1 /*-
2  * Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33 #include <sys/lock.h>
34 #include <sys/mutex.h>
35 #include <sys/rman.h>
36 
37 #include <machine/bus.h>
38 
39 #include <dev/extres/clk/clk.h>
40 
41 #include <dt-bindings/clock/tegra124-car.h>
42 #include "tegra124_car.h"
43 
44 /* The TEGRA124_CLK_XUSB_GATE is missing in current
45  * DT bindings, define it localy
46  */
47 #ifdef TEGRA124_CLK_XUSB_GATE
48 #error "TEGRA124_CLK_XUSB_GATE is now defined, revisit XUSB code!"
49 #else
50 #define TEGRA124_CLK_XUSB_GATE 143
51 #endif
52 
53 /* Bits in base register. */
54 #define	PERLCK_AMUX_MASK	0x0F
55 #define	PERLCK_AMUX_SHIFT	16
56 #define	PERLCK_AMUX_DIS		(1 << 20)
57 #define	PERLCK_UDIV_DIS		(1 << 24)
58 #define	PERLCK_ENA_MASK		(1 << 28)
59 #define	PERLCK_MUX_SHIFT	29
60 #define	PERLCK_MUX_MASK		0x07
61 
62 struct periph_def {
63 	struct clknode_init_def	clkdef;
64 	uint32_t		base_reg;
65 	uint32_t		div_width;
66 	uint32_t		div_mask;
67 	uint32_t		div_f_width;
68 	uint32_t		div_f_mask;
69 	uint32_t		flags;
70 };
71 
72 struct pgate_def {
73 	struct clknode_init_def	clkdef;
74 	uint32_t		idx;
75 	uint32_t		flags;
76 };
77 #define	PLIST(x) static const char *x[]
78 
79 #define	GATE(_id, cname, plist, _idx)					\
80 {									\
81 	.clkdef.id = TEGRA124_CLK_##_id,				\
82 	.clkdef.name = cname,						\
83 	.clkdef.parent_names = (const char *[]){plist},			\
84 	.clkdef.parent_cnt = 1,						\
85 	.clkdef.flags = CLK_NODE_STATIC_STRINGS,			\
86 	.idx = _idx,							\
87 	.flags = 0,							\
88 }
89 
90 /* Sources for multiplexors. */
91 PLIST(mux_a_N_audio_N_p_N_clkm) =
92     {"pllA_out0", NULL, "audio",  NULL,
93      "pllP_out0", NULL, "clk_m"};
94 PLIST(mux_a_N_audio0_N_p_N_clkm) =
95     {"pllA_out0", NULL, "audio0", NULL,
96      "pllP_out0", NULL, "clk_m"};
97 PLIST(mux_a_N_audio1_N_p_N_clkm) =
98     {"pllA_out0", NULL, "audio1", NULL,
99      "pllP_out0", NULL, "clk_m"};
100 PLIST(mux_a_N_audio2_N_p_N_clkm) =
101     {"pllA_out0", NULL, "audio2", NULL,
102      "pllP_out0", NULL, "clk_m"};
103 PLIST(mux_a_N_audio3_N_p_N_clkm) =
104     {"pllA_out0", NULL, "audio3", NULL,
105      "pllP_out0", NULL, "clk_m"};
106 PLIST(mux_a_N_audio4_N_p_N_clkm) =
107     {"pllA_out0", NULL, "audio4", NULL,
108      "pllP_out0", NULL, "clk_m"};
109 PLIST(mux_a_clks_p_clkm_e) =
110     {"pllA_out0", "clk_s", "pllP_out0",
111      "clk_m", "pllE_out0"};
112 PLIST(mux_a_c2_c_c3_p_N_clkm) =
113     {"pllA_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
114      "pllP_out0", NULL, "clk_m"};
115 
116 PLIST(mux_m_c_p_a_c2_c3) =
117     {"pllM_out0", "pllC_out0", "pllP_out0", "pllA_out0",
118      "pllC2_out0", "pllC3_out0"};
119 PLIST(mux_m_c_p_a_c2_c3_clkm) =
120     {"pllM_out0", "pllC_out0", "pllP_out0", "pllA_out0",
121      "pllC2_out0", "pllC3_out0", "clk_m"};
122 PLIST(mux_m_c_p_a_c2_c3_clkm_c4) =
123     {"pllM_out0", "pllC_out0", "pllP_out0", "pllA_out0",
124      "pllC2_out0", "pllC3_out0", "clk_m", "pllC4_out0"};
125 PLIST(mux_m_c_p_clkm_mud_c2_c3) =
