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Amit Singh Tomar3c5c4ee2020-05-09 19:55:12 +05301// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2020 Amit Singh Tomar <amittomer25@gmail.com>
4 *
5 * Actions DWMAC specific glue layer
6 */
7
8#include <common.h>
9#include <asm/io.h>
10#include <dm.h>
11#include <clk.h>
12#include <phy.h>
13#include <regmap.h>
14#include <reset.h>
15#include <syscon.h>
16#include "designware.h"
17#include <asm/arch-owl/regs_s700.h>
18#include <linux/bitops.h>
19
20/* pin control for MAC */
21#define RMII_TXD01_MFP_CTL0 (0x0 << 16)
22#define RMII_RXD01_MFP_CTL0 (0x0 << 8)
23#define RMII_TXEN_TXER_MFP_CTL0 (0x0 << 13)
24#define RMII_REF_CLK_MFP_CTL0 (0x0 << 6)
25#define CLKO_25M_EN_MFP_CTL3 BIT(30)
26
27DECLARE_GLOBAL_DATA_PTR;
28
29static void dwmac_board_setup(void)
30{
31 clrbits_le32(MFP_CTL0, (RMII_TXD01_MFP_CTL0 | RMII_RXD01_MFP_CTL0 |
32 RMII_TXEN_TXER_MFP_CTL0 | RMII_REF_CLK_MFP_CTL0));
33
34 setbits_le32(MFP_CTL3, CLKO_25M_EN_MFP_CTL3);
35}
36
37static int dwmac_s700_probe(struct udevice *dev)
38{
39 dwmac_board_setup();
40
41 /* This is undocumented, phy interface select register */
42 writel(0x4, 0xe024c0a0);
43
44 return designware_eth_probe(dev);
45}
46
47static int dwmac_s700_ofdata_to_platdata(struct udevice *dev)
48{
49 return designware_eth_ofdata_to_platdata(dev);
50}
51
52static const struct udevice_id dwmac_s700_ids[] = {
53 {.compatible = "actions,s700-ethernet"},
54 { }
55};
56
57U_BOOT_DRIVER(dwmac_s700) = {
58 .name = "dwmac_s700",
59 .id = UCLASS_ETH,
60 .of_match = dwmac_s700_ids,
61 .ofdata_to_platdata = dwmac_s700_ofdata_to_platdata,
62 .probe = dwmac_s700_probe,
63 .ops = &designware_eth_ops,
64 .priv_auto_alloc_size = sizeof(struct dw_eth_dev),
65 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
66 .flags = DM_FLAG_ALLOC_PRIV_DMA,
67};