[PATCH 0/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[PATCH 0/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[Yoshihiro Shimoda]

Convert bindings of rcar-pci.txt to json-schema. And, I realized
r8a77965 [1] and r8a774e1 [2] are not documented on rcar-pci.txt.
So, I made incremental patches to document them.

[1]
https://patchwork.kernel.org/project/linux-renesas-soc/patch/1528373494-18503-2-git-send-email-ykaneko0929@gmail.com/

This patch was old, so I didn't reuse this patch.

[2]
https://patchwork.kernel.org/project/linux-renesas-soc/patch/20200927124257.29612-1-prabhakar.mahadev-lad.rj@bp.renesas.com/

I reused this patch.


Lad Prabhakar (1):
  dt-bindings: pci: rcar-pci: Add device tree support for r8a774e1

Yoshihiro Shimoda (2):
  dt-bindings: pci: rcar-pci-host: convert bindings to json-schema
  dt-bindings: pci: rcar-pci-host: document r8a77965 bindings

 .../devicetree/bindings/pci/rcar-pci-host.yaml     | 148 +++++++++++++++++++++
 Documentation/devicetree/bindings/pci/rcar-pci.txt |  72 ----------
 2 files changed, 148 insertions(+), 72 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
 delete mode 100644 Documentation/devicetree/bindings/pci/rcar-pci.txt

-- 
2.7.4

[PATCH 1/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[Yoshihiro Shimoda]

Convert Renesas PCIe Host controller bindings documentation to
json-schema. Note that some compatible doesn't contain on
the original documantation so that incremental patches are required
for it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 .../devicetree/bindings/pci/rcar-pci-host.yaml     | 146 +++++++++++++++++++++
 Documentation/devicetree/bindings/pci/rcar-pci.txt |  72 ----------
 2 files changed, 146 insertions(+), 72 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
 delete mode 100644 Documentation/devicetree/bindings/pci/rcar-pci.txt

