* [PATCH 1/3] ARM: dts: marvell: Fix some common switch mistakes
2023-10-12 22:35 [PATCH 0/3] Create a binding for the Marvell MV88E6xxx DSA switches Linus Walleij
@ 2023-10-12 22:35 ` Linus Walleij
2023-10-12 22:35 ` [PATCH 2/3] RFC: dt-bindings: marvell: Rewrite in schema Linus Walleij
2023-10-12 22:35 ` [PATCH 3/3] RFC: net: dsa: mv88e6xxx: Register mdio-external Linus Walleij
2 siblings, 0 replies; 11+ messages in thread
From: Linus Walleij @ 2023-10-12 22:35 UTC (permalink / raw)
To: Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Russell King, Florian Fainelli,
Vladimir Oltean, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni
Cc: Christian Marangi, linux-arm-kernel, devicetree, linux-kernel,
netdev, Linus Walleij
Fix some errors in the Marvell MV88E6xxx switch descriptions:
- The top node had no address size or cells.
- switch0@0 is not OK, should be switch@0.
This serves as an example of fixes needed for introducing a
schema for the bindings, but the patch can simply be applied.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/boot/dts/marvell/armada-370-rd.dts | 2 --
arch/arm/boot/dts/marvell/armada-381-netgear-gs110emx.dts | 2 --
arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-l8.dts | 2 +-
arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-s4.dts | 2 +-
arch/arm/boot/dts/marvell/armada-385-linksys.dtsi | 2 --
arch/arm/boot/dts/marvell/armada-388-clearfog.dts | 2 --
arch/arm/boot/dts/marvell/armada-xp-linksys-mamba.dts | 2 --
7 files changed, 2 insertions(+), 12 deletions(-)
diff --git a/arch/arm/boot/dts/marvell/armada-370-rd.dts b/arch/arm/boot/dts/marvell/armada-370-rd.dts
index b459a670f615..e3a1834986ee 100644
--- a/arch/arm/boot/dts/marvell/armada-370-rd.dts
+++ b/arch/arm/boot/dts/marvell/armada-370-rd.dts
@@ -151,8 +151,6 @@ led@0 {
switch: switch@10 {
compatible = "marvell,mv88e6085";
- #address-cells = <1>;
- #size-cells = <0>;
reg = <0x10>;
interrupt-controller;
#interrupt-cells = <2>;
diff --git a/arch/arm/boot/dts/marvell/armada-381-netgear-gs110emx.dts b/arch/arm/boot/dts/marvell/armada-381-netgear-gs110emx.dts
index f4c4b213ef4e..d4fff4ea9f20 100644
--- a/arch/arm/boot/dts/marvell/armada-381-netgear-gs110emx.dts
+++ b/arch/arm/boot/dts/marvell/armada-381-netgear-gs110emx.dts
@@ -79,14 +79,12 @@ &mdio {
switch@0 {
compatible = "marvell,mv88e6190";
- #address-cells = <1>;
#interrupt-cells = <2>;
interrupt-controller;
interrupt-parent = <&gpio1>;
interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
pinctrl-0 = <&switch_interrupt_pins>;
pinctrl-names = "default";
- #size-cells = <0>;
reg = <0>;
mdio {
diff --git a/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-l8.dts b/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-l8.dts
index 1990f7d0cc79..1be0419f8f3e 100644
--- a/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-l8.dts
+++ b/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-l8.dts
@@ -7,7 +7,7 @@ / {
};
&mdio {
- switch0: switch0@4 {
+ switch0: switch@4 {
compatible = "marvell,mv88e6190";
