Re: [PATCH v2 1/5] dt-bindings: pci: Add ARTPEC-8 PCIe controller

[Wangseok Lee <wangseok.lee@samsung.com>]

On 06/06/2022 19:12, Krzysztof Kozlowski wrote:
> On 03/06/2022 04:23, Wangseok Lee wrote:
>> Add description to support Axis, ARTPEC-8 SoC.
>> ARTPEC-8 is the SoC platform of Axis Communications
>> and PCIe controller is designed based on Design-Ware PCIe controller.
>> 
>> changes since v1 :
> 
> Changelog goes after --- .
> 
 
Ok, i check the linux commit style.
I will fix it.
 
>> -'make dt_binding_check' result improvement
>> -Add the missing property list
>> -Align the indentation of continued lines/entries
>> 
>> Signed-off-by: Wangseok Lee <wangseok.lee@samsung.com>
>> ---
>>  .../bindings/pci/axis,artpec8-pcie-ep.yaml         | 108 ++++++++++++++++++
>>  .../devicetree/bindings/pci/axis,artpec8-pcie.yaml | 123 +++++++++++++++++++++
>>  2 files changed, 231 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/pci/axis,artpec8-pcie-ep.yaml
>>  create mode 100644 Documentation/devicetree/bindings/pci/axis,artpec8-pcie.yaml
>> 
>> diff --git a/Documentation/devicetree/bindings/pci/axis,artpec8-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/axis,artpec8-pcie-ep.yaml
>> new file mode 100644
>> index 0000000..3512e38
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pci/axis,artpec8-pcie-ep.yaml
>> @@ -0,0 +1,108 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: https://protect2.fireeye.com/v1/url?k=6948615e-08c37447-6949ea11-74fe485cbfec-fea93affd4665d88&q=1&e=501044d4-19cb-42be-bca2-b59852a39c26&u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fpci%2Faxis%2Cartpec8-pcie-ep.yaml%23
>> +$schema: https://protect2.fireeye.com/v1/url?k=629fe254-0314f74d-629e691b-74fe485cbfec-f3d83f3fca174eef&q=1&e=501044d4-19cb-42be-bca2-b59852a39c26&u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
>> +
>> +title: ARTPEC-8 SoC PCIe Controller Device Tree Bindings
> 
> s/Device Tree Bindings//
>
 
I will remove it.
 
>> +
>> +maintainers:
>> +  - Jesper Nilsson <jesper.nilsson@axis.com>
>> +
>> +description: |+
>> +  This PCIe end-point controller is based on the Synopsys DesignWare PCIe IP
>> +  and thus inherits all the common properties defined in snps,dw-pcie-ep.yaml.
>> +
>> +allOf:
>> +  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: axis,artpec8-pcie-ep
>> +
>> +  reg:
>> +    items:
>> +      - description: Data Bus Interface (DBI) registers.
>> +      - description: Data Bus Interface (DBI2) registers.
>> +      - description: PCIe address space region.
>> +
>> +  reg-names:
>> +    items:
>> +      - const: dbi
>> +      - const: dbi2
>> +      - const: addr_space
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  interrupts-names:
>> +    items:
>> +      - const: intr
> 
> Remove the interrupts-names entirely, no need for single item with
> generic name.
> 
> 
 
I will remove it.
 
>> +
>> +  clocks:
> +    items:
>> +      - description: PIPE clock, used by the controller to clock the PIPE
>> +      - description: PCIe dbi clock, ungated version
>> +      - description: PCIe master clock, ungated version
>> +      - description: PCIe slave clock, ungated version
>> +
>> +  clock-names:
>> +    items:
>> +      - const: pipe_clk
>> +      - const: dbi_clk
>> +      - const: mstr_clk
>> +      - const: slv_clk
>  
> Remove "_clk" suffix from all entries.
> 
 
Ok.
 
>> +
>> +  phys:
>> +    maxItems: 1
>> +
>> +  phy-names:
>> +    items:
>> +      - const: pcie_phy
> 
> Remove the phy-names entirely, no need for single item with generic name.
> 
 
Ok.
 
>> +
>> +  num-lanes:
>> +    const: 2
>> +
>> +required:
> 
> My comment was not applied here, so please fix it.
>  
> 
 
Ok, i miss compatible..
 
>> +  - reg
>> +  - reg-names
>> +  - interrupts
>> +  - interrupt-names
>> +  - clocks
>> +  - clock-names
>> +  - phys
>> +  - num-lanes
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/irq.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +    artpec8 {
> 
> Generic nodes please. Did you see "artpec8" or something like this in
> any DTS?
> 
 
Ok, i will modify to 'soc'.
 
