
> - Add missing semicolons
> - Add pinctrl for SPI0
>
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70 +++++++++++++++++++
> 2 files changed, 71 insertions(+)
> create mode 100644
> arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
> b/arch/arm64/boot/dts/allwinner/Makefile index 7b386428510b..0b6232a7f328
> 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64-model-b.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts new file
> mode 100644
> index 000000000000..b0d0386e8f13
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> @@ -0,0 +1,70 @@
> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> +/*
> + * Copyright (C) 2023 Martin Botka <[email protected]>.
> + */
> +
> +/dts-v1/;
> +
> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
> +
> +/ {
> + model = "BigTreeTech Pi";
> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
> +
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +};
> +
> +&ehci0 {
> + status = "okay";
> +};
> +
> +&ehci1 {
> + status = "okay";
> +};
> +
> +&ehci2 {
> + status = "okay";
> +};
> +
> +&ehci3 {
> + status = "okay";
> +};
> +
> +&ir {
> + status = "okay";
> +};
> +
> +&ohci0 {
> + status = "okay";
> +};
> +
> +&ohci1 {
> + status = "okay";
> +};
> +
> +&ohci2 {
> + status = "okay";
> +};
> +
> +&ohci3 {
> + status = "okay";
> +};
> +
> +&spi0 {
> + /* SPI connection for onboard connector for ADXL345 accelerometer
*/
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
Driver and compatible for ADXL345 already exists, why don't you add child node
for it?
Best regards,
Jernej
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_ph_pins>;
> + status = "okay";
> +};
Dne nedelja, 13. avgust 2023 ob 18:22:49 CEST je Martin Botka napisal(a):
> On Sun, Aug 13 2023 at 05:55:35 PM +02:00:00, Jernej Škrabec
>
> <[email protected]> wrote:
> > Dne ponedeljek, 07. avgust 2023 ob 16:53:24 CEST je Martin Botka
> >
> > napisal(a):
> >> The BigTreeTech Pi is an H616 based board based on CB1.
> >> Just in Rpi format board.
> >>
> >> It features the same internals as BTT CB1 but adds:
> >> - Fan port
> >> - IR receiver
> >> - ADXL345 Accelerometer connector via SPI
> >> - 24V DC power supply via terminal plugs
> >> - USB to CAN module connector (The actual USB to CAN happens on
> >>
> >> the
> >>
> >> external module)
> >>
> >> List of currently working things is same as BTT CB1 but also:
> >> - IR receiver
> >> - ADXL345 connector
> >>
> >> Signed-off-by: Martin Botka <[email protected]>
> >> Reviewed-by: Andre Przywara <[email protected]>
> >> ---
> >>
> >> Changes in V2:
> >> - Add UART alongside aliases and chosen for it
> >> - Add model string
> >> - Enable IR receiver
> >> - Enable SPI0 for ADXL345 connector
> >>
> >> Changes in V3:
> >> - Add missing semicolons
> >> - Add pinctrl for SPI0
> >>
> >> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> >> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
> >>
> >> +++++++++++++++++++
> >>
> >> 2 files changed, 71 insertions(+)
> >> create mode 100644
> >>
> >> arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >>
> >> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
> >> b/arch/arm64/boot/dts/allwinner/Makefile index
> >>
> >> 7b386428510b..0b6232a7f328
> >>
> >> 100644
> >> --- a/arch/arm64/boot/dts/allwinner/Makefile
> >> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> >> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) +=
> >>
> >> sun50i-h6-pine-h64-model-b.dtb
> >>
> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
> >>
> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-manta.dtb
> >>
> >> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
> >>
> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
> >>
> >> diff --git
> >>
> >> a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >>
> >> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts new
> >>
> >> file
> >>
> >> mode 100644
> >> index 000000000000..b0d0386e8f13
> >> --- /dev/null
> >> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >> @@ -0,0 +1,70 @@
> >> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> >> +/*
> >> + * Copyright (C) 2023 Martin Botka <[email protected]>.
