On Sun, 18 Jul 2021, Robert Marko wrote: > On Wed, Jul 14, 2021 at 12:25 AM Rob Herring <robh@xxxxxxxxxx> wrote: > > > > On Fri, Jun 25, 2021 at 01:46:08PM +0200, Robert Marko wrote: > > > On Mon, Jun 7, 2021 at 2:33 PM Robert Marko <robert.marko@xxxxxxxxxx> wrote: > > > > > > > > Add binding documents for the Delta TN48M CPLD drivers. > > > > > > > > Signed-off-by: Robert Marko <robert.marko@xxxxxxxxxx> > > > > --- > > > > Changes in v3: > > > > * Include bindings for reset driver > > > > > > > > Changes in v2: > > > > * Implement MFD as a simple I2C MFD > > > > * Add GPIO bindings as separate > > > > > > > > .../bindings/gpio/delta,tn48m-gpio.yaml | 42 +++++++++ > > > > .../bindings/mfd/delta,tn48m-cpld.yaml | 90 +++++++++++++++++++ > > > > .../bindings/reset/delta,tn48m-reset.yaml | 35 ++++++++ > > > > 3 files changed, 167 insertions(+) > > > > create mode 100644 Documentation/devicetree/bindings/gpio/delta,tn48m-gpio.yaml > > > > create mode 100644 Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml > > > > create mode 100644 Documentation/devicetree/bindings/reset/delta,tn48m-reset.yaml > > > > > > > > diff --git a/Documentation/devicetree/bindings/gpio/delta,tn48m-gpio.yaml b/Documentation/devicetree/bindings/gpio/delta,tn48m-gpio.yaml > > > > new file mode 100644 > > > > index 000000000000..aca646aecb12 > > > > --- /dev/null > > > > +++ b/Documentation/devicetree/bindings/gpio/delta,tn48m-gpio.yaml > > > > @@ -0,0 +1,42 @@ > > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > > > +%YAML 1.2 > > > > +--- > > > > +$id: http://devicetree.org/schemas/gpio/delta,tn48m-gpio.yaml# > > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > > + > > > > +title: Delta Networks TN48M CPLD GPIO controller > > > > + > > > > +maintainers: > > > > + - Robert Marko <robert.marko@xxxxxxxxxx> > > > > + > > > > +description: | > > > > + This module is part of the Delta TN48M multi-function device. For more > > > > + details see ../mfd/delta,tn48m-cpld.yaml. > > > > + > > > > + GPIO controller module provides GPIO-s for the SFP slots. > > > > + It is split into 3 controllers, one output only for the SFP TX disable > > > > + pins, one input only for the SFP present pins and one input only for > > > > + the SFP LOS pins. > > > > + > > > > +properties: > > > > + compatible: > > > > + enum: > > > > + - delta,tn48m-gpio-sfp-tx-disable > > > > + - delta,tn48m-gpio-sfp-present > > > > + - delta,tn48m-gpio-sfp-los > > > > + > > > > + reg: > > > > + maxItems: 1 > > > > + > > > > + "#gpio-cells": > > > > + const: 2 > > > > + > > > > + gpio-controller: true > > > > + > > > > +required: > > > > + - compatible > > > > + - reg > > > > + - "#gpio-cells" > > > > + - gpio-controller > > > > + > > > > +additionalProperties: false > > > > diff --git a/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml b/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml > > > > new file mode 100644 > > > > index 000000000000..2c6e2adf73ca > > > > --- /dev/null > > > > +++ b/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml > > > > @@ -0,0 +1,90 @@ > > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > > > +%YAML 1.2 > > > > +--- > > > > +$id: http://devicetree.org/schemas/mfd/delta,tn48m-cpld.yaml# > > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > > + > > > > +title: Delta Networks TN48M CPLD controller > > > > + > > > > +maintainers: > > > > + - Robert Marko <robert.marko@xxxxxxxxxx> > > > > + > > > > +description: | > > > > + Lattice CPLD onboard the TN48M switches is used for system > > > > + management. > > > > + > > > > + It provides information about the hardware model, revision, > > > > + PSU status etc. > > > > + > > > > + It is also being used as a GPIO expander for the SFP slots and > > > > + reset controller for the switch MAC-s and other peripherals. > > > > + > > > > +properties: > > > > + compatible: > > > > + const: delta,tn48m-cpld > > > > + > > > > + reg: > > > > + description: > > > > + I2C device address. > > > > + maxItems: 1 > > > > + > > > > + "#address-cells": > > > > + const: 1 > > > > + > > > > + "#size-cells": > > > > + const: 0 > > > > + > > > > +required: > > > > + - compatible > > > > + - reg > > > > + - "#address-cells" > > > > + - "#size-cells" > > > > + > > > > +patternProperties: > > > > + "^gpio(@[0-9a-f]+)?