[PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[Jonas Karlman]

The Rockchip RK3568 EHCI/OHCI controller depends on clk_usbphy1_480m
being enabled, or the system may freeze when registers are accessed.

Add Rockchip RK3568 EHCI and OHCI compatibles with a similar four-clock
constraint as RK3588.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
Existing DTs for RK3568 use the plain generic-ehci/ohci compatible,
next patch make use of these new compatibles and adds the missing
clk_usbphy1_480m clock references.
---
 .../devicetree/bindings/usb/generic-ehci.yaml          | 10 ++++++++++
 .../devicetree/bindings/usb/generic-ohci.yaml          |  5 ++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
index 55a5aa7d7a54..c49a1bbc8cfd 100644
--- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
+++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
@@ -52,6 +52,7 @@ properties:
               - ibm,476gtr-ehci
               - nxp,lpc1850-ehci
               - qca,ar7100-ehci
+              - rockchip,rk3568-ehci
               - rockchip,rk3588-ehci
               - snps,hsdk-v1.0-ehci
               - socionext,uniphier-ehci
@@ -186,6 +187,15 @@ allOf:
       required:
         - clocks
         - clock-names
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3568-ehci
+    then:
+      properties:
+        clocks:
+          minItems: 4
 
 unevaluatedProperties: false
 
diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
index d42f448fa204..5f1b4d2bff89 100644
--- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
+++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
@@ -47,6 +47,7 @@ properties:
               - hpe,gxp-ohci
               - ibm,476gtr-ohci
               - ingenic,jz4740-ohci
+              - rockchip,rk3568-ohci
               - rockchip,rk3588-ohci
               - snps,hsdk-v1.0-ohci
           - const: generic-ohci
@@ -198,7 +199,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: rockchip,rk3588-ohci
+            enum:
+              - rockchip,rk3568-ohci
+              - rockchip,rk3588-ohci
     then:
       properties:
         clocks:
-- 
2.54.0

[PATCH 2/2] arm64: dts: rockchip: Fix devices suspend freeze on RK3568/RK3566

[Jonas Karlman]

The EHCI/OHCI controller depends on clk_usbphy1_480m being enabled, or
the system may freeze when registers are accessed, i.e. during suspend
in ohci_suspend().

Add the missing clk_usbphy1_480m clocks reference to EHCI/OHCI
controllers to ensure the clock is enabled when ECHI/OHCI registers are
accessed to prevent a system freeze.

Fixes suspend pm_test issue with EHCI/OHCI devices due to the missing
clk_usbphy1_480m reference and makes following pm_test modes work:

  echo N > /sys/module/printk/parameters/console_suspend

  echo devices > /sys/power/pm_test
  echo platform > /sys/power/pm_test
  echo processors > /sys/power/pm_test
  echo core > /sys/power/pm_test

  echo mem > /sys/power/state

Fixes: 91c4c3e06a25 ("arm64: dts: rockchip: add usb2 nodes to rk3568 device tree")
Fixes: 78f7186095db ("arm64: dts: rockchip: rename and sort the rk356x usb2 phy handles")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
 arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
index a5832895bd39..c930a6fd6ea0 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
@@ -321,44 +321,44 @@ its: msi-controller@fd440000 {
 	};
 
 	usb_host0_ehci: usb@fd800000 {
-		compatible = "generic-ehci";
+		compatible = "rockchip,rk3568-ehci", "generic-ehci";
 		reg = <0x0 0xfd800000 0x0 0x40000>;
 		interrupts = <GIC_SPI 130 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USB2HOST0>, <&cru HCLK_USB2HOST0_ARB>,
-			 <&cru PCLK_USB>;
+			 <&cru PCLK_USB>, <&usb2phy1>;
 		phys = <&usb2phy1_otg>;
 		phy-names = "usb";
 		status = "disabled";
 	};
 
 	usb_host0_ohci: usb@fd840000 {
-		compatible = "generic-ohci";
+		compatible = "rockchip,rk3568-ohci", "generic-ohci";
 		reg = <0x0 0xfd840000 0x0 0x40000>;
 		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USB2HOST0>, <&cru HCLK_USB2HOST0_ARB>,
-			 <&cru PCLK_USB>;
+			 <&cru PCLK_USB>, <&usb2phy1>;
 		phys = <&usb2phy1_otg>;
 		phy-names = "usb";
 		status = "disabled";
 	};
 