diff --git a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
new file mode 100644
index 0000000..d286454
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
@@ -0,0 +1,146 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 Renesas Electronics Corp.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/rcar-pci-host.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car PCIe Host
+
+maintainers:
+  - Marek Vasut <marek.vasut+renesas@gmail.com>
+  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+        - enum:
+            - renesas,pcie-r8a7742      # RZ/G1H
+            - renesas,pcie-r8a7743      # RZ/G1M
+            - renesas,pcie-r8a7744      # RZ/G1N
+            - renesas,pcie-r8a7790      # R-Car H2
+            - renesas,pcie-r8a7791      # R-Car M2-W
+            - renesas,pcie-r8a7793      # R-Car M2-N
+        - const: renesas,pcie-rcar-gen2 # R-Car Gen2 and RZ/G1
+      - items:
+        - enum:
+            - renesas,pcie-r8a774a1     # RZ/G2M
+            - renesas,pcie-r8a774b1     # RZ/G2N
+            - renesas,pcie-r8a774c0     # RZ/G2E
+            - renesas,pcie-r8a7795      # R-Car H3
+            - renesas,pcie-r8a7796      # R-Car M3-W
+            - renesas,pcie-r8a77961     # R-Car M3-W+
+            - renesas,pcie-r8a77980     # R-Car V3H
+            - renesas,pcie-r8a77990     # R-Car E3
+        - const: renesas,pcie-rcar-gen3 # R-Car Gen3 and RZ/G2
+
+  reg:
+    maxItems: 1
+
+  '#address-cells':
+    const: 3
+
+  '#size-cells':
+    const: 2
+
+  bus-range: true
+
+  device_type:
+    const: pci
+
+  ranges:
+    minItems: 4
+    maxItems: 4
+
+  dma-ranges:
+    minItems: 1
+    maxItems: 2
+
+  interrupts:
+    minItems: 3
+    maxItems: 3
+
+  '#interrupt-cells':
+    const: 1
+
+  interrupt-map-mask: true
+
+  interrupt-map: true
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: pcie
+      - const: pcie_bus
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    const: pcie
+
+required:
+  - compatible
+  - reg
+  - '#address-cells'
+  - '#size-cells'
+  - bus-range
+  - device_type
+  - ranges
+  - dma-ranges
+  - interrupts
+  - '#interrupt-cells'
+  - interrupt-map-mask
+  - interrupt-map
+  - clocks
+  - clock-names
+  - power-domains
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/r8a7791-sysc.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pcie: pcie@fe000000 {
+            compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2";
+            reg = <0 0xfe000000 0 0x80000>;
+             #address-cells = <3>;
+             #size-cells = <2>;
+             bus-range = <0x00 0xff>;
+             device_type = "pci";
+             ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000>,
+                      <0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000>,
+                      <0x02000000 0 0x30000000 0 0x30000000 0 0x08000000>,
+                      <0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>;
+             dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000>,
+                          <0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>;
+             interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
+                          <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
+                          <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
+             #interrupt-cells = <1>;
+             interrupt-map-mask = <0 0 0 0>;
+             interrupt-map = <0 0 0 0 &gic GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
+             clocks = <&cpg CPG_MOD 319>, <&pcie_bus_clk>;
+             clock-names = "pcie", "pcie_bus";
+             power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+             resets = <&cpg 319>;
+             status = "disabled";
+         };
+    };
diff --git a/Documentation/devicetree/bindings/pci/rcar-pci.txt b/Documentation/devicetree/bindings/pci/rcar-pci.txt
deleted file mode 100644
index 14d307d..0000000
--- a/Documentation/devicetree/bindings/pci/rcar-pci.txt
+++ /dev/null
@@ -1,72 +0,0 @@
-* Renesas R-Car PCIe interface
-
-Required properties:
-compatible: "renesas,pcie-r8a7742" for the R8A7742 SoC;
-	    "renesas,pcie-r8a7743" for the R8A7743 SoC;
-	    "renesas,pcie-r8a7744" for the R8A7744 SoC;
-	    "renesas,pcie-r8a774a1" for the R8A774A1 SoC;
-	    "renesas,pcie-r8a774b1" for the R8A774B1 SoC;
-	    "renesas,pcie-r8a774c0" for the R8A774C0 SoC;
-	    "renesas,pcie-r8a7779" for the R8A7779 SoC;
-	    "renesas,pcie-r8a7790" for the R8A7790 SoC;
-	    "renesas,pcie-r8a7791" for the R8A7791 SoC;
-	    "renesas,pcie-r8a7793" for the R8A7793 SoC;
-	    "renesas,pcie-r8a7795" for the R8A7795 SoC;
-	    "renesas,pcie-r8a7796" for the R8A77960 SoC;
-	    "renesas,pcie-r8a77961" for the R8A77961 SoC;
-	    "renesas,pcie-r8a77980" for the R8A77980 SoC;
-	    "renesas,pcie-r8a77990" for the R8A77990 SoC;
-	    "renesas,pcie-rcar-gen2" for a generic R-Car Gen2 or
-				     RZ/G1 compatible device.
-	    "renesas,pcie-rcar-gen3" for a generic R-Car Gen3 or
-				     RZ/G2 compatible device.
-
-	    When compatible with the generic version, nodes must list the
-	    SoC-specific version corresponding to the platform first
-	    followed by the generic version.
-
-- reg: base address and length of the PCIe controller registers.
-- #address-cells: set to <3>
-- #size-cells: set to <2>
-- bus-range: PCI bus numbers covered
-- device_type: set to "pci"
-- ranges: ranges for the PCI memory and I/O regions.
-- dma-ranges: ranges for the inbound memory regions.
-- interrupts: two interrupt sources for MSI interrupts, followed by interrupt
-	source for hardware related interrupts (e.g. link speed change).
-- #interrupt-cells: set to <1>
-- interrupt-map-mask and interrupt-map: standard PCI properties
-	to define the mapping of the PCIe interface to interrupt numbers.
-- clocks: from common clock binding: clock specifiers for the PCIe controller
-	and PCIe bus clocks.
-- clock-names: from common clock binding: should be "pcie" and "pcie_bus".
-
-Optional properties:
-- phys: from common PHY binding: PHY phandle and specifier (only make sense
-	for R-Car gen3 SoCs where the PCIe PHYs have their own register blocks).
-- phy-names: from common PHY binding: should be "pcie".
-
-Example:
-
-SoC-specific DT Entry:
-
-	pcie: pcie@fe000000 {
-		compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2";
-		reg = <0 0xfe000000 0 0x80000>;
-		#address-cells = <3>;
-		#size-cells = <2>;
-		bus-range = <0x00 0xff>;
-		device_type = "pci";
-		ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000
-			  0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000
-			  0x02000000 0 0x30000000 0 0x30000000 0 0x08000000
-			  0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>;
-		dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000
-			      0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>;
-		interrupts = <0 116 4>, <0 117 4>, <0 118 4>;
-		#interrupt-cells = <1>;
-		interrupt-map-mask = <0 0 0 0>;
-		interrupt-map = <0 0 0 0 &gic 0 116 4>;
-		clocks = <&mstp3_clks R8A7791_CLK_PCIE>, <&pcie_bus_clk>;
-		clock-names = "pcie", "pcie_bus";
-	};
-- 
2.7.4

