1 /* 2 * Copyright 2011-2015 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <linux/libfdt.h> 9 #include <linux/libfdt_env.h> 10 #include <fdt_support.h> 11 12 #include <fm_eth.h> 13 #ifdef CONFIG_FSL_LAYERSCAPE 14 #include <asm/arch/fsl_serdes.h> 15 #else 16 #include <asm/fsl_serdes.h> 17 #endif 18 19 /* 20 * Given the following ... 21 * 22 * 1) A pointer to an Fman Ethernet node (as identified by the 'compat' 23 * compatible string and 'addr' physical address) 24 * 25 * 2) The name of an alias that points to the ethernet-phy node (usually inside 26 * a virtual MDIO node) 27 * 28 * ... update that Ethernet node's phy-handle property to point to the 29 * ethernet-phy node. This is how we link an Ethernet node to its PHY, so each 30 * PHY in a virtual MDIO node must have an alias. 31 * 32 * Returns 0 on success, or a negative FDT error code on error. 33 */ 34 int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr, 35 const char *alias) 36 { 37 int offset; 38 unsigned int ph; 39 const char *path; 40 41 /* Get a path to the node that 'alias' points to */ 42 path = fdt_get_alias(fdt, alias); 43 if (!path) 44 return -FDT_ERR_BADPATH; 45 46 /* Get the offset of that node */ 47 offset = fdt_path_offset(fdt, path); 48 if (offset < 0) 49 return offset; 50 51 ph = fdt_create_phandle(fdt, offset); 52 if (!ph) 53 return -FDT_ERR_BADPHANDLE; 54 55 ph = cpu_to_fdt32(ph); 56 57 offset = fdt_node_offset_by_compat_reg(fdt, compat, addr); 58 if (offset < 0) 59 return offset; 60 61 return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph)); 62 } 63 64 /* 65 * Return the SerDes device enum for a given Fman port 66 * 67 * This function just maps the fm_port namespace to the srds_prtcl namespace. 68 */ 69 enum srds_prtcl serdes_device_from_fm_port(enum fm_port port) 70 { 71 static const enum srds_prtcl srds_table[] = { 72 [FM1_DTSEC1] = SGMII_FM1_DTSEC1, 73 [FM1_DTSEC2] = SGMII_FM1_DTSEC2, 74 [FM1_DTSEC3] = SGMII_FM1_DTSEC3, 75 [FM1_DTSEC4] = SGMII_FM1_DTSEC4, 76 [FM1_DTSEC5] = SGMII_FM1_DTSEC5, 77 [FM1_10GEC1] = XAUI_FM1, 78 [FM2_DTSEC1] = SGMII_FM2_DTSEC1, 79 [FM2_DTSEC2] = SGMII_FM2_DTSEC2, 80 [FM2_DTSEC3] = SGMII_FM2_DTSEC3, 81 [FM2_DTSEC4] = SGMII_FM2_DTSEC4, 82 [FM2_DTSEC5] = SGMII_FM2_DTSEC5, 83 [FM2_10GEC1] = XAUI_FM2, 84 }; 85 86 if ((port < FM1_DTSEC1) || (port > FM2_10GEC1)) 87 return NONE; 88 else 89 return srds_table[port]; 90 } 91