[v1,2/3] dt-bindings: mmc: Add bindings for LiteSDCard

LiteSDCard is a small footprint, configurable SDCard core for FPGA
based system on chips.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
---
 .../devicetree/bindings/mmc/litex,mmc.yaml    | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/litex,mmc.yaml

Hi Gabriel,

On Sat, Dec 4, 2021 at 12:42 AM Gabriel Somlo <gsomlo@gmail.com> wrote:
> LiteSDCard is a small footprint, configurable SDCard core for FPGA
> based system on chips.
>
> Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>

Thanks for your patch!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/litex,mmc.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/litex,mmc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: LiteX LiteSDCard device
> +
> +maintainers:
> +  - Gabriel Somlo <gsomlo@gmail.com>
> +
> +description: |
> +  LiteSDCard is a small footprint, configurable SDCard core for FPGA based
> +  system on chips.
> +
> +  The hardware source is Open Source and can be found on at
> +  https://github.com/enjoy-digital/litesdcard/.
> +
> +allOf:
> +  - $ref: mmc-controller.yaml#
> +
> +properties:
> +  compatible:
> +    const: litex,mmc
> +
> +  reg:
> +    items:
> +      - description: PHY registers
> +      - description: CORE registers
> +      - description: DMA Reader buffer
> +      - description: DMA Writer buffer
> +      - description: IRQ registers
> +
> +  reg-names:
> +    items:
> +      - const: phy
> +      - const: core
> +      - const: reader
> +      - const: writer
> +      - const: irq
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg

reg-names?

(and updating litex/tools/litex_json2dts_linux.py to add it)

> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    mmc: mmc@12005000 {
> +        compatible = "litex,mmc";
> +        reg = <0x12005000 0x100>,
> +              <0x12003800 0x100>,
> +              <0x12003000 0x100>,
> +              <0x12004800 0x100>,
> +              <0x12004000 0x100>;
> +        reg-names = "phy", "core", "reader", "writer", "irq";
> +        interrupts = <4>;
> +    };

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

On Mon, Dec 06, 2021 at 10:38:07AM +0100, Geert Uytterhoeven wrote:
> Hi Gabriel,
> 
> On Sat, Dec 4, 2021 at 12:42 AM Gabriel Somlo <gsomlo@gmail.com> wrote:
> > LiteSDCard is a small footprint, configurable SDCard core for FPGA
> > based system on chips.
> >
> > Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
> 
> Thanks for your patch!
> 
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mmc/litex,mmc.yaml
> > @@ -0,0 +1,63 @@
> > +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/mmc/litex,mmc.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: LiteX LiteSDCard device
> > +
> > +maintainers:
> > +  - Gabriel Somlo <gsomlo@gmail.com>
> > +
> > +description: |
> > +  LiteSDCard is a small footprint, configurable SDCard core for FPGA based
> > +  system on chips.
> > +
> > +  The hardware source is Open Source and can be found on at
> > +  https://github.com/enjoy-digital/litesdcard/.
> > +
> > +allOf:
> > +  - $ref: mmc-controller.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    const: litex,mmc
> > +
> > +  reg:
> > +    items:
> > +      - description: PHY registers
> > +      - description: CORE registers
> > +      - description: DMA Reader buffer
> > +      - description: DMA Writer buffer
> > +      - description: IRQ registers
> > +
> > +  reg-names:
> > +    items:
> > +      - const: phy
> > +      - const: core
> > +      - const: reader
> > +      - const: writer
> > +      - const: irq
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> 
> reg-names?
> 
> (and updating litex/tools/litex_json2dts_linux.py to add it)

Thanks, I missed `reg-names` originally, and have added it to the
list. And yes, once we agree on all this, I'll submit a matching
update to litex_json2dts_linux.py 

Thanks,
--Gabriel
 
> > +  - interrupts
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    mmc: mmc@12005000 {
> > +        compatible = "litex,mmc";
> > +        reg = <0x12005000 0x100>,
> > +              <0x12003800 0x100>,
> > +              <0x12003000 0x100>,
> > +              <0x12004800 0x100>,
> > +              <0x12004000 0x100>;
> > +        reg-names = "phy", "core", "reader", "writer", "irq";
> > +        interrupts = <4>;
> > +    };
> 
> 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