Re: [PATCH 1/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[Rob Herring]

On Wed, 28 Oct 2020 11:05:49 +0900, Yoshihiro Shimoda wrote:
> Convert Renesas PCIe Host controller bindings documentation to
> json-schema. Note that some compatible doesn't contain on
> the original documantation so that incremental patches are required
> for it.
> 
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> ---
>  .../devicetree/bindings/pci/rcar-pci-host.yaml     | 146 +++++++++++++++++++++
>  Documentation/devicetree/bindings/pci/rcar-pci.txt |  72 ----------
>  2 files changed, 146 insertions(+), 72 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
>  delete mode 100644 Documentation/devicetree/bindings/pci/rcar-pci.txt
> 


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

yamllint warnings/errors:
./Documentation/devicetree/bindings/pci/rcar-pci-host.yaml:18:9: [warning] wrong indentation: expected 10 but found 8 (indentation)
./Documentation/devicetree/bindings/pci/rcar-pci-host.yaml:27:9: [warning] wrong indentation: expected 10 but found 8 (indentation)

dtschema/dtc warnings/errors:


See https://patchwork.ozlabs.org/patch/1389094

The base for the patch is generally the last rc1. Any dependencies
should be noted.

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

pip3 install dtschema --upgrade

Please check and re-submit.

RE: [PATCH 1/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[Yoshihiro Shimoda]

Hi Rob,

> From: Rob Herring, Sent: Wednesday, October 28, 2020 11:45 PM
> 
> On Wed, 28 Oct 2020 11:05:49 +0900, Yoshihiro Shimoda wrote:
> > Convert Renesas PCIe Host controller bindings documentation to
> > json-schema. Note that some compatible doesn't contain on
> > the original documantation so that incremental patches are required
> > for it.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> > ---
> >  .../devicetree/bindings/pci/rcar-pci-host.yaml     | 146 +++++++++++++++++++++
> >  Documentation/devicetree/bindings/pci/rcar-pci.txt |  72 ----------
> >  2 files changed, 146 insertions(+), 72 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> >  delete mode 100644 Documentation/devicetree/bindings/pci/rcar-pci.txt
> >
> 
> 
> My bot found errors running 'make dt_binding_check' on your patch:
> 
> yamllint warnings/errors:
> ./Documentation/devicetree/bindings/pci/rcar-pci-host.yaml:18:9: [warning] wrong indentation: expected 10 but found 8
> (indentation)
> ./Documentation/devicetree/bindings/pci/rcar-pci-host.yaml:27:9: [warning] wrong indentation: expected 10 but found 8
> (indentation)
> 
> dtschema/dtc warnings/errors:
> 
> 
> See
> https://patchwork.ozlabs.org/project/devicetree-bindings/patch/1603850751-32762-2-git-send-email-yoshihiro.shimoda.uh@renesas.com/
> 
> The base for the patch is generally the last rc1. Any dependencies
> should be noted.
> 
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
> 
> pip3 install dtschema --upgrade
> 
> Please check and re-submit.

