diff mbox series

[v6,1/7] dt-binding: phy: Add iMX8MP PCIe PHY binding

Message ID 1662004960-14071-2-git-send-email-hongxing.zhu@nxp.com (mailing list archive)
State Superseded
Headers show
Series Add the iMX8MP PCIe support | expand

Commit Message

Hongxing Zhu Sept. 1, 2022, 4:02 a.m. UTC 
Add i.MX8MP PCIe PHY binding.
On iMX8MM, the initialized default value of PERST bit(BIT3) of
SRC_PCIEPHY_RCR is 1b'1.
But i.MX8MP has one inversed default value 1b'0 of PERST bit.

And the PERST bit should be kept 1b'1 after power and clocks are stable.
So add one more PERST explicitly for i.MX8MP PCIe PHY.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Tested-by: Marek Vasut <marex@denx.de>
Tested-by: Richard Leitner <richard.leitner@skidata.com>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
 .../bindings/phy/fsl,imx8-pcie-phy.yaml          | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

Comments

Lucas Stach Sept. 2, 2022, 8:32 a.m. UTC | #1 
Am Donnerstag, dem 01.09.2022 um 12:02 +0800 schrieb Richard Zhu:
> Add i.MX8MP PCIe PHY binding.
> On iMX8MM, the initialized default value of PERST bit(BIT3) of
> SRC_PCIEPHY_RCR is 1b'1.
> But i.MX8MP has one inversed default value 1b'0 of PERST bit.
> 
> And the PERST bit should be kept 1b'1 after power and clocks are stable.
> So add one more PERST explicitly for i.MX8MP PCIe PHY.
> 
> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
> Tested-by: Marek Vasut <marex@denx.de>
> Tested-by: Richard Leitner <richard.leitner@skidata.com>
> Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

> ---
>  .../bindings/phy/fsl,imx8-pcie-phy.yaml          | 16 +++++++++++++---
>  1 file changed, 13 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml
> index b6421eedece3..692783c7fd69 100644
> --- a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml
> @@ -16,6 +16,7 @@ properties:
>    compatible:
>      enum:
>        - fsl,imx8mm-pcie-phy
> +      - fsl,imx8mp-pcie-phy
>  
>    reg:
>      maxItems: 1
> @@ -28,11 +29,16 @@ properties:
>        - const: ref
>  
>    resets:
> -    maxItems: 1
> +    minItems: 1
> +    maxItems: 2
>  
>    reset-names:
> -    items:
> -      - const: pciephy
> +    oneOf:
> +      - items:          # for iMX8MM
> +          - const: pciephy
> +      - items:          # for IMX8MP
> +          - const: pciephy
> +          - const: perst
>  
>    fsl,refclk-pad-mode:
>      description: |
> @@ -60,6 +66,10 @@ properties:
>      description: A boolean property indicating the CLKREQ# signal is
>        not supported in the board design (optional)
>  
> +  power-domains:
> +    description: PCIe PHY  power domain (optional).
> +    maxItems: 1
> +
>  required:
>    - "#phy-cells"
>    - compatible
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml
index b6421eedece3..692783c7fd69 100644
--- a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml
@@ -16,6 +16,7 @@  properties:
   compatible:
     enum:
       - fsl,imx8mm-pcie-phy
+      - fsl,imx8mp-pcie-phy
 
   reg:
     maxItems: 1
@@ -28,11 +29,16 @@  properties:
       - const: ref
 
   resets:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   reset-names:
-    items:
-      - const: pciephy
+    oneOf:
+      - items:          # for iMX8MM
+          - const: pciephy
+      - items:          # for IMX8MP
+          - const: pciephy
+          - const: perst
 
   fsl,refclk-pad-mode:
     description: |
@@ -60,6 +66,10 @@  properties:
     description: A boolean property indicating the CLKREQ# signal is
       not supported in the board design (optional)
 
+  power-domains:
+    description: PCIe PHY  power domain (optional).
+    maxItems: 1
+
 required:
   - "#phy-cells"
   - compatible