reg = <4>;
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-s4.dts b/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-s4.dts
index b795ad573891..6ec536222bfb 100644
--- a/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-s4.dts
+++ b/arch/arm/boot/dts/marvell/armada-385-clearfog-gtr-s4.dts
@@ -11,7 +11,7 @@ &sfp0 {
};
&mdio {
- switch0: switch0@4 {
+ switch0: switch@4 {
compatible = "marvell,mv88e6085";
reg = <4>;
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/marvell/armada-385-linksys.dtsi b/arch/arm/boot/dts/marvell/armada-385-linksys.dtsi
index fc8216fd9f60..63a0bc9455ca 100644
--- a/arch/arm/boot/dts/marvell/armada-385-linksys.dtsi
+++ b/arch/arm/boot/dts/marvell/armada-385-linksys.dtsi
@@ -160,8 +160,6 @@ &mdio {
switch@0 {
compatible = "marvell,mv88e6085";
- #address-cells = <1>;
- #size-cells = <0>;
reg = <0>;
ports {
diff --git a/arch/arm/boot/dts/marvell/armada-388-clearfog.dts b/arch/arm/boot/dts/marvell/armada-388-clearfog.dts
index 32c569df142f..ab46903580aa 100644
--- a/arch/arm/boot/dts/marvell/armada-388-clearfog.dts
+++ b/arch/arm/boot/dts/marvell/armada-388-clearfog.dts
@@ -94,8 +94,6 @@ &mdio {
switch@4 {
compatible = "marvell,mv88e6085";
- #address-cells = <1>;
- #size-cells = <0>;
reg = <4>;
pinctrl-0 = <&clearfog_dsa0_clk_pins &clearfog_dsa0_pins>;
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/marvell/armada-xp-linksys-mamba.dts b/arch/arm/boot/dts/marvell/armada-xp-linksys-mamba.dts
index 7a0614fd0c93..2a5518c73bff 100644
--- a/arch/arm/boot/dts/marvell/armada-xp-linksys-mamba.dts
+++ b/arch/arm/boot/dts/marvell/armada-xp-linksys-mamba.dts
@@ -267,8 +267,6 @@ &mdio {
switch@0 {
compatible = "marvell,mv88e6085";
- #address-cells = <1>;
- #size-cells = <0>;
reg = <0>;
ports {
--
2.41.0
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH 2/3] RFC: dt-bindings: marvell: Rewrite in schema
2023-10-12 22:35 [PATCH 0/3] Create a binding for the Marvell MV88E6xxx DSA switches Linus Walleij
2023-10-12 22:35 ` [PATCH 1/3] ARM: dts: marvell: Fix some common switch mistakes Linus Walleij
@ 2023-10-12 22:35 ` Linus Walleij
2023-10-12 23:26 ` Rob Herring
2023-10-13 12:43 ` Andrew Lunn
2023-10-12 22:35 ` [PATCH 3/3] RFC: net: dsa: mv88e6xxx: Register mdio-external Linus Walleij
2 siblings, 2 replies; 11+ messages in thread
From: Linus Walleij @ 2023-10-12 22:35 UTC (permalink / raw)
To: Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Russell King, Florian Fainelli,
Vladimir Oltean, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni
Cc: Christian Marangi, linux-arm-kernel, devicetree, linux-kernel,
netdev, Linus Walleij
This is an attempt to rewrite the Marvell MV88E6xxx switch bindings
in YAML schema.
The current text binding says:
WARNING: This binding is currently unstable. Do not program it into a
FLASH never to be changed again. Once this binding is stable, this
warning will be removed.
Well that never happened before we switched to YAML markup,
we can't have it like this, what about fixing the mess?
