2 * Copyright 2011 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <libfdt_env.h>
10 #include <fdt_support.h>
13 #include <asm/fsl_serdes.h>
16 * Given the following ...
18 * 1) A pointer to an Fman Ethernet node (as identified by the 'compat'
19 * compatible string and 'addr' physical address)
21 * 2) The name of an alias that points to the ethernet-phy node (usually inside
22 * a virtual MDIO node)
24 * ... update that Ethernet node's phy-handle property to point to the
25 * ethernet-phy node. This is how we link an Ethernet node to its PHY, so each
26 * PHY in a virtual MDIO node must have an alias.
28 * Returns 0 on success, or a negative FDT error code on error.
30 int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
37 /* Get a path to the node that 'alias' points to */
38 path = fdt_get_alias(fdt, alias);
40 return -FDT_ERR_BADPATH;
42 /* Get the offset of that node */
43 offset = fdt_path_offset(fdt, path);
47 ph = fdt_create_phandle(fdt, offset);
49 return -FDT_ERR_BADPHANDLE;
51 offset = fdt_node_offset_by_compat_reg(fdt, compat, addr);
55 return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph));
59 * Return the SerDes device enum for a given Fman port
61 * This function just maps the fm_port namespace to the srds_prtcl namespace.
63 enum srds_prtcl serdes_device_from_fm_port(enum fm_port port)
65 static const enum srds_prtcl srds_table[] = {
66 [FM1_DTSEC1] = SGMII_FM1_DTSEC1,
67 [FM1_DTSEC2] = SGMII_FM1_DTSEC2,
68 [FM1_DTSEC3] = SGMII_FM1_DTSEC3,
69 [FM1_DTSEC4] = SGMII_FM1_DTSEC4,
70 [FM1_DTSEC5] = SGMII_FM1_DTSEC5,
71 [FM1_10GEC1] = XAUI_FM1,
72 [FM2_DTSEC1] = SGMII_FM2_DTSEC1,
73 [FM2_DTSEC2] = SGMII_FM2_DTSEC2,
74 [FM2_DTSEC3] = SGMII_FM2_DTSEC3,
75 [FM2_DTSEC4] = SGMII_FM2_DTSEC4,
76 [FM2_DTSEC5] = SGMII_FM2_DTSEC5,
77 [FM2_10GEC1] = XAUI_FM2,
80 if ((port < FM1_DTSEC1) || (port > FM2_10GEC1))
83 return srds_table[port];