1 /* 2 * Copyright 2011 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <libfdt.h> 9 #include <libfdt_env.h> 10 #include <fdt_support.h> 11 12 #include <fm_eth.h> 13 #include <asm/fsl_serdes.h> 14 15 /* 16 * Given the following ... 17 * 18 * 1) A pointer to an Fman Ethernet node (as identified by the 'compat' 19 * compatible string and 'addr' physical address) 20 * 21 * 2) The name of an alias that points to the ethernet-phy node (usually inside 22 * a virtual MDIO node) 23 * 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. 27 * 28 * Returns 0 on success, or a negative FDT error code on error. 29 */ 30 int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr, 31 const char *alias) 32 { 33 int offset; 34 unsigned int ph; 35 const char *path; 36 37 /* Get a path to the node that 'alias' points to */ 38 path = fdt_get_alias(fdt, alias); 39 if (!path) 40 return -FDT_ERR_BADPATH; 41 42 /* Get the offset of that node */ 43 offset = fdt_path_offset(fdt, path); 44 if (offset < 0) 45 return offset; 46 47 ph = fdt_create_phandle(fdt, offset); 48 if (!ph) 49 return -FDT_ERR_BADPHANDLE; 50 51 offset = fdt_node_offset_by_compat_reg(fdt, compat, addr); 52 if (offset < 0) 53 return offset; 54 55 return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph)); 56 } 57 58 /* 59 * Return the SerDes device enum for a given Fman port 60 * 61 * This function just maps the fm_port namespace to the srds_prtcl namespace. 62 */ 63 enum srds_prtcl serdes_device_from_fm_port(enum fm_port port) 64 { 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, 78 }; 79 80 if ((port < FM1_DTSEC1) || (port > FM2_10GEC1)) 81 return NONE; 82 else 83 return srds_table[port]; 84 } 85