 	usb_host1_ehci: usb@fd880000 {
-		compatible = "generic-ehci";
+		compatible = "rockchip,rk3568-ehci", "generic-ehci";
 		reg = <0x0 0xfd880000 0x0 0x40000>;
 		interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USB2HOST1>, <&cru HCLK_USB2HOST1_ARB>,
-			 <&cru PCLK_USB>;
+			 <&cru PCLK_USB>, <&usb2phy1>;
 		phys = <&usb2phy1_host>;
 		phy-names = "usb";
 		status = "disabled";
 	};
 
 	usb_host1_ohci: usb@fd8c0000 {
-		compatible = "generic-ohci";
+		compatible = "rockchip,rk3568-ohci", "generic-ohci";
 		reg = <0x0 0xfd8c0000 0x0 0x40000>;
 		interrupts = <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USB2HOST1>, <&cru HCLK_USB2HOST1_ARB>,
-			 <&cru PCLK_USB>;
+			 <&cru PCLK_USB>, <&usb2phy1>;
 		phys = <&usb2phy1_host>;
 		phy-names = "usb";
 		status = "disabled";
-- 
2.54.0

Re: [PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Medium] The conditional blocks enforcing the four-clock constraint for the Rockchip RK3568 compatibles do not add the `clocks` property to the `required` list.
--

commit 8a014eea3faedb9781ac7a8ab3c2e305d28df2a3
Author: Jonas Karlman <jonas@kwiboo.se>

dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

This commit adds Rockchip RK3568 compatible strings for the EHCI and OHCI
controllers. It introduces a four-clock constraint to ensure the required
clocks are enabled to prevent system freezes.

> diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> index 55a5aa7d7a54e..c49a1bbc8cfdb 100644
> --- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> +++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml

[ ... ]

> @@ -186,6 +187,15 @@ allOf:
>        required:
>          - clocks
>          - clock-names
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3568-ehci
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 4

[Severity: Medium]
Should the clocks property be added to the required list in this block?

Since property constraints like minItems are only evaluated if the property
is actually present in the device tree node, a node that completely omits
the clocks property will silently pass validation without enforcing the
four-clock constraint.

Given the commit message mentions these clocks are required to prevent
system freezes, it seems important to enforce their presence by adding
a required list here.

> diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> index d42f448fa2044..5f1b4d2bff891 100644
> --- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> +++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml

[ ... ]

> @@ -198,7 +199,9 @@ allOf:
>        properties:
>          compatible:
>            contains:
> -            const: rockchip,rk3588-ohci
> +            enum:
> +              - rockchip,rk3568-ohci
> +              - rockchip,rk3588-ohci
>      then:
>        properties:
>          clocks:
>            minItems: 4

[Severity: Medium]
Similarly here, should clocks be explicitly required for the OHCI
controllers? 

Without adding it to the required list, device trees missing the clocks
property entirely will bypass this constraint and pass schema validation.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260609154124.445182-1-jonas@kwiboo.se?part=1

Re: [PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 640 bytes --]

On Tue, Jun 09, 2026 at 03:41:22PM +0000, Jonas Karlman wrote:
> The Rockchip RK3568 EHCI/OHCI controller depends on clk_usbphy1_480m
> being enabled, or the system may freeze when registers are accessed.
> 
> Add Rockchip RK3568 EHCI and OHCI compatibles with a similar four-clock
> constraint as RK3588.
> 
> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
> ---
> Existing DTs for RK3568 use the plain generic-ehci/ohci compatible,
> next patch make use of these new compatibles and adds the missing
> clk_usbphy1_480m clock references.

Reasonable complaint here from Sashiko.
pw-bot: changes-requested

Cheers,
Conor.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

Re: [PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[Diederik de Haas]

Hi Jonas,

On Tue Jun 9, 2026 at 5:41 PM CEST, Jonas Karlman wrote:
> The Rockchip RK3568 EHCI/OHCI controller depends on clk_usbphy1_480m
> being enabled, or the system may freeze when registers are accessed.
>
> Add Rockchip RK3568 EHCI and OHCI compatibles with a similar four-clock
> constraint as RK3588.
>
> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
> ---
> Existing DTs for RK3568 use the plain generic-ehci/ohci compatible,
> next patch make use of these new compatibles and adds the missing
> clk_usbphy1_480m clock references.
> ---
>  .../devicetree/bindings/usb/generic-ehci.yaml          | 10 ++++++++++
>  .../devicetree/bindings/usb/generic-ohci.yaml          |  5 ++++-
>  2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> index 55a5aa7d7a54..c49a1bbc8cfd 100644
> --- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> +++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
> @@ -52,6 +52,7 @@ properties:
>                - ibm,476gtr-ehci
>                - nxp,lpc1850-ehci
>                - qca,ar7100-ehci
> +              - rockchip,rk3568-ehci
>                - rockchip,rk3588-ehci
>                - snps,hsdk-v1.0-ehci
>                - socionext,uniphier-ehci
> @@ -186,6 +187,15 @@ allOf:
>        required:
>          - clocks
>          - clock-names
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3568-ehci
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 4

I think that the constraint for rk3588 is this:
- minItems: 1
- maxItems: 4

Like ~ every other compatible; there's no 'branch' for rk3588-ehci.