126     {"pllM_out0", "pllC_out0", "pllP_out0", "clk_m",
127      "pllM_UD", "pllC2_out0", "pllC3_out0"};
128 PLIST(mux_m_c_p_clkm_mud_c2_c3_cud) =
129     {"pllM_out0", "pllC_out0", "pllP_out0", "clk_m",
130      "pllM_UD", "pllC2_out0", "pllC3_out0", "pllC_UD"};
131 
132 PLIST(mux_m_c2_c_c3_p_N_a) =
133     {"pllM_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
134      "pllP_out0", NULL, "pllA_out0"};
135 PLIST(mux_m_c2_c_c3_p_N_a_c4) =
136     {"pllM_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
137      NULL, "pllA_out0", "pllC4_out0"};
138 
139 PLIST(mux_p_N_c_N_N_N_clkm) =
140     {"pllP_out0", NULL, "pllC_out0", NULL,
141      NULL, NULL, "clk_m"};
142 PLIST(mux_p_N_c_N_m_N_clkm) =
143     {"pllP_out0", NULL, "pllC_out0", NULL,
144      "pllM_out0", NULL, "clk_m"};
145 PLIST(mux_p_c_c2_clkm) =
146     {"pllP_out0", "pllC_out0", "pllC2_out0", "clk_m"};
147 PLIST(mux_p_c2_c_c3_m) =
148     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
149      "pllM_out0"};
150 PLIST(mux_p_c2_c_c3_m_N_clkm) =
151     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
152      "pllM_out0", NULL, "clk_m"};
153 PLIST(mux_p_c2_c_c3_m_e_clkm) =
154     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
155      "pllM_out0", "pllE_out0", "clk_m"};
156 PLIST(mux_p_c2_c_c3_m_a_clkm) =
157     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
158      "pllM_out0", "pllA_out0", "clk_m"};
159 PLIST(mux_p_c2_c_c3_m_clks_clkm) =
160     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
161      "pllM_out0", "clk_s", "clk_m"};
162 PLIST(mux_p_c2_c_c3_clks_N_clkm) =
163     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
164      "clk_s", NULL, "clk_m"};
165 PLIST(mux_p_c2_c_c3_clkm_N_clks) =
166     {"pllP_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
167      "clk_m", NULL, "clk_s"};
168 PLIST(mux_p_clkm_clks_E) =
169     {"pllP_out0", "clk_m", "clk_s", "pllE_out0"};
170 PLIST(mux_p_m_d_a_c_d2_clkm) =
171     {"pllP_out0", "pllM_out0", "pllD_out0", "pllA_out0",
172      "pllC_out0", "pllD2_out0", "clk_m"};
173 
174 PLIST(mux_clkm_N_u48_N_p_N_u480) =
175     {"clk_m", NULL, "pllU_48", NULL,
176      "pllP_out0", NULL, "pllU_480"};
177 PLIST(mux_clkm_p_c2_c_c3_refre) =
178     {"clk_m", "pllP_out0", "pllC2_out0", "pllC_out0",
179      "pllC3_out0", "pllREFE_out"};
180 PLIST(mux_clkm_refe_clks_u480_c_c2_c3_oscdiv) =
181     {"clk_m", "pllREFE_out", "clk_s", "pllU_480",
182      "pllC_out0", "pllC2_out0", "pllC3_out0", "osc_div_clk"};
183 
184 PLIST(mux_sep_audio) =
185    {"pllA_out0", "pllC2_out0", "pllC_out0", "pllC3_out0",
186     "pllP_out0", NULL, "clk_m", NULL,
187     "spdif_in", "i2s0", "i2s1", "i2s2",
188     "i2s4", "pllA_out0", "ext_vimclk"};
189 
190 static uint32_t clk_enable_reg[] = {
191 	CLK_OUT_ENB_L,
192 	CLK_OUT_ENB_H,
193 	CLK_OUT_ENB_U,
194 	CLK_OUT_ENB_V,
195 	CLK_OUT_ENB_W,
196 	CLK_OUT_ENB_X,
197 };
198 
199 static uint32_t clk_reset_reg[] = {
200 	RST_DEVICES_L,
201 	RST_DEVICES_H,
202 	RST_DEVICES_U,
203 	RST_DEVICES_V,
204 	RST_DEVICES_W,
