[PATCH v9 1/3] dt-bindings: phy: Add DT bindings for Xilinx ZynqMP PSGTR PHY

[PATCH v9 1/3] dt-bindings: phy: Add DT bindings for Xilinx ZynqMP PSGTR PHY

[Laurent Pinchart]

From: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>

Add DT bindings for the Xilinx ZynqMP PHY. ZynqMP SoCs have a High Speed
Processing System Gigabit Transceiver which provides PHY capabilities to
USB, SATA, PCIE, Display Port and Ehernet SGMII controllers.

Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
Changes since v8:

- Rebase on phy/next

Changes since v7:

- Switch to GPL-2.0-only OR BSD-2-Clause

Changes since v6:

- Fixed specification of compatible-dependent xlnx,tx-termination-fix
  property
- Dropped status property from example
- Use 4 spaces to indent example

Changes since v5:

- Document clocks and clock-names properties
- Document resets and reset-names properties
- Replace subnodes with an additional entry in the PHY cells
- Drop lane frequency PHY cell, replaced by reference clock phandle
- Convert bindings to YAML
- Reword the subject line
- Drop Rob's R-b as the bindings have significantly changed
- Drop resets and reset-names properties
---
 .../bindings/phy/xlnx,zynqmp-psgtr.yaml       | 105 ++++++++++++++++++
 include/dt-bindings/phy/phy.h                 |   1 +
 2 files changed, 106 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml

diff --git a/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml b/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml
new file mode 100644
index 000000000000..09e3cde7ebca
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/xlnx,zynqmp-psgtr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx ZynqMP Gigabit Transceiver PHY Device Tree Bindings
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+description: |
+  This binding describes the Xilinx ZynqMP Gigabit Transceiver (GTR) PHY. The
+  GTR provides four lanes and is used by USB, SATA, PCIE, Display port and
+  Ethernet SGMII controllers.
+
+properties:
+  "#phy-cells":
+    const: 4
+    description: |
+      The cells contain the following arguments.
+
+      - description: The GTR lane
+        minimum: 0
+        maximum: 3
+      - description: The PHY type
+        enum:
+          - PHY_TYPE_DP
+          - PHY_TYPE_PCIE
+          - PHY_TYPE_SATA
+          - PHY_TYPE_SGMII
+          - PHY_TYPE_USB
+      - description: The PHY instance
+        minimum: 0
+        maximum: 1 # for DP, SATA or USB
+        maximum: 3 # for PCIE or SGMII
+      - description: The reference clock number
+        minimum: 0
+        maximum: 3
+
+  compatible:
+    enum:
+      - xlnx,zynqmp-psgtr-v1.1
+      - xlnx,zynqmp-psgtr
+
+  clocks:
+    minItems: 1
+    maxItems: 4
+    description: |
+      Clock for each PS_MGTREFCLK[0-3] reference clock input. Unconnected
+      inputs shall not have an entry.
+
+  clock-names:
+    minItems: 1
+    maxItems: 4
+    items:
+      pattern: "^ref[0-3]$"
+
+  reg:
+    items:
+      - description: SERDES registers block
+      - description: SIOU registers block
+
+  reg-names:
+    items:
+      - const: serdes
+      - const: siou
+
+  xlnx,tx-termination-fix:
+    description: |
+      Include this for fixing functional issue with the TX termination
+      resistance in GT, which can be out of spec for the XCZU9EG silicon
+      version.
+    type: boolean
+
+required:
+  - "#phy-cells"
+  - compatible
+  - reg
+  - reg-names
+
+if:
+  properties:
+    compatible:
+      const: xlnx,zynqmp-psgtr-v1.1
+
+then:
+  properties:
+    xlnx,tx-termination-fix: false
+
+additionalProperties: false
+
+examples:
+  - |
+    phy: phy@fd400000 {
+        compatible = "xlnx,zynqmp-psgtr-v1.1";
+        reg = <0x0 0xfd400000 0x0 0x40000>,
+              <0x0 0xfd3d0000 0x0 0x1000>;
+        reg-names = "serdes", "siou";
+        clocks = <&refclks 3>, <&refclks 2>, <&refclks 0>;
+        clock-names = "ref1", "ref2", "ref3";
+        #phy-cells = <4>;
+    };
+
+...
diff --git a/include/dt-bindings/phy/phy.h b/include/dt-bindings/phy/phy.h
index 3727ef72138b..36e8c241cf48 100644
--- a/include/dt-bindings/phy/phy.h
+++ b/include/dt-bindings/phy/phy.h
@@ -18,5 +18,6 @@
 #define PHY_TYPE_UFS		5
 #define PHY_TYPE_DP		6
 #define PHY_TYPE_XPCS		7
+#define PHY_TYPE_SGMII		8
 
