diff mbox series

[RESEND,1/2] dt-bindings: phy: mediatek,xsphy: add property to set disconnect threshold

Message ID 20250111141542.5007-1-chunfeng.yun@mediatek.com
State Superseded
Headers show
Series [RESEND,1/2] dt-bindings: phy: mediatek,xsphy: add property to set disconnect threshold | expand

Commit Message

Chunfeng Yun Jan. 11, 2025, 2:15 p.m. UTC
Add a property to tune usb2 phy's disconnect threshold.
And add a compatible for mt8196.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
based on kernel 6.13-rc1

this property is porting from t-phy driver, due to the u2 phy are similar.
---
 Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

AngeloGioacchino Del Regno Jan. 13, 2025, 12:43 p.m. UTC | #1
Il 11/01/25 15:15, Chunfeng Yun ha scritto:
> Add a property to tune usb2 phy's disconnect threshold.
> And add a compatible for mt8196.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

> ---
> based on kernel 6.13-rc1
> 
> this property is porting from t-phy driver, due to the u2 phy are similar.
> ---
>   Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml | 8 ++++++++
>   1 file changed, 8 insertions(+)
>
Conor Dooley Jan. 13, 2025, 6:30 p.m. UTC | #2
On Sat, Jan 11, 2025 at 10:15:41PM +0800, Chunfeng Yun wrote:
> Add a property to tune usb2 phy's disconnect threshold.
> And add a compatible for mt8196.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> ---
> based on kernel 6.13-rc1
> 
> this property is porting from t-phy driver, due to the u2 phy are similar.
> ---
>  Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> index a9e3139fd421..2e012d5e1da1 100644
> --- a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> +++ b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> @@ -49,6 +49,7 @@ properties:
>        - enum:
>            - mediatek,mt3611-xsphy
>            - mediatek,mt3612-xsphy
> +          - mediatek,mt8196-xsphy
>        - const: mediatek,xsphy
>  
>    reg:
> @@ -129,6 +130,13 @@ patternProperties:
>          minimum: 1
>          maximum: 7
>  
> +      mediatek,discth:
> +        description:
> +          The selection of disconnect threshold (U2 phy)
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +        minimum: 1
> +        maximum: 15

What unit is this? Unitless? How are the values determined?

> +
>        mediatek,efuse-intr:
>          description:
>            The selection of Internal Resistor (U2/U3 phy)
> -- 
> 2.46.0
>
Chunfeng Yun Feb. 9, 2025, 3:34 a.m. UTC | #3
On Mon, 2025-01-13 at 18:30 +0000, Conor Dooley wrote:
> On Sat, Jan 11, 2025 at 10:15:41PM +0800, Chunfeng Yun wrote:
> > Add a property to tune usb2 phy's disconnect threshold.
> > And add a compatible for mt8196.
> > 
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> > ---
> > based on kernel 6.13-rc1
> > 
> > this property is porting from t-phy driver, due to the u2 phy are
> > similar.
> > ---
> >  Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml | 8
> > ++++++++
> >  1 file changed, 8 insertions(+)
> > 
> > diff --git
> > a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > index a9e3139fd421..2e012d5e1da1 100644
> > --- a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > +++ b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > @@ -49,6 +49,7 @@ properties:
> >        - enum:
> >            - mediatek,mt3611-xsphy
> >            - mediatek,mt3612-xsphy
> > +          - mediatek,mt8196-xsphy
> >        - const: mediatek,xsphy
> >  
> >    reg:
> > @@ -129,6 +130,13 @@ patternProperties:
> >          minimum: 1
> >          maximum: 7
> >  
> > +      mediatek,discth:
> > +        description:
> > +          The selection of disconnect threshold (U2 phy)
> > +        $ref: /schemas/types.yaml#/definitions/uint32
> > +        minimum: 1
> > +        maximum: 15
> 
> What unit is this? Unitless? How are the values determined?
No unit, it's a level, may be treat it as an index to select different
threshold.

Thanks
> 
> > +
> >        mediatek,efuse-intr:
> >          description:
> >            The selection of Internal Resistor (U2/U3 phy)
> > -- 
> > 2.46.0
> >
Conor Dooley Feb. 11, 2025, 6:30 p.m. UTC | #4
On Sun, Feb 09, 2025 at 03:34:12AM +0000, Chunfeng Yun (云春峰) wrote:
> On Mon, 2025-01-13 at 18:30 +0000, Conor Dooley wrote:
> > On Sat, Jan 11, 2025 at 10:15:41PM +0800, Chunfeng Yun wrote:
> > > Add a property to tune usb2 phy's disconnect threshold.
> > > And add a compatible for mt8196.
> > > 
> > > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
> > > ---
> > > based on kernel 6.13-rc1
> > > 
> > > this property is porting from t-phy driver, due to the u2 phy are
> > > similar.
> > > ---
> > >  Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml | 8
> > > ++++++++
> > >  1 file changed, 8 insertions(+)
> > > 
> > > diff --git
> > > a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > > b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > > index a9e3139fd421..2e012d5e1da1 100644
> > > --- a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > > +++ b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> > > @@ -49,6 +49,7 @@ properties:
> > >        - enum:
> > >            - mediatek,mt3611-xsphy
> > >            - mediatek,mt3612-xsphy
> > > +          - mediatek,mt8196-xsphy
> > >        - const: mediatek,xsphy
> > >  
> > >    reg:
> > > @@ -129,6 +130,13 @@ patternProperties:
> > >          minimum: 1
> > >          maximum: 7
> > >  
> > > +      mediatek,discth:

Just make it "disconnect-threshold" please.

> > > +        description:
> > > +          The selection of disconnect threshold (U2 phy)
> > > +        $ref: /schemas/types.yaml#/definitions/uint32
> > > +        minimum: 1
> > > +        maximum: 15
> > 
> > What unit is this? Unitless? How are the values determined?
> No unit, it's a level, may be treat it as an index to select different
> threshold.

So this is a register value of some sort? What is the actual threshold
measured in?
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
index a9e3139fd421..2e012d5e1da1 100644
--- a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
+++ b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
@@ -49,6 +49,7 @@  properties:
       - enum:
           - mediatek,mt3611-xsphy
           - mediatek,mt3612-xsphy
+          - mediatek,mt8196-xsphy
       - const: mediatek,xsphy
 
   reg:
@@ -129,6 +130,13 @@  patternProperties:
         minimum: 1
         maximum: 7
 
+      mediatek,discth:
+        description:
+          The selection of disconnect threshold (U2 phy)
+        $ref: /schemas/types.yaml#/definitions/uint32
+        minimum: 1
+        maximum: 15
+
       mediatek,efuse-intr:
         description:
           The selection of Internal Resistor (U2/U3 phy)