205 	RST_DEVICES_X,
206 };
207 
208 #define	L(n)  ((0 * 32) + (n))
209 #define	H(n)  ((1 * 32) + (n))
210 #define	U(n)  ((2 * 32) + (n))
211 #define	V(n)  ((3 * 32) + (n))
212 #define	W(n)  ((4 * 32) + (n))
213 #define	X(n)  ((5 * 32) + (n))
214 
215 static struct pgate_def pgate_def[] = {
216 	/* bank L ->  0-31 */
217 	/* GATE(CPU, "cpu", "clk_m", L(0)), */
218 	GATE(ISPB, "ispb", "clk_m", L(3)),
219 	GATE(RTC, "rtc", "clk_s", L(4)),
220 	GATE(TIMER, "timer", "clk_m", L(5)),
221 	GATE(UARTA, "uarta", "pc_uarta" , L(6)),
222 	GATE(UARTB, "uartb", "pc_uartb", L(7)),
223 	GATE(VFIR, "vfir", "pc_vfir", L(7)),
224 	/* GATE(GPIO, "gpio", "clk_m", L(8)), */
225 	GATE(SDMMC2, "sdmmc2", "pc_sdmmc2", L(9)),
226 	GATE(SPDIF_OUT, "spdif_out", "pc_spdif_out", L(10)),
227 	GATE(SPDIF_IN, "spdif_in", "pc_spdif_in", L(10)),
228 	GATE(I2S1, "i2s1", "pc_i2s1", L(11)),
229 	GATE(I2C1, "i2c1", "pc_i2c1", L(12)),
230 	GATE(SDMMC1, "sdmmc1", "pc_sdmmc1", L(14)),
231 	GATE(SDMMC4, "sdmmc4", "pc_sdmmc4", L(15)),
232 	GATE(PWM, "pwm", "pc_pwm", L(17)),
233 	GATE(I2S2, "i2s2", "pc_i2s2", L(18)),
234 	GATE(VI, "vi", "pc_vi", L(20)),
235 	GATE(USBD, "usbd", "clk_m", L(22)),
236 	GATE(ISP, "isp", "pc_isp", L(23)),
237 	GATE(DISP2, "disp2", "pc_disp2", L(26)),
238 	GATE(DISP1, "disp1", "pc_disp1", L(27)),
239 	GATE(HOST1X, "host1x", "pc_host1x", L(28)),
240 	GATE(VCP, "vcp", "clk_m", L(29)),
241 	GATE(I2S0, "i2s0", "pc_i2s0", L(30)),
242 	/* GATE(CACHE2, "ccache2", "clk_m", L(31)), */
243 
244 	/* bank H -> 32-63 */
245 	GATE(MC, "mem", "clk_m", H(0)),
246 	/* GATE(AHBDMA, "ahbdma", "clk_m", H(1)), */
247 	GATE(APBDMA, "apbdma", "clk_m", H(2)),
248 	GATE(KBC, "kbc", "clk_s", H(4)),
249 	/* GATE(STAT_MON, "stat_mon", "clk_s", H(5)), */
250 	/* GATE(PMC, "pmc", "clk_s", H(6)), */
251 	GATE(FUSE, "fuse", "clk_m", H(7)),
252 	GATE(KFUSE, "kfuse", "clk_m", H(8)),
253 	GATE(SBC1, "spi1", "pc_spi1", H(9)),
254 	GATE(NOR, "snor", "pc_snor", H(10)),
255 	/* GATE(JTAG2TBC, "jtag2tbc", "clk_m", H(11)), */
256 	GATE(SBC2, "spi2", "pc_spi2", H(12)),
257 	GATE(SBC3, "spi3", "pc_spi3", H(14)),
258 	GATE(I2C5, "i2c5", "pc_i2c5", H(15)),
259 	GATE(DSIA, "dsia", "dsia_mux", H(16)),
260 	GATE(MIPI, "hsi", "pc_hsi", H(18)),
261 	GATE(HDMI, "hdmi", "pc_hdmi", H(19)),
262 	GATE(CSI, "csi", "pllP_out3", H(20)),
263 	GATE(I2C2, "i2c2", "pc_i2c2", H(22)),
264 	GATE(UARTC, "uartc", "pc_uartc", H(23)),
265 	GATE(MIPI_CAL, "mipi_cal", "clk_m", H(24)),
266 	GATE(EMC, "emc", "pc_emc_2x", H(25)),
267 	GATE(USB2, "usb2", "clk_m", H(26)),
268 	GATE(USB3, "usb3", "clk_m", H(27)),
269 	GATE(VDE, "vde", "pc_vde", H(29)),
270 	GATE(BSEA, "bsea", "clk_m", H(30)),
271 	GATE(BSEV, "bsev", "clk_m", H(31)),
272 
273 	/* bank U  -> 64-95 */
274 	GATE(UARTD, "uartd", "pc_uartd", U(1)),
275 	GATE(I2C3, "i2c3", "pc_i2c3", U(3)),
276 	GATE(SBC4, "spi4", "pc_spi4", U(4)),
277 	GATE(SDMMC3, "sdmmc3", "pc_sdmmc3", U(5)),
278 	GATE(PCIE, "pcie", "clk_m", U(6)),
279 	GATE(OWR, "owr", "pc_owr", U(7)),
280 	GATE(AFI, "afi", "clk_m", U(8)),
