1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
6 #define pr_fmt(fmt) "tegra-xusb-padctl: " fmt
10 #include <dm/of_access.h>
11 #include <dm/ofnode.h>
13 #include "../xusb-padctl-common.h"
15 #include <asm/arch/clock.h>
17 #include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 enum tegra210_function {
25 TEGRA210_FUNC_PCIE_X1,
26 TEGRA210_FUNC_PCIE_X4,
32 static const char *const tegra210_functions[] = {
43 static const unsigned int tegra210_otg_functions[] = {
50 static const unsigned int tegra210_usb_functions[] = {
55 static const unsigned int tegra210_pci_functions[] = {
56 TEGRA210_FUNC_PCIE_X1,
59 TEGRA210_FUNC_PCIE_X4,
62 #define TEGRA210_LANE(_name, _offset, _shift, _mask, _iddq, _funcs) \
69 .num_funcs = ARRAY_SIZE(tegra210_##_funcs##_functions), \
70 .funcs = tegra210_##_funcs##_functions, \
73 static const struct tegra_xusb_padctl_lane tegra210_lanes[] = {
74 TEGRA210_LANE("otg-0", 0x004, 0, 0x3, 0, otg),
75 TEGRA210_LANE("otg-1", 0x004, 2, 0x3, 0, otg),
76 TEGRA210_LANE("otg-2", 0x004, 4, 0x3, 0, otg),
77 TEGRA210_LANE("otg-3", 0x004, 6, 0x3, 0, otg),
78 TEGRA210_LANE("usb2-bias", 0x004, 18, 0x3, 0, otg),
79 TEGRA210_LANE("hsic-0", 0x004, 14, 0x1, 0, usb),
80 TEGRA210_LANE("hsic-1", 0x004, 15, 0x1, 0, usb),
81 TEGRA210_LANE("pcie-0", 0x028, 12, 0x3, 1, pci),
82 TEGRA210_LANE("pcie-1", 0x028, 14, 0x3, 2, pci),
83 TEGRA210_LANE("pcie-2", 0x028, 16, 0x3, 3, pci),
84 TEGRA210_LANE("pcie-3", 0x028, 18, 0x3, 4, pci),
85 TEGRA210_LANE("pcie-4", 0x028, 20, 0x3, 5, pci),
86 TEGRA210_LANE("pcie-5", 0x028, 22, 0x3, 6, pci),
87 TEGRA210_LANE("pcie-6", 0x028, 24, 0x3, 7, pci),
88 TEGRA210_LANE("sata-0", 0x028, 30, 0x3, 8, pci),
91 #define XUSB_PADCTL_ELPG_PROGRAM 0x024
92 #define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 31)
93 #define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 30)
94 #define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 29)
96 static int tegra_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
100 if (padctl->enable++ > 0)
103 value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
104 value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
105 padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
109 value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
110 value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
111 padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
115 value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
116 value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
117 padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
122 static int tegra_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
126 if (padctl->enable == 0) {
127 pr_err("unbalanced enable/disable");
131 if (--padctl->enable > 0)
134 value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
135 value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
136 padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
140 value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
141 value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
142 padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
146 value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
147 value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
148 padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
153 static int phy_prepare(struct tegra_xusb_phy *phy)
157 err = tegra_xusb_padctl_enable(phy->padctl);
161 reset_set_enable(PERIPH_ID_PEX_USB_UPHY, 0);
166 static int phy_unprepare(struct tegra_xusb_phy *phy)
168 reset_set_enable(PERIPH_ID_PEX_USB_UPHY, 1);
170 return tegra_xusb_padctl_disable(phy->padctl);
173 #define XUSB_PADCTL_USB3_PAD_MUX 0x28
174 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE (1 << 0)
175 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK0 (1 << 1)
176 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK1 (1 << 2)
177 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK2 (1 << 3)
178 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK3 (1 << 4)
179 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK4 (1 << 5)
180 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK5 (1 << 6)
181 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK6 (1 << 7)
182 #define XUSB_PADCTL_USB3_PAD_MUX_FORCE_SATA_PAD_IDDQ_DISABLE_MASK0 (1 << 8)
184 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1 0x360
185 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_FREQ_NDIV_MASK (0xff << 20)
186 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_FREQ_NDIV(x) (((x) & 0xff) << 20)
187 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_FREQ_MDIV_MASK (0x3 << 16)
188 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_LOCKDET_STATUS (1 << 15)
189 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_PWR_OVRD (1 << 4)
190 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_ENABLE (1 << 3)
191 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_SLEEP_MASK (0x3 << 1)