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
.../bindings/net/dsa/marvell,mv88e6xxx.yaml | 249 +++++++++++++++++++++
.../devicetree/bindings/net/dsa/marvell.txt | 109 ---------
MAINTAINERS | 2 +-
3 files changed, 250 insertions(+), 110 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml b/Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml
new file mode 100644
index 000000000000..8ff94e8b89da
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml
@@ -0,0 +1,249 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/dsa/marvell,mv88e6xxx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell MV88E6xxx switch family
+
+maintainers:
+ - Andrew Lunn <andrew@lunn.ch>
+
+description:
+ The Marvell MV88E6xxx switch series has been produced and sold
+ by Marvell since at least 2010. The switch has a few compatibles which
+ just indicate the base address of the switch, then operating systems
+ can investigate switch ID registers to find out which actual version
+ of the switch it is dealing with.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - marvell,mv88e6060
+ - marvell,mv88e6085
+ - marvell,mv88e6190
+ - marvell,mv88e6250
+ description: |
+ marvell,mv88e6060: The oldest Marvell switch supported (singular version)
+ marvell,mv88e6085: This switch uses base address 0x10.
+ This switch and its siblings will be autodetected from
+ ID registers found in the switch, so only "marvell,mv88e6085" should be
+ specified. This includes the following list of MV88Exxxx switches:
+ 6085, 6095, 6097, 6123, 6131, 6141, 6161, 6165, 6171, 6172, 6175, 6176,
+ 6185, 6240, 6320, 6321, 6341, 6350, 6351, 6352
+ marvell,mv88e6190: This switch uses base address 0x00.
+ This switch and its siblings will be autodetected from
+ ID registers found in the switch, so only "marvell,mv88e6190" should be
+ specified. This includes the following list of MV88Exxxx switches:
+ 6190, 6190X, 6191, 6290, 6361, 6390, 6390X
+ marvell,mv88e6250: This switch uses base address 0x08 or 0x18.
+ This switch and its siblings will be autodetected from
+ ID registers found in the switch, so only "marvell,mv88e6250" should be
+ specified. This includes the following list of MV88Exxxx switches:
+ 6220, 6250
+ reg:
+ maxItems: 1
+
+ eeprom-length:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Set to the length of an EEPROM connected to the switch. Must be
+ set if the switch can not detect the presence and/or size of a connected
+ EEPROM, otherwise optional.
+
+ reset-gpios:
+ description:
+ GPIO to be used to reset the whole device
+ maxItems: 1
+
+ interrupts:
+ description: The switch provides an external interrupt line, but it is
+ not always used by target systems.
+ maxItems: 1
+
+ interrupt-controller:
+ description: The switch has an internal interrupt controller used by
+ the different sub-blocks.
+
+ '#interrupt-cells':
+ description: The internal interrupt controller only supports triggering
+ on IRQ_TYPE_LEVEL_HIGH
+ # FIXME: what is this? this should be one cell should it not?
+ # the Linux mv88e6xxx driver does not implement .irq_set_type in its irq_chip
+ # so at least in that implementation the type is flat out ignored.
+ const: 2
+
+ mdio:
+ $ref: /schemas/net/mdio.yaml#
+ unevaluatedProperties: false
+ description: Marvell MV88E6xxx switches have an internal mdio bus to
+ access switch ports, which is handled in this node.
+
+ mdio-external:
+ $ref: /schemas/net/mdio.yaml#
+ unevaluatedProperties: false
+ description: Marvell MV88E6xxx switches have an external mdio bus to
+ access switch ports.
