linux-kernel - [PATCH net-next v2 3/4] dt-bindings: net: Add RGMII internal delay for DP83869

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Message-ID: <20200520121835.31190-4-dmurphy@ti.com>
Date:   Wed, 20 May 2020 07:18:34 -0500
From:   Dan Murphy <dmurphy@...com>
To:     <andrew@...n.ch>, <f.fainelli@...il.com>, <hkallweit1@...il.com>,
        <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, Dan Murphy <dmurphy@...com>
Subject: [PATCH net-next v2 3/4] dt-bindings: net: Add RGMII internal delay for DP83869

Add the internal delay values into the header and update the binding
with the internal delay properties.

Signed-off-by: Dan Murphy <dmurphy@...com>
---
 .../devicetree/bindings/net/ti,dp83869.yaml    | 16 ++++++++++++++++
 include/dt-bindings/net/ti-dp83869.h           | 18 ++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ti,dp83869.yaml b/Documentation/devicetree/bindings/net/ti,dp83869.yaml
index 5b69ef03bbf7..344015ab9081 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83869.yaml
+++ b/Documentation/devicetree/bindings/net/ti,dp83869.yaml
@@ -64,6 +64,20 @@ properties:
        Operational mode for the PHY.  If this is not set then the operational
        mode is set by the straps. see dt-bindings/net/ti-dp83869.h for values
 
+  ti,rx-internal-delay:
+    $ref: /schemas/types.yaml#definitions/uint32
+    description: |
+      RGMII Receive Clock Delay - see dt-bindings/net/ti-dp83869.h
+      for applicable values. Required only if interface type is
+      PHY_INTERFACE_MODE_RGMII_ID or PHY_INTERFACE_MODE_RGMII_RXID.
+
+  ti,tx-internal-delay:
+    $ref: /schemas/types.yaml#definitions/uint32
+    description: |
+      RGMII Transmit Clock Delay - see dt-bindings/net/ti-dp83869.h
+      for applicable values. Required only if interface type is
+      PHY_INTERFACE_MODE_RGMII_ID or PHY_INTERFACE_MODE_RGMII_TXID.
+
 required:
   - reg
 
@@ -80,5 +94,7 @@ examples:
         ti,op-mode = <DP83869_RGMII_COPPER_ETHERNET>;
         ti,max-output-impedance = "true";
         ti,clk-output-sel = <DP83869_CLK_O_SEL_CHN_A_RCLK>;
+        ti,rx-internal-delay = <DP83869_RGMIIDCTL_2_25_NS>;
+        ti,tx-internal-delay = <DP83869_RGMIIDCTL_2_75_NS>;
       };
     };
diff --git a/include/dt-bindings/net/ti-dp83869.h b/include/dt-bindings/net/ti-dp83869.h
index 218b1a64e975..77d104a40f1f 100644
--- a/include/dt-bindings/net/ti-dp83869.h
+++ b/include/dt-bindings/net/ti-dp83869.h
@@ -16,6 +16,24 @@
 #define DP83869_PHYCR_FIFO_DEPTH_6_B_NIB	0x02
 #define DP83869_PHYCR_FIFO_DEPTH_8_B_NIB	0x03
 
+/* RGMIIDCTL internal delay for rx and tx */
+#define	DP83869_RGMIIDCTL_250_PS	0x0
+#define	DP83869_RGMIIDCTL_500_PS	0x1
+#define	DP83869_RGMIIDCTL_750_PS	0x2
+#define	DP83869_RGMIIDCTL_1_NS		0x3
+#define	DP83869_RGMIIDCTL_1_25_NS	0x4
+#define	DP83869_RGMIIDCTL_1_50_NS	0x5
+#define	DP83869_RGMIIDCTL_1_75_NS	0x6
+#define	DP83869_RGMIIDCTL_2_00_NS	0x7
+#define	DP83869_RGMIIDCTL_2_25_NS	0x8
+#define	DP83869_RGMIIDCTL_2_50_NS	0x9
+#define	DP83869_RGMIIDCTL_2_75_NS	0xa
+#define	DP83869_RGMIIDCTL_3_00_NS	0xb
+#define	DP83869_RGMIIDCTL_3_25_NS	0xc
+#define	DP83869_RGMIIDCTL_3_50_NS	0xd
+#define	DP83869_RGMIIDCTL_3_75_NS	0xe
+#define	DP83869_RGMIIDCTL_4_00_NS	0xf
+
 /* IO_MUX_CFG - Clock output selection */
 #define DP83869_CLK_O_SEL_CHN_A_RCLK		0x0
 #define DP83869_CLK_O_SEL_CHN_B_RCLK		0x1
-- 
2.26.2