Document support for Airoha AN8855 Switch SoC. This SoC expose various
peripherals like an Ethernet Switch, a NVMEM provider and Ethernet PHYs.
It does also support i2c and timers but those are not currently
supported/used.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
.../bindings/mfd/airoha,an8855.yaml | 175 ++++++++++++++++++
1 file changed, 175 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
diff --git a/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
new file mode 100644
index 000000000000..a683db4f41d1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
@@ -0,0 +1,175 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/airoha,an8855.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha AN8855 Switch SoC
+
+maintainers:
+ - Christian Marangi <ansuelsmth@gmail.com>
+
+description: >
+ Airoha AN8855 Switch is a SoC that expose various peripherals like an
+ Ethernet Switch, a NVMEM provider and Ethernet PHYs.
+
+ It does also support i2c and timers but those are not currently
+ supported/used.
+
+properties:
+ compatible:
+ const: airoha,an8855
+
+ reg:
+ maxItems: 1
+
+ reset-gpios: true
+
+ efuse:
+ type: object
+ $ref: /schemas/nvmem/airoha,an8855-efuse.yaml
+ description: EFUSE exposed by the Airoha AN8855 SoC
+
+ ethernet-switch:
+ type: object
+ $ref: /schemas/net/dsa/airoha,an8855-switch.yaml
+ description: Switch exposed by the Airoha AN8855 SoC
+
+ mdio:
+ type: object
+ $ref: /schemas/net/airoha,an8855-mdio.yaml
+ description: MDIO exposed by the Airoha AN8855 SoC
+
+required:
+ - compatible
+ - reg
+ - mdio
+ - ethernet-switch
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ soc@1 {
+ compatible = "airoha,an8855";
+ reg = <1>;
+
+ reset-gpios = <&pio 39 0>;
+
+ efuse {
+ compatible = "airoha,an8855-efuse";
+
+ #nvmem-cell-cells = <0>;
+
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ shift_sel_port0_tx_a: shift-sel-port0-tx-a@c {
+ reg = <0xc 0x4>;
+ };
+
+ shift_sel_port0_tx_b: shift-sel-port0-tx-b@10 {
+ reg = <0x10 0x4>;
+ };
+
+ shift_sel_port0_tx_c: shift-sel-port0-tx-c@14 {
+ reg = <0x14 0x4>;
+ };
+
+ shift_sel_port0_tx_d: shift-sel-port0-tx-d@18 {
+ reg = <0x18 0x4>;
+ };
+
+ shift_sel_port1_tx_a: shift-sel-port1-tx-a@1c {
+ reg = <0x1c 0x4>;
+ };
+
+ shift_sel_port1_tx_b: shift-sel-port1-tx-b@20 {
+ reg = <0x20 0x4>;
+ };
+
+ shift_sel_port1_tx_c: shift-sel-port1-tx-c@24 {
+ reg = <0x24 0x4>;
+ };
+
+ shift_sel_port1_tx_d: shift-sel-port1-tx-d@28 {
+ reg = <0x28 0x4>;
+ };
+ };
+ };
+
+ ethernet-switch {
+ compatible = "airoha,an8855-switch";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ phy-mode = "internal";
+ phy-handle = <&internal_phy1>;
+ };
+
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ phy-mode = "internal";
+ phy-handle = <&internal_phy2>;
+ };
+
+ port@5 {
+ reg = <5>;
+ label = "cpu";
+ ethernet = <&gmac0>;
+ phy-mode = "2500base-x";
+
+ fixed-link {
+ speed = <2500>;
+ full-duplex;
+ pause;
+ };
+ };
+ };
+ };
+
+ mdio {
+ compatible = "airoha,an8855-mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ internal_phy1: ethernet-phy@1 {
+ compatible = "ethernet-phy-idc0ff.0410",
+ "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+
+ nvmem-cells = <&shift_sel_port0_tx_a>,
+ <&shift_sel_port0_tx_b>,
+ <&shift_sel_port0_tx_c>,
+ <&shift_sel_port0_tx_d>;
+ nvmem-cell-names = "tx_a", "tx_b", "tx_c", "tx_d";
+ };
+
+ internal_phy2: ethernet-phy@2 {
+ compatible = "ethernet-phy-idc0ff.0410",
+ "ethernet-phy-ieee802.3-c22";
+ reg = <2>;
+
+ nvmem-cells = <&shift_sel_port1_tx_a>,
+ <&shift_sel_port1_tx_b>,
+ <&shift_sel_port1_tx_c>,
+ <&shift_sel_port1_tx_d>;
+ nvmem-cell-names = "tx_a", "tx_b", "tx_c", "tx_d";
+ };
+ };
+ };
+ };
--
2.48.1On Thu, Jun 26, 2025 at 11:23:04PM +0200, Christian Marangi wrote:
> Document support for Airoha AN8855 Switch SoC. This SoC expose various
> peripherals like an Ethernet Switch, a NVMEM provider and Ethernet PHYs.
