[U-Boot] [uboot][PATCH v3 1/2] net: phy: dp83867: Add device tree bindings and documentation

[Dan Murphy]

Add the device tree bindings and the accompanying documentation
for the TI DP83867 Giga bit ethernet phy driver.

The original document was from:
    [commit 2a10154abcb75ad0d7b6bfea6210ac743ec60897 from the Linux kernel]

Signed-off-by: Dan Murphy <dmurphy at ti.com>
---

v3 - Modify the binding to the kernel changed int -> internal for the delay - https://patchwork.ozlabs.org/patch/606595/

 doc/device-tree-bindings/net/ti,dp83867.txt | 29 ++++++++++++++++++++++++
 include/dt-bindings/net/ti-dp83867.h        | 35 +++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 doc/device-tree-bindings/net/ti,dp83867.txt
 create mode 100644 include/dt-bindings/net/ti-dp83867.h

diff --git a/doc/device-tree-bindings/net/ti,dp83867.txt b/doc/device-tree-bindings/net/ti,dp83867.txt
new file mode 100644
index 0000000..0ec009c
--- /dev/null
+++ b/doc/device-tree-bindings/net/ti,dp83867.txt
@@ -0,0 +1,29 @@
+* Texas Instruments - dp83867 Giga bit ethernet phy
+
+Required properties:
+	- ti,rx-internal-delay - RGMII Recieve Clock Delay - see dt-bindings/net/ti-dp83867.h
+		for applicable values
+	- ti,tx-internal-delay - RGMII Transmit Clock Delay - see dt-bindings/net/ti-dp83867.h
+		for applicable values
+	- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h
+		for applicable values
+
+Default child nodes are standard Ethernet PHY device
+nodes as described in doc/devicetree/bindings/net/ethernet.txt
+
+Example:
+
+&mac {
+	pinctrl-0 = <&davinci_mdio_default>;
+	pinctrl-1 = <&davinci_mdio_sleep>;
+	status = "okay";
+
+	ti,rx_internal_delay = <DP83867_RGMIIDCTL_1_50_NS>;
+	ti,tx_internal_delay = <DP83867_RGMIIDCTL_2_50_NS>;
+	ti,fifo_depth = <DP83867_PHYCR_FIFO_DEPTH_8_B_NIB>;
+
+};
+
+
+Datasheet can be found:
+http://www.ti.com/product/DP83867IR/datasheet
diff --git a/include/dt-bindings/net/ti-dp83867.h b/include/dt-bindings/net/ti-dp83867.h
new file mode 100644
index 0000000..5c592fb
--- /dev/null
+++ b/include/dt-bindings/net/ti-dp83867.h
@@ -0,0 +1,35 @@
+/*
+ * TI DP83867 PHY drivers
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ *
+ */
+
+#ifndef _DT_BINDINGS_TI_DP83867_H
+#define _DT_BINDINGS_TI_DP83867_H
+
+/* PHY CTRL bits */
+#define DP83867_PHYCR_FIFO_DEPTH_3_B_NIB	0x00
+#define DP83867_PHYCR_FIFO_DEPTH_4_B_NIB	0x01
+#define DP83867_PHYCR_FIFO_DEPTH_6_B_NIB	0x02
+#define DP83867_PHYCR_FIFO_DEPTH_8_B_NIB	0x03
+
+/* RGMIIDCTL internal delay for rx and tx */
+#define	DP83867_RGMIIDCTL_250_PS	0x0
+#define	DP83867_RGMIIDCTL_500_PS	0x1
+#define	DP83867_RGMIIDCTL_750_PS	0x2
+#define	DP83867_RGMIIDCTL_1_NS		0x3
+#define	DP83867_RGMIIDCTL_1_25_NS	0x4
+#define	DP83867_RGMIIDCTL_1_50_NS	0x5
+#define	DP83867_RGMIIDCTL_1_75_NS	0x6
+#define	DP83867_RGMIIDCTL_2_00_NS	0x7
+#define	DP83867_RGMIIDCTL_2_25_NS	0x8
+#define	DP83867_RGMIIDCTL_2_50_NS	0x9
+#define	DP83867_RGMIIDCTL_2_75_NS	0xa
+#define	DP83867_RGMIIDCTL_3_00_NS	0xb
+#define	DP83867_RGMIIDCTL_3_25_NS	0xc
+#define	DP83867_RGMIIDCTL_3_50_NS	0xd
+#define	DP83867_RGMIIDCTL_3_75_NS	0xe
+#define	DP83867_RGMIIDCTL_4_00_NS	0xf
+
+#endif
-- 
2.8.0.rc3