281 	GATE(CSITE, "csite", "pc_csite", U(9)),
282 	/* GATE(AVPUCQ, "avpucq", clk_m, U(11)), */
283 	GATE(TRACE, "traceclkin", "pc_traceclkin", U(13)),
284 	GATE(SOC_THERM, "soc_therm", "pc_soc_therm", U(14)),
285 	GATE(DTV, "dtv", "clk_m", U(15)),
286 	GATE(I2CSLOW, "i2c_slow", "pc_i2c_slow", U(17)),
287 	GATE(DSIB, "dsib", "dsib_mux", U(18)),
288 	GATE(TSEC, "tsec", "pc_tsec", U(19)),
289 	/* GATE(IRAMA, "irama", "clk_m", U(20)), */
290 	/* GATE(IRAMB, "iramb", "clk_m", U(21)), */
291 	/* GATE(IRAMC, "iramc", "clk_m", U(22)), */
292 	/* GATE(IRAMD, "iramd", "clk_m", U(23)), */
293 	/* GATE(CRAM2, "cram2", "clk_m", U(24)), */
294 	GATE(XUSB_HOST, "xusb_core_host", "pc_xusb_core_host", U(25)),
295 	/* GATE(M_DOUBLER, "m_doubler", "clk_m", U(26)), */
296 	GATE(MSENC, "msenc", "pc_msenc", U(27)),
297 	GATE(CSUS, "sus_out", "clk_m", U(28)),
298 	/* GATE(DEVD2_OUT, "devd2_out", "clk_m", U(29)), */
299 	/* GATE(DEVD1_OUT, "devd1_out", "clk_m", U(30)), */
300 	GATE(XUSB_DEV, "xusb_core_dev", "pc_xusb_core_dev", U(31)),
301 
302 	/* bank V  -> 96-127 */
303 	/* GATE(CPUG, "cpug", "clk_m", V(0)), */
304 	/* GATE(CPULP, "cpuLP", "clk_m", V(1)), */
305 	GATE(MSELECT, "mselect", "pc_mselect", V(3)),
306 	GATE(TSENSOR, "tsensor", "pc_tsensor", V(4)),
307 	GATE(I2S3, "i2s3", "pc_i2s3", V(5)),
308 	GATE(I2S4, "i2s4", "pc_i2s4", V(6)),
309 	GATE(I2C4, "i2c4", "pc_i2c4", V(7)),
310 	GATE(SBC5, "spi5", "pc_spi5", V(8)),
311 	GATE(SBC6, "spi6", "pc_spi6", V(9)),
312 	GATE(D_AUDIO, "audio", "pc_audio", V(10)),
313 	GATE(APBIF, "apbif", "clk_m", V(11)),
314 	GATE(DAM0, "dam0", "pc_dam0", V(12)),
315 	GATE(DAM1, "dam1", "pc_dam1", V(13)),
316 	GATE(DAM2, "dam2",  "pc_dam2", V(14)),
317 	GATE(HDA2CODEC_2X, "hda2codec_2x", "pc_hda2codec_2x", V(15)),
318 	/* GATE(ATOMICS, "atomics", "clk_m", V(16)), */
319 	/* GATE(SPDIF_DOUBLER, "spdif_doubler", "clk_m", V(22)), */
320 	GATE(ACTMON, "actmon", "pc_actmon", V(23)),
321 	GATE(EXTERN1, "extperiph1", "pc_extperiph1", V(24)),
322 	GATE(EXTERN2, "extperiph2", "pc_extperiph2", V(25)),
323 	GATE(EXTERN3, "extperiph3", "pc_extperiph3", V(26)),
324 	GATE(SATA_OOB, "sata_oob", "pc_sata_oob", V(27)),
325 	GATE(SATA, "sata", "pc_sata", V(28)),
326 	GATE(HDA, "hda", "pc_hda", V(29)),
327 
328 	/* bank W   -> 128-159*/
329 	GATE(HDA2HDMI, "hda2hdmi", "clk_m", W(0)),
330 	GATE(SATA_COLD, "sata_cold", "clk_m", W(1)), /* Reset only */
331 	/* GATE(PCIERX0, "pcierx0", "clk_m", W(2)), */
332 	/* GATE(PCIERX1, "pcierx1", "clk_m", W(3)), */
333 	/* GATE(PCIERX2, "pcierx2", "clk_m", W(4)), */
334 	/* GATE(PCIERX3, "pcierx3", "clk_m", W(5)), */
335 	/* GATE(PCIERX4, "pcierx4", "clk_m", W(6)), */
336 	/* GATE(PCIERX5, "pcierx5", "clk_m", W(7)), */
337 	/* GATE(CEC, "cec", "clk_m", W(8)), */
338 	/* GATE(PCIE2_IOBIST, "pcie2_iobist", "clk_m", W(9)), */
339 	/* GATE(EMC_IOBIST, "emc_iobist", "clk_m", W(10)), */
340 	/* GATE(HDMI_IOBIST, "hdmi_iobist", "clk_m", W(11)), */
341 	/* GATE(SATA_IOBIST, "sata_iobist", "clk_m", W(12)), */
342 	/* GATE(MIPI_IOBIST, "mipi_iobist", "clk_m", W(13)), */