>
> It does also support i2c and timers but those are not currently
> supported/used.
>
> Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
> ---
> .../bindings/mfd/airoha,an8855.yaml | 175 ++++++++++++++++++
> 1 file changed, 175 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
>
> diff --git a/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
> new file mode 100644
> index 000000000000..a683db4f41d1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
> @@ -0,0 +1,175 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/airoha,an8855.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Airoha AN8855 Switch SoC
> +
> +maintainers:
> + - Christian Marangi <ansuelsmth@gmail.com>
> +
> +description: >
> + Airoha AN8855 Switch is a SoC that expose various peripherals like an
> + Ethernet Switch, a NVMEM provider and Ethernet PHYs.
> +
> + It does also support i2c and timers but those are not currently
> + supported/used.
> +
> +properties:
> + compatible:
> + const: airoha,an8855
> +
> + reg:
> + maxItems: 1
> +
> + reset-gpios: true
> +
> + efuse:
> + type: object
> + $ref: /schemas/nvmem/airoha,an8855-efuse.yaml
> + description: EFUSE exposed by the Airoha AN8855 SoC
> +
> + ethernet-switch:
> + type: object
> + $ref: /schemas/net/dsa/airoha,an8855-switch.yaml
> + description: Switch exposed by the Airoha AN8855 SoC
> +
> + mdio:
> + type: object
> + $ref: /schemas/net/airoha,an8855-mdio.yaml
> + description: MDIO exposed by the Airoha AN8855 SoC
> +
> +required:
> + - compatible
> + - reg
> + - mdio
> + - ethernet-switch
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> +
> + mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + soc@1 {
> + compatible = "airoha,an8855";
> + reg = <1>;
> +
> + reset-gpios = <&pio 39 0>;
> +
> + efuse {
> + compatible = "airoha,an8855-efuse";
> +
> + #nvmem-cell-cells = <0>;
> +
> + nvmem-layout {
> + compatible = "fixed-layout";
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + shift_sel_port0_tx_a: shift-sel-port0-tx-a@c {
> + reg = <0xc 0x4>;
> + };
> +
> + shift_sel_port0_tx_b: shift-sel-port0-tx-b@10 {
> + reg = <0x10 0x4>;
> + };
> +
> + shift_sel_port0_tx_c: shift-sel-port0-tx-c@14 {
> + reg = <0x14 0x4>;
> + };
> +
> + shift_sel_port0_tx_d: shift-sel-port0-tx-d@18 {
> + reg = <0x18 0x4>;
> + };
> +
> + shift_sel_port1_tx_a: shift-sel-port1-tx-a@1c {
> + reg = <0x1c 0x4>;
> + };
> +
> + shift_sel_port1_tx_b: shift-sel-port1-tx-b@20 {
> + reg = <0x20 0x4>;
> + };
> +
> + shift_sel_port1_tx_c: shift-sel-port1-tx-c@24 {
> + reg = <0x24 0x4>;
> + };
> +
> + shift_sel_port1_tx_d: shift-sel-port1-tx-d@28 {
> + reg = <0x28 0x4>;
> + };
> + };
> + };
> +
> + ethernet-switch {
> + compatible = "airoha,an8855-switch";
> +
> + ports {
Same comment here.
