Re: [PATCH v3 5/7] arm64: dts: rockchip: add rk356x dwc3 usb3 nodes

[Johan Jonker <jbx6244@gmail.com>]

On 2/28/22 14:02, Peter Geis wrote:
> On Mon, Feb 28, 2022 at 4:10 AM Johan Jonker <jbx6244@gmail.com> wrote:
>>
>>
>>
>> On 2/27/22 23:44, Peter Geis wrote:
>>> On Sun, Feb 27, 2022 at 12:50 PM Johan Jonker <jbx6244@gmail.com> wrote:
>>>>
>>>>
>>>>
>>>> On 2/27/22 16:30, Peter Geis wrote:
>>>>> Add the dwc3 device nodes to the rk356x device trees.
>>>>> The rk3566 has one usb2 capable dwc3 otg controller and one usb3 capable
>>>>> dwc3 host controller.
>>>>> The rk3568 has one usb3 capable dwc3 otg controller and one usb3 capable
>>>>> dwc3 host controller.
>>>>>
>>>>> Signed-off-by: Peter Geis <pgwipeout@gmail.com>
>>>>> ---
>>>>>  arch/arm64/boot/dts/rockchip/rk3566.dtsi | 11 ++++++++
>>>>>  arch/arm64/boot/dts/rockchip/rk3568.dtsi |  9 ++++++
>>>>>  arch/arm64/boot/dts/rockchip/rk356x.dtsi | 35 +++++++++++++++++++++++-
>>>>>  3 files changed, 54 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3566.dtsi b/arch/arm64/boot/dts/rockchip/rk3566.dtsi
>>>>> index 3839eef5e4f7..0b957068ff89 100644
>>>>> --- a/arch/arm64/boot/dts/rockchip/rk3566.dtsi
>>>>> +++ b/arch/arm64/boot/dts/rockchip/rk3566.dtsi
>>>>> @@ -6,6 +6,10 @@ / {
>>>>>       compatible = "rockchip,rk3566";
>>>>>  };
>>>>>
>>>>> +&pipegrf {
>>>>> +     compatible = "rockchip,rk3566-pipe-grf", "syscon";
>>>>> +};
>>>>> +
>>>>>  &power {
>>>>>       power-domain@RK3568_PD_PIPE {
>>>>>               reg = <RK3568_PD_PIPE>;
>>>>> @@ -18,3 +22,10 @@ power-domain@RK3568_PD_PIPE {
>>>>>               #power-domain-cells = <0>;
>>>>>       };
>>>>>  };
>>>>> +
>>>>> +&usb_host0_xhci {
>>>>> +     phys = <&usb2phy0_otg>;
>>>>> +     phy-names = "usb2-phy";
>>>>> +     extcon = <&usb2phy0>;
>>>>> +     maximum-speed = "high-speed";
>>>>> +};
>>>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3568.dtsi b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
>>>>> index 5b0f528d6818..8ba9334f9753 100644
>>>>> --- a/arch/arm64/boot/dts/rockchip/rk3568.dtsi
>>>>> +++ b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
>>>>> @@ -99,6 +99,10 @@ opp-1992000000 {
>>>>>       };
>>>>>  };
>>>>>
>>>>> +&pipegrf {
>>>>> +     compatible = "rockchip,rk3568-pipe-grf", "syscon";
>>>>> +};
>>>>> +
>>>>>  &power {
>>>>>       power-domain@RK3568_PD_PIPE {
>>>>>               reg = <RK3568_PD_PIPE>;
>>>>> @@ -114,3 +118,8 @@ power-domain@RK3568_PD_PIPE {
>>>>>               #power-domain-cells = <0>;
>>>>>       };
>>>>>  };
>>>>> +
>>>>> +&usb_host0_xhci {
>>>>> +     phys = <&usb2phy0_otg>, <&combphy0 PHY_TYPE_USB3>;
>>>>> +     phy-names = "usb2-phy", "usb3-phy";
>>>>> +};
>>>>> diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
>>>>> index 7cdef800cb3c..072bb9080cd6 100644
>>>>> --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
>>>>> +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
>>>>> @@ -230,6 +230,40 @@ scmi_shmem: sram@0 {
>>>>>               };
>>>>>       };
>>>>>
>>>>> +     usb_host0_xhci: usb@fcc00000 {
>>>>
>>>>> +             compatible = "snps,dwc3";
>>>>
>>>> compatible = "rockchip,rk3568-dwc3", "snps,dwc3";
>>>>
>>>> compatible strings must be SoC orientated.
>>>> Add binding like you did before.
>>>
>>> Okay, should this go in the core yaml, since it's not really handled
>>> by of-simple?
>>
>> Nothing to change in core.c, because the fall back string does the
>> trick, so we don't have to change the driver for every new SoC.
>> Change the node compatible here and add the binding.
>> That's it. The rest comes later if needed.
> 
> It's the binding I'm referring to here.
> snps,dwc3.yaml seems the logical place, but I want to make sure you
> concur first.