Thank you for the information. I already ran 'make dt_binding_check',
but didn't install yamllint so I didn't see the errors.
I'll fix it.

Best regards,
Yoshihiro Shimoda

Re: [PATCH 1/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[Rob Herring]

On Wed, Oct 28, 2020 at 11:05:49AM +0900, Yoshihiro Shimoda wrote:
> Convert Renesas PCIe Host controller bindings documentation to
> json-schema. Note that some compatible doesn't contain on
> the original documantation so that incremental patches are required
> for it.
> 
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> ---
>  .../devicetree/bindings/pci/rcar-pci-host.yaml     | 146 +++++++++++++++++++++
>  Documentation/devicetree/bindings/pci/rcar-pci.txt |  72 ----------
>  2 files changed, 146 insertions(+), 72 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
>  delete mode 100644 Documentation/devicetree/bindings/pci/rcar-pci.txt
> 
> diff --git a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> new file mode 100644
> index 0000000..d286454
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> @@ -0,0 +1,146 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2020 Renesas Electronics Corp.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pci/rcar-pci-host.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas R-Car PCIe Host
> +
> +maintainers:
> +  - Marek Vasut <marek.vasut+renesas@gmail.com>
> +  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

allOf:
  - $ref: pci-bus.yaml#

> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +        - enum:
> +            - renesas,pcie-r8a7742      # RZ/G1H
> +            - renesas,pcie-r8a7743      # RZ/G1M
> +            - renesas,pcie-r8a7744      # RZ/G1N
> +            - renesas,pcie-r8a7790      # R-Car H2
> +            - renesas,pcie-r8a7791      # R-Car M2-W
> +            - renesas,pcie-r8a7793      # R-Car M2-N
> +        - const: renesas,pcie-rcar-gen2 # R-Car Gen2 and RZ/G1
> +      - items:
> +        - enum:
> +            - renesas,pcie-r8a774a1     # RZ/G2M
> +            - renesas,pcie-r8a774b1     # RZ/G2N
> +            - renesas,pcie-r8a774c0     # RZ/G2E
> +            - renesas,pcie-r8a7795      # R-Car H3
> +            - renesas,pcie-r8a7796      # R-Car M3-W
> +            - renesas,pcie-r8a77961     # R-Car M3-W+
> +            - renesas,pcie-r8a77980     # R-Car V3H
> +            - renesas,pcie-r8a77990     # R-Car E3
> +        - const: renesas,pcie-rcar-gen3 # R-Car Gen3 and RZ/G2
> +
> +  reg:
> +    maxItems: 1
> +

> +  '#address-cells':
> +    const: 3
> +
> +  '#size-cells':
> +    const: 2

No need to define these here as pci-bus.yaml does.

> +
> +  bus-range: true
> +
> +  device_type:
> +    const: pci

Same here.

> +
> +  ranges:
> +    minItems: 4
> +    maxItems: 4
> +
> +  dma-ranges:
> +    minItems: 1
> +    maxItems: 2
> +
> +  interrupts:
> +    minItems: 3
> +    maxItems: 3
> +
> +  '#interrupt-cells':
> +    const: 1

And this.

> +
> +  interrupt-map-mask: true
> +
> +  interrupt-map: true
> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: pcie
> +      - const: pcie_bus
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  phys:
> +    maxItems: 1
> +
> +  phy-names:
> +    const: pcie
> +
> +required:
> +  - compatible
> +  - reg

> +  - '#address-cells'
> +  - '#size-cells'

Already required by pci-bus.yaml

> +  - bus-range

This generally shouldn't be required if 0-255 is supported.

> +  - device_type
> +  - ranges

Both already required by pci-bus.yaml

> +  - dma-ranges
> +  - interrupts

> +  - '#interrupt-cells'
> +  - interrupt-map-mask
> +  - interrupt-map

And these.

