1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2018 Marek Vasut <marex@denx.de>
5 * Altera SoCFPGA EMAC extras
16 #include "designware.h"
17 #include <dm/device_compat.h>
18 #include <linux/err.h>
20 #include <asm/arch/system_manager.h>
22 struct dwmac_socfpga_platdata
{
23 struct dw_eth_pdata dw_eth_pdata
;
28 static int dwmac_socfpga_ofdata_to_platdata(struct udevice
*dev
)
30 struct dwmac_socfpga_platdata
*pdata
= dev_get_platdata(dev
);
31 struct regmap
*regmap
;
32 struct ofnode_phandle_args args
;
36 ret
= dev_read_phandle_with_args(dev
, "altr,sysmgr-syscon", NULL
,
39 dev_err(dev
, "Failed to get syscon: %d\n", ret
);
43 if (args
.args_count
!= 2) {
44 dev_err(dev
, "Invalid number of syscon args\n");
48 regmap
= syscon_node_to_regmap(args
.node
);
50 ret
= PTR_ERR(regmap
);
51 dev_err(dev
, "Failed to get regmap: %d\n", ret
);
55 range
= regmap_get_range(regmap
, 0);
57 dev_err(dev
, "Failed to get regmap range\n");
61 pdata
->phy_intf
= range
+ args
.args
[0];
62 pdata
->reg_shift
= args
.args
[1];
64 return designware_eth_ofdata_to_platdata(dev
);
67 static int dwmac_socfpga_probe(struct udevice
*dev
)
69 struct dwmac_socfpga_platdata
*pdata
= dev_get_platdata(dev
);
70 struct eth_pdata
*edata
= &pdata
->dw_eth_pdata
.eth_pdata
;
71 struct reset_ctl_bulk reset_bulk
;
76 switch (edata
->phy_interface
) {
77 case PHY_INTERFACE_MODE_MII
:
78 case PHY_INTERFACE_MODE_GMII
:
79 modereg
= SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII
;
81 case PHY_INTERFACE_MODE_RMII
:
82 modereg
= SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII
;
84 case PHY_INTERFACE_MODE_RGMII
:
85 modereg
= SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII
;
88 dev_err(dev
, "Unsupported PHY mode\n");
92 ret
= reset_get_bulk(dev
, &reset_bulk
);
94 dev_err(dev
, "Failed to get reset: %d\n", ret
);
98 reset_assert_bulk(&reset_bulk
);
100 modemask
= SYSMGR_EMACGRP_CTRL_PHYSEL_MASK
<< pdata
->reg_shift
;
101 clrsetbits_le32(pdata
->phy_intf
, modemask
,
102 modereg
<< pdata
->reg_shift
);
104 reset_release_bulk(&reset_bulk
);
106 return designware_eth_probe(dev
);
109 static const struct udevice_id dwmac_socfpga_ids
[] = {
110 { .compatible
= "altr,socfpga-stmmac" },
114 U_BOOT_DRIVER(dwmac_socfpga
) = {
115 .name
= "dwmac_socfpga",
117 .of_match
= dwmac_socfpga_ids
,
118 .ofdata_to_platdata
= dwmac_socfpga_ofdata_to_platdata
,
119 .probe
= dwmac_socfpga_probe
,
120 .ops
= &designware_eth_ops
,
121 .priv_auto_alloc_size
= sizeof(struct dw_eth_dev
),
122 .platdata_auto_alloc_size
= sizeof(struct dwmac_socfpga_platdata
),
123 .flags
= DM_FLAG_ALLOC_PRIV_DMA
,