rockchip,dwc3.yaml is the place be!
Hurry up!

Use Michael's patch, because his commit message is better.(no reference
to rk3399)

https://lore.kernel.org/linux-rockchip/20220225131602.2283499-3-michael.riesch@wolfvision.net/

vs.

https://lore.kernel.org/linux-rockchip/20220226184147.769964-4-pgwipeout@gmail.com/

> 
>>
>>> Also, should I add in the compatible for rk3328 as well?
>>
>> No, same story the fall back string does the trick in core.c
> 
> Same thing here, since I'm in snps,dwc3.yaml anyways I can add the
> rk3328 binding in and silence that error in one go.

It's been done already:

[PATCH v5 6/8] dt-bindings: usb: dwc3: add description for rk3328

https://lore.kernel.org/linux-rockchip/20210209192350.7130-6-jbx6244@gmail.com/


> 
>>
>>
>>>
>>>>
>>>>> +             reg = <0x0 0xfcc00000 0x0 0x400000>;
>>>>> +             interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
>>>>> +             clocks = <&cru CLK_USB3OTG0_REF>, <&cru CLK_USB3OTG0_SUSPEND>,
>>>>> +                      <&cru ACLK_USB3OTG0>;
>>>>> +             clock-names = "ref_clk", "suspend_clk",
>>>>> +                           "bus_clk";
>>>>> +             dr_mode = "host";
>>>>> +             phy_type = "utmi_wide";
>>>>> +             power-domains = <&power RK3568_PD_PIPE>;
>>>>> +             resets = <&cru SRST_USB3OTG0>;
>>>>> +             snps,dis_u2_susphy_quirk;
>>>>> +             status = "disabled";
>>>>> +     };
>>>>> +
>>>>> +     usb_host1_xhci: usb@fd000000 {
>>>>
>>>>> +             compatible = "snps,dwc3";
>>>>
>>>> compatible = "rockchip,rk3568-dwc3", "snps,dwc3";
>>>>
>>>>> +             reg = <0x0 0xfd000000 0x0 0x400000>;
>>>>> +             interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
>>>>> +             clocks = <&cru CLK_USB3OTG1_REF>, <&cru CLK_USB3OTG1_SUSPEND>,
>>>>> +                      <&cru ACLK_USB3OTG1>;
>>>>> +             clock-names = "ref_clk", "suspend_clk",
>>>>> +                           "bus_clk";
>>>>> +             dr_mode = "host";
>>>>> +             phys = <&usb2phy0_host>, <&combphy1 PHY_TYPE_USB3>;
>>>>> +             phy-names = "usb2-phy", "usb3-phy";
>>>>> +             phy_type = "utmi_wide";
>>>>> +             power-domains = <&power RK3568_PD_PIPE>;
>>>>> +             resets = <&cru SRST_USB3OTG1>;
>>>>> +             snps,dis_u2_susphy_quirk;
>>>>> +             status = "disabled";
>>>>> +     };
>>>>> +
>>>>>       gic: interrupt-controller@fd400000 {
>>>>>               compatible = "arm,gic-v3";
>>>>>               reg = <0x0 0xfd400000 0 0x10000>, /* GICD */
>>>>> @@ -297,7 +331,6 @@ pmu_io_domains: io-domains {
>>>>>       };
>>>>>
>>>>>       pipegrf: syscon@fdc50000 {
>>>>> -             compatible = "rockchip,rk3568-pipe-grf", "syscon";
>>>>>               reg = <0x0 0xfdc50000 0x0 0x1000>;
>>>>>       };
>>>>>