>> +        #address-cells = <2>;
>> +        #size-cells = <2>;
>> +        pcie_ep: pcie-ep@17200000 {
>> +            compatible = "axis,artpec8-pcie-ep";
>> +            reg = <0x0 0x17200000 0x0 0x1000>,
>> +                  <0x0 0x17201000 0x0 0x1000>,
>> +                  <0x2 0x00000000 0x6 0x00000000>;
>> +            reg-names = "dbi", "dbi2", "addr_space";
>> +            #interrupt-cells = <1>;
>> +            interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
>> +            interrupt-names = "intr";
>> +            clocks = <&clock_cmu_fsys 39>,
>> +                     <&clock_cmu_fsys 38>,
>> +                     <&clock_cmu_fsys 37>,
>> +                     <&clock_cmu_fsys 36>;
>> +            clock-names = "pipe_clk", "dbi_clk", "mstr_clk", "slv_clk";
>> +            phys = <&pcie_phy>;
>> +            phy-names = "pcie_phy";
>> +            num-lanes = <2>;
>> +            bus-range = <0x00 0xff>;
>> +            num-ib-windows = <16>;
>> +            num-ob-windows = <16>;
>> +        };
>> +    };
> 
> 
>> +...
>> diff --git a/Documentation/devicetree/bindings/pci/axis,artpec8-pcie.yaml b/Documentation/devicetree/bindings/pci/axis,artpec8-pcie.yaml
>> new file mode 100644
>> index 0000000..945a061
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pci/axis,artpec8-pcie.yaml
>> @@ -0,0 +1,123 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: https://protect2.fireeye.com/v1/url?k=1de15b04-7c6a4e1d-1de0d04b-74fe485cbfec-aaaa8e4e3891e6f9&q=1&e=501044d4-19cb-42be-bca2-b59852a39c26&u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fpci%2Faxis%2Cartpec8-pcie.yaml%23
>> +$schema: https://protect2.fireeye.com/v1/url?k=66c233a3-074926ba-66c3b8ec-74fe485cbfec-9eadff8200c7df97&q=1&e=501044d4-19cb-42be-bca2-b59852a39c26&u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
>> +
>> +title: Artpec-8 SoC PCIe Controller Device Tree Bindings
> 
> Ditto
> 
 
Ok.
 
>> +
>> +maintainers:
>> +  - Jesper Nilsson <jesper.nilsson@axis.com>
>> +
>> +description: |+
>> +  This PCIe host controller is based on the Synopsys DesignWare PCIe IP
>> +  and thus inherits all the common properties defined in snps,dw-pcie.yaml.
>> +
>> +allOf:
>> +  - $ref: /schemas/pci/snps,dw-pcie.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: axis,artpec8-pcie
>> +
>> +  reg:
>> +    items:
>> +      - description: Data Bus Interface (DBI) registers.
>> +      - description: External Local Bus interface (ELBI) registers.
>> +      - description: PCIe configuration space region.
>> +
>> +  reg-names:
>> +    items:
>> +      - const: dbi
>> +      - const: elbi
>> +      - const: config
>> +
>> +  device_type:
>> +    items:
> 
> It's not a list, but just a string. No need for items.
> 
 
Ok.
 
>> +      - const: pci
>> +
>> +  ranges:
>> +    maxItems: 2
>> +
>> +  num-lanes:
>> +    const: 2
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  interrupts-names:
>> +    items:
>> +      - const: intr
> 
> Remove entire property.
> 
 
Ok.
 
>> +
>> +  clocks:
>> +    items:
>> +      - description: PIPE clock, used by the controller to clock the PIPE
>> +      - description: PCIe dbi clock, ungated version
>> +      - description: PCIe master clock,  ungated version
>> +      - description: PCIe slave clock, ungated version
>> +
>> +  clock-names:
>> +    items:
>> +      - const: pipe_clk
>> +      - const: dbi_clk
>> +      - const: mstr_clk
>> +      - const: slv_clk
> 
> Remove suffix.
> 

Ok.

>> +
>> +  phys:
>> +    maxItems: 1
>> +
>> +  phy-names:
>> +    items:
>> +      - const: pcie_phy
> 
> Remove entire property.
> 
 
Ok.
 
>> +
>> +required:
> 
> Previous comment not applied.
> 
 
Ok.
 
>> +  - reg
>> +  - reg-names
>> +  - device_type
>> +  - ranges
>> +  - num-lanes
>> +  - interrupts
>> +  - interrupt-names
>> +  - clocks
>> +  - clock-names
>> +  - phys
>> +  - phy-names
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/irq.h>
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +    artpec8 {
> 
> Same as previous patch.
> 
 
I will modify to 'soc'.
 
>> +        #address-cells = <2>;
>> +        #size-cells = <2>;
>> +        pcie: pcie@17200000 {
>> +            compatible = "axis,artpec8-pcie";
>> +            reg = <0x0 0x17200000 0x0 0x1000>,
>> +                  <0x0 0x16ca0000 0x0 0x2000>,
>> +                  <0x7 0x0001e000 0x0 0x2000>;
>> +            reg-names = "dbi", "elbi", "config";
>> +            #address-cells = <3>;
>> +            #size-cells = <2>;
>> +            device_type = "pci";
>> +            ranges = </* non-prefetchable memory */
>> +                      0x83000000 0x0 0x0000000 0x2 0x00000000 0x5 0x00000000
>> +                      /* downstream I/O */
>> +                      0x81000000 0x0 0x0000000 0x7 0x00000000 0x0 0x00010000>;
>> +            num-lanes = <2>;
>> +            bus-range = <0x00 0xff>;
>> +            interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
>> +            interrupt-names = "intr";
>> +            #interrupt-cells = <1>;
>> +            clocks = <&cmu_fsys 39>,
>> +                     <&cmu_fsys 38>,
>> +                     <&cmu_fsys 37>,
>> +                     <&cmu_fsys 36>;
>> +            clock-names = "pipe_clk", "dbi_clk", "mstr_clk", "slv_clk";
>> +            phys = <&pcie_phy>;
>> +            phy-names = "pcie_phy";
>> +        };
>> +    };
>> +...
> 
> 
> Best regards,
> Krzysztof

Thank you for kindness reivew.

Best regards,
Wangseok Lee