blob: ddbaa87daf3d65d1bd7b9efbfba890676c9dbc6e [file] [log] [blame]
Neil Armstrong798424e2021-02-24 20:33:56 +01001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2021 BayLibre, SAS
4 */
5
6#include <common.h>
7#include <asm/io.h>
8#include <dm.h>
9#include <phy.h>
10#include "designware.h"
11#include <dm/device_compat.h>
12#include <linux/err.h>
13
14#define ETH_REG_0 0x0
15#define ETH_REG_1 0x4
16#define ETH_REG_2 0x18
17#define ETH_REG_3 0x1c
18
19#define GX_ETH_REG_0_PHY_INTF BIT(0)
20#define GX_ETH_REG_0_TX_PHASE(x) (((x) & 3) << 5)
21#define GX_ETH_REG_0_TX_RATIO(x) (((x) & 7) << 7)
22#define GX_ETH_REG_0_PHY_CLK_EN BIT(10)
23#define GX_ETH_REG_0_INVERT_RMII_CLK BIT(11)
24#define GX_ETH_REG_0_CLK_EN BIT(12)
25
26#define AXG_ETH_REG_0_PHY_INTF_RGMII BIT(0)
27#define AXG_ETH_REG_0_PHY_INTF_RMII BIT(2)
28#define AXG_ETH_REG_0_TX_PHASE(x) (((x) & 3) << 5)
29#define AXG_ETH_REG_0_TX_RATIO(x) (((x) & 7) << 7)
30#define AXG_ETH_REG_0_PHY_CLK_EN BIT(10)
31#define AXG_ETH_REG_0_INVERT_RMII_CLK BIT(11)
32#define AXG_ETH_REG_0_CLK_EN BIT(12)
33
34struct dwmac_meson8b_plat {
35 struct dw_eth_pdata dw_eth_pdata;
36 int (*dwmac_setup)(struct udevice *dev, struct eth_pdata *edata);
37 void *regs;
38};
39
40static int dwmac_meson8b_of_to_plat(struct udevice *dev)
41{
42 struct dwmac_meson8b_plat *pdata = dev_get_plat(dev);
43
44 pdata->regs = (void *)dev_read_addr_index(dev, 1);
45 if ((fdt_addr_t)pdata->regs == FDT_ADDR_T_NONE)
46 return -EINVAL;
47
48 pdata->dwmac_setup = (void *)dev_get_driver_data(dev);
49 if (!pdata->dwmac_setup)
50 return -EINVAL;
51
52 return designware_eth_of_to_plat(dev);
53}
54
55static int dwmac_setup_axg(struct udevice *dev, struct eth_pdata *edata)
56{
57 struct dwmac_meson8b_plat *plat = dev_get_plat(dev);
58
59 switch (edata->phy_interface) {
60 case PHY_INTERFACE_MODE_RGMII:
61 case PHY_INTERFACE_MODE_RGMII_ID:
Neil Armstrong798424e2021-02-24 20:33:56 +010062 /* Set RGMII mode */
63 setbits_le32(plat->regs + ETH_REG_0, AXG_ETH_REG_0_PHY_INTF_RGMII |
64 AXG_ETH_REG_0_TX_PHASE(1) |
65 AXG_ETH_REG_0_TX_RATIO(4) |
66 AXG_ETH_REG_0_PHY_CLK_EN |
67 AXG_ETH_REG_0_CLK_EN);
68 break;
69
Neil Armstrong81d0eda2021-05-05 09:52:08 +020070 case PHY_INTERFACE_MODE_RGMII_RXID:
71 case PHY_INTERFACE_MODE_RGMII_TXID:
72 /* TOFIX: handle amlogic,tx-delay-ns & rx-internal-delay-ps from DT */
73 setbits_le32(plat->regs + ETH_REG_0, AXG_ETH_REG_0_PHY_INTF_RGMII |
74 AXG_ETH_REG_0_TX_RATIO(4) |
75 AXG_ETH_REG_0_PHY_CLK_EN |
76 AXG_ETH_REG_0_CLK_EN);
77 break;
78
Neil Armstrong798424e2021-02-24 20:33:56 +010079 case PHY_INTERFACE_MODE_RMII:
80 /* Set RMII mode */
