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11#include <common.h>
12#include <usb.h>
13#include <dm/device_compat.h>
14#include <linux/delay.h>
15#include <linux/errno.h>
16#include <asm/omap_common.h>
17#include <asm/arch/cpu.h>
18#include <asm/arch/sys_proto.h>
19
20#include <linux/compat.h>
21#include <linux/usb/dwc3.h>
22#include <linux/usb/xhci-omap.h>
23
24#include <usb/xhci.h>
25
26#ifdef CONFIG_OMAP_USB3PHY1_HOST
27struct usb3_dpll_params {
28 u16 m;
29 u8 n;
30 u8 freq:3;
31 u8 sd;
32 u32 mf;
33};
34
35struct usb3_dpll_map {
36 unsigned long rate;
37 struct usb3_dpll_params params;
38 struct usb3_dpll_map *dpll_map;
39};
40
41static struct usb3_dpll_map dpll_map_usb[] = {
42 {12000000, {1250, 5, 4, 20, 0} },
43 {16800000, {3125, 20, 4, 20, 0} },
44 {19200000, {1172, 8, 4, 20, 65537} },
45 {20000000, {1000, 7, 4, 10, 0} },
46 {26000000, {1250, 12, 4, 20, 0} },
47 {38400000, {3125, 47, 4, 20, 92843} },
48 { },
49};
50
51static struct usb3_dpll_params *omap_usb3_get_dpll_params(void)
52{
53 unsigned long rate;
54 struct usb3_dpll_map *dpll_map = dpll_map_usb;
55
56 rate = get_sys_clk_freq();
57
58 for (; dpll_map->rate; dpll_map++) {
59 if (rate == dpll_map->rate)
60 return &dpll_map->params;
61 }
62
63 dev_err(phy->dev, "No DPLL configuration for %lu Hz SYS CLK\n", rate);
64
65 return NULL;
66}
67
68static void omap_usb_dpll_relock(struct omap_usb3_phy *phy_regs)
69{
70 u32 val;
71
72 writel(SET_PLL_GO, &phy_regs->pll_go);
73 do {
74 val = readl(&phy_regs->pll_status);
75 if (val & PLL_LOCK)
76 break;
77 } while (1);
78}
79
80static void omap_usb_dpll_lock(struct omap_usb3_phy *phy_regs)
81{
82 struct usb3_dpll_params *dpll_params;
83 u32 val;
84
85 dpll_params = omap_usb3_get_dpll_params();
86 if (!dpll_params)
87 return;
88
89 val = readl(&phy_regs->pll_config_1);
90 val &= ~PLL_REGN_MASK;
91 val |= dpll_params->n << PLL_REGN_SHIFT;
92 writel(val, &phy_regs->pll_config_1);
93
94 val = readl(&phy_regs->pll_config_2);
95 val &= ~PLL_SELFREQDCO_MASK;
96 val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT;
97 writel(val, &phy_regs->pll_config_2);
98
99 val = readl(&phy_regs->pll_config_1);
100 val &= ~PLL_REGM_MASK;
101 val |= dpll_params->m << PLL_REGM_SHIFT;
102 writel(val, &phy_regs->pll_config_1);
103
104 val = readl(&phy_regs->pll_config_4);
105 val &= ~PLL_REGM_F_MASK;
106 val |= dpll_params->mf << PLL_REGM_F_SHIFT;
107 writel(val, &phy_regs->pll_config_4);
108
109 val = readl(&phy_regs->pll_config_3);
110 val &= ~PLL_SD_MASK;
111 val |= dpll_params->sd << PLL_SD_SHIFT;
112 writel(val, &phy_regs->pll_config_3);
113
114 omap_usb_dpll_relock(phy_regs);
115}
116
117static void usb3_phy_partial_powerup(struct omap_usb3_phy *phy_regs)
118{
119 u32 rate = get_sys_clk_freq()/1000000;
120 u32 val;
121
122 val = readl((*ctrl)->control_phy_power_usb);
123 val &= ~(USB3_PWRCTL_CLK_CMD_MASK | USB3_PWRCTL_CLK_FREQ_MASK);
124 val |= (USB3_PHY_PARTIAL_RX_POWERON | USB3_PHY_TX_RX_POWERON);
125 val |= rate << USB3_PWRCTL_CLK_FREQ_SHIFT;
126
127 writel(val, (*ctrl)->control_phy_power_usb);
128}
129
130void usb_phy_power(int on)
131{
132 u32 val;
133
134 val = readl((*ctrl)->control_phy_power_usb);
135 if (on) {
136 val &= ~USB3_PWRCTL_CLK_CMD_MASK;
137 val |= USB3_PHY_TX_RX_POWERON;
138 } else {
139 val &= (~USB3_PWRCTL_CLK_CMD_MASK & ~USB3_PHY_TX_RX_POWERON);
140 }
141