192 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_SLEEP(x) (((x) & 0x3) << 1)
193 #define XUSB_PADCTL_UPHY_PLL_P0_CTL1_IDDQ (1 << 0)
195 #define XUSB_PADCTL_UPHY_PLL_P0_CTL2 0x364
196 #define XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_CTRL_MASK (0xffffff << 4)
197 #define XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_CTRL(x) (((x) & 0xffffff) << 4)
198 #define XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_OVRD (1 << 2)
199 #define XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_DONE (1 << 1)
200 #define XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_EN (1 << 0)
202 #define XUSB_PADCTL_UPHY_PLL_P0_CTL4 0x36c
203 #define XUSB_PADCTL_UPHY_PLL_P0_CTL4_TXCLKREF_EN (1 << 15)
204 #define XUSB_PADCTL_UPHY_PLL_P0_CTL4_TXCLKREF_SEL_MASK (0x3 << 12)
205 #define XUSB_PADCTL_UPHY_PLL_P0_CTL4_TXCLKREF_SEL(x) (((x) & 0x3) << 12)
206 #define XUSB_PADCTL_UPHY_PLL_P0_CTL4_REFCLKBUF_EN (1 << 8)
207 #define XUSB_PADCTL_UPHY_PLL_P0_CTL4_REFCLK_SEL_MASK (0xf << 4)
209 #define XUSB_PADCTL_UPHY_PLL_P0_CTL5 0x370
210 #define XUSB_PADCTL_UPHY_PLL_P0_CTL5_DCO_CTRL_MASK (0xff << 16)
211 #define XUSB_PADCTL_UPHY_PLL_P0_CTL5_DCO_CTRL(x) (((x) & 0xff) << 16)
213 #define XUSB_PADCTL_UPHY_PLL_P0_CTL8 0x37c
214 #define XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_DONE (1 << 31)
215 #define XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_OVRD (1 << 15)
216 #define XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_CLK_EN (1 << 13)
217 #define XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_EN (1 << 12)
219 #define CLK_RST_XUSBIO_PLL_CFG0 0x51c
220 #define CLK_RST_XUSBIO_PLL_CFG0_SEQ_ENABLE (1 << 24)
221 #define CLK_RST_XUSBIO_PLL_CFG0_PADPLL_SLEEP_IDDQ (1 << 13)
222 #define CLK_RST_XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET (1 << 6)
223 #define CLK_RST_XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL (1 << 2)
224 #define CLK_RST_XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL (1 << 0)
226 static int pcie_phy_enable(struct tegra_xusb_phy *phy)
228 struct tegra_xusb_padctl *padctl = phy->padctl;
232 debug("> %s(phy=%p)\n", __func__, phy);
234 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
235 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_CTRL_MASK;
236 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_CTRL(0x136);
237 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
239 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL5);
240 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL5_DCO_CTRL_MASK;
241 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL5_DCO_CTRL(0x2a);
242 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL5);
244 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
245 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL1_PWR_OVRD;
246 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
248 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
249 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_OVRD;
250 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
252 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
253 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_OVRD;
254 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
256 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL4);
257 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL4_TXCLKREF_SEL_MASK;
258 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL4_REFCLK_SEL_MASK;
259 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL4_TXCLKREF_SEL(2);
260 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL4_TXCLKREF_EN;
261 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL4);
263 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
264 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_FREQ_MDIV_MASK;
265 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_FREQ_NDIV_MASK;
266 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL1_FREQ_NDIV(25);
267 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
269 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
270 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_IDDQ;
271 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
273 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
274 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_SLEEP_MASK;
275 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
279 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL4);
280 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL4_REFCLKBUF_EN;
281 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL4);
283 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
284 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_EN;
285 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
287 debug(" waiting for calibration\n");
289 start = get_timer(0);
291 while (get_timer(start) < 250) {
292 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
293 if (value & XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_DONE)
