Re: [PATCH v3 13/14] dt-bindings: phy: phy-cadence-torrent: Add subnode bindings.
From: Rob Herring <robh@kernel.org>
Date: 2020-01-27 16:42:40
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On Wed, Jan 22, 2020 at 11:45:17AM +0100, Yuti Amonkar wrote:
From: Swapnil Jakhade <redacted> Add sub-node bindings for each group of PHY lanes based on PHY type. Only PHY_TYPE_DP is supported currently. Each sub-node
What the driver supports is not relevant to the binding. Define all modes.
includes properties such as master lane number, link reset, phy type, number of lanes etc.
Given the conversion and this have no compatibility, just make the commits delete the old binding and add this new binding. I'd rather not have reviewed what just gets deleted here.
quoted hunk ↗ jump to hunk
Signed-off-by: Swapnil Jakhade <redacted> --- .../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
How many reset entries? Needs a 'maxItems: 1' or an 'items' list if more than 1.
- num_lanes:
+ reset-names:
description:
- Number of DisplayPort lanes.
- allOf:
- - $ref: /schemas/types.yaml#/definitions/uint32
- - enum: [1, 2, 4]
+ Must be "torrent_reset". It controls the reset to theShould be a schema, not freeform text. However, not really a useful name as there's only 1, so I'd just remove 'reset-names'.
+ torrent PHY.
- max_bit_rate:
+patternProperties:
+ '^torrent-phy@[0-7]+$':
+ 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.Why not make it the list of lane numbers. Then you don't need num-lanes.
+ + resets: + description: + Contains list of resets to get all the link lanes out of reset.
Needs a schema for how many? 1 per lane?
+ + "#phy-cells": + description: + Generic PHY binding.
Not a useful description. Remove.
+ const: 0 + + cdns,phy-type: + description: + Should be PHY_TYPE_DP.
Sounds like a constraint.
+ $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
Add (for the child nodes):
addtionalProperties: false
required:
- compatible
+ - "#address-cells"
+ - "#size-cells"
- clocks
- clock-names
- reg
- reg-names
- - "#phy-cells"
+ - resets
+ - reset-names
additionalProperties: false
examples:
- |
- dp_phy: phy@f0fb500000 {
+ #include <dt-bindings/phy/phy.h>
+ torrent_phy: phy@f0fb500000 {
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 {Just 'phy@...'
+ 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