1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015 - 2019 MediaTek Inc.
4 * Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
5 * Ryder Lee <ryder.lee@mediatek.com>
11 #include <generic-phy.h>
15 #include <dt-bindings/phy/phy.h>
17 /* version V1 sub-banks offset base address */
18 /* banks shared by multiple phys */
19 #define SSUSB_SIFSLV_V1_SPLLC 0x000 /* shared by u3 phys */
20 #define SSUSB_SIFSLV_V1_CHIP 0x300 /* shared by u3 phys */
21 /* u3/pcie/sata phy banks */
22 #define SSUSB_SIFSLV_V1_U3PHYD 0x000
23 #define SSUSB_SIFSLV_V1_U3PHYA 0x200
25 #define U3P_U3_CHIP_GPIO_CTLD 0x0c
26 #define P3C_REG_IP_SW_RST BIT(31)
27 #define P3C_MCU_BUS_CK_GATE_EN BIT(30)
28 #define P3C_FORCE_IP_SW_RST BIT(29)
30 #define U3P_U3_CHIP_GPIO_CTLE 0x10
31 #define P3C_RG_SWRST_U3_PHYD BIT(25)
32 #define P3C_RG_SWRST_U3_PHYD_FORCE_EN BIT(24)
34 #define U3P_U3_PHYA_REG0 0x000
35 #define P3A_RG_CLKDRV_OFF GENMASK(3, 2)
36 #define P3A_RG_CLKDRV_OFF_VAL(x) ((0x3 & (x)) << 2)
38 #define U3P_U3_PHYA_REG1 0x004
39 #define P3A_RG_CLKDRV_AMP GENMASK(31, 29)
40 #define P3A_RG_CLKDRV_AMP_VAL(x) ((0x7 & (x)) << 29)
42 #define U3P_U3_PHYA_DA_REG0 0x100
43 #define P3A_RG_XTAL_EXT_PE2H GENMASK(17, 16)
44 #define P3A_RG_XTAL_EXT_PE2H_VAL(x) ((0x3 & (x)) << 16)
45 #define P3A_RG_XTAL_EXT_PE1H GENMASK(13, 12)
46 #define P3A_RG_XTAL_EXT_PE1H_VAL(x) ((0x3 & (x)) << 12)
47 #define P3A_RG_XTAL_EXT_EN_U3 GENMASK(11, 10)
48 #define P3A_RG_XTAL_EXT_EN_U3_VAL(x) ((0x3 & (x)) << 10)
50 #define U3P_U3_PHYA_DA_REG4 0x108
51 #define P3A_RG_PLL_DIVEN_PE2H GENMASK(21, 19)
52 #define P3A_RG_PLL_BC_PE2H GENMASK(7, 6)
53 #define P3A_RG_PLL_BC_PE2H_VAL(x) ((0x3 & (x)) << 6)
55 #define U3P_U3_PHYA_DA_REG5 0x10c
56 #define P3A_RG_PLL_BR_PE2H GENMASK(29, 28)
57 #define P3A_RG_PLL_BR_PE2H_VAL(x) ((0x3 & (x)) << 28)
58 #define P3A_RG_PLL_IC_PE2H GENMASK(15, 12)
59 #define P3A_RG_PLL_IC_PE2H_VAL(x) ((0xf & (x)) << 12)
61 #define U3P_U3_PHYA_DA_REG6 0x110
62 #define P3A_RG_PLL_IR_PE2H GENMASK(19, 16)
63 #define P3A_RG_PLL_IR_PE2H_VAL(x) ((0xf & (x)) << 16)
65 #define U3P_U3_PHYA_DA_REG7 0x114
66 #define P3A_RG_PLL_BP_PE2H GENMASK(19, 16)
67 #define P3A_RG_PLL_BP_PE2H_VAL(x) ((0xf & (x)) << 16)
69 #define U3P_U3_PHYA_DA_REG20 0x13c
70 #define P3A_RG_PLL_DELTA1_PE2H GENMASK(31, 16)
71 #define P3A_RG_PLL_DELTA1_PE2H_VAL(x) ((0xffff & (x)) << 16)
73 #define U3P_U3_PHYA_DA_REG25 0x148
74 #define P3A_RG_PLL_DELTA_PE2H GENMASK(15, 0)
75 #define P3A_RG_PLL_DELTA_PE2H_VAL(x) (0xffff & (x))
77 #define U3P_U3_PHYD_RXDET1 0x128
78 #define P3D_RG_RXDET_STB2_SET GENMASK(17, 9)
79 #define P3D_RG_RXDET_STB2_SET_VAL(x) ((0x1ff & (x)) << 9)
81 #define U3P_U3_PHYD_RXDET2 0x12c
82 #define P3D_RG_RXDET_STB2_SET_P3 GENMASK(8, 0)
83 #define P3D_RG_RXDET_STB2_SET_P3_VAL(x) (0x1ff & (x))
88 void __iomem *phyd; /* include u3phyd_bank2 */
89 void __iomem *phya; /* include u3phya_da */
92 struct mtk_phy_instance {
93 void __iomem *port_base;
94 const struct device_node *np;
96 struct u3phy_banks u3_banks;
98 /* reference clock of anolog phy */