Why do we need 2 examples of the same thing? Isn't this 1 complete
example here enough?
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Rob
On Fri, Jun 27, 2025 at 04:48:21PM -0500, Rob Herring wrote:
> On Thu, Jun 26, 2025 at 11:23:04PM +0200, Christian Marangi wrote:
> > Document support for Airoha AN8855 Switch SoC. This SoC expose various
> > peripherals like an Ethernet Switch, a NVMEM provider and Ethernet PHYs.
> >
> > It does also support i2c and timers but those are not currently
> > supported/used.
> >
> > Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
> > ---
> > .../bindings/mfd/airoha,an8855.yaml | 175 ++++++++++++++++++
> > 1 file changed, 175 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
> > new file mode 100644
> > index 000000000000..a683db4f41d1
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mfd/airoha,an8855.yaml
> > @@ -0,0 +1,175 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/mfd/airoha,an8855.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Airoha AN8855 Switch SoC
> > +
> > +maintainers:
> > + - Christian Marangi <ansuelsmth@gmail.com>
> > +
> > +description: >
> > + Airoha AN8855 Switch is a SoC that expose various peripherals like an
> > + Ethernet Switch, a NVMEM provider and Ethernet PHYs.
> > +
> > + It does also support i2c and timers but those are not currently
> > + supported/used.
> > +
> > +properties:
> > + compatible:
> > + const: airoha,an8855
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + reset-gpios: true
> > +
> > + efuse:
> > + type: object
> > + $ref: /schemas/nvmem/airoha,an8855-efuse.yaml
> > + description: EFUSE exposed by the Airoha AN8855 SoC
> > +
> > + ethernet-switch:
> > + type: object
> > + $ref: /schemas/net/dsa/airoha,an8855-switch.yaml
> > + description: Switch exposed by the Airoha AN8855 SoC
> > +
> > + mdio:
> > + type: object
> > + $ref: /schemas/net/airoha,an8855-mdio.yaml
> > + description: MDIO exposed by the Airoha AN8855 SoC
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - mdio
> > + - ethernet-switch
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/gpio/gpio.h>
> > +
> > + mdio {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + soc@1 {
> > + compatible = "airoha,an8855";
> > + reg = <1>;
> > +
> > + reset-gpios = <&pio 39 0>;
> > +
> > + efuse {
> > + compatible = "airoha,an8855-efuse";
> > +
> > + #nvmem-cell-cells = <0>;
> > +
> > + nvmem-layout {
> > + compatible = "fixed-layout";
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > +
> > + shift_sel_port0_tx_a: shift-sel-port0-tx-a@c {
> > + reg = <0xc 0x4>;
> > + };
> > +
> > + shift_sel_port0_tx_b: shift-sel-port0-tx-b@10 {
> > + reg = <0x10 0x4>;
> > + };
> > +
> > + shift_sel_port0_tx_c: shift-sel-port0-tx-c@14 {
> > + reg = <0x14 0x4>;
> > + };
> > +
> > + shift_sel_port0_tx_d: shift-sel-port0-tx-d@18 {
> > + reg = <0x18 0x4>;
> > + };
> > +
> > + shift_sel_port1_tx_a: shift-sel-port1-tx-a@1c {
> > + reg = <0x1c 0x4>;
> > + };
> > +
> > + shift_sel_port1_tx_b: shift-sel-port1-tx-b@20 {
> > + reg = <0x20 0x4>;
> > + };
> > +
> > + shift_sel_port1_tx_c: shift-sel-port1-tx-c@24 {
> > + reg = <0x24 0x4>;
> > + };
> > +
> > + shift_sel_port1_tx_d: shift-sel-port1-tx-d@28 {
> > + reg = <0x28 0x4>;
> > + };
> > + };
> > + };
> > +
> > + ethernet-switch {
> > + compatible = "airoha,an8855-switch";
> > +
> > + ports {
>
> Same comment here.
>
> Why do we need 2 examples of the same thing? Isn't this 1 complete
> example here enough?
>
Do you prefer if I drop example from every other schema and keep only
this?
And with this change is it ok to keep the review tag?
--
Ansuel
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