+
+ mdio1:
+ $ref: /schemas/net/mdio.yaml#
+ unevaluatedProperties: false
+ description: Older version of mdio-external
+ deprecated: true
+ properties:
+ compatible:
+ const: marvell,mv88e6xxx-mdio-external
+
+ required:
+ - compatible
+
+$ref: dsa.yaml#
+
+patternProperties:
+ "^(ethernet-)?ports$":
+ type: object
+ patternProperties:
+ "^(ethernet-)?port@[0-9a-f]+$":
+ type: object
+ description: Ethernet switch ports
+
+ $ref: dsa-port.yaml#
+
+ unevaluatedProperties: false
+
+oneOf:
+ - required:
+ - ports
+ - required:
+ - ethernet-ports
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch0: switch@0 {
+ compatible = "marvell,mv88e6085";
+ reg = <0>;
+ reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ };
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ };
+ port@2 {
+ reg = <2>;
+ label = "lan3";
+ };
+ port@3 {
+ reg = <3>;
+ label = "lan4";
+ };
+ port@4 {
+ reg = <4>;
+ label = "wan";
+ };
+
+ port@5 {
+ reg = <5>;
+ phy-mode = "sgmii";
+ ethernet = <ð2>;
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ };
+ };
+ };
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ switch0phy0: switch0phy@0 {
+ reg = <0>;
+ interrupt-parent = <&switch0>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+ };
+ };
+
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch1: switch@0 {
+ compatible = "marvell,mv88e6190";
+ reg = <0>;
+ reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ };
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ };
+ port@2 {
+ reg = <2>;
+ label = "lan3";
+ };
+ port@3 {
+ reg = <3>;
+ label = "lan4";
+ };
+ };
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ switch1phy0: switch1phy@0 {
+ reg = <0>;
+ interrupt-parent = <&switch1>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+
+ mdio-external {
+ compatible = "marvell,mv88e6xxx-mdio-external";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ switch1phy9: switch1phy@9 {
+ reg = <9>;
+ };
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/net/dsa/marvell.txt b/Documentation/devicetree/bindings/net/dsa/marvell.txt
deleted file mode 100644
index 6ec0c181b6db..000000000000
--- a/Documentation/devicetree/bindings/net/dsa/marvell.txt
+++ /dev/null
@@ -1,109 +0,0 @@
-Marvell DSA Switch Device Tree Bindings
----------------------------------------
-
-WARNING: This binding is currently unstable. Do not program it into a
-FLASH never to be changed again. Once this binding is stable, this
-warning will be removed.
-
-If you need a stable binding, use the old dsa.txt binding.
-
-Marvell Switches are MDIO devices. The following properties should be
-placed as a child node of an mdio device.
-
-The properties described here are those specific to Marvell devices.
-Additional required and optional properties can be found in dsa.txt.
-
-The compatibility string is used only to find an identification register,
-which is at a different MDIO base address in different switch families.
-- "marvell,mv88e6085" : Switch has base address 0x10. Use with models:
- 6085, 6095, 6097, 6123, 6131, 6141, 6161, 6165,
- 6171, 6172, 6175, 6176, 6185, 6240, 6320, 6321,
- 6341, 6350, 6351, 6352
-- "marvell,mv88e6190" : Switch has base address 0x00. Use with models:
- 6190, 6190X, 6191, 6290, 6361, 6390, 6390X
-- "marvell,mv88e6250" : Switch has base address 0x08 or 0x18. Use with model:
- 6220, 6250
-
-Required properties:
-- compatible : Should be one of "marvell,mv88e6085",
- "marvell,mv88e6190" or "marvell,mv88e6250" as
- indicated above
-- reg : Address on the MII bus for the switch.
-
-Optional properties:
-
-- reset-gpios : Should be a gpio specifier for a reset line
-- interrupts : Interrupt from the switch
-- interrupt-controller : Indicates the switch is itself an interrupt
- controller. This is used for the PHY interrupts.
-#interrupt-cells = <2> : Controller uses two cells, number and flag
-- eeprom-length : Set to the length of an EEPROM connected to the
- switch. Must be set if the switch can not detect
- the presence and/or size of a connected EEPROM,
- otherwise optional.
-- mdio : Container of PHY and devices on the switches MDIO
- bus.
