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[PATCH v2 1/2] dt-bindings: phy: Add Rockchip MIPI CSI/DSI PHY schema

Heiko Stuebner posted 2 patches 1 year, 3 months ago
There is a newer version of this series
[PATCH v2 1/2] dt-bindings: phy: Add Rockchip MIPI CSI/DSI PHY schema
Posted by Heiko Stuebner 1 year, 3 months ago 
From: Heiko Stuebner <heiko.stuebner@cherry.de>

Add dt-binding schema for the MIPI CSI/DSI PHY found on
Rockchip RK3588 SoCs.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
---
 .../phy/rockchip,rk3588-mipi-dcphy.yaml       | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml

diff --git a/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
new file mode 100644
index 000000000000..5ee8d7246fa0
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/rockchip,rk3588-mipi-dcphy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip MIPI CSI/DSI PHY with Samsung IP block
+
+maintainers:
+  - Guochun Huang <hero.huang@rock-chips.com>
+  - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rk3576-mipi-dcphy
+      - rockchip,rk3588-mipi-dcphy
+
+  reg:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: ref
+
+  resets:
+    maxItems: 4
+
+  reset-names:
+    items:
+      - const: m_phy
+      - const: apb
+      - const: grf
+      - const: s_phy
+
+  rockchip,grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the syscon managing the 'mipi dcphy general register files'.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
+    #include <dt-bindings/reset/rockchip,rk3588-cru.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      phy@feda0000 {
+        compatible = "rockchip,rk3588-mipi-dcphy";
+        reg = <0x0 0xfeda0000 0x0 0x10000>;
+        clocks = <&cru PCLK_MIPI_DCPHY0>,
+                 <&cru CLK_USBDPPHY_MIPIDCPPHY_REF>;
+        clock-names = "pclk", "ref";
+        resets = <&cru SRST_M_MIPI_DCPHY0>,
+                 <&cru SRST_P_MIPI_DCPHY0>,
+                 <&cru SRST_P_MIPI_DCPHY0_GRF>,
+                 <&cru SRST_S_MIPI_DCPHY0>;
+        reset-names = "m_phy", "apb", "grf", "s_phy";
+        rockchip,grf = <&mipidcphy0_grf>;
+        #phy-cells = <0>;
+      };
+    };
-- 
2.45.2
Re: [PATCH v2 1/2] dt-bindings: phy: Add Rockchip MIPI CSI/DSI PHY schema
Posted by Diederik de Haas 1 year, 3 months ago 
Hi,

On Mon Nov 4, 2024 at 12:11 PM CET, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@cherry.de>
>
> Add dt-binding schema for the MIPI CSI/DSI PHY found on
> Rockchip RK3588 SoCs.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
> ---
>  .../phy/rockchip,rk3588-mipi-dcphy.yaml       | 82 +++++++++++++++++++
>  1 file changed, 82 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
>
> diff --git a/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> new file mode 100644
> index 000000000000..5ee8d7246fa0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> @@ -0,0 +1,82 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/rockchip,rk3588-mipi-dcphy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip MIPI CSI/DSI PHY with Samsung IP block
> +
> +maintainers:
> +  - Guochun Huang <hero.huang@rock-chips.com>
> +  - Heiko Stuebner <heiko@sntech.de>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - rockchip,rk3576-mipi-dcphy
> +      - rockchip,rk3588-mipi-dcphy
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#phy-cells":
> +    const: 0
> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: pclk
> +      - const: ref
> +
> +  resets:
> +    maxItems: 4
> +
> +  reset-names:
> +    items:
> +      - const: m_phy
> +      - const: apb
> +      - const: grf
> +      - const: s_phy
> +
> +  rockchip,grf:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Phandle to the syscon managing the 'mipi dcphy general register files'.

Should this dt-binding have a power-domains property?
RK3588 TRM v1.0 part 1 page 1097 has ALIVE(PD_BUS) for
MIPI_DC_PHY0~MIPI_DC_PHY1

FTR: I made a similar remark on another patch sent by Heiko today. While
that was incorrect, I do think it's appropriate for this binding after
which it could also be added to the respective phy nodes in the dts(i)
file(s).

Cheers,
  Diederik

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - resets
> +  - reset-names
> +  - "#phy-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
> +    #include <dt-bindings/reset/rockchip,rk3588-cru.h>
> +
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      phy@feda0000 {
> +        compatible = "rockchip,rk3588-mipi-dcphy";
> +        reg = <0x0 0xfeda0000 0x0 0x10000>;
> +        clocks = <&cru PCLK_MIPI_DCPHY0>,
> +                 <&cru CLK_USBDPPHY_MIPIDCPPHY_REF>;
> +        clock-names = "pclk", "ref";
> +        resets = <&cru SRST_M_MIPI_DCPHY0>,
> +                 <&cru SRST_P_MIPI_DCPHY0>,
> +                 <&cru SRST_P_MIPI_DCPHY0_GRF>,
> +                 <&cru SRST_S_MIPI_DCPHY0>;
> +        reset-names = "m_phy", "apb", "grf", "s_phy";
> +        rockchip,grf = <&mipidcphy0_grf>;
> +        #phy-cells = <0>;
> +      };
> +    };
Re: [PATCH v2 1/2] dt-bindings: phy: Add Rockchip MIPI CSI/DSI PHY schema
Posted by Heiko Stübner 1 year, 2 months ago 
Hi,

Am Mittwoch, 6. November 2024, 15:17:02 CET schrieb Diederik de Haas:
> On Mon Nov 4, 2024 at 12:11 PM CET, Heiko Stuebner wrote:
> > From: Heiko Stuebner <heiko.stuebner@cherry.de>
> >
> > Add dt-binding schema for the MIPI CSI/DSI PHY found on
> > Rockchip RK3588 SoCs.
> >
> > Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
> > ---
> >  .../phy/rockchip,rk3588-mipi-dcphy.yaml       | 82 +++++++++++++++++++
> >  1 file changed, 82 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> > new file mode 100644
> > index 000000000000..5ee8d7246fa0
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml
> > @@ -0,0 +1,82 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/phy/rockchip,rk3588-mipi-dcphy.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Rockchip MIPI CSI/DSI PHY with Samsung IP block
> > +
> > +maintainers:
> > +  - Guochun Huang <hero.huang@rock-chips.com>
> > +  - Heiko Stuebner <heiko@sntech.de>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - rockchip,rk3576-mipi-dcphy
> > +      - rockchip,rk3588-mipi-dcphy
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  "#phy-cells":
> > +    const: 0
> > +
> > +  clocks:
> > +    maxItems: 2
> > +
> > +  clock-names:
> > +    items:
> > +      - const: pclk
> > +      - const: ref
> > +
> > +  resets:
> > +    maxItems: 4
> > +
> > +  reset-names:
> > +    items:
> > +      - const: m_phy
> > +      - const: apb
> > +      - const: grf
> > +      - const: s_phy
> > +
> > +  rockchip,grf:
> > +    $ref: /schemas/types.yaml#/definitions/phandle
> > +    description:
> > +      Phandle to the syscon managing the 'mipi dcphy general register files'.
> 
> Should this dt-binding have a power-domains property?
> RK3588 TRM v1.0 part 1 page 1097 has ALIVE(PD_BUS) for
> MIPI_DC_PHY0~MIPI_DC_PHY1

I don't think so. As you write, the dcphy is part of the PD_BUS(ALIVE)
power-domain on at least rk3588 and the new rk3576.

This power-domain is actually non-controllable and also contains things
like the main GIC - so will be always on.

And for that reason probably, that domain also is not even exposed
in the rk3588 devicetree (nor the driver implementation).

Similarly the hdptx phy binding (in a similar situation) also does not
handle a power-domain. So my thinking is, we'll stay like this for now.


Heiko

> FTR: I made a similar remark on another patch sent by Heiko today. While
> that was incorrect, I do think it's appropriate for this binding after
> which it could also be added to the respective phy nodes in the dts(i)
> file(s).
> 
> Cheers,
>   Diederik
> 
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - clock-names
> > +  - resets
> > +  - reset-names
> > +  - "#phy-cells"
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
> > +    #include <dt-bindings/reset/rockchip,rk3588-cru.h>
> > +
> > +    soc {
> > +      #address-cells = <2>;
> > +      #size-cells = <2>;
> > +
> > +      phy@feda0000 {
> > +        compatible = "rockchip,rk3588-mipi-dcphy";
> > +        reg = <0x0 0xfeda0000 0x0 0x10000>;
> > +        clocks = <&cru PCLK_MIPI_DCPHY0>,
> > +                 <&cru CLK_USBDPPHY_MIPIDCPPHY_REF>;
> > +        clock-names = "pclk", "ref";
> > +        resets = <&cru SRST_M_MIPI_DCPHY0>,
> > +                 <&cru SRST_P_MIPI_DCPHY0>,
> > +                 <&cru SRST_P_MIPI_DCPHY0_GRF>,
> > +                 <&cru SRST_S_MIPI_DCPHY0>;
> > +        reset-names = "m_phy", "apb", "grf", "s_phy";
> > +        rockchip,grf = <&mipidcphy0_grf>;
> > +        #phy-cells = <0>;
> > +      };
> > +    };
> 
>
Re: [PATCH v2 1/2] dt-bindings: phy: Add Rockchip MIPI CSI/DSI PHY schema
Posted by Krzysztof Kozlowski 1 year, 3 months ago 
On Mon, Nov 04, 2024 at 12:11:15PM +0100, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@cherry.de>
> 
> Add dt-binding schema for the MIPI CSI/DSI PHY found on
> Rockchip RK3588 SoCs.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
> ---
>  .../phy/rockchip,rk3588-mipi-dcphy.yaml       | 82 +++++++++++++++++++
>  1 file changed, 82 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/rockchip,rk3588-mipi-dcphy.yaml

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Patchew 2.1-devel-b67e4c2

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