> +  - clocks
> +  - clock-names
> +  - power-domains
> +  - resets
> +
> +additionalProperties: false

Use unevaluatedProperties instead.

> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/power/r8a7791-sysc.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        pcie: pcie@fe000000 {
> +            compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2";
> +            reg = <0 0xfe000000 0 0x80000>;
> +             #address-cells = <3>;
> +             #size-cells = <2>;
> +             bus-range = <0x00 0xff>;
> +             device_type = "pci";
> +             ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000>,
> +                      <0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000>,
> +                      <0x02000000 0 0x30000000 0 0x30000000 0 0x08000000>,
> +                      <0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>;
> +             dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000>,
> +                          <0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>;
> +             interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
> +                          <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
> +                          <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
> +             #interrupt-cells = <1>;
> +             interrupt-map-mask = <0 0 0 0>;
> +             interrupt-map = <0 0 0 0 &gic GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
> +             clocks = <&cpg CPG_MOD 319>, <&pcie_bus_clk>;
> +             clock-names = "pcie", "pcie_bus";
> +             power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
> +             resets = <&cpg 319>;
> +             status = "disabled";

Don't show status in examples.

> +         };
> +    };
> diff --git a/Documentation/devicetree/bindings/pci/rcar-pci.txt b/Documentation/devicetree/bindings/pci/rcar-pci.txt
> deleted file mode 100644
> index 14d307d..0000000
> --- a/Documentation/devicetree/bindings/pci/rcar-pci.txt
> +++ /dev/null
> @@ -1,72 +0,0 @@
> -* Renesas R-Car PCIe interface
> -
> -Required properties:
> -compatible: "renesas,pcie-r8a7742" for the R8A7742 SoC;
> -	    "renesas,pcie-r8a7743" for the R8A7743 SoC;
> -	    "renesas,pcie-r8a7744" for the R8A7744 SoC;
> -	    "renesas,pcie-r8a774a1" for the R8A774A1 SoC;
> -	    "renesas,pcie-r8a774b1" for the R8A774B1 SoC;
> -	    "renesas,pcie-r8a774c0" for the R8A774C0 SoC;
> -	    "renesas,pcie-r8a7779" for the R8A7779 SoC;
> -	    "renesas,pcie-r8a7790" for the R8A7790 SoC;
> -	    "renesas,pcie-r8a7791" for the R8A7791 SoC;
> -	    "renesas,pcie-r8a7793" for the R8A7793 SoC;
> -	    "renesas,pcie-r8a7795" for the R8A7795 SoC;
> -	    "renesas,pcie-r8a7796" for the R8A77960 SoC;
> -	    "renesas,pcie-r8a77961" for the R8A77961 SoC;
> -	    "renesas,pcie-r8a77980" for the R8A77980 SoC;
> -	    "renesas,pcie-r8a77990" for the R8A77990 SoC;
> -	    "renesas,pcie-rcar-gen2" for a generic R-Car Gen2 or
> -				     RZ/G1 compatible device.
> -	    "renesas,pcie-rcar-gen3" for a generic R-Car Gen3 or
> -				     RZ/G2 compatible device.
> -
> -	    When compatible with the generic version, nodes must list the
> -	    SoC-specific version corresponding to the platform first
> -	    followed by the generic version.
> -
> -- reg: base address and length of the PCIe controller registers.
> -- #address-cells: set to <3>
> -- #size-cells: set to <2>
> -- bus-range: PCI bus numbers covered
> -- device_type: set to "pci"
> -- ranges: ranges for the PCI memory and I/O regions.
> -- dma-ranges: ranges for the inbound memory regions.
> -- interrupts: two interrupt sources for MSI interrupts, followed by interrupt
> -	source for hardware related interrupts (e.g. link speed change).
> -- #interrupt-cells: set to <1>
> -- interrupt-map-mask and interrupt-map: standard PCI properties
> -	to define the mapping of the PCIe interface to interrupt numbers.
> -- clocks: from common clock binding: clock specifiers for the PCIe controller
> -	and PCIe bus clocks.
> -- clock-names: from common clock binding: should be "pcie" and "pcie_bus".
> -
> -Optional properties:
> -- phys: from common PHY binding: PHY phandle and specifier (only make sense
> -	for R-Car gen3 SoCs where the PCIe PHYs have their own register blocks).
> -- phy-names: from common PHY binding: should be "pcie".
> -
> -Example:
> -
> -SoC-specific DT Entry:
> -
> -	pcie: pcie@fe000000 {
> -		compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2";
> -		reg = <0 0xfe000000 0 0x80000>;
> -		#address-cells = <3>;
> -		#size-cells = <2>;
> -		bus-range = <0x00 0xff>;
> -		device_type = "pci";
> -		ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000
> -			  0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000
> -			  0x02000000 0 0x30000000 0 0x30000000 0 0x08000000
> -			  0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>;
> -		dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000
> -			      0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>;
> -		interrupts = <0 116 4>, <0 117 4>, <0 118 4>;
> -		#interrupt-cells = <1>;
> -		interrupt-map-mask = <0 0 0 0>;
> -		interrupt-map = <0 0 0 0 &gic 0 116 4>;
> -		clocks = <&mstp3_clks R8A7791_CLK_PCIE>, <&pcie_bus_clk>;
> -		clock-names = "pcie", "pcie_bus";
> -	};
> -- 
> 2.7.4
> 

