summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/phy/phy-cadence-sierra.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/phy/phy-cadence-sierra.yaml')
-rw-r--r--Documentation/devicetree/bindings/phy/phy-cadence-sierra.yaml152
1 files changed, 152 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-sierra.yaml b/Documentation/devicetree/bindings/phy/phy-cadence-sierra.yaml
new file mode 100644
index 000000000000..d210843863df
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-cadence-sierra.yaml
@@ -0,0 +1,152 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/phy/phy-cadence-sierra.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Cadence Sierra PHY binding
+
+description:
+ This binding describes the Cadence Sierra PHY. Sierra PHY supports multilink
+ multiprotocol combinations including protocols such as PCIe, USB etc.
+
+maintainers:
+ - Swapnil Jakhade <sjakhade@cadence.com>
+ - Yuti Amonkar <yamonkar@cadence.com>
+
+properties:
+ compatible:
+ enum:
+ - cdns,sierra-phy-t0
+ - ti,sierra-phy-t0
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ resets:
+ minItems: 1
+ maxItems: 2
+ items:
+ - description: Sierra PHY reset.
+ - description: Sierra APB reset. This is optional.
+
+ reset-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ - const: sierra_reset
+ - const: sierra_apb
+
+ reg:
+ maxItems: 1
+ description:
+ Offset of the Sierra PHY configuration registers.
+
+ reg-names:
+ const: serdes
+
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: cmn_refclk_dig_div
+ - const: cmn_refclk1_dig_div
+
+ cdns,autoconf:
+ type: boolean
+ description:
+ A boolean property whose presence indicates that the PHY registers will be
+ configured by hardware. If not present, all sub-node optional properties
+ must be provided.
+
+patternProperties:
+ '^phy@[0-9a-f]$':
+ type: object
+ description:
+ Each group of PHY lanes with a single master lane should be represented as
+ a sub-node. Note that the actual configuration of each lane is determined
+ by hardware strapping, and must match the configuration specified here.
+ properties:
+ reg:
+ description:
+ The master lane number. This is the lowest numbered lane in the lane group.
+ minimum: 0
+ maximum: 15
+
+ resets:
+ minItems: 1
+ maxItems: 4
+ description:
+ Contains list of resets, one per lane, to get all the link lanes out of reset.
+
+ "#phy-cells":
+ const: 0
+
+ cdns,phy-type:
+ description:
+ Specifies the type of PHY for which the group of PHY lanes is used.
+ Refer include/dt-bindings/phy/phy.h. Constants from the header should be used.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [2, 4]
+
+ cdns,num-lanes:
+ description:
+ Number of lanes in this group. The group is made up of consecutive lanes.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 1
+ maximum: 16
+
+ required:
+ - reg
+ - resets
+ - "#phy-cells"
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - "#address-cells"
+ - "#size-cells"
+ - reg
+ - resets
+ - reset-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/phy/phy.h>
+
+ bus {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ sierra-phy@fd240000 {
+ compatible = "cdns,sierra-phy-t0";
+ reg = <0x0 0xfd240000 0x0 0x40000>;
+ resets = <&phyrst 0>, <&phyrst 1>;
+ reset-names = "sierra_reset", "sierra_apb";
+ clocks = <&cmn_refclk_dig_div>, <&cmn_refclk1_dig_div>;
+ clock-names = "cmn_refclk_dig_div", "cmn_refclk1_dig_div";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pcie0_phy0: phy@0 {
+ reg = <0>;
+ resets = <&phyrst 2>;
+ cdns,num-lanes = <2>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_PCIE>;
+ };
+ pcie0_phy1: phy@2 {
+ reg = <2>;
+ resets = <&phyrst 4>;
+ cdns,num-lanes = <1>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_PCIE>;
+ };
+ };
+ };