Re: [PATCH v5 1/2] dt-bindings: usb: qcom,dwc3: Convert USB DWC3 bindings

["Sandeep Maheswaram (Temp)" <sanm@codeaurora.org>]

Hi Rob,

Any suggestions to solve this error in assigned-clock-rates


Regards

Sandeep

On 4/6/2020 10:09 PM, Sandeep Maheswaram (Temp) wrote:
> Hi Rob,
>
> On 4/4/2020 10:47 PM, Rob Herring wrote:
>> On Thu, Mar 26, 2020 at 12:36:07PM +0530, Sandeep Maheswaram wrote:
>>> Convert USB DWC3 bindings to DT schema format using json-schema.
>>>
>>> Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
>>> ---
>>>   .../devicetree/bindings/usb/qcom,dwc3.txt          | 104 
>>> --------------
>>>   .../devicetree/bindings/usb/qcom,dwc3.yaml         | 158 
>>> +++++++++++++++++++++
>>>   2 files changed, 158 insertions(+), 104 deletions(-)
>>>   delete mode 100644 
>>> Documentation/devicetree/bindings/usb/qcom,dwc3.txt
>>>   create mode 100644 
>>> Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
>>
>>> diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml 
>>> b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
>>> new file mode 100644
>>> index 0000000..0f69475
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
>>> @@ -0,0 +1,158 @@
>>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>> +
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Qualcomm SuperSpeed DWC3 USB SoC controller
>>> +
>>> +maintainers:
>>> +  - Manu Gautam <mgautam@codeaurora.org>
>>> +
>>> +properties:
>>> +  compatible:
>>> +    items:
>>> +      - enum:
>>> +          - qcom,msm8996-dwc3
>>> +          - qcom,msm8998-dwc3
>>> +          - qcom,sdm845-dwc3
>>> +      - const: qcom,dwc3
>>> +
>>> +  reg:
>>> +    description: Offset and length of register set for QSCRATCH 
>>> wrapper
>>> +    maxItems: 1
>>> +
>>> +  "#address-cells":
>>> +    enum: [ 1, 2 ]
>>> +
>>> +  "#size-cells":
>>> +    enum: [ 1, 2 ]
>>> +
>>> +  power-domains:
>>> +    description: specifies a phandle to PM domain provider node
>>> +    maxItems: 1
>>> +
>>> +  clocks:
>>> +    description:
>>> +      A list of phandle and clock-specifier pairs for the clocks
>>> +      listed in clock-names.
>>> +    items:
>>> +      - description: System Config NOC clock.
>>> +      - description: Master/Core clock, has to be >= 125 MHz
>>> +          for SS operation and >= 60MHz for HS operation.
>>> +      - description: System bus AXI clock.
>>> +      - description: Mock utmi clock needed for ITP/SOF generation
>>> +          in host mode. Its frequency should be 19.2MHz.
>>> +      - description: Sleep clock, used for wakeup when
>>> +          USB3 core goes into low power mode (U3).
>>> +
>>> +  clock-names:
>>> +    items:
>>> +      - const: cfg_noc
>>> +      - const: core
>>> +      - const: iface
>>> +      - const: mock_utmi
>>> +      - const: sleep
>>> +
>>> +  assigned-clocks:
>>> +    items:
>>> +      - description: Phandle and clock specifier of MOCK_UTMI_CLK.
>>> +      - description: Phandle and clock specifoer of MASTER_CLK.
>>> +
>>> +  assigned-clock-rates:
>>> +    maxItems: 2
>> Need to drop this as it is redundant. Soon this will generate an error.
> Will do in next version.
>>> +    items:
>>> +      - description: Must be 19.2MHz (19200000).
>> Sounds like a constraint:
>>
>> - const: 19200000
>>
>>> +      - description: Must be >= 60 MHz in HS mode, >= 125 MHz in SS 
>>> mode.
>> - minimum: 60000000
>>    maximum: ?
>
> Tried  as below but facing errors
>
> assigned-clock-rates:
>     items:
>       - const: 19200000
>       - minimum: 60000000
>         maximum: 150000000
>
> Errors
>
> linux-next/Documentation/devicetree/bindings/usb/qcom,dwc3.example.dt.yaml: 
> usb@a6f8800: assigned-clock-rates: Additional items are not allowed 
> ([150000000] was unexpected)
> linux-next/Documentation/devicetree/bindings/usb/qcom,dwc3.example.dt.yaml: 