 #endif /* _DT_BINDINGS_PHY */
-- 
Regards,

Laurent Pinchart

Re: [PATCH v9 1/3] dt-bindings: phy: Add DT bindings for Xilinx ZynqMP PSGTR PHY

[Rob Herring]

On Mon, 29 Jun 2020 15:00:52 +0300, Laurent Pinchart wrote:
> From: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
> 
> Add DT bindings for the Xilinx ZynqMP PHY. ZynqMP SoCs have a High Speed
> Processing System Gigabit Transceiver which provides PHY capabilities to
> USB, SATA, PCIE, Display Port and Ehernet SGMII controllers.
> 
> Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> Changes since v8:
> 
> - Rebase on phy/next
> 
> Changes since v7:
> 
> - Switch to GPL-2.0-only OR BSD-2-Clause
> 
> Changes since v6:
> 
> - Fixed specification of compatible-dependent xlnx,tx-termination-fix
>   property
> - Dropped status property from example
> - Use 4 spaces to indent example
> 
> Changes since v5:
> 
> - Document clocks and clock-names properties
> - Document resets and reset-names properties
> - Replace subnodes with an additional entry in the PHY cells
> - Drop lane frequency PHY cell, replaced by reference clock phandle
> - Convert bindings to YAML
> - Reword the subject line
> - Drop Rob's R-b as the bindings have significantly changed
> - Drop resets and reset-names properties
> ---
>  .../bindings/phy/xlnx,zynqmp-psgtr.yaml       | 105 ++++++++++++++++++
>  include/dt-bindings/phy/phy.h                 |   1 +
>  2 files changed, 106 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml
> 


My bot found errors running 'make dt_binding_check' on your patch:

/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.example.dt.yaml: example-0: phy@fd400000:reg:0: [0, 4248829952, 0, 262144] is too long
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.example.dt.yaml: example-0: phy@fd400000:reg:1: [0, 4248633344, 0, 4096] is too long


See https://patchwork.ozlabs.org/patch/1319269

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.

Re: [PATCH v9 1/3] dt-bindings: phy: Add DT bindings for Xilinx ZynqMP PSGTR PHY

[Laurent Pinchart]

Hi Rob,

On Mon, Jun 29, 2020 at 04:30:11PM -0600, Rob Herring wrote:
> On Mon, 29 Jun 2020 15:00:52 +0300, Laurent Pinchart wrote:
> > From: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
> > 
> > Add DT bindings for the Xilinx ZynqMP PHY. ZynqMP SoCs have a High Speed
> > Processing System Gigabit Transceiver which provides PHY capabilities to
> > USB, SATA, PCIE, Display Port and Ehernet SGMII controllers.
> > 
> > Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
> > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > Reviewed-by: Rob Herring <robh@kernel.org>
> > ---
> > Changes since v8:
> > 
> > - Rebase on phy/next
> > 
> > Changes since v7:
> > 
> > - Switch to GPL-2.0-only OR BSD-2-Clause
> > 
> > Changes since v6:
> > 
> > - Fixed specification of compatible-dependent xlnx,tx-termination-fix
> >   property
> > - Dropped status property from example
> > - Use 4 spaces to indent example
> > 
> > Changes since v5:
> > 
> > - Document clocks and clock-names properties
> > - Document resets and reset-names properties
> > - Replace subnodes with an additional entry in the PHY cells
> > - Drop lane frequency PHY cell, replaced by reference clock phandle
> > - Convert bindings to YAML
> > - Reword the subject line
> > - Drop Rob's R-b as the bindings have significantly changed
> > - Drop resets and reset-names properties
> > ---
> >  .../bindings/phy/xlnx,zynqmp-psgtr.yaml       | 105 ++++++++++++++++++
> >  include/dt-bindings/phy/phy.h                 |   1 +
> >  2 files changed, 106 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml
> > 
> 
> 
> My bot found errors running 'make dt_binding_check' on your patch:
> 
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.example.dt.yaml: example-0: phy@fd400000:reg:0: [0, 4248829952, 0, 262144] is too long
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.example.dt.yaml: example-0: phy@fd400000:reg:1: [0, 4248633344, 0, 4096] is too long
> 
> 
> See https://patchwork.ozlabs.org/patch/1319269
> 
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure dt-schema is up to date:
> 
> pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade
> 
> Please check and re-submit.