That's different from what you add for rk3568. Is that deliberate?
Because from the commit message I assumed they should be the same.

>  unevaluatedProperties: false
>  
> diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> index d42f448fa204..5f1b4d2bff89 100644
> --- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> +++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
> @@ -47,6 +47,7 @@ properties:
>                - hpe,gxp-ohci
>                - ibm,476gtr-ohci
>                - ingenic,jz4740-ohci
> +              - rockchip,rk3568-ohci
>                - rockchip,rk3588-ohci
>                - snps,hsdk-v1.0-ohci
>            - const: generic-ohci
> @@ -198,7 +199,9 @@ allOf:
>        properties:
>          compatible:
>            contains:
> -            const: rockchip,rk3588-ohci
> +            enum:
> +              - rockchip,rk3568-ohci
> +              - rockchip,rk3588-ohci

Here they clearly do have the same constraint.

Cheers,
  Diederik

>      then:
>        properties:
>          clocks:

Re: [PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[Jonas Karlman]

Hi Diederik,

On 6/9/2026 6:32 PM, Diederik de Haas wrote:
> Hi Jonas,
> 
> On Tue Jun 9, 2026 at 5:41 PM CEST, Jonas Karlman wrote:
>> The Rockchip RK3568 EHCI/OHCI controller depends on clk_usbphy1_480m
>> being enabled, or the system may freeze when registers are accessed.
>>
>> Add Rockchip RK3568 EHCI and OHCI compatibles with a similar four-clock
>> constraint as RK3588.
>>
>> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
>> ---
>> Existing DTs for RK3568 use the plain generic-ehci/ohci compatible,
>> next patch make use of these new compatibles and adds the missing
>> clk_usbphy1_480m clock references.
>> ---
>>  .../devicetree/bindings/usb/generic-ehci.yaml          | 10 ++++++++++
>>  .../devicetree/bindings/usb/generic-ohci.yaml          |  5 ++++-
>>  2 files changed, 14 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
>> index 55a5aa7d7a54..c49a1bbc8cfd 100644
>> --- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
>> +++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
>> @@ -52,6 +52,7 @@ properties:
>>                - ibm,476gtr-ehci
>>                - nxp,lpc1850-ehci
>>                - qca,ar7100-ehci
>> +              - rockchip,rk3568-ehci
>>                - rockchip,rk3588-ehci
>>                - snps,hsdk-v1.0-ehci
>>                - socionext,uniphier-ehci
>> @@ -186,6 +187,15 @@ allOf:
>>        required:
>>          - clocks
>>          - clock-names
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: rockchip,rk3568-ehci
>> +    then:
>> +      properties:
>> +        clocks:
>> +          minItems: 4
> 
> I think that the constraint for rk3588 is this:
> - minItems: 1
> - maxItems: 4
> 
> Like ~ every other compatible; there's no 'branch' for rk3588-ehci.
> 
> That's different from what you add for rk3568. Is that deliberate?
> Because from the commit message I assumed they should be the same.

It was deliberate, the intention is to use min/maxItems: 4 for rk3568
for both EHCI and OHCI. I left out anything related to k3588 to keep
existing behavior and avoid any possible breakage, and why I used
'similar' and not 'same' in the commit message ;-)

Did a check and the rk3588 variant also uses 4 clocks so I will add same
constraint for the rk3588 variant and address Sashiko's concern in v2.

Regards,
Jonas

> 
>>  unevaluatedProperties: false
>>  
>> diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
>> index d42f448fa204..5f1b4d2bff89 100644
>> --- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
>> +++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
>> @@ -47,6 +47,7 @@ properties:
>>                - hpe,gxp-ohci
>>                - ibm,476gtr-ohci
>>                - ingenic,jz4740-ohci
>> +              - rockchip,rk3568-ohci
>>                - rockchip,rk3588-ohci
>>                - snps,hsdk-v1.0-ohci
>>            - const: generic-ohci
>> @@ -198,7 +199,9 @@ allOf:
>>        properties:
>>          compatible:
>>            contains:
>> -            const: rockchip,rk3588-ohci
>> +            enum:
>> +              - rockchip,rk3568-ohci
>> +              - rockchip,rk3588-ohci
> 
> Here they clearly do have the same constraint.
> 
> Cheers,
>   Diederik
> 
>>      then:
>>        properties:
>>          clocks:
> 