RE: [PATCH 1/3] dt-bindings: pci: rcar-pci-host: convert bindings to json-schema

[Yoshihiro Shimoda]

Hi Rob,

Thank you for your review!

> From: Rob Herring, Sent: Wednesday, October 28, 2020 11:49 PM
> 
> On Wed, Oct 28, 2020 at 11:05:49AM +0900, Yoshihiro Shimoda wrote:
> > Convert Renesas PCIe Host controller bindings documentation to
> > json-schema. Note that some compatible doesn't contain on
> > the original documantation so that incremental patches are required
> > for it.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> > ---
> >  .../devicetree/bindings/pci/rcar-pci-host.yaml     | 146 +++++++++++++++++++++
> >  Documentation/devicetree/bindings/pci/rcar-pci.txt |  72 ----------
> >  2 files changed, 146 insertions(+), 72 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> >  delete mode 100644 Documentation/devicetree/bindings/pci/rcar-pci.txt
> >
> > diff --git a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> > new file mode 100644
> > index 0000000..d286454
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
> > @@ -0,0 +1,146 @@
<snip>
> > +maintainers:
> > +  - Marek Vasut <marek.vasut+renesas@gmail.com>
> > +  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> 
> allOf:
>   - $ref: pci-bus.yaml#

I got it.

<snip>
> > +  '#address-cells':
> > +    const: 3
> > +
> > +  '#size-cells':
> > +    const: 2
> 
> No need to define these here as pci-bus.yaml does.

I'll remove these.

> > +
> > +  bus-range: true
> > +
> > +  device_type:
> > +    const: pci
> 
> Same here.

I got it.

> > +
> > +  ranges:
> > +    minItems: 4
> > +    maxItems: 4
> > +
> > +  dma-ranges:
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  interrupts:
> > +    minItems: 3
> > +    maxItems: 3
> > +
> > +  '#interrupt-cells':
> > +    const: 1
> 
> And this.

I got it. I'll remove it.

> > +
> > +  interrupt-map-mask: true
> > +
> > +  interrupt-map: true
> > +
> > +  clocks:
> > +    maxItems: 2
> > +
> > +  clock-names:
> > +    items:
> > +      - const: pcie
> > +      - const: pcie_bus
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +  resets:
> > +    maxItems: 1
> > +
> > +  phys:
> > +    maxItems: 1
> > +
> > +  phy-names:
> > +    const: pcie
> > +
> > +required:
> > +  - compatible
> > +  - reg
> 
> > +  - '#address-cells'
> > +  - '#size-cells'
> 
> Already required by pci-bus.yaml

I'll remove it.