> >> + */
> >> +
> >> +/dts-v1/;
> >> +
> >> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
> >> +
> >> +/ {
> >> + model = "BigTreeTech Pi";
> >> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
> >> +
> >> + aliases {
> >> + serial0 = &uart0;
> >> + };
> >> +
> >> + chosen {
> >> + stdout-path = "serial0:115200n8";
> >> + };
> >> +};
> >> +
> >> +&ehci0 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ehci1 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ehci2 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ehci3 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ir {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ohci0 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ohci1 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ohci2 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&ohci3 {
> >> + status = "okay";
> >> +};
> >> +
> >> +&spi0 {
> >> + /* SPI connection for onboard connector for ADXL345 accelerometer
> >
> > */
> >
> >> + status = "okay";
> >> + pinctrl-names = "default";
> >> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
> >
> > Driver and compatible for ADXL345 already exists, why don't you add
> > child node
> > for it?
> >
> > Best regards,
> > Jernej
>
> Ah. So the ADXL345 actually wont be driven by kernel.
DT is hardware description, it's not concerned what is done on software side,
either kernel or user space.
> The SPI connection is enabled so that klipper (3d printer firmware) can
> be told to look for ADXL345 at this SPI and use it on its own.
>
> Klipper will initialize and communicate with the ADXL on its own.
What do you mean by firmware? User space app? In this case I suppose you'll use
direct SPI commands from user space? AFAIK that's less and less supported by
kernel (in contrast to I2C).
Best regards,
Jernej
>
> >> +};
> >> +
> >> +&uart0 {
> >> + pinctrl-names = "default";
> >> + pinctrl-0 = <&uart0_ph_pins>;
> >> + status = "okay";
> >> +};
On Mon, Aug 14 2023 at 12:26:07 PM +02:00:00, Jernej ?krabec
<[email protected]> wrote:
> Dne nedelja, 13. avgust 2023 ob 18:22:49 CEST je Martin Botka
> napisal(a):
>> On Sun, Aug 13 2023 at 05:55:35 PM +02:00:00, Jernej ?krabec
>>
>> <[email protected]> wrote:
>> > Dne ponedeljek, 07. avgust 2023 ob 16:53:24 CEST je Martin Botka
>> >
>> > napisal(a):
>> >> The BigTreeTech Pi is an H616 based board based on CB1.
>> >> Just in Rpi format board.
>> >>
>> >> It features the same internals as BTT CB1 but adds:
>> >> - Fan port
>> >> - IR receiver
>> >> - ADXL345 Accelerometer connector via SPI
>> >> - 24V DC power supply via terminal plugs
>> >> - USB to CAN module connector (The actual USB to CAN
>> happens on
>> >>
>> >> the
>> >>
>> >> external module)
>> >>
>> >> List of currently working things is same as BTT CB1 but also:
>> >> - IR receiver
>> >> - ADXL345 connector
>> >>
>> >> Signed-off-by: Martin Botka <[email protected]>
>> >> Reviewed-by: Andre Przywara <[email protected]>
>> >> ---
>> >>
>> >> Changes in V2:
>> >> - Add UART alongside aliases and chosen for it
>> >> - Add model string
>> >> - Enable IR receiver
>> >> - Enable SPI0 for ADXL345 connector
>> >>
>> >> Changes in V3:
>> >> - Add missing semicolons
>> >> - Add pinctrl for SPI0
>> >>
>> >> arch/arm64/boot/dts/allwinner/Makefile | 1 +
>> >> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
>> >>
>> >> +++++++++++++++++++
>> >>
>> >> 2 files changed, 71 insertions(+)
>> >> create mode 100644
>> >>
>> >> arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >>
>> >> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
>> >> b/arch/arm64/boot/dts/allwinner/Makefile index
>> >>
>> >> 7b386428510b..0b6232a7f328
>> >>
>> >> 100644
>> >> --- a/arch/arm64/boot/dts/allwinner/Makefile
>> >> +++ b/arch/arm64/boot/dts/allwinner/Makefile
>> >> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) +=
>> >>
>> >> sun50i-h6-pine-h64-model-b.dtb
>> >>
>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
>> >>
>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
>> >> dtb-$(CONFIG_ARCH_SUNXI) +=
>> sun50i-h616-bigtreetech-cb1-manta.dtb
>> >>
>> >> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
>> >>
>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
>> >>
>> >> diff --git
>> >>
>> >> a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >>
>> >> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> new
>> >>
>> >> file
>> >>
>> >> mode 100644
>> >> index 000000000000..b0d0386e8f13
>> >> --- /dev/null
>> >> +++
>> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >> @@ -0,0 +1,70 @@
>> >> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
>> >> +/*
>> >> + * Copyright (C) 2023 Martin Botka <[email protected]>.