Re: [PATCH 1/2] dt-bindings: usb: Add Rockchip RK3568 compatible for EHCI and OHCI

[Diederik de Haas]

Hi Jonas,

On Tue Jun 9, 2026 at 8:06 PM CEST, Jonas Karlman wrote:
> Hi Diederik,
>
> On 6/9/2026 6:32 PM, Diederik de Haas wrote:
>> Hi Jonas,
>> 
>> On Tue Jun 9, 2026 at 5:41 PM CEST, Jonas Karlman wrote:
>>> The Rockchip RK3568 EHCI/OHCI controller depends on clk_usbphy1_480m
>>> being enabled, or the system may freeze when registers are accessed.
>>>
>>> Add Rockchip RK3568 EHCI and OHCI compatibles with a similar four-clock
>>> constraint as RK3588.
>>>
>>> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
>>> ---
>>> Existing DTs for RK3568 use the plain generic-ehci/ohci compatible,
>>> next patch make use of these new compatibles and adds the missing
>>> clk_usbphy1_480m clock references.
>>> ---
>>>  .../devicetree/bindings/usb/generic-ehci.yaml          | 10 ++++++++++
>>>  .../devicetree/bindings/usb/generic-ohci.yaml          |  5 ++++-
>>>  2 files changed, 14 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
>>> index 55a5aa7d7a54..c49a1bbc8cfd 100644
>>> --- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
>>> +++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
>>> @@ -52,6 +52,7 @@ properties:
>>>                - ibm,476gtr-ehci
>>>                - nxp,lpc1850-ehci
>>>                - qca,ar7100-ehci
>>> +              - rockchip,rk3568-ehci
>>>                - rockchip,rk3588-ehci
>>>                - snps,hsdk-v1.0-ehci
>>>                - socionext,uniphier-ehci
>>> @@ -186,6 +187,15 @@ allOf:
>>>        required:
>>>          - clocks
>>>          - clock-names
>>> +  - if:
>>> +      properties:
>>> +        compatible:
>>> +          contains:
>>> +            const: rockchip,rk3568-ehci
>>> +    then:
>>> +      properties:
>>> +        clocks:
>>> +          minItems: 4
>> 
>> I think that the constraint for rk3588 is this:
>> - minItems: 1
>> - maxItems: 4
>> 
>> Like ~ every other compatible; there's no 'branch' for rk3588-ehci.
>> 
>> That's different from what you add for rk3568. Is that deliberate?
>> Because from the commit message I assumed they should be the same.
>
> It was deliberate, the intention is to use min/maxItems: 4 for rk3568

Thanks :-)

> for both EHCI and OHCI. I left out anything related to k3588 to keep
> existing behavior and avoid any possible breakage, and why I used
> 'similar' and not 'same' in the commit message ;-)
>
> Did a check and the rk3588 variant also uses 4 clocks so I will add same
> constraint for the rk3588 variant and address Sashiko's concern in v2.

FWIW: I would be absolutely fine if you restrict this patch set to just RK3568.
For the same reason you mentioned. All I wanted to know if it was deliberate
and you confirmed that :-)

Cheers,
  Diederik

> Regards,
> Jonas
>
>> 
>>>  unevaluatedProperties: false
>>>  
>>> diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
>>> index d42f448fa204..5f1b4d2bff89 100644
>>> --- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
>>> +++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
>>> @@ -47,6 +47,7 @@ properties:
>>>                - hpe,gxp-ohci
>>>                - ibm,476gtr-ohci
>>>                - ingenic,jz4740-ohci
>>> +              - rockchip,rk3568-ohci
>>>                - rockchip,rk3588-ohci
>>>                - snps,hsdk-v1.0-ohci
>>>            - const: generic-ohci
>>> @@ -198,7 +199,9 @@ allOf:
>>>        properties:
>>>          compatible:
>>>            contains:
>>> -            const: rockchip,rk3588-ohci
>>> +            enum:
>>> +              - rockchip,rk3568-ohci
>>> +              - rockchip,rk3588-ohci
>> 
>> Here they clearly do have the same constraint.
>> 
>> Cheers,
>>   Diederik
>> 
>>>      then:
>>>        properties:
>>>          clocks:
>> 

Re: [PATCH 2/2] arm64: dts: rockchip: Fix devices suspend freeze on RK3568/RK3566

[Diederik de Haas]