> > +  - bus-range
> 
> This generally shouldn't be required if 0-255 is supported.

I got it.

> > +  - device_type
> > +  - ranges
> 
> Both already required by pci-bus.yaml

I'll remove it.

> > +  - dma-ranges
> > +  - interrupts
> 
> > +  - '#interrupt-cells'
> > +  - interrupt-map-mask
> > +  - interrupt-map
> 
> And these.

I got it.

> > +  - clocks
> > +  - clock-names
> > +  - power-domains
> > +  - resets
> > +
> > +additionalProperties: false
> 
> Use unevaluatedProperties instead.

I'll fix it.

> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    #include <dt-bindings/power/r8a7791-sysc.h>
> > +
> > +    soc {
> > +        #address-cells = <2>;
> > +        #size-cells = <2>;
> > +
> > +        pcie: pcie@fe000000 {
> > +            compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2";
> > +            reg = <0 0xfe000000 0 0x80000>;
> > +             #address-cells = <3>;
> > +             #size-cells = <2>;
> > +             bus-range = <0x00 0xff>;
> > +             device_type = "pci";
> > +             ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000>,
> > +                      <0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000>,
> > +                      <0x02000000 0 0x30000000 0 0x30000000 0 0x08000000>,
> > +                      <0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>;
> > +             dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000>,
> > +                          <0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>;
> > +             interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
> > +                          <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
> > +                          <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
> > +             #interrupt-cells = <1>;
> > +             interrupt-map-mask = <0 0 0 0>;
> > +             interrupt-map = <0 0 0 0 &gic GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
> > +             clocks = <&cpg CPG_MOD 319>, <&pcie_bus_clk>;
> > +             clock-names = "pcie", "pcie_bus";
> > +             power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
> > +             resets = <&cpg 319>;
> > +             status = "disabled";
> 
> Don't show status in examples.

Oops. I'll remove it.

Best regards,
Yoshihiro Shimoda

[PATCH 2/3] dt-bindings: pci: rcar-pci-host: document r8a77965 bindings

[Yoshihiro Shimoda]

Document the R-Car M3-N (R8A77965) SoC in the R-Car PCIe bindings.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
index d286454..1c6a03b 100644
--- a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
+++ b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
@@ -31,6 +31,7 @@ properties:
             - renesas,pcie-r8a7795      # R-Car H3
             - renesas,pcie-r8a7796      # R-Car M3-W
             - renesas,pcie-r8a77961     # R-Car M3-W+
+            - renesas,pcie-r8a77965     # R-Car M3-N
             - renesas,pcie-r8a77980     # R-Car V3H
             - renesas,pcie-r8a77990     # R-Car E3
         - const: renesas,pcie-rcar-gen3 # R-Car Gen3 and RZ/G2
-- 
2.7.4

Re: [PATCH 2/3] dt-bindings: pci: rcar-pci-host: document r8a77965 bindings

[Geert Uytterhoeven]

On Wed, Oct 28, 2020 at 10:41 PM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> Document the R-Car M3-N (R8A77965) SoC in the R-Car PCIe bindings.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[PATCH 3/3] dt-bindings: pci: rcar-pci: Add device tree support for r8a774e1

[Yoshihiro Shimoda]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Add PCIe support for the RZ/G2H (a.k.a. R8A774E1).

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 Documentation/devicetree/bindings/pci/rcar-pci-host.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
index 1c6a03b..48dfec9 100644
--- a/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
+++ b/Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
@@ -28,6 +28,7 @@ properties:
             - renesas,pcie-r8a774a1     # RZ/G2M
             - renesas,pcie-r8a774b1     # RZ/G2N
             - renesas,pcie-r8a774c0     # RZ/G2E
+            - renesas,pcie-r8a774e1     # RZ/G2H
             - renesas,pcie-r8a7795      # R-Car H3
             - renesas,pcie-r8a7796      # R-Car M3-W
             - renesas,pcie-r8a77961     # R-Car M3-W+
-- 
2.7.4