343 	GATE(XUSB_GATE, "xusb_gate", "clk_m", W(15)),
344 	GATE(CILAB, "cilab", "pc_cilab", W(16)),
345 	GATE(CILCD, "cilcd", "pc_cilcd", W(17)),
346 	GATE(CILE, "cile", "pc_cile", W(18)),
347 	GATE(DSIALP, "dsia_lp", "pc_dsia_lp", W(19)),
348 	GATE(DSIBLP, "dsib_lp", "pc_dsib_lp", W(20)),
349 	GATE(ENTROPY, "entropy", "pc_entropy", W(21)),
350 	GATE(AMX, "amx", "pc_amx", W(25)),
351 	GATE(ADX, "adx", "pc_adx", W(26)),
352 	GATE(DFLL_REF, "dvfs_ref", "pc_dvfs_ref", W(27)),
353 	GATE(DFLL_SOC, "dvfs_soc", "pc_dvfs_soc",  W(27)),
354 	GATE(XUSB_SS, "xusb_ss", "xusb_ss_mux", W(28)),
355 	/* GATE(EMC_LATENCY, "emc_latency", "pc_emc_latency", W(29)), */
356 
357 	/* bank X -> 160-191*/
358 	/* GATE(SPARE, "spare", "clk_m", X(0)), */
359 	/* GATE(CAM_MCLK, "CAM_MCLK", "clk_m", X(4)), */
360 	/* GATE(CAM_MCLK2, "CAM_MCLK2", "clk_m", X(5)), */
361 	GATE(I2C6, "i2c6", "pc_i2c6", X(6)),
362 	GATE(VIM2_CLK, "vim2_clk", "clk_m", X(11)),
363 	/* GATE(EMC_DLL, "emc_dll", "pc_emc_dll", X(14)), */
364 	GATE(HDMI_AUDIO, "hdmi_audio", "pc_hdmi_audio", X(16)),
365 	GATE(CLK72MHZ, "clk72mhz", "pc_clk72mhz", X(17)),
366 	GATE(VIC03, "vic", "pc_vic", X(18)),
367 	GATE(ADX1, "adx1", "pc_adx1", X(20)),
368 	GATE(DPAUX, "dpaux", "clk_m", X(21)),
369 	GATE(SOR0_LVDS, "sor0", "pc_sor0", X(22)),
370 	GATE(GPU, "gpu", "osc_div_clk", X(24)),
371 	GATE(AMX1, "amx1", "pc_amx1", X(26)),
372 };
373 
374 /* Peripheral clock clock */
375 #define	DCF_HAVE_MUX		0x0100 /* Block with multipexor */
376 #define	DCF_HAVE_ENA		0x0200 /* Block with enable bit */
377 #define	DCF_HAVE_DIV		0x0400 /* Block with divider */
378 
379 /* Mark block with additional bits / functionality. */
380 #define	DCF_IS_MASK		0x00FF
381 #define	DCF_IS_UART		0x0001
382 #define	DCF_IS_VI		0x0002
383 #define	DCF_IS_HOST1X		0x0003
384 #define	DCF_IS_XUSB_SS		0x0004
385 #define	DCF_IS_EMC_DLL		0x0005
386 #define	DCF_IS_SATA		0x0006
387 #define	DCF_IS_VIC		0x0007
388 #define	DCF_IS_AUDIO		0x0008
389 #define	DCF_IS_SOR0		0x0009
390 #define	DCF_IS_EMC		0x000A
391 
392 /* Basic pheripheral clock */
393 #define	PER_CLK(_id, cn, pl, r, diw, fiw, f)				\
394 {									\
395 	.clkdef.id = _id,						\
396 	.clkdef.name = cn,						\
397 	.clkdef.parent_names = pl,					\
398 	.clkdef.parent_cnt = nitems(pl),				\
399 	.clkdef.flags = CLK_NODE_STATIC_STRINGS,			\
400 	.base_reg = r,							\
401 	.div_width = diw,						\
402 	.div_f_width = fiw,						\
403 	.flags = f,							\
404 }
405 
406 /* Mux with fractional 8.1 divider. */
407 #define	CLK_8_1(id, cn, pl, r,  f)					\
408 	PER_CLK(id, cn, pl, r,  8, 1, (f) | DCF_HAVE_MUX | DCF_HAVE_DIV)
409 
410 /* Mux with fractional 16.1 divider. */
411 #define	CLK16_1(id, cn, pl, r,  f)					\
412 	PER_CLK(id, cn, pl, r,  16, 1, (f) | DCF_HAVE_MUX | DCF_HAVE_DIV)
413 /* Mux with integer 16bits divider. */
414 #define	CLK16_0(id, cn, pl, r,  f)					\
415 	PER_CLK(id, cn, pl, r,  16, 0, (f) | DCF_HAVE_MUX | DCF_HAVE_DIV)
416 /* Mux wihout divider. */
417 #define	CLK_0_0(id, cn, pl, r,  f)					\
418 	PER_CLK(id, cn, pl, r,  0, 0, (f) | DCF_HAVE_MUX)