>> >> + */
>> >> +
>> >> +/dts-v1/;
>> >> +
>> >> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
>> >> +
>> >> +/ {
>> >> + model = "BigTreeTech Pi";
>> >> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
>> >> +
>> >> + aliases {
>> >> + serial0 = &uart0;
>> >> + };
>> >> +
>> >> + chosen {
>> >> + stdout-path = "serial0:115200n8";
>> >> + };
>> >> +};
>> >> +
>> >> +&ehci0 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ehci1 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ehci2 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ehci3 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ir {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ohci0 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ohci1 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ohci2 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&ohci3 {
>> >> + status = "okay";
>> >> +};
>> >> +
>> >> +&spi0 {
>> >> + /* SPI connection for onboard connector for ADXL345
>> accelerometer
>> >
>> > */
>> >
>> >> + status = "okay";
>> >> + pinctrl-names = "default";
>> >> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
>> >
>> > Driver and compatible for ADXL345 already exists, why don't you
>> add
>> > child node
>> > for it?
>> >
>> > Best regards,
>> > Jernej
>>
>> Ah. So the ADXL345 actually wont be driven by kernel.
>
> DT is hardware description, it's not concerned what is done on
> software side,
> either kernel or user space.
Im aware. But this is not a device that is on the board. Its simply a
connector for the device.
Like Rpi has connectors for camera module :)
>
>> The SPI connection is enabled so that klipper (3d printer firmware)
>> can
>> be told to look for ADXL345 at this SPI and use it on its own.
>>
>> Klipper will initialize and communicate with the ADXL on its own.
>
> What do you mean by firmware? User space app? In this case I suppose
> you'll use
> direct SPI commands from user space? AFAIK that's less and less
> supported by
> kernel (in contrast to I2C).
Firmware as in 3d printer firmware. Klipper runs on the board (CB1 or
BTT Pi) and is indeed an userspace app.
And indeed uses direct SPI commands to the device.
The reason for this is the flexibility.
If Klipper read the values from kernel or well from the files the ADXL
driver would create
then it would be unable to communicate with ADXL that is on toolhead
board. Or would have to have
direct initialization either way for those. Thus it just controls the
ADXL itself :)
I understand that this may be bit confusing. If there is still
something not clear im more then happy to explain in
full detail how the userspace and 3D printer communicate :)
Cheers,
Martin.
>
> Best regards,
> Jernej
>
>>
>> >> +};
>> >> +
>> >> +&uart0 {
>> >> + pinctrl-names = "default";
>> >> + pinctrl-0 = <&uart0_ph_pins>;
>> >> + status = "okay";
>> >> +};
>
>
>
>
On Tue, Sep 5 2023 at 10:45:27 PM +02:00:00, Jernej ?krabec
<[email protected]> wrote:
> On Thursday, August 24, 2023 10:48:20 PM CEST Martin Botka wrote:
>> On Mon, Aug 14 2023 at 12:47:59 PM +02:00:00, Martin Botka
>>
>> <[email protected]> wrote:
>> > On Mon, Aug 14 2023 at 12:26:07 PM +02:00:00, Jernej ?krabec
>> >
>> > <[email protected]> wrote:
>> >> Dne nedelja, 13. avgust 2023 ob 18:22:49 CEST je Martin Botka
>> >>
>> >> napisal(a):
>> >>> On Sun, Aug 13 2023 at 05:55:35 PM +02:00:00, Jernej ?krabec
>> >>>
>> >>> <[email protected]> wrote:
>> >>> > Dne ponedeljek, 07. avgust 2023 ob 16:53:24 CEST je Martin
>> Botka
>> >>> >
>> >>> > napisal(a):
>> >>> >> The BigTreeTech Pi is an H616 based board based on CB1.