-- mdio? : Container of PHYs and devices on the external MDIO
- bus. The node must contains a compatible string of
- "marvell,mv88e6xxx-mdio-external"
-
-Example:
-
- mdio {
- #address-cells = <1>;
- #size-cells = <0>;
- interrupt-parent = <&gpio0>;
- interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
- interrupt-controller;
- #interrupt-cells = <2>;
-
- switch0: switch@0 {
- compatible = "marvell,mv88e6085";
- reg = <0>;
- reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
-
- mdio {
- #address-cells = <1>;
- #size-cells = <0>;
- switch1phy0: switch1phy0@0 {
- reg = <0>;
- interrupt-parent = <&switch0>;
- interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
- };
- };
- };
- };
-
- mdio {
- #address-cells = <1>;
- #size-cells = <0>;
- interrupt-parent = <&gpio0>;
- interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
- interrupt-controller;
- #interrupt-cells = <2>;
-
- switch0: switch@0 {
- compatible = "marvell,mv88e6190";
- reg = <0>;
- reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
-
- mdio {
- #address-cells = <1>;
- #size-cells = <0>;
- switch1phy0: switch1phy0@0 {
- reg = <0>;
- interrupt-parent = <&switch0>;
- interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
- };
- };
-
- mdio1 {
- compatible = "marvell,mv88e6xxx-mdio-external";
- #address-cells = <1>;
- #size-cells = <0>;
- switch1phy9: switch1phy0@9 {
- reg = <9>;
- };
- };
- };
- };
diff --git a/MAINTAINERS b/MAINTAINERS
index 90f13281d297..1b4475254d27 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12625,7 +12625,7 @@ MARVELL 88E6XXX ETHERNET SWITCH FABRIC DRIVER
M: Andrew Lunn <andrew@lunn.ch>
L: netdev@vger.kernel.org
S: Maintained
-F: Documentation/devicetree/bindings/net/dsa/marvell.txt
+F: Documentation/devicetree/bindings/net/dsa/marvell,mv88e6xxx.yaml
F: Documentation/networking/devlink/mv88e6xxx.rst
F: drivers/net/dsa/mv88e6xxx/
F: include/linux/dsa/mv88e6xxx.h
--
2.41.0
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH 3/3] RFC: net: dsa: mv88e6xxx: Register mdio-external
2023-10-12 22:35 [PATCH 0/3] Create a binding for the Marvell MV88E6xxx DSA switches Linus Walleij
2023-10-12 22:35 ` [PATCH 1/3] ARM: dts: marvell: Fix some common switch mistakes Linus Walleij
2023-10-12 22:35 ` [PATCH 2/3] RFC: dt-bindings: marvell: Rewrite in schema Linus Walleij
@ 2023-10-12 22:35 ` Linus Walleij
2023-10-13 12:45 ` Andrew Lunn
2023-10-13 14:15 ` Rob Herring
2 siblings, 2 replies; 11+ messages in thread
From: Linus Walleij @ 2023-10-12 22:35 UTC (permalink / raw)
To: Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Russell King, Florian Fainelli,
Vladimir Oltean, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni
Cc: Christian Marangi, linux-arm-kernel, devicetree, linux-kernel,
netdev, Linus Walleij
Make it legal to have a subnode just named "mdio-external"
and have that be recognized immediately as the external
MDIO bus, register it and return. Only fallback to the
old method with a compatible in the external bus node
if this doesn't work.
This is the result of deprecating the old DT method
of providing a node "mdio1" with a compatible string.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/net/dsa/mv88e6xxx/chip.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 52a99d8bada0..05f6776885f6 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3676,7 +3676,21 @@ static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip)
if (err)
return err;
- /* Walk the device tree, and see if there are any other nodes
+ /* If the optional external bus is explicitly named as such,
+ * just register it and be done with this.
+ */
+ child = of_get_child_by_name(np, "mdio-external");
+ if (child) {
+ err = mv88e6xxx_mdio_register(chip, child, true);
+ of_node_put(child);
+ if (err)
+ return err;
+ return 0;
+ }
+
+ /* Deprecated binding with compatible:
+ *
+ * Walk the device tree, and see if there are any other nodes
* which say they are compatible with the external mdio
* bus.
*/
--
2.41.0
^ permalink raw reply related [flat|nested] 11+ messages in thread