$": > > > > + $ref: ../gpio/delta,tn48m-gpio.yaml > > > > + > > > > + "^reset-controller?$": > > > > + $ref: ../reset/delta,tn48m-reset.yaml > > > > + > > > > +additionalProperties: false > > > > + > > > > +examples: > > > > + - | > > > > + i2c { > > > > + #address-cells = <1>; > > > > + #size-cells = <0>; > > > > + > > > > + cpld@41 { > > > > + compatible = "delta,tn48m-cpld"; > > > > + reg = <0x41>; > > > > + #address-cells = <1>; > > > > + #size-cells = <0>; > > > > + > > > > + gpio@31 { > > > > + compatible = "delta,tn48m-gpio-sfp-tx-disable"; > > > > + reg = <0x31>; > > > > + gpio-controller; > > > > + #gpio-cells = <2>; > > > > + }; > > > > + > > > > + gpio@3a { > > > > + compatible = "delta,tn48m-gpio-sfp-present"; > > > > + reg = <0x3a>; > > > > + gpio-controller; > > > > + #gpio-cells = <2>; > > > > + }; > > > > + > > > > + gpio@40 { > > > > + compatible = "delta,tn48m-gpio-sfp-los"; > > > > + reg = <0x40>; > > > > + gpio-controller; > > > > + #gpio-cells = <2>; > > > > + }; > > > > + > > > > + reset-controller { > > > > + compatible = "delta,tn48m-reset"; > > > > + #reset-cells = <1>; > > > > + }; > > > > + }; > > > > + }; > > > > diff --git a/Documentation/devicetree/bindings/reset/delta,tn48m-reset.yaml b/Documentation/devicetree/bindings/reset/delta,tn48m-reset.yaml > > > > new file mode 100644 > > > > index 000000000000..0e5ee8decc0d > > > > --- /dev/null > > > > +++ b/Documentation/devicetree/bindings/reset/delta,tn48m-reset.yaml > > > > @@ -0,0 +1,35 @@ > > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > > > +%YAML 1.2 > > > > +--- > > > > +$id: http://devicetree.org/schemas/reset/delta,tn48m-reset.yaml# > > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > > + > > > > +title: Delta Networks TN48M CPLD reset controller > > > > + > > > > +maintainers: > > > > + - Robert Marko <robert.marko@xxxxxxxxxx> > > > > + > > > > +description: | > > > > + This module is part of the Delta TN48M multi-function device. For more > > > > + details see ../mfd/delta,tn48m-cpld.yaml. > > > > + > > > > + Reset controller modules provides resets for the following: > > > > + * 88F7040 SoC > > > > + * 88F6820 SoC > > > > + * 98DX3265 switch MAC-s > > > > + * 88E1680 PHY-s > > > > + * 88E1512 PHY > > > > + * PoE PSE controller > > > > + > > > > +properties: > > > > + compatible: > > > > + const: delta,tn48m-reset > > > > + > > > > + "#reset-cells": > > > > + const: 1 > > > > + > > > > +required: > > > > + - compatible > > > > + - "#reset-cells" > > > > + > > > > +additionalProperties: false > > > > > > > > > > Are there any issues with the bindings? > > > > Yes. Primarily the GPIO function being part of the compatible. I'm > > surprised Linus W is okay with that. > > I think I already explained this before, having a single compatible > won't work here. > Then there would not be anything to know whether its input or output > only as the pins have specific purpose. Properties? > And knowing the capabilites is a requirment of the GPIO regmap driver > and the GPIO > core itself as it exposes that information in a generic manner and > driver like for the > SFP bus use that. -- Lee Jones [李琼斯] Senior Technical Lead - Developer Services Linaro.org │ Open source software for Arm SoCs Follow Linaro: Facebook | Twitter | Blog
