On 17/06/2024 20:14, Shresth Prasad wrote:
>>> +examples:
>>> + - |
>>> + grf: syscon@ff770000 {
>>
>> Drop label... actually entire node looks not needed.
>
> From what I understand, this `phy` node should be a sub-node of a `grf`
> node which is why it is part of the example.
>
>>
>>> + compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
>>
>> Drop
>>
>>> + reg = <0xff770000 0x10000>;
>>
>> Drop
>
> Removing `reg` causes the following warning:
> Warning (unit_address_vs_reg): /example-0/syscon@ff770000: node has a
> unit name, but no reg or ranges property
>
> Please let me know what the prefered solution would be here.
Obviously you need to drop entire node... You cannot just drop reg and
leave unit address.
>
>>
>>
>>> + #address-cells = <1>;
>>> + #size-cells = <1>;
>>> +
>>> + emmcphy: phy@f780 {
>>
>> Drop label
>>
>>> + compatible = "rockchip,rk3399-emmc-phy";
>>> + reg = <0xf780 0x20>;
>>> + clocks = <&sdhci>;
>>> + clock-names = "emmcclk";
>>> + drive-impedance-ohm = <50>;
>>> + #phy-cells = <0>;
>>> + };
>>> + };
>>> diff --git a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
>>> deleted file mode 100644
>>> index 57d28c0d5696..000000000000
>>> --- a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
>>> +++ /dev/null
>>> @@ -1,43 +0,0 @@
>>> -Rockchip EMMC PHY
>>> ------------------------
>>> -
>>> -Required properties:
>>> - - compatible: rockchip,rk3399-emmc-phy
>>> - - #phy-cells: must be 0
>>> - - reg: PHY register address offset and length in "general
>>> - register files"
>>> -
>>> -Optional properties:
>>> - - clock-names: Should contain "emmcclk". Although this is listed as optional
>>> - (because most boards can get basic functionality without having
>>> - access to it), it is strongly suggested.
>>> - See ../clock/clock-bindings.txt for details.
>>> - - clocks: Should have a phandle to the card clock exported by the SDHCI driver.
>>> - - drive-impedance-ohm: Specifies the drive impedance in Ohm.
>>> - Possible values are 33, 40, 50, 66 and 100.
>>> - If not set, the default value of 50 will be applied.
>>> - - rockchip,enable-strobe-pulldown: Enable internal pull-down for the strobe
>>> - line. If not set, pull-down is not used.
>>> - - rockchip,output-tapdelay-select: Specifies the phyctrl_otapdlysec register.
>>> - If not set, the register defaults to 0x4.
>>> - Maximum value 0xf.
>>> -
>>> -Example:
>>> -
>>> -
>>> -grf: syscon@ff770000 {
>>> - compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
>>> - #address-cells = <1>;
>>> - #size-cells = <1>;
>>> -
>>> -...
>>> -
>>> - emmcphy: phy@f780 {
>>> - compatible = "rockchip,rk3399-emmc-phy";
>>> - reg = <0xf780 0x20>;
>>> - clocks = <&sdhci>;
>>> - clock-names = "emmcclk";
>>> - drive-impedance-ohm = <50>;
>>> - #phy-cells = <0>;
>>> - };
>>> -};
>>> diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
>>> index 79798c747476..6e1b1cdea680 100644
>>> --- a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
>>> +++ b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
>>> @@ -176,9 +176,12 @@ allOf:
>>> Documentation/devicetree/bindings/phy/rockchip-pcie-phy.txt
>>>
>>> patternProperties:
>>> - "phy@[0-9a-f]+$":
>>> - description:
>>> - Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
>>> + "^phy@[0-9a-f]+$":
>>> + type: object
>>> +
>>
>> Drop blank line
>>
>>> + $ref: /schemas/phy/rockchip,rk3399-emmc-phy.yaml#
>>> +
>>
>> Drop blank line
>
> The rest of the document also has these blank lines, which is why I've
> also kept them here. Are you sure I should remove them?
Yes
>
>>
>>> + unevaluatedProperties: false
>>>
>>> - if:
>>> properties:
>>
>> Nothing in example? Isn't the example for 3399?
>>
>> We want only one complete example of such multi-children devices, so the
>> example can be moved and included in existing one here.
>
> The example in this file is actually for `rockchip,rk3399-usb2phy` and
> not `rockchip,rk3399-emmc-phy` which is why I haven't touched it.
What? That's gref, not usb2phy.
This patch and your explanations are very confusing.
Best regards,
Krzysztof