419 
420 static struct periph_def periph_def[] = {
421 	CLK_8_1(0, "pc_i2s1", mux_a_N_audio1_N_p_N_clkm, CLK_SOURCE_I2S1, DCF_HAVE_ENA),
422 	CLK_8_1(0, "pc_i2s2", mux_a_N_audio2_N_p_N_clkm, CLK_SOURCE_I2S2, DCF_HAVE_ENA),
423 	CLK_8_1(0, "pc_spdif_out", mux_a_N_audio_N_p_N_clkm, CLK_SOURCE_SPDIF_OUT, 0),
424 	CLK_8_1(0, "pc_spdif_in", mux_p_c2_c_c3_m, CLK_SOURCE_SPDIF_IN, 0),
425 	CLK_8_1(0, "pc_pwm", mux_p_c2_c_c3_clks_N_clkm, CLK_SOURCE_PWM, 0),
426 	CLK_8_1(0, "pc_spi2", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_SPI2, 0),
427 	CLK_8_1(0, "pc_spi3", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_SPI3, 0),
428 	CLK16_0(0, "pc_i2c5", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_I2C5, 0),
429 	CLK16_0(0, "pc_i2c1", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_I2C1, 0),
430 	CLK_8_1(0, "pc_spi1", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_SPI1, 0),
431 	CLK_0_0(0, "pc_disp1", mux_p_m_d_a_c_d2_clkm, CLK_SOURCE_DISP1, 0),
432 	CLK_0_0(0, "pc_disp2", mux_p_m_d_a_c_d2_clkm, CLK_SOURCE_DISP2, 0),
433 	CLK_8_1(0, "pc_isp", mux_m_c_p_a_c2_c3_clkm_c4, CLK_SOURCE_ISP, 0),
434 	CLK_8_1(0, "pc_vi", mux_m_c2_c_c3_p_N_a_c4, CLK_SOURCE_VI, DCF_IS_VI),
435 	CLK_8_1(0, "pc_sdmmc1", mux_p_c2_c_c3_m_e_clkm, CLK_SOURCE_SDMMC1, 0),
436 	CLK_8_1(0, "pc_sdmmc2", mux_p_c2_c_c3_m_e_clkm, CLK_SOURCE_SDMMC2, 0),
437 	CLK_8_1(0, "pc_sdmmc4", mux_p_c2_c_c3_m_e_clkm, CLK_SOURCE_SDMMC4, 0),
438 	CLK_8_1(0, "pc_vfir", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_VFIR, 0),
439 	CLK_8_1(0, "pc_hsi", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_HSI, 0),
440 	CLK16_1(0, "pc_uarta", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_UARTA, DCF_IS_UART),
441 	CLK16_1(0, "pc_uartb", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_UARTB, DCF_IS_UART),
442 	CLK_8_1(0, "pc_host1x", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_HOST1X, DCF_IS_HOST1X),
443 	CLK_8_1(0, "pc_hdmi", mux_p_m_d_a_c_d2_clkm, CLK_SOURCE_HDMI, 0),
444 	CLK16_0(0, "pc_i2c2", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_I2C2, 0),
445 	CLK_8_1(0, "pc_emc_2x", mux_m_c_p_clkm_mud_c2_c3_cud, CLK_SOURCE_EMC, DCF_IS_EMC),
446 	CLK16_1(0, "pc_uartc", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_UARTC, DCF_IS_UART),
447 	CLK_8_1(0, "pc_vi_sensor", mux_m_c2_c_c3_p_N_a, CLK_SOURCE_VI_SENSOR, 0),
448 	CLK_8_1(0, "pc_spi4", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_SPI4, 0),
449 	CLK16_0(0, "pc_i2c3", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_I2C3, 0),
450 	CLK_8_1(0, "pc_sdmmc3", mux_p_c2_c_c3_m_e_clkm, CLK_SOURCE_SDMMC3, 0),
451 	CLK16_1(0, "pc_uartd", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_UARTD, DCF_IS_UART),
452 	CLK_8_1(0, "pc_vde", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_VDE, 0),
453 	CLK_8_1(0, "pc_owr", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_OWR, 0),
454 	CLK_8_1(0, "pc_snor", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_NOR, 0),
455 	CLK_8_1(0, "pc_csite", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_CSITE, 0),
