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Date: Wed, 22 Jan 2020 11:45:17 +0100
From: Yuti Amonkar <yamonkar@...ence.com>
To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<kishon@...com>, <robh+dt@...nel.org>, <mark.rutland@....com>,
<maxime@...no.tech>
CC: <jsarha@...com>, <tomi.valkeinen@...com>, <praneeth@...com>,
<mparab@...ence.com>, <sjakhade@...ence.com>,
<yamonkar@...ence.com>
Subject: [PATCH v3 13/14] dt-bindings: phy: phy-cadence-torrent: Add subnode bindings.
From: Swapnil Jakhade <sjakhade@...ence.com>
Add sub-node bindings for each group of PHY lanes based on PHY
type. Only PHY_TYPE_DP is supported currently. Each sub-node
includes properties such as master lane number, link reset, phy
type, number of lanes etc.
Signed-off-by: Swapnil Jakhade <sjakhade@...ence.com>
---
.../bindings/phy/phy-cadence-torrent.yaml | 90 ++++++++++++++++++----
1 file changed, 73 insertions(+), 17 deletions(-)
diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
index dbb8aa5..eb21615 100644
--- a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
+++ b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
@@ -19,6 +19,12 @@ properties:
- cdns,torrent-phy
- ti,j721e-serdes-10g
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
clocks:
maxItems: 1
description:
@@ -41,44 +47,94 @@ properties:
- const: torrent_phy
- const: dptx_phy
- "#phy-cells":
- const: 0
+ resets:
+ description:
+ Must contain an entry for each in reset-names.
+ See Documentation/devicetree/bindings/reset/reset.txt
- num_lanes:
+ reset-names:
description:
- Number of DisplayPort lanes.
- allOf:
- - $ref: /schemas/types.yaml#/definitions/uint32
- - enum: [1, 2, 4]
+ Must be "torrent_reset". It controls the reset to the
+ torrent PHY.
- max_bit_rate:
+patternProperties:
+ '^torrent-phy@[0-7]+$':
+ type: object
description:
- Maximum DisplayPort link bit rate to use, in Mbps
- allOf:
- - $ref: /schemas/types.yaml#/definitions/uint32
- - enum: [2160, 2430, 2700, 3240, 4320, 5400, 8100]
+ Each group of PHY lanes with a single master lane should be represented as a sub-node.
+ properties:
+ reg:
+ description:
+ The master lane number. This is the lowest numbered lane in the lane group.
+
+ resets:
+ description:
+ Contains list of resets to get all the link lanes out of reset.
+
+ "#phy-cells":
+ description:
+ Generic PHY binding.
+ const: 0
+
+ cdns,phy-type:
+ description:
+ Should be PHY_TYPE_DP.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ cdns,num-lanes:
+ description:
+ Number of DisplayPort lanes.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [1, 2, 4]
+
+ cdns,max-bit-rate:
+ description:
+ Maximum DisplayPort link bit rate to use, in Mbps
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [2160, 2430, 2700, 3240, 4320, 5400, 8100]
+
+ required:
+ - reg
+ - resets
+ - "#phy-cells"
+ - cdns,phy-type
required:
- compatible
+ - "#address-cells"
+ - "#size-cells"
- clocks
- clock-names
- reg
- reg-names
- - "#phy-cells"
+ - resets
+ - reset-names
additionalProperties: false
examples:
- |
- dp_phy: phy@...b500000 {
+ #include <dt-bindings/phy/phy.h>
+ torrent_phy: phy@...b500000 {
compatible = "cdns,torrent-phy";
reg = <0xf0 0xfb500000 0x0 0x00100000>,
<0xf0 0xfb030a00 0x0 0x00000040>;
reg-names = "torrent_phy", "dptx_phy";
- num_lanes = <4>;
- max_bit_rate = <8100>;
- #phy-cells = <0>;
+ resets = <&phyrst 0>;
+ reset-names = "torrent_reset";
clocks = <&ref_clk>;
clock-names = "refclk";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ torrent_phy_dp: torrent-phy@0 {
+ reg = <0>;
+ resets = <&phyrst 1>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_DP>;
+ cdns,num-lanes = <4>;
+ cdns,max-bit-rate = <8100>;
+ };
};
...
--
2.4.5
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