> usb@a6f8800: assigned-clock-rates:0: [19200000] is too short
> linux-next/Documentation/devicetree/bindings/usb/qcom,dwc3.example.dt.yaml: 
> usb@a6f8800: assigned-clock-rates: [[19200000], [150000000]] is too long
>
>>> +
>>> +  resets:
>>> +    maxItems: 1
>>> +
>>> +  interrupts:
>>> +    items:
>>> +      - description: The interrupt that is asserted
>>> +          when a wakeup event is received on USB2 bus.
>>> +      - description: The interrupt that is asserted
>>> +          when a wakeup event is received on USB3 bus.
>>> +      - description: Wakeup event on DM line.
>>> +      - description: Wakeup event on DP line.
>>> +
>>> +  interrupt-names:
>>> +    items:
>>> +      - const: hs_phy_irq
>>> +      - const: ss_phy_irq
>>> +      - const: dm_hs_phy_irq
>>> +      - const: dp_hs_phy_irq
>>> +
>>> +  qcom,select-utmi-as-pipe-clk:
>>> +    description:
>>> +      If present, disable USB3 pipe_clk requirement.
>>> +      Used when dwc3 operates without SSPHY and only
>>> +      HS/FS/LS modes are supported.
>>> +    type: boolean
>>> +
>>> +# Required child node:
>>> +
>>> +patternProperties:
>>> +  "^dwc3@[0-9a-f]+$":
>>> +    type: object
>>> +    description:
>>> +      A child node must exist to represent the core DWC3 IP block
>>> +      The content of the node is defined in dwc3.txt.
>>> +
>>> +required:
>>> +  - compatible
>>> +  - reg
>>> +  - "#address-cells"
>>> +  - "#size-cells"
>>> +  - power-domains
>>> +  - clocks
>>> +  - clock-names
>>> +
>>> +examples:
>>> +  - |
>>> +    #include <dt-bindings/clock/qcom,gcc-sdm845.h>
>>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>>> +    #include <dt-bindings/interrupt-controller/irq.h>
>>> +    usb@a6f8800 {
>>> +        compatible = "qcom,sdm845-dwc3", "qcom,dwc3";
>>> +        reg = <0 0x0a6f8800 0 0x400>;
>>> +
>>> +        #address-cells = <2>;
>>> +        #size-cells = <2>;
>>> +
>>> +        clocks = <&gcc GCC_CFG_NOC_USB3_PRIM_AXI_CLK>,
>>> +                 <&gcc GCC_USB30_PRIM_MASTER_CLK>,
>>> +                 <&gcc GCC_AGGRE_USB3_PRIM_AXI_CLK>,
>>> +                 <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,
>>> +                 <&gcc GCC_USB30_PRIM_SLEEP_CLK>;
>>> +        clock-names = "cfg_noc", "core", "iface", "mock_utmi",
>>> +                      "sleep";
>>> +
>>> +        assigned-clocks = <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,
>>> +                          <&gcc GCC_USB30_PRIM_MASTER_CLK>;
>>> +        assigned-clock-rates = <19200000>, <150000000>;
>>> +
>>> +        interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>,
>>> +                     <GIC_SPI 486 IRQ_TYPE_LEVEL_HIGH>,
>>> +                     <GIC_SPI 488 IRQ_TYPE_LEVEL_HIGH>,
>>> +                     <GIC_SPI 489 IRQ_TYPE_LEVEL_HIGH>;
>>> +        interrupt-names = "hs_phy_irq", "ss_phy_irq",
>>> +                          "dm_hs_phy_irq", "dp_hs_phy_irq";
>>> +
>>> +        power-domains = <&gcc USB30_PRIM_GDSC>;
>>> +
>>> +        resets = <&gcc GCC_USB30_PRIM_BCR>;
>>> +
>>> +        dwc3@a600000 {
>>> +            compatible = "snps,dwc3";
>>> +            reg = <0 0x0a600000 0 0xcd00>;
>> You need 'ranges' in the parent for this address to be translatable.
> Will add in next version.
>>
>>> +            interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
>>> +            iommus = <&apps_smmu 0x740 0>;
>>> +            snps,dis_u2_susphy_quirk;
>>> +            snps,dis_enblslpm_quirk;
>>> +            phys = <&usb_1_hsphy>, <&usb_1_ssphy>;
>>> +            phy-names = "usb2-phy", "usb3-phy";
>>> +        };
>>> +    };
>>> -- 
>>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a 
>>> member
>>> of Code Aurora Forum, hosted by The Linux Foundation
>>>
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation