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[v5,1/2] dt-bindings: phy: Add i.MX8Q HSIO SerDes PHY binding

Message ID 1715563324-6391-2-git-send-email-hongxing.zhu@nxp.com
State Changes Requested
Headers show
Series Add i.MX8Q HSIO PHY support | expand

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Commit Message

Richard Zhu May 13, 2024, 1:22 a.m. UTC 
Add i.MX8QM and i.MX8QXP HSIO SerDes PHY binding.
Introduce one HSIO configuration 'fsl,hsio-cfg', which need be set at
initialization according to board design.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
 .../bindings/phy/fsl,imx8qm-hsio.yaml         | 152 ++++++++++++++++++
 include/dt-bindings/phy/phy-imx8-pcie.h       |  29 ++++
 2 files changed, 181 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/fsl,imx8qm-hsio.yaml

Comments

Conor Dooley May 13, 2024, 4:01 p.m. UTC | #1 
On Mon, May 13, 2024 at 09:22:03AM +0800, Richard Zhu wrote:

> +  fsl,hsio-cfg:
> +    description:
> +      Specifies the use case of the HSIO module in the hardware design.
> +      Because the HSIO module can be configure into three different use
> +      cases.
> +      Refer to macro HSIO_CFG* of include/dt-bindings/phy/phy-imx8-pcie.h.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    maximum: 3

> +/*
> + * Regarding the design of i.MX8QM HSIO subsystem, HSIO module can be
> + * confiured as following three use cases.
> + *
> + * Define different configurations refer to the use cases, since it is
> + * mandatory required in the initialization.
> + *
> + * On i.MX8QXP, HSIO module only has PCIEB and one lane PHY.
> + * Define "IMX8Q_HSIO_CFG_PCIEB" for i.MX8QXP platforms.
> + *
> + * +----------------------------------------------------+----------+
> + * |                               | i.MX8QM            | i.MX8QXP |
> + * |-------------------------------|--------------------|----------|
> + * |                               | Lane0| Lane1| Lane2| Lane0    |
> + * |-------------------------------|------|------|------|----------|
> + * | IMX8Q_HSIO_CFG_PCIEAX2SATA    | PCIEA| PCIEA| SATA |          |
> + * |-------------------------------|------|------|------|----------|
> + * | IMX8Q_HSIO_CFG_PCIEAX2PCIEB   | PCIEA| PCIEA| PCIEB|          |
> + * |-------------------------------|------|------|------|----------|
> + * | IMX8Q_HSIO_CFG_PCIEAPCIEBSATA | PCIEA| PCIEB| SATA |          |
> + * |-------------------------------|------|------|------|----------|
> + * | IMX8Q_HSIO_CFG_PCIEB          | -    | -    | -    | PCIEB    |
> + * +----------------------------------------------------+----------+
> + */
> +#define IMX8Q_HSIO_CFG_PCIEAX2SATA	0x1
> +#define IMX8Q_HSIO_CFG_PCIEAX2PCIEB	0x2
> +#define IMX8Q_HSIO_CFG_PCIEAPCIEBSATA	(IMX8Q_HSIO_CFG_PCIEAX2SATA | IMX8Q_HSIO_CFG_PCIEAX2PCIEB)
> +#define IMX8Q_HSIO_CFG_PCIEB		IMX8Q_HSIO_CFG_PCIEAX2PCIEB

Rob may disagree with me, but I think this should be an enum of possible
strings with the table here moved into the property description. The QXP
only option should then be constrained per compatible.

> +
> +  fsl,refclk-pad-mode:
> +    description:
> +      Specifies the mode of the refclk pad used. INPUT(PHY refclock is
> +      provided externally via the refclk pad) or OUTPUT(PHY refclock is
> +      derived from SoC internal source and provided on the refclk pad).

> +      This property not exsit means unused(PHY refclock is derived from

Please run a spell checker on your patches.

> +      SoC internal source).

> +    $ref: /schemas/types.yaml#/definitions/string
> +    enum: [ input, output ]

enum: [input, output, unused]
default: unused

Cheers,
Conor.
Richard Zhu May 14, 2024, 1:54 a.m. UTC | #2 
> -----Original Message-----
> From: Conor Dooley <conor@kernel.org>
> Sent: 2024年5月14日 0:02
> To: Hongxing Zhu <hongxing.zhu@nxp.com>
> Cc: vkoul@kernel.org; kishon@kernel.org; robh+dt@kernel.org;
> krzysztof.kozlowski+dt@linaro.org; Frank Li <frank.li@nxp.com>;
> conor+dt@kernel.org; linux-phy@lists.infradead.org; devicetree@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> kernel@pengutronix.de; imx@lists.linux.dev
> Subject: Re: [PATCH v5 1/2] dt-bindings: phy: Add i.MX8Q HSIO SerDes PHY
> binding
> 
> On Mon, May 13, 2024 at 09:22:03AM +0800, Richard Zhu wrote:
> 
> > +  fsl,hsio-cfg:
> > +    description:
> > +      Specifies the use case of the HSIO module in the hardware design.
> > +      Because the HSIO module can be configure into three different use
> > +      cases.
> > +      Refer to macro HSIO_CFG* of
> include/dt-bindings/phy/phy-imx8-pcie.h.
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    maximum: 3
> 
> > +/*
> > + * Regarding the design of i.MX8QM HSIO subsystem, HSIO module can be
> > + * confiured as following three use cases.
> > + *
> > + * Define different configurations refer to the use cases, since it
> > +is
> > + * mandatory required in the initialization.
> > + *
> > + * On i.MX8QXP, HSIO module only has PCIEB and one lane PHY.
> > + * Define "IMX8Q_HSIO_CFG_PCIEB" for i.MX8QXP platforms.
> > + *
> > + * +----------------------------------------------------+----------+
> > + * |                               | i.MX8QM            | i.MX8QXP
> |
> > + * |-------------------------------|--------------------|----------|
> > + * |                               | Lane0| Lane1| Lane2| Lane0    |
> > + * |-------------------------------|------|------|------|----------|
> > + * | IMX8Q_HSIO_CFG_PCIEAX2SATA    | PCIEA| PCIEA| SATA |
> |
> > + * |-------------------------------|------|------|------|----------|
> > + * | IMX8Q_HSIO_CFG_PCIEAX2PCIEB   | PCIEA| PCIEA| PCIEB|
> |
> > + * |-------------------------------|------|------|------|----------|
> > + * | IMX8Q_HSIO_CFG_PCIEAPCIEBSATA | PCIEA| PCIEB| SATA |          |
> > + * |-------------------------------|------|------|------|----------|
> > + * | IMX8Q_HSIO_CFG_PCIEB          | -    | -    | -    | PCIEB    |
> > + * +----------------------------------------------------+----------+
> > + */
> > +#define IMX8Q_HSIO_CFG_PCIEAX2SATA	0x1
> > +#define IMX8Q_HSIO_CFG_PCIEAX2PCIEB	0x2
> > +#define IMX8Q_HSIO_CFG_PCIEAPCIEBSATA
> 	(IMX8Q_HSIO_CFG_PCIEAX2SATA | IMX8Q_HSIO_CFG_PCIEAX2PCIEB)
> > +#define IMX8Q_HSIO_CFG_PCIEB		IMX8Q_HSIO_CFG_PCIEAX2PCIEB
> 
> Rob may disagree with me, but I think this should be an enum of possible strings
> with the table here moved into the property description. The QXP only option
> should then be constrained per compatible.
> 
If this property is an enum of possible strings. There would be three if()
 checks to parse the possible string in driver.
I'm fine with that.

Hi Rob:
How do you think about that?
> > +
> > +  fsl,refclk-pad-mode:
> > +    description:
> > +      Specifies the mode of the refclk pad used. INPUT(PHY refclock is
> > +      provided externally via the refclk pad) or OUTPUT(PHY refclock is
> > +      derived from SoC internal source and provided on the refclk pad).
> 
> > +      This property not exsit means unused(PHY refclock is derived
> > + from
> 
> Please run a spell checker on your patches.
> 
Sorry, It's my fault. There is a spell mistake.
s/exsit/exists/
Thanks.
> > +      SoC internal source).
> 
> > +    $ref: /schemas/types.yaml#/definitions/string
> > +    enum: [ input, output ]
> 
> enum: [input, output, unused]
> default: unused
Okay

Best Regards
Richard
> 
> Cheers,
> Conor.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8qm-hsio.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8qm-hsio.yaml
new file mode 100644
index 000000000000..de0276f05122
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/fsl,imx8qm-hsio.yaml
@@ -0,0 +1,152 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/fsl,imx8qm-hsio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8QM SoC series High Speed IO(HSIO) SERDES PHY
+
+maintainers:
+  - Richard Zhu <hongxing.zhu@nxp.com>
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx8qm-hsio
+      - fsl,imx8qxp-hsio
+  reg:
+    items:
+      - description: Base address and length of the PHY block
+      - description: HSIO control and status registers(CSR) of the PHY
+      - description: HSIO CSR of the controller bound to the PHY
+      - description: HSIO CSR for MISC
+
+  reg-names:
+    items:
+      - const: reg
+      - const: phy
+      - const: ctrl
+      - const: misc
+
+  "#phy-cells":
+    const: 3
+    description:
+      The first defines lane index.
+      The second defines the type of the PHY refer to the include phy.h.
+      The third defines the controller index, indicated which controller
+      is bound to the lane.
+
+  clocks:
+    minItems: 5
+    maxItems: 14
+
+  clock-names:
+    minItems: 5
+    maxItems: 14
+
+  fsl,hsio-cfg:
+    description:
+      Specifies the use case of the HSIO module in the hardware design.
+      Because the HSIO module can be configure into three different use
+      cases.
+      Refer to macro HSIO_CFG* of include/dt-bindings/phy/phy-imx8-pcie.h.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 3
+
+  fsl,refclk-pad-mode:
+    description:
+      Specifies the mode of the refclk pad used. INPUT(PHY refclock is
+      provided externally via the refclk pad) or OUTPUT(PHY refclock is
+      derived from SoC internal source and provided on the refclk pad).
+      This property not exsit means unused(PHY refclock is derived from
+      SoC internal source).
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [ input, output ]
+
+  power-domains:
+    minItems: 1
+    maxItems: 2
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - "#phy-cells"
+  - clocks
+  - clock-names
+  - fsl,hsio-cfg
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx8qxp-hsio
+    then:
+      properties:
+        clock-names:
+          items:
+            - const: pclk0
+            - const: apb_pclk0
+            - const: phy0_crr
+            - const: ctl0_crr
+            - const: misc_crr
+        power-domains:
+          maxItems: 1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx8qm-hsio
+    then:
+      properties:
+        clock-names:
+          items:
+            - const: pclk0
+            - const: pclk1
+            - const: apb_pclk0
+            - const: apb_pclk1
+            - const: pclk2
+            - const: epcs_tx
+            - const: epcs_rx
+            - const: apb_pclk2
+            - const: phy0_crr
+            - const: phy1_crr
+            - const: ctl0_crr
+            - const: ctl1_crr
+            - const: ctl2_crr
+            - const: misc_crr
+        power-domains:
+          minItems: 2
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8-clock.h>
+    #include <dt-bindings/clock/imx8-lpcg.h>
+    #include <dt-bindings/firmware/imx/rsrc.h>
+    #include <dt-bindings/phy/phy-imx8-pcie.h>
+
+    phy@5f1a0000 {
+        compatible = "fsl,imx8qxp-hsio";
+        reg = <0x5f1a0000 0x10000>,
+              <0x5f120000 0x10000>,
+              <0x5f140000 0x10000>,
+              <0x5f160000 0x10000>;
+        reg-names = "reg", "phy", "ctrl", "misc";
+        clocks = <&phyx1_lpcg IMX_LPCG_CLK_0>,
+                 <&phyx1_lpcg IMX_LPCG_CLK_4>,
+                 <&phyx1_crr1_lpcg IMX_LPCG_CLK_4>,
+                 <&pcieb_crr3_lpcg IMX_LPCG_CLK_4>,
+                 <&misc_crr5_lpcg IMX_LPCG_CLK_4>;
+        clock-names = "pclk0", "apb_pclk0", "phy0_crr", "ctl0_crr", "misc_crr";
+        power-domains = <&pd IMX_SC_R_SERDES_1>;
+        #phy-cells = <3>;
+        fsl,hsio-cfg = <IMX8Q_HSIO_CFG_PCIEB>;
+        fsl,refclk-pad-mode = "input";
+    };
+...
diff --git a/include/dt-bindings/phy/phy-imx8-pcie.h b/include/dt-bindings/phy/phy-imx8-pcie.h
index 8bbe2d6538d8..8f65a77fca09 100644
--- a/include/dt-bindings/phy/phy-imx8-pcie.h
+++ b/include/dt-bindings/phy/phy-imx8-pcie.h
@@ -11,4 +11,33 @@ 
 #define IMX8_PCIE_REFCLK_PAD_INPUT	1
 #define IMX8_PCIE_REFCLK_PAD_OUTPUT	2
 
+/*
+ * Regarding the design of i.MX8QM HSIO subsystem, HSIO module can be
+ * confiured as following three use cases.
+ *
+ * Define different configurations refer to the use cases, since it is
+ * mandatory required in the initialization.
+ *
+ * On i.MX8QXP, HSIO module only has PCIEB and one lane PHY.
+ * Define "IMX8Q_HSIO_CFG_PCIEB" for i.MX8QXP platforms.
+ *
+ * +----------------------------------------------------+----------+
+ * |                               | i.MX8QM            | i.MX8QXP |
+ * |-------------------------------|--------------------|----------|
+ * |                               | Lane0| Lane1| Lane2| Lane0    |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEAX2SATA    | PCIEA| PCIEA| SATA |          |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEAX2PCIEB   | PCIEA| PCIEA| PCIEB|          |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEAPCIEBSATA | PCIEA| PCIEB| SATA |          |
+ * |-------------------------------|------|------|------|----------|
+ * | IMX8Q_HSIO_CFG_PCIEB          | -    | -    | -    | PCIEB    |
+ * +----------------------------------------------------+----------+
+ */
+#define IMX8Q_HSIO_CFG_PCIEAX2SATA	0x1
+#define IMX8Q_HSIO_CFG_PCIEAX2PCIEB	0x2
+#define IMX8Q_HSIO_CFG_PCIEAPCIEBSATA	(IMX8Q_HSIO_CFG_PCIEAX2SATA | IMX8Q_HSIO_CFG_PCIEAX2PCIEB)
+#define IMX8Q_HSIO_CFG_PCIEB		IMX8Q_HSIO_CFG_PCIEAX2PCIEB
+
 #endif /* _DT_BINDINGS_IMX8_PCIE_H */