142 writel(val, (*ctrl)->control_phy_power_usb);
143}
144
145void omap_usb3_phy_init(struct omap_usb3_phy *phy_regs)
146{
147 omap_usb_dpll_lock(phy_regs);
148 usb3_phy_partial_powerup(phy_regs);
149
150
151
152
153
154 mdelay(100);
155}
156
157static void omap_enable_usb3_phy(struct omap_xhci *omap)
158{
159 u32 val;
160
161 val = (USBOTGSS_DMADISABLE |
162 USBOTGSS_STANDBYMODE_SMRT_WKUP |
163 USBOTGSS_IDLEMODE_NOIDLE);
164 writel(val, &omap->otg_wrapper->sysconfig);
165
166
167 val = readl(&omap->otg_wrapper->utmi_otg_status);
168 writel(val, &omap->otg_wrapper->utmi_otg_status);
169
170
171 writel(USBOTGSS_COREIRQ_EN, &omap->otg_wrapper->irqenable_set_0);
172 val = (USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN |
173 USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN |
174 USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN |
175 USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN |
176 USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN |
177 USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN |
178 USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN |
179 USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN |
180 USBOTGSS_IRQ_SET_1_OEVT_EN);
181 writel(val, &omap->otg_wrapper->irqenable_set_1);
182
183
184 val = readl(&omap->otg_wrapper->irqstatus_1);
185 writel(val, &omap->otg_wrapper->irqstatus_1);
186 val = readl(&omap->otg_wrapper->irqstatus_0);
187 writel(val, &omap->otg_wrapper->irqstatus_0);
188};
189#endif
190
191#ifdef CONFIG_OMAP_USB2PHY2_HOST
192static void omap_enable_usb2_phy2(struct omap_xhci *omap)
193{
194 u32 reg, val;
195
196 val = (~USB2PHY_AUTORESUME_EN & USB2PHY_DISCHGDET);
197 writel(val, (*ctrl)->control_srcomp_north_side);
198
199 setbits_le32((*prcm)->cm_coreaon_usb_phy2_core_clkctrl,
200 USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
201
202 setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl,
203 (USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K |
204 OTG_SS_CLKCTRL_MODULEMODE_HW));
205
206
207 reg = 0x4a0086c0;
208 val = readl(reg);
209 val |= 0x100;
210 setbits_le32(reg, val);
211}
212
213void usb_phy_power(int on)
214{
215 return;
216}
217#endif
218
219#ifdef CONFIG_AM437X_USB2PHY2_HOST
220static void am437x_enable_usb2_phy2(struct omap_xhci *omap)
221{
222 const u32 usb_otg_ss_clk_val = (USBOTGSSX_CLKCTRL_MODULE_EN |
223 USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960);
224
225 writel(usb_otg_ss_clk_val, PRM_PER_USB_OTG_SS0_CLKCTRL);
226 writel(usb_otg_ss_clk_val, PRM_PER_USB_OTG_SS1_CLKCTRL);
227
228 writel(USBPHYOCPSCP_MODULE_EN, PRM_PER_USBPHYOCP2SCP0_CLKCTRL);
229 writel(USBPHYOCPSCP_MODULE_EN, PRM_PER_USBPHYOCP2SCP1_CLKCTRL);
230}
231
232void usb_phy_power(int on)
233{
234 u32 val;
235
236
237 val = readl(USB1_CTRL);
238 if (on) {
239
240
241
242
243
244 val &= ~(USB1_CTRL_CM_PWRDN | USB1_CTRL_OTG_PWRDN);
245 } else {
246 val |= USB1_CTRL_CM_PWRDN | USB1_CTRL_OTG_PWRDN;
247 }
248
249 writel(val, USB1_CTRL);
250}
251#endif
252
253void omap_enable_phy(struct omap_xhci *omap)
254{
255#ifdef CONFIG_OMAP_USB2PHY2_HOST
256 omap_enable_usb2_phy2(omap);
257#endif
258
259#ifdef CONFIG_AM437X_USB2PHY2_HOST
260 am437x_enable_usb2_phy2(omap);
261#endif
262
263#ifdef CONFIG_OMAP_USB3PHY1_HOST
264 omap_enable_usb3_phy(omap);
265 omap_usb3_phy_init(omap->usb3_phy);
266#endif
267}
268