456 	CLK_8_1(0, "pc_i2s0", mux_a_N_audio0_N_p_N_clkm, CLK_SOURCE_I2S0, 0),
457 /* DTV xxx */
458 	CLK_8_1(0, "pc_msenc", mux_m_c2_c_c3_p_N_a, CLK_SOURCE_MSENC, 0),
459 	CLK_8_1(0, "pc_tsec", mux_p_c2_c_c3_m_a_clkm, CLK_SOURCE_TSEC, 0),
460 /* SPARE2 */
461 
462 	CLK_8_1(0, "pc_mselect", mux_p_c2_c_c3_m_clks_clkm, CLK_SOURCE_MSELECT, 0),
463 	CLK_8_1(0, "pc_tsensor", mux_p_c2_c_c3_clkm_N_clks, CLK_SOURCE_TSENSOR, 0),
464 	CLK_8_1(0, "pc_i2s3", mux_a_N_audio3_N_p_N_clkm, CLK_SOURCE_I2S3, DCF_HAVE_ENA),
465 	CLK_8_1(0, "pc_i2s4", mux_a_N_audio4_N_p_N_clkm, CLK_SOURCE_I2S4, DCF_HAVE_ENA),
466 	CLK16_0(0, "pc_i2c4", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_I2C4, 0),
467 	CLK_8_1(0, "pc_spi5", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_SPI5, 0),
468 	CLK_8_1(0, "pc_spi6", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_SPI6, 0),
469 	CLK_8_1(0, "pc_audio", mux_sep_audio, CLK_SOURCE_AUDIO, DCF_IS_AUDIO),
470 	CLK_8_1(0, "pc_dam0", mux_sep_audio, CLK_SOURCE_DAM0, DCF_IS_AUDIO),
471 	CLK_8_1(0, "pc_dam1", mux_sep_audio, CLK_SOURCE_DAM1, DCF_IS_AUDIO),
472 	CLK_8_1(0, "pc_dam2",  mux_sep_audio, CLK_SOURCE_DAM2, DCF_IS_AUDIO),
473 	CLK_8_1(0, "pc_hda2codec_2x", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_HDA2CODEC_2X, 0),
474 	CLK_8_1(0, "pc_actmon", mux_p_c2_c_c3_clks_N_clkm, CLK_SOURCE_ACTMON, 0),
475 	CLK_8_1(0, "pc_extperiph1", mux_a_clks_p_clkm_e, CLK_SOURCE_EXTPERIPH1, 0),
476 	CLK_8_1(0, "pc_extperiph2", mux_a_clks_p_clkm_e, CLK_SOURCE_EXTPERIPH2,  0),
477 	CLK_8_1(0, "pc_extperiph3", mux_a_clks_p_clkm_e, CLK_SOURCE_EXTPERIPH3, 0),
478 	CLK_8_1(0, "pc_i2c_slow", mux_p_c2_c_c3_clks_N_clkm, CLK_SOURCE_I2C_SLOW, 0),
479 /* SYS */
480 	CLK_8_1(0, "pc_sor0", mux_p_m_d_a_c_d2_clkm,  CLK_SOURCE_SOR0, DCF_IS_SOR0),
481 	CLK_8_1(0, "pc_sata_oob", mux_p_N_c_N_m_N_clkm, CLK_SOURCE_SATA_OOB, 0),
482 	CLK_8_1(0, "pc_sata", mux_p_N_c_N_m_N_clkm, CLK_SOURCE_SATA, DCF_IS_SATA),
483 	CLK_8_1(0, "pc_hda", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_HDA, 0),
484 	CLK_8_1(TEGRA124_CLK_XUSB_HOST_SRC,
485 		   "pc_xusb_core_host", mux_clkm_p_c2_c_c3_refre, CLK_SOURCE_XUSB_CORE_HOST, 0),
486 	CLK_8_1(TEGRA124_CLK_XUSB_FALCON_SRC,
487 		   "pc_xusb_falcon", mux_clkm_p_c2_c_c3_refre, CLK_SOURCE_XUSB_FALCON, 0),
488 	CLK_8_1(TEGRA124_CLK_XUSB_FS_SRC,
489 		   "pc_xusb_fs", mux_clkm_N_u48_N_p_N_u480, CLK_SOURCE_XUSB_FS, 0),
490 	CLK_8_1(TEGRA124_CLK_XUSB_DEV_SRC,
491 		   "pc_xusb_core_dev", mux_clkm_p_c2_c_c3_refre, CLK_SOURCE_XUSB_CORE_DEV, 0),
492 	CLK_8_1(TEGRA124_CLK_XUSB_SS_SRC,
493 		   "pc_xusb_ss", mux_clkm_refe_clks_u480_c_c2_c3_oscdiv, CLK_SOURCE_XUSB_SS, DCF_IS_XUSB_SS),
494 	CLK_8_1(0, "pc_cilab", mux_p_N_c_N_N_N_clkm, CLK_SOURCE_CILAB, 0),
495 	CLK_8_1(0, "pc_cilcd", mux_p_N_c_N_N_N_clkm, CLK_SOURCE_CILCD, 0),
496 	CLK_8_1(0, "pc_cile", mux_p_N_c_N_N_N_clkm, CLK_SOURCE_CILE, 0),
497 	CLK_8_1(0, "pc_dsia_lp", mux_p_N_c_N_N_N_clkm, CLK_SOURCE_DSIA_LP, 0),
498 	CLK_8_1(0, "pc_dsib_lp", mux_p_N_c_N_N_N_clkm, CLK_SOURCE_DSIB_LP, 0),
