linux-kernel - [PATCH v2 02/12] dt-bindings: phy: tegra20-usb-phy: Document properties needed for OTG mode

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Message-Id: <20210701234317.26393-3-digetx@gmail.com>
Date:   Fri,  2 Jul 2021 02:43:07 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <treding@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sebastian Reichel <sre@...nel.org>,
        Peter Chen <peter.chen@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>,
        David Heidelberg <david@...t.cz>
Cc:     devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH v2 02/12] dt-bindings: phy: tegra20-usb-phy: Document properties needed for OTG mode

In order to support OTG mode we need these new properties:

	- interrupt
	- nvidia,pmc
	- nvidia,phy-instance

The nvidia,phy-instance isn't strictly needed for the OTG mode since we
know that only first controller supports it in practice, but it will be
needed in general for supporting more complex hardware features that
require knowledge of the PHY offset within common registers of the Power
Management controller (PMC).

Add the new properties to the bindings.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 .../bindings/phy/nvidia,tegra20-usb-phy.yaml  | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.yaml b/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.yaml
index 593187234e6a..a108f1552042 100644
--- a/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.yaml
@@ -77,6 +77,9 @@ properties:
           - const: timer
           - const: utmi-pads
 
+  interrupts:
+    maxItems: 1
+
   resets:
     oneOf:
       - maxItems: 1
@@ -199,6 +202,17 @@ properties:
     maxItems: 1
     description: GPIO used to reset the PHY.
 
+  nvidia,pmc:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to Power Management controller.
+
+  nvidia,phy-instance:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 2
+    description: Unique hardware ID.
+
 required:
   - compatible
   - reg
@@ -320,6 +334,7 @@ examples:
         compatible = "nvidia,tegra124-usb-phy", "nvidia,tegra30-usb-phy";
         reg = <0x7d008000 0x4000>,
               <0x7d000000 0x4000>;
+        interrupts = <0 97 4>;
         phy_type = "utmi";
         clocks = <&tegra_car TEGRA124_CLK_USB3>,
                  <&tegra_car TEGRA124_CLK_PLL_U>,
@@ -338,6 +353,8 @@ examples:
         nvidia,hssquelch-level = <2>;
         nvidia,hsdiscon-level = <5>;
         nvidia,xcvr-hsslew = <12>;
+        nvidia,pmc = <&tegra_pmc>;
+        nvidia,phy-instance= <2>;
     };
 
   - |
@@ -346,6 +363,7 @@ examples:
     usb-phy@...04000 {
         compatible = "nvidia,tegra20-usb-phy";
         reg = <0xc5004000 0x4000>;
+        interrupts = <0 21 4>;
         phy_type = "ulpi";
         clocks = <&tegra_car TEGRA20_CLK_USB2>,
                  <&tegra_car TEGRA20_CLK_PLL_U>,
@@ -354,4 +372,6 @@ examples:
         resets = <&tegra_car 58>, <&tegra_car 22>;
         reset-names = "usb", "utmi-pads";
         #phy-cells = <0>;
+        nvidia,pmc = <&tegra_pmc>;
+        nvidia,phy-instance= <1>;
     };
-- 
2.30.2