81 out_le32(plat->regs + ETH_REG_0, AXG_ETH_REG_0_PHY_INTF_RMII |
82 AXG_ETH_REG_0_INVERT_RMII_CLK |
83 AXG_ETH_REG_0_CLK_EN);
84 break;
85 default:
86 dev_err(dev, "Unsupported PHY mode\n");
87 return -EINVAL;
88 }
89
90 return 0;
91}
92
93static int dwmac_setup_gx(struct udevice *dev, struct eth_pdata *edata)
94{
95 struct dwmac_meson8b_plat *plat = dev_get_plat(dev);
96
97 switch (edata->phy_interface) {
98 case PHY_INTERFACE_MODE_RGMII:
99 case PHY_INTERFACE_MODE_RGMII_ID:
Neil Armstrong798424e2021-02-24 20:33:56 +0100100 /* Set RGMII mode */
101 setbits_le32(plat->regs + ETH_REG_0, GX_ETH_REG_0_PHY_INTF |
102 GX_ETH_REG_0_TX_PHASE(1) |
103 GX_ETH_REG_0_TX_RATIO(4) |
104 GX_ETH_REG_0_PHY_CLK_EN |
105 GX_ETH_REG_0_CLK_EN);
106
107 break;
108
Neil Armstrong81d0eda2021-05-05 09:52:08 +0200109 case PHY_INTERFACE_MODE_RGMII_RXID:
110 case PHY_INTERFACE_MODE_RGMII_TXID:
111 /* TOFIX: handle amlogic,tx-delay-ns & rx-internal-delay-ps from DT */
112 setbits_le32(plat->regs + ETH_REG_0, GX_ETH_REG_0_PHY_INTF |
113 GX_ETH_REG_0_TX_RATIO(4) |
114 GX_ETH_REG_0_PHY_CLK_EN |
115 GX_ETH_REG_0_CLK_EN);
116
117 break;
118
Neil Armstrong798424e2021-02-24 20:33:56 +0100119 case PHY_INTERFACE_MODE_RMII:
120 /* Set RMII mode */
121 out_le32(plat->regs + ETH_REG_0, GX_ETH_REG_0_INVERT_RMII_CLK |
122 GX_ETH_REG_0_CLK_EN);
123
124 if (!IS_ENABLED(CONFIG_MESON_GXBB))
125 writel(0x10110181, plat->regs + ETH_REG_2);
126
127 break;
128 default:
129 dev_err(dev, "Unsupported PHY mode\n");
130 return -EINVAL;
131 }
132
133 return 0;
134}
135
136static int dwmac_meson8b_probe(struct udevice *dev)
137{
138 struct dwmac_meson8b_plat *pdata = dev_get_plat(dev);
139 struct eth_pdata *edata = &pdata->dw_eth_pdata.eth_pdata;
140 int ret;
141
142 ret = pdata->dwmac_setup(dev, edata);
143 if (ret)
144 return ret;
145
146 return designware_eth_probe(dev);
147}
148
149static const struct udevice_id dwmac_meson8b_ids[] = {
150 { .compatible = "amlogic,meson-gxbb-dwmac", .data = (ulong)dwmac_setup_gx },
Neil Armstrong4c2eb952021-04-16 14:52:06 +0200151 { .compatible = "amlogic,meson-g12a-dwmac", .data = (ulong)dwmac_setup_axg },
Neil Armstrong798424e2021-02-24 20:33:56 +0100152 { .compatible = "amlogic,meson-axg-dwmac", .data = (ulong)dwmac_setup_axg },
153 { }
154};
155
156U_BOOT_DRIVER(dwmac_meson8b) = {
157 .name = "dwmac_meson8b",
158 .id = UCLASS_ETH,
159 .of_match = dwmac_meson8b_ids,
160 .of_to_plat = dwmac_meson8b_of_to_plat,
161 .probe = dwmac_meson8b_probe,
162 .ops = &designware_eth_ops,
163 .priv_auto = sizeof(struct dw_eth_dev),
164 .plat_auto = sizeof(struct dwmac_meson8b_plat),
165 .flags = DM_FLAG_ALLOC_PRIV_DMA,
166};