>> >>> >> Just in Rpi format board.
>> >>> >>
>> >>> >> It features the same internals as BTT CB1 but adds:
>> >>> >> - Fan port
>> >>> >> - IR receiver
>> >>> >> - ADXL345 Accelerometer connector via SPI
>> >>> >> - 24V DC power supply via terminal plugs
>> >>> >> - USB to CAN module connector (The actual USB to CAN
>> >>>
>> >>> happens on
>> >>>
>> >>> >> the
>> >>> >>
>> >>> >> external module)
>> >>> >>
>> >>> >> List of currently working things is same as BTT CB1 but
>> also:
>> >>> >> - IR receiver
>> >>> >> - ADXL345 connector
>> >>> >>
>> >>> >> Signed-off-by: Martin Botka <[email protected]>
>> >>> >> Reviewed-by: Andre Przywara <[email protected]>
>> >>> >> ---
>> >>> >>
>> >>> >> Changes in V2:
>> >>> >> - Add UART alongside aliases and chosen for it
>> >>> >> - Add model string
>> >>> >> - Enable IR receiver
>> >>> >> - Enable SPI0 for ADXL345 connector
>> >>> >>
>> >>> >> Changes in V3:
>> >>> >> - Add missing semicolons
>> >>> >> - Add pinctrl for SPI0
>> >>> >>
>> >>> >> arch/arm64/boot/dts/allwinner/Makefile | 1 +
>> >>> >> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
>> >>> >>
>> >>> >> +++++++++++++++++++
>> >>> >>
>> >>> >> 2 files changed, 71 insertions(+)
>> >>> >> create mode 100644
>> >>> >>
>> >>> >>
>> arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >>> >>
>> >>> >> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
>> >>> >> b/arch/arm64/boot/dts/allwinner/Makefile index
>> >>> >>
>> >>> >> 7b386428510b..0b6232a7f328
>> >>> >>
>> >>> >> 100644
>> >>> >> --- a/arch/arm64/boot/dts/allwinner/Makefile
>> >>> >> +++ b/arch/arm64/boot/dts/allwinner/Makefile
>> >>> >> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) +=
>> >>> >>
>> >>> >> sun50i-h6-pine-h64-model-b.dtb
>> >>> >>
>> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
>> >>> >>
>> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
>> >>> >> dtb-$(CONFIG_ARCH_SUNXI) +=
>> >>>
>> >>> sun50i-h616-bigtreetech-cb1-manta.dtb
>> >>>
>> >>> >> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
>> >>> >>
>> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
>> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
>> >>> >>
>> >>> >> diff --git
>> >>> >>
>> >>> >>
>> a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >>> >>
>> >>> >>
>> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >>>
>> >>> new
>> >>>
>> >>> >> file
>> >>> >>
>> >>> >> mode 100644
>> >>> >> index 000000000000..b0d0386e8f13
>> >>> >> --- /dev/null
>> >>> >> +++
>> >>>
>> >>> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
>> >>>
>> >>> >> @@ -0,0 +1,70 @@
>> >>> >> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
>> >>> >> +/*
>> >>> >> + * Copyright (C) 2023 Martin Botka <[email protected]>.