Hi Jonas,

On Tue Jun 9, 2026 at 5:41 PM CEST, Jonas Karlman wrote:
> The EHCI/OHCI controller depends on clk_usbphy1_480m being enabled, or
> the system may freeze when registers are accessed, i.e. during suspend
> in ohci_suspend().
>
> Add the missing clk_usbphy1_480m clocks reference to EHCI/OHCI
> controllers to ensure the clock is enabled when ECHI/OHCI registers are
> accessed to prevent a system freeze.
>
> Fixes suspend pm_test issue with EHCI/OHCI devices due to the missing
> clk_usbphy1_480m reference and makes following pm_test modes work:
>
>   echo N > /sys/module/printk/parameters/console_suspend
>
>   echo devices > /sys/power/pm_test
>   echo platform > /sys/power/pm_test
>   echo processors > /sys/power/pm_test
>   echo core > /sys/power/pm_test
>
>   echo mem > /sys/power/state

I did quite a few of ``echo mem > /sys/power/state`` while switching between
the various pm_test options on my PineTab2.

On my 7.1-rc7 kernel without this patch that resulted at some point in endless
'rk_iommu' errors and the only way out of that was a hard power down via the
power button.
On my 7.1-rc7 kernel with this patch, I have not been able to trigger such an
issue. Over multiple boots. 

So feel free to include my

Tested-by: Diederik de Haas <diederik@cknow-tech.com>

FTR: I'm still able to trigger resume issues, so more is needed to make my
original tests [1] succeed as well. But I always suspected there were several
issues at play including the display pipeline.
It looks like this patch fixes at least one of them.

Thanks :-)

Cheers,
  Diederik

[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/31265

> Fixes: 91c4c3e06a25 ("arm64: dts: rockchip: add usb2 nodes to rk3568 device tree")
> Fixes: 78f7186095db ("arm64: dts: rockchip: rename and sort the rk356x usb2 phy handles")
> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
> ---
>  arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
> index a5832895bd39..c930a6fd6ea0 100644
> --- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
> @@ -321,44 +321,44 @@ its: msi-controller@fd440000 {
>  	};
>  
>  	usb_host0_ehci: usb@fd800000 {
> -		compatible = "generic-ehci";
> +		compatible = "rockchip,rk3568-ehci", "generic-ehci";
>  		reg = <0x0 0xfd800000 0x0 0x40000>;
>  		interrupts = <GIC_SPI 130 IRQ_TYPE_LEVEL_HIGH>;
>  		clocks = <&cru HCLK_USB2HOST0>, <&cru HCLK_USB2HOST0_ARB>,
> -			 <&cru PCLK_USB>;
> +			 <&cru PCLK_USB>, <&usb2phy1>;
>  		phys = <&usb2phy1_otg>;
>  		phy-names = "usb";
>  		status = "disabled";
>  	};
>  
>  	usb_host0_ohci: usb@fd840000 {
> -		compatible = "generic-ohci";
> +		compatible = "rockchip,rk3568-ohci", "generic-ohci";
>  		reg = <0x0 0xfd840000 0x0 0x40000>;
>  		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
>  		clocks = <&cru HCLK_USB2HOST0>, <&cru HCLK_USB2HOST0_ARB>,
> -			 <&cru PCLK_USB>;
> +			 <&cru PCLK_USB>, <&usb2phy1>;
>  		phys = <&usb2phy1_otg>;
>  		phy-names = "usb";
>  		status = "disabled";
>  	};
>  
>  	usb_host1_ehci: usb@fd880000 {
> -		compatible = "generic-ehci";
> +		compatible = "rockchip,rk3568-ehci", "generic-ehci";
>  		reg = <0x0 0xfd880000 0x0 0x40000>;
>  		interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
>  		clocks = <&cru HCLK_USB2HOST1>, <&cru HCLK_USB2HOST1_ARB>,
> -			 <&cru PCLK_USB>;
> +			 <&cru PCLK_USB>, <&usb2phy1>;
>  		phys = <&usb2phy1_host>;
>  		phy-names = "usb";
>  		status = "disabled";
>  	};
>  
>  	usb_host1_ohci: usb@fd8c0000 {
> -		compatible = "generic-ohci";
> +		compatible = "rockchip,rk3568-ohci", "generic-ohci";
>  		reg = <0x0 0xfd8c0000 0x0 0x40000>;
>  		interrupts = <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>;
>  		clocks = <&cru HCLK_USB2HOST1>, <&cru HCLK_USB2HOST1_ARB>,
> -			 <&cru PCLK_USB>;
> +			 <&cru PCLK_USB>, <&usb2phy1>;
>  		phys = <&usb2phy1_host>;
>  		phy-names = "usb";
>  		status = "disabled";