105 void __iomem *sif_base;
106 struct mtk_phy_instance **phys;
110 static void pcie_phy_instance_init(struct mtk_tphy *tphy,
111 struct mtk_phy_instance *instance)
113 struct u3phy_banks *u3_banks = &instance->u3_banks;
115 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG0,
116 P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H,
117 P3A_RG_XTAL_EXT_PE1H_VAL(0x2) |
118 P3A_RG_XTAL_EXT_PE2H_VAL(0x2));
121 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG1, P3A_RG_CLKDRV_AMP,
122 P3A_RG_CLKDRV_AMP_VAL(0x4));
123 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_REG0, P3A_RG_CLKDRV_OFF,
124 P3A_RG_CLKDRV_OFF_VAL(0x1));
126 /* SSC delta -5000ppm */
127 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG20,
128 P3A_RG_PLL_DELTA1_PE2H,
129 P3A_RG_PLL_DELTA1_PE2H_VAL(0x3c));
131 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG25,
132 P3A_RG_PLL_DELTA_PE2H,
133 P3A_RG_PLL_DELTA_PE2H_VAL(0x36));
135 /* change pll BW 0.6M */
136 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG5,
137 P3A_RG_PLL_BR_PE2H | P3A_RG_PLL_IC_PE2H,
138 P3A_RG_PLL_BR_PE2H_VAL(0x1) |
139 P3A_RG_PLL_IC_PE2H_VAL(0x1));
140 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG4,
141 P3A_RG_PLL_DIVEN_PE2H | P3A_RG_PLL_BC_PE2H,
142 P3A_RG_PLL_BC_PE2H_VAL(0x3));
144 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG6,
145 P3A_RG_PLL_IR_PE2H, P3A_RG_PLL_IR_PE2H_VAL(0x2));
146 clrsetbits_le32(u3_banks->phya + U3P_U3_PHYA_DA_REG7,
147 P3A_RG_PLL_BP_PE2H, P3A_RG_PLL_BP_PE2H_VAL(0xa));
149 /* Tx Detect Rx Timing: 10us -> 5us */
150 clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET1,
151 P3D_RG_RXDET_STB2_SET,
152 P3D_RG_RXDET_STB2_SET_VAL(0x10));
153 clrsetbits_le32(u3_banks->phyd + U3P_U3_PHYD_RXDET2,
154 P3D_RG_RXDET_STB2_SET_P3,
155 P3D_RG_RXDET_STB2_SET_P3_VAL(0x10));
157 /* wait for PCIe subsys register to active */
161 static void pcie_phy_instance_power_on(struct mtk_tphy *tphy,
162 struct mtk_phy_instance *instance)
164 struct u3phy_banks *bank = &instance->u3_banks;
166 clrbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
167 P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
168 clrbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
169 P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
172 static void pcie_phy_instance_power_off(struct mtk_tphy *tphy,
173 struct mtk_phy_instance *instance)
176 struct u3phy_banks *bank = &instance->u3_banks;
178 setbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLD,
179 P3C_FORCE_IP_SW_RST | P3C_REG_IP_SW_RST);
180 setbits_le32(bank->chip + U3P_U3_CHIP_GPIO_CTLE,
181 P3C_RG_SWRST_U3_PHYD_FORCE_EN | P3C_RG_SWRST_U3_PHYD);
184 static void phy_v1_banks_init(struct mtk_tphy *tphy,
185 struct mtk_phy_instance *instance)
187 struct u3phy_banks *u3_banks = &instance->u3_banks;
189 switch (instance->type) {
191 u3_banks->spllc = tphy->sif_base + SSUSB_SIFSLV_V1_SPLLC;
192 u3_banks->chip = tphy->sif_base + SSUSB_SIFSLV_V1_CHIP;
193 u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V1_U3PHYD;
194 u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V1_U3PHYA;