>> >>> >> + */
>> >>> >> +
>> >>> >> +/dts-v1/;
>> >>> >> +
>> >>> >> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
>> >>> >> +
>> >>> >> +/ {
>> >>> >> + model = "BigTreeTech Pi";
>> >>> >> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
>> >>> >> +
>> >>> >> + aliases {
>> >>> >> + serial0 = &uart0;
>> >>> >> + };
>> >>> >> +
>> >>> >> + chosen {
>> >>> >> + stdout-path = "serial0:115200n8";
>> >>> >> + };
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ehci0 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ehci1 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ehci2 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ehci3 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ir {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ohci0 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ohci1 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ohci2 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&ohci3 {
>> >>> >> + status = "okay";
>> >>> >> +};
>> >>> >> +
>> >>> >> +&spi0 {
>> >>> >> + /* SPI connection for onboard connector for ADXL345
>> >>>
>> >>> accelerometer
>> >>>
>> >>> > */
>> >>> >
>> >>> >> + status = "okay";
>> >>> >> + pinctrl-names = "default";
>> >>> >> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
>> >>> >
>> >>> > Driver and compatible for ADXL345 already exists, why don't
>> you
>> >>>
>> >>> add
>> >>>
>> >>> > child node
>> >>> > for it?
>> >>> >
>> >>> > Best regards,
>> >>> > Jernej
>> >>>
>> >>> Ah. So the ADXL345 actually wont be driven by kernel.
>> >>
>> >> DT is hardware description, it's not concerned what is done on
>> >> software side,
>> >> either kernel or user space.
>> >
>> > Im aware. But this is not a device that is on the board. Its
>> simply a
>> > connector for the device.
>> > Like Rpi has connectors for camera module :)
>
> Actually it matters only if this other board is firmly connected with
> base
> board. If it is not, then SPI node should be dropped and be handled
> with DT
> overlays.
Got it. Will drop it then.
>
>> >
>> >>> The SPI connection is enabled so that klipper (3d printer
>> >>>
>> >>> firmware) can
>> >>>
>> >>> be told to look for ADXL345 at this SPI and use it on its own.
>> >>>
>> >>> Klipper will initialize and communicate with the ADXL on its
>> own.
>> >>
>> >> What do you mean by firmware? User space app? In this case I
>> suppose
>> >> you'll use
>> >> direct SPI commands from user space? AFAIK that's less and less
>> >> supported by
>> >> kernel (in contrast to I2C).
>> >
>> > Firmware as in 3d printer firmware. Klipper runs on the board
>> (CB1 or
>> > BTT Pi) and is indeed an userspace app.
>> > And indeed uses direct SPI commands to the device.
>> >
>> > The reason for this is the flexibility.
>> > If Klipper read the values from kernel or well from the files the
>> > ADXL driver would create
>> > then it would be unable to communicate with ADXL that is on
>> toolhead
>> > board. Or would have to have
>> > direct initialization either way for those. Thus it just controls
>> the
>> > ADXL itself :)
>> >
>> > I understand that this may be bit confusing. If there is still
>> > something not clear im more then happy to explain in
>> > full detail how the userspace and 3D printer communicate :)
>
> As I said, DT doesn't care about implementation. DT is HW
> description, so
> either if it's fixed connection (soldered wires), then describe in
> full,
> otherwise it's considered addon board and thus non-essential, so it
> should be
> handled with DT overlays.
OK
>
> Can be CB1 bought separately from 3D printer package and thus used
> without
> ADXL sensor?
Yes
>
>> >
>> > Cheers,
>> > Martin.
>>
>> Hello,
>> Jernej any comments on this ?
>> I would like to resolve this conversation :)
>> We do have a bunch of time before the new cycle but never hurts to
>> get
>> it figured out ahead of time :)
>
> Sorry, not enough free time over summer.
