90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2011-2015 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <linux/libfdt.h>
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#include <linux/libfdt_env.h>
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#include <fdt_support.h>
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#include <fm_eth.h>
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#ifdef CONFIG_FSL_LAYERSCAPE
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#include <asm/arch/fsl_serdes.h>
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#else
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#include <asm/fsl_serdes.h>
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#endif
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/*
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* Given the following ...
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*
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* 1) A pointer to an Fman Ethernet node (as identified by the 'compat'
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* compatible string and 'addr' physical address)
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*
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* 2) The name of an alias that points to the ethernet-phy node (usually inside
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* a virtual MDIO node)
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*
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* ... update that Ethernet node's phy-handle property to point to the
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* ethernet-phy node. This is how we link an Ethernet node to its PHY, so each
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* PHY in a virtual MDIO node must have an alias.
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*
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* Returns 0 on success, or a negative FDT error code on error.
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*/
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int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
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const char *alias)
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{
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int offset;
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unsigned int ph;
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const char *path;
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/* Get a path to the node that 'alias' points to */
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path = fdt_get_alias(fdt, alias);
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if (!path)
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return -FDT_ERR_BADPATH;
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/* Get the offset of that node */
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offset = fdt_path_offset(fdt, path);
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if (offset < 0)
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return offset;
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ph = fdt_create_phandle(fdt, offset);
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if (!ph)
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return -FDT_ERR_BADPHANDLE;
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ph = cpu_to_fdt32(ph);
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offset = fdt_node_offset_by_compat_reg(fdt, compat, addr);
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if (offset < 0)
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return offset;
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return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph));
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}
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/*
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* Return the SerDes device enum for a given Fman port
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*
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* This function just maps the fm_port namespace to the srds_prtcl namespace.
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*/
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enum srds_prtcl serdes_device_from_fm_port(enum fm_port port)
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{
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static const enum srds_prtcl srds_table[] = {
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[FM1_DTSEC1] = SGMII_FM1_DTSEC1,
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[FM1_DTSEC2] = SGMII_FM1_DTSEC2,
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[FM1_DTSEC3] = SGMII_FM1_DTSEC3,
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[FM1_DTSEC4] = SGMII_FM1_DTSEC4,
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[FM1_DTSEC5] = SGMII_FM1_DTSEC5,
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[FM1_10GEC1] = XAUI_FM1,
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[FM2_DTSEC1] = SGMII_FM2_DTSEC1,
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[FM2_DTSEC2] = SGMII_FM2_DTSEC2,
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[FM2_DTSEC3] = SGMII_FM2_DTSEC3,
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[FM2_DTSEC4] = SGMII_FM2_DTSEC4,
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[FM2_DTSEC5] = SGMII_FM2_DTSEC5,
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[FM2_10GEC1] = XAUI_FM2,
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};
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if ((port < FM1_DTSEC1) || (port > FM2_10GEC1))
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return NONE;
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else
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return srds_table[port];
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}
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