Sorry :-S I've updated the schema now. The patch has already been
merged, so I'll submit a fix.

-- 
Regards,

Laurent Pinchart

Re: [PATCH v9 1/3] dt-bindings: phy: Add DT bindings for Xilinx ZynqMP PSGTR PHY

[Rob Herring]

On Wed, Jul 1, 2020 at 7:33 AM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
>
> Hi Rob,
>
> On Mon, Jun 29, 2020 at 04:30:11PM -0600, Rob Herring wrote:
> > On Mon, 29 Jun 2020 15:00:52 +0300, Laurent Pinchart wrote:
> > > From: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
> > >
> > > Add DT bindings for the Xilinx ZynqMP PHY. ZynqMP SoCs have a High Speed
> > > Processing System Gigabit Transceiver which provides PHY capabilities to
> > > USB, SATA, PCIE, Display Port and Ehernet SGMII controllers.
> > >
> > > Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
> > > Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > > Reviewed-by: Rob Herring <robh@kernel.org>
> > > ---
> > > Changes since v8:
> > >
> > > - Rebase on phy/next
> > >
> > > Changes since v7:
> > >
> > > - Switch to GPL-2.0-only OR BSD-2-Clause
> > >
> > > Changes since v6:
> > >
> > > - Fixed specification of compatible-dependent xlnx,tx-termination-fix
> > >   property
> > > - Dropped status property from example
> > > - Use 4 spaces to indent example
> > >
> > > Changes since v5:
> > >
> > > - Document clocks and clock-names properties
> > > - Document resets and reset-names properties
> > > - Replace subnodes with an additional entry in the PHY cells
> > > - Drop lane frequency PHY cell, replaced by reference clock phandle
> > > - Convert bindings to YAML
> > > - Reword the subject line
> > > - Drop Rob's R-b as the bindings have significantly changed
> > > - Drop resets and reset-names properties
> > > ---
> > >  .../bindings/phy/xlnx,zynqmp-psgtr.yaml       | 105 ++++++++++++++++++
> > >  include/dt-bindings/phy/phy.h                 |   1 +
> > >  2 files changed, 106 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.yaml
> > >
> >
> >
> > My bot found errors running 'make dt_binding_check' on your patch:
> >
> > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.example.dt.yaml: example-0: phy@fd400000:reg:0: [0, 4248829952, 0, 262144] is too long
> > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/phy/xlnx,zynqmp-psgtr.example.dt.yaml: example-0: phy@fd400000:reg:1: [0, 4248633344, 0, 4096] is too long
> >
> >
> > See https://patchwork.ozlabs.org/patch/1319269
> >
> > If you already ran 'make dt_binding_check' and didn't see the above
> > error(s), then make sure dt-schema is up to date:
> >
> > pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade
> >
> > Please check and re-submit.
>
> Sorry :-S I've updated the schema now. The patch has already been
> merged, so I'll submit a fix.

No worries, it's a moving target. The check just got added to the schemas.

Rob