1 /* 2 * Copyright 2011 Freescale Semiconductor, Inc. 3 * 4 * See file CREDITS for list of people who contributed to this 5 * project. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20 * MA 02111-1307 USA 21 */ 22 23 #include <common.h> 24 #include <libfdt.h> 25 #include <libfdt_env.h> 26 #include <fdt_support.h> 27 28 #include <fm_eth.h> 29 #include <asm/fsl_serdes.h> 30 31 /* 32 * Given the following ... 33 * 34 * 1) A pointer to an Fman Ethernet node (as identified by the 'compat' 35 * compatible string and 'addr' physical address) 36 * 37 * 2) The name of an alias that points to the ethernet-phy node (usually inside 38 * a virtual MDIO node) 39 * 40 * ... update that Ethernet node's phy-handle property to point to the 41 * ethernet-phy node. This is how we link an Ethernet node to its PHY, so each 42 * PHY in a virtual MDIO node must have an alias. 43 * 44 * Returns 0 on success, or a negative FDT error code on error. 45 */ 46 int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr, 47 const char *alias) 48 { 49 int offset; 50 unsigned int ph; 51 const char *path; 52 53 /* Get a path to the node that 'alias' points to */ 54 path = fdt_get_alias(fdt, alias); 55 if (!path) 56 return -FDT_ERR_BADPATH; 57 58 /* Get the offset of that node */ 59 offset = fdt_path_offset(fdt, path); 60 if (offset < 0) 61 return offset; 62 63 ph = fdt_create_phandle(fdt, offset); 64 if (!ph) 65 return -FDT_ERR_BADPHANDLE; 66 67 offset = fdt_node_offset_by_compat_reg(fdt, compat, addr); 68 if (offset < 0) 69 return offset; 70 71 return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph)); 72 } 73 74 /* 75 * Return the SerDes device enum for a given Fman port 76 * 77 * This function just maps the fm_port namespace to the srds_prtcl namespace. 78 */ 79 enum srds_prtcl serdes_device_from_fm_port(enum fm_port port) 80 { 81 static const enum srds_prtcl srds_table[] = { 82 [FM1_DTSEC1] = SGMII_FM1_DTSEC1, 83 [FM1_DTSEC2] = SGMII_FM1_DTSEC2, 84 [FM1_DTSEC3] = SGMII_FM1_DTSEC3, 85 [FM1_DTSEC4] = SGMII_FM1_DTSEC4, 86 [FM1_DTSEC5] = SGMII_FM1_DTSEC5, 87 [FM1_10GEC1] = XAUI_FM1, 88 [FM2_DTSEC1] = SGMII_FM2_DTSEC1, 89 [FM2_DTSEC2] = SGMII_FM2_DTSEC2, 90 [FM2_DTSEC3] = SGMII_FM2_DTSEC3, 91 [FM2_DTSEC4] = SGMII_FM2_DTSEC4, 92 [FM2_DTSEC5] = SGMII_FM2_DTSEC5, 93 [FM2_10GEC1] = XAUI_FM2, 94 }; 95 96 if ((port < FM1_DTSEC1) || (port > FM2_10GEC1)) 97 return NONE; 98 else 99 return srds_table[port]; 100 } 101