No worries :)
Cheers,
Martin
>
> Best regards,
> Jernej
>
>>
>> Cheers,
>> Martin
>>
>> >> Best regards,
>> >> Jernej
>> >>
>> >>> >> +};
>> >>> >> +
>> >>> >> +&uart0 {
>> >>> >> + pinctrl-names = "default";
>> >>> >> + pinctrl-0 = <&uart0_ph_pins>;
>> >>> >> + status = "okay";
>> >>> >> +};
>
>
>
>
On Thursday, August 24, 2023 10:48:20 PM CEST Martin Botka wrote:
> On Mon, Aug 14 2023 at 12:47:59 PM +02:00:00, Martin Botka
>
> <[email protected]> wrote:
> > On Mon, Aug 14 2023 at 12:26:07 PM +02:00:00, Jernej Škrabec
> >
> > <[email protected]> wrote:
> >> Dne nedelja, 13. avgust 2023 ob 18:22:49 CEST je Martin Botka
> >>
> >> napisal(a):
> >>> On Sun, Aug 13 2023 at 05:55:35 PM +02:00:00, Jernej Škrabec
> >>>
> >>> <[email protected]> wrote:
> >>> > Dne ponedeljek, 07. avgust 2023 ob 16:53:24 CEST je Martin Botka
> >>> >
> >>> > napisal(a):
> >>> >> The BigTreeTech Pi is an H616 based board based on CB1.
> >>> >> Just in Rpi format board.
> >>> >>
> >>> >> It features the same internals as BTT CB1 but adds:
> >>> >> - Fan port
> >>> >> - IR receiver
> >>> >> - ADXL345 Accelerometer connector via SPI
> >>> >> - 24V DC power supply via terminal plugs
> >>> >> - USB to CAN module connector (The actual USB to CAN
> >>>
> >>> happens on
> >>>
> >>> >> the
> >>> >>
> >>> >> external module)
> >>> >>
> >>> >> List of currently working things is same as BTT CB1 but also:
> >>> >> - IR receiver
> >>> >> - ADXL345 connector
> >>> >>
> >>> >> Signed-off-by: Martin Botka <[email protected]>
> >>> >> Reviewed-by: Andre Przywara <[email protected]>
> >>> >> ---
> >>> >>
> >>> >> Changes in V2:
> >>> >> - Add UART alongside aliases and chosen for it
> >>> >> - Add model string
> >>> >> - Enable IR receiver
> >>> >> - Enable SPI0 for ADXL345 connector
> >>> >>
> >>> >> Changes in V3:
> >>> >> - Add missing semicolons
> >>> >> - Add pinctrl for SPI0
> >>> >>
> >>> >> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> >>> >> .../allwinner/sun50i-h616-bigtreetech-pi.dts | 70
> >>> >>
> >>> >> +++++++++++++++++++
> >>> >>
> >>> >> 2 files changed, 71 insertions(+)
> >>> >> create mode 100644
> >>> >>
> >>> >> arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >>> >>
> >>> >> diff --git a/arch/arm64/boot/dts/allwinner/Makefile
> >>> >> b/arch/arm64/boot/dts/allwinner/Makefile index
> >>> >>
> >>> >> 7b386428510b..0b6232a7f328
> >>> >>
> >>> >> 100644
> >>> >> --- a/arch/arm64/boot/dts/allwinner/Makefile
> >>> >> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> >>> >> @@ -39,5 +39,6 @@ dtb-$(CONFIG_ARCH_SUNXI) +=
> >>> >>
> >>> >> sun50i-h6-pine-h64-model-b.dtb
> >>> >>
> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
> >>> >>
> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
> >>> >> dtb-$(CONFIG_ARCH_SUNXI) +=
> >>>
> >>> sun50i-h616-bigtreetech-cb1-manta.dtb
> >>>
> >>> >> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
> >>> >>
> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
> >>> >> dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
> >>> >>
> >>> >> diff --git
> >>> >>
> >>> >> a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >>> >>
> >>> >> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >>>
> >>> new
> >>>
> >>> >> file
> >>> >>
> >>> >> mode 100644
> >>> >> index 000000000000..b0d0386e8f13
> >>> >> --- /dev/null
> >>> >> +++
> >>>
> >>> b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-pi.dts
> >>>
> >>> >> @@ -0,0 +1,70 @@
> >>> >> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> >>> >> +/*
> >>> >> + * Copyright (C) 2023 Martin Botka <[email protected]>.