296 if (!(value & XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_DONE)) {
302 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
303 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_EN;
304 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
306 debug(" waiting for calibration to stop\n");
308 start = get_timer(0);
310 while (get_timer(start) < 250) {
311 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
312 if ((value & XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_DONE) == 0)
315 if (value & XUSB_PADCTL_UPHY_PLL_P0_CTL2_CAL_DONE) {
321 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
322 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL1_ENABLE;
323 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
325 debug(" waiting for PLL to lock...\n");
326 start = get_timer(0);
328 while (get_timer(start) < 250) {
329 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
330 if (value & XUSB_PADCTL_UPHY_PLL_P0_CTL1_LOCKDET_STATUS)
333 if (!(value & XUSB_PADCTL_UPHY_PLL_P0_CTL1_LOCKDET_STATUS)) {
339 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
340 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_CLK_EN;
341 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_EN;
342 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
344 debug(" waiting for register calibration...\n");
345 start = get_timer(0);
347 while (get_timer(start) < 250) {
348 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
349 if (value & XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_DONE)
352 if (!(value & XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_DONE)) {
358 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
359 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_EN;
360 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
362 debug(" waiting for register calibration to stop...\n");
363 start = get_timer(0);
365 while (get_timer(start) < 250) {
366 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
367 if ((value & XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_DONE) == 0)
370 if (value & XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_DONE) {
376 value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
377 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL8_RCAL_CLK_EN;
378 padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
380 debug("< %s()\n", __func__);
384 static int pcie_phy_disable(struct tegra_xusb_phy *phy)
389 static const struct tegra_xusb_phy_ops pcie_phy_ops = {
390 .prepare = phy_prepare,
391 .enable = pcie_phy_enable,
392 .disable = pcie_phy_disable,
393 .unprepare = phy_unprepare,
396 static struct tegra_xusb_phy tegra210_phys[] = {
398 .type = TEGRA_XUSB_PADCTL_PCIE,
399 .ops = &pcie_phy_ops,
404 static const struct tegra_xusb_padctl_soc tegra210_socdata = {
405 .lanes = tegra210_lanes,
406 .num_lanes = ARRAY_SIZE(tegra210_lanes),
407 .functions = tegra210_functions,
408 .num_functions = ARRAY_SIZE(tegra210_functions),
409 .phys = tegra210_phys,
410 .num_phys = ARRAY_SIZE(tegra210_phys),
413 void tegra_xusb_padctl_init(void)
419 debug("%s: start\n", __func__);
420 if (of_live_active()) {
421 struct device_node *np = of_find_compatible_node(NULL, NULL,
422 "nvidia,tegra210-xusb-padctl");
424 debug("np=%p\n", np);
426 nodes[0] = np_to_ofnode(np);
433 count = fdtdec_find_aliases_for_id(gd->fdt_blob, "padctl",
434 COMPAT_NVIDIA_TEGRA210_XUSB_PADCTL,
435 node_offsets, ARRAY_SIZE(node_offsets));
436 for (i = 0; i < count; i++)
437 nodes[i] = offset_to_ofnode(node_offsets[i]);
440 ret = tegra_xusb_process_nodes(nodes, count, &tegra210_socdata);
441 debug("%s: done, ret=%d\n", __func__, ret);
444 void tegra_xusb_padctl_exit(void)
448 debug("> %s\n", __func__);
450 value = padctl_readl(&padctl, XUSB_PADCTL_USB3_PAD_MUX);
451 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE;
452 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK0;
453 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK1;
454 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK2;
455 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK3;
456 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK4;
457 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK5;
458 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_PCIE_PAD_IDDQ_DISABLE_MASK6;
459 value &= ~XUSB_PADCTL_USB3_PAD_MUX_FORCE_SATA_PAD_IDDQ_DISABLE_MASK0;
460 padctl_writel(&padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
462 value = padctl_readl(&padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
463 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_IDDQ;
464 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_SLEEP_MASK;
465 value |= XUSB_PADCTL_UPHY_PLL_P0_CTL1_SLEEP(3);
466 value &= ~XUSB_PADCTL_UPHY_PLL_P0_CTL1_ENABLE;
467 padctl_writel(&padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
469 reset_set_enable(PERIPH_ID_PEX_USB_UPHY, 1);
470 while (padctl.enable)
471 tegra_xusb_padctl_disable(&padctl);
473 debug("< %s()\n", __func__);