201 static int mtk_phy_init(struct phy *phy)
203 struct mtk_tphy *tphy = dev_get_priv(phy->dev);
204 struct mtk_phy_instance *instance = tphy->phys[phy->id];
207 /* we may use a fixed-clock here */
208 ret = clk_enable(&instance->ref_clk);
209 if (ret && ret != -ENOSYS)
212 switch (instance->type) {
214 pcie_phy_instance_init(tphy, instance);
223 static int mtk_phy_power_on(struct phy *phy)
225 struct mtk_tphy *tphy = dev_get_priv(phy->dev);
226 struct mtk_phy_instance *instance = tphy->phys[phy->id];
228 pcie_phy_instance_power_on(tphy, instance);
233 static int mtk_phy_power_off(struct phy *phy)
235 struct mtk_tphy *tphy = dev_get_priv(phy->dev);
236 struct mtk_phy_instance *instance = tphy->phys[phy->id];
238 pcie_phy_instance_power_off(tphy, instance);
243 static int mtk_phy_exit(struct phy *phy)
245 struct mtk_tphy *tphy = dev_get_priv(phy->dev);
246 struct mtk_phy_instance *instance = tphy->phys[phy->id];
248 clk_disable(&instance->ref_clk);
253 static int mtk_phy_xlate(struct phy *phy,
254 struct ofnode_phandle_args *args)
256 struct mtk_tphy *tphy = dev_get_priv(phy->dev);
257 struct mtk_phy_instance *instance = NULL;
258 const struct device_node *phy_np = ofnode_to_np(args->node);
262 dev_err(phy->dev, "null pointer phy node\n");
266 if (args->args_count < 1) {
267 dev_err(phy->dev, "invalid number of cells in 'phy' property\n");
271 for (index = 0; index < tphy->nphys; index++)
272 if (phy_np == tphy->phys[index]->np) {
273 instance = tphy->phys[index];
278 dev_err(phy->dev, "failed to find appropriate phy\n");
283 instance->type = args->args[1];
284 if (!(instance->type == PHY_TYPE_USB2 ||
285 instance->type == PHY_TYPE_USB3 ||
286 instance->type == PHY_TYPE_PCIE ||
287 instance->type == PHY_TYPE_SATA)) {
288 dev_err(phy->dev, "unsupported device type\n");
292 phy_v1_banks_init(tphy, instance);
297 static const struct phy_ops mtk_tphy_ops = {
298 .init = mtk_phy_init,
299 .exit = mtk_phy_exit,
300 .power_on = mtk_phy_power_on,
301 .power_off = mtk_phy_power_off,
302 .of_xlate = mtk_phy_xlate,
305 static int mtk_tphy_probe(struct udevice *dev)
307 struct mtk_tphy *tphy = dev_get_priv(dev);
311 dev_for_each_subnode(subnode, dev)
314 tphy->phys = devm_kcalloc(dev, tphy->nphys, sizeof(*tphy->phys),
319 tphy->sif_base = dev_read_addr_ptr(dev);
323 dev_for_each_subnode(subnode, dev) {
324 struct mtk_phy_instance *instance;
328 instance = devm_kzalloc(dev, sizeof(*instance), GFP_KERNEL);
332 addr = ofnode_get_addr(subnode);
333 if (addr == FDT_ADDR_T_NONE)
336 instance->port_base = map_sysmem(addr, 0);
337 instance->index = index;
338 instance->np = ofnode_to_np(subnode);
339 tphy->phys[index] = instance;
342 err = clk_get_by_index_nodev(subnode, 0, &instance->ref_clk);
350 static const struct udevice_id mtk_tphy_id_table[] = {
351 { .compatible = "mediatek,generic-tphy-v1", },
355 U_BOOT_DRIVER(mtk_tphy) = {
358 .of_match = mtk_tphy_id_table,
359 .ops = &mtk_tphy_ops,
360 .probe = mtk_tphy_probe,
361 .priv_auto_alloc_size = sizeof(struct mtk_tphy),