> >>> >> + */
> >>> >> +
> >>> >> +/dts-v1/;
> >>> >> +
> >>> >> +#include "sun50i-h616-bigtreetech-cb1.dtsi"
> >>> >> +
> >>> >> +/ {
> >>> >> + model = "BigTreeTech Pi";
> >>> >> + compatible = "bigtreetech,pi", "allwinner,sun50i-h616";
> >>> >> +
> >>> >> + aliases {
> >>> >> + serial0 = &uart0;
> >>> >> + };
> >>> >> +
> >>> >> + chosen {
> >>> >> + stdout-path = "serial0:115200n8";
> >>> >> + };
> >>> >> +};
> >>> >> +
> >>> >> +&ehci0 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ehci1 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ehci2 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ehci3 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ir {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ohci0 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ohci1 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ohci2 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&ohci3 {
> >>> >> + status = "okay";
> >>> >> +};
> >>> >> +
> >>> >> +&spi0 {
> >>> >> + /* SPI connection for onboard connector for ADXL345
> >>>
> >>> accelerometer
> >>>
> >>> > */
> >>> >
> >>> >> + status = "okay";
> >>> >> + pinctrl-names = "default";
> >>> >> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
> >>> >
> >>> > Driver and compatible for ADXL345 already exists, why don't you
> >>>
> >>> add
> >>>
> >>> > child node
> >>> > for it?
> >>> >
> >>> > Best regards,
> >>> > Jernej
> >>>
> >>> Ah. So the ADXL345 actually wont be driven by kernel.
> >>
> >> DT is hardware description, it's not concerned what is done on
> >> software side,
> >> either kernel or user space.
> >
> > Im aware. But this is not a device that is on the board. Its simply a
> > connector for the device.
> > Like Rpi has connectors for camera module :)
Actually it matters only if this other board is firmly connected with base
board. If it is not, then SPI node should be dropped and be handled with DT
overlays.
> >
> >>> The SPI connection is enabled so that klipper (3d printer
> >>>
> >>> firmware) can
> >>>
> >>> be told to look for ADXL345 at this SPI and use it on its own.
> >>>
> >>> Klipper will initialize and communicate with the ADXL on its own.
> >>
> >> What do you mean by firmware? User space app? In this case I suppose
> >> you'll use
> >> direct SPI commands from user space? AFAIK that's less and less
> >> supported by
> >> kernel (in contrast to I2C).
> >
> > Firmware as in 3d printer firmware. Klipper runs on the board (CB1 or
> > BTT Pi) and is indeed an userspace app.
> > And indeed uses direct SPI commands to the device.
> >
> > The reason for this is the flexibility.
> > If Klipper read the values from kernel or well from the files the
> > ADXL driver would create
> > then it would be unable to communicate with ADXL that is on toolhead
> > board. Or would have to have
> > direct initialization either way for those. Thus it just controls the
> > ADXL itself :)
> >
> > I understand that this may be bit confusing. If there is still
> > something not clear im more then happy to explain in
> > full detail how the userspace and 3D printer communicate :)
As I said, DT doesn't care about implementation. DT is HW description, so
either if it's fixed connection (soldered wires), then describe in full,
otherwise it's considered addon board and thus non-essential, so it should be
handled with DT overlays.
Can be CB1 bought separately from 3D printer package and thus used without
ADXL sensor?
> >
> > Cheers,
> > Martin.
>
> Hello,
> Jernej any comments on this ?
> I would like to resolve this conversation :)
> We do have a bunch of time before the new cycle but never hurts to get
> it figured out ahead of time :)
Sorry, not enough free time over summer.
Best regards,
Jernej
>
> Cheers,
> Martin
>
> >> Best regards,
> >> Jernej
> >>
> >>> >> +};
> >>> >> +
> >>> >> +&uart0 {
> >>> >> + pinctrl-names = "default";
> >>> >> + pinctrl-0 = <&uart0_ph_pins>;
> >>> >> + status = "okay";
> >>> >> +};