499 	CLK_8_1(0, "pc_entropy", mux_p_clkm_clks_E, CLK_SOURCE_ENTROPY, 0),
500 	CLK_8_1(0, "pc_dvfs_ref", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_DVFS_REF, DCF_HAVE_ENA),
501 	CLK_8_1(0, "pc_dvfs_soc", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_DVFS_SOC, DCF_HAVE_ENA),
502 	CLK_8_1(0, "pc_traceclkin", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_TRACECLKIN, 0),
503 	CLK_8_1(0, "pc_adx", mux_a_c2_c_c3_p_N_clkm, CLK_SOURCE_ADX, DCF_HAVE_ENA),
504 	CLK_8_1(0, "pc_amx", mux_a_c2_c_c3_p_N_clkm, CLK_SOURCE_AMX, DCF_HAVE_ENA),
505 	CLK_8_1(0, "pc_emc_latency", mux_m_c_p_clkm_mud_c2_c3, CLK_SOURCE_EMC_LATENCY, 0),
506 	CLK_8_1(0, "pc_soc_therm", mux_m_c_p_a_c2_c3, CLK_SOURCE_SOC_THERM, 0),
507 	CLK_8_1(0, "pc_vi_sensor2", mux_m_c2_c_c3_p_N_a, CLK_SOURCE_VI_SENSOR2, 0),
508 	CLK16_0(0, "pc_i2c6", mux_p_c2_c_c3_m_N_clkm, CLK_SOURCE_I2C6, 0),
509 	CLK_8_1(0, "pc_emc_dll", mux_m_c_p_clkm_mud_c2_c3, CLK_SOURCE_EMC_DLL, DCF_IS_EMC_DLL),
510 	CLK_8_1(0, "pc_hdmi_audio", mux_p_c_c2_clkm, CLK_SOURCE_HDMI_AUDIO, 0),
511 	CLK_8_1(0, "pc_clk72mhz", mux_p_c_c2_clkm, CLK_SOURCE_CLK72MHZ, 0),
512 	CLK_8_1(0, "pc_adx1", mux_a_c2_c_c3_p_N_clkm, CLK_SOURCE_ADX1, DCF_HAVE_ENA),
513 	CLK_8_1(0, "pc_amx1", mux_a_c2_c_c3_p_N_clkm, CLK_SOURCE_AMX1, DCF_HAVE_ENA),
514 	CLK_8_1(0, "pc_vic", mux_m_c_p_a_c2_c3_clkm, CLK_SOURCE_VIC, DCF_IS_VIC),
515 };
516 
517 static int periph_init(struct clknode *clk, device_t dev);
518 static int periph_recalc(struct clknode *clk, uint64_t *freq);
519 static int periph_set_freq(struct clknode *clk, uint64_t fin,
520     uint64_t *fout, int flags, int *stop);
521 static int periph_set_mux(struct clknode *clk, int idx);
522 
523 struct periph_sc {
524 	device_t		clkdev;
525 	uint32_t		base_reg;
526 	uint32_t		div_shift;
527 	uint32_t		div_width;
528 	uint32_t		div_mask;
529 	uint32_t		div_f_width;
530 	uint32_t		div_f_mask;
531 	uint32_t		flags;
532 
533 	uint32_t		divider;
534 	int 			mux;
535 };
536 
537 static clknode_method_t periph_methods[] = {
538 	/* Device interface */
539 	CLKNODEMETHOD(clknode_init,		periph_init),
540 	CLKNODEMETHOD(clknode_recalc_freq,	periph_recalc),
541 	CLKNODEMETHOD(clknode_set_freq,		periph_set_freq),
542 	CLKNODEMETHOD(clknode_set_mux, 		periph_set_mux),
543 	CLKNODEMETHOD_END
544 };
545 DEFINE_CLASS_1(tegra124_periph, tegra124_periph_class, periph_methods,
546    sizeof(struct periph_sc), clknode_class);
547 
548 static int
549 periph_init(struct clknode *clk, device_t dev)
550 {
551 	struct periph_sc *sc;
552 	uint32_t reg;
553 	sc = clknode_get_softc(clk);
554 
555 	DEVICE_LOCK(sc);
556 	if (sc->flags & DCF_HAVE_ENA)
557 		MD4(sc, sc->base_reg, PERLCK_ENA_MASK, PERLCK_ENA_MASK);
558 
559 	RD4(sc, sc->base_reg, &reg);
560 	DEVICE_UNLOCK(sc);
561 
562 	/* Stnadard mux. */
563 	if (sc->flags & DCF_HAVE_MUX)
564 		sc->mux = (reg >> PERLCK_MUX_SHIFT) & PERLCK_MUX_MASK;
565 	else
566 		sc->mux = 0;
567 	if (sc->flags & DCF_HAVE_DIV)
568 		sc->divider = (reg & sc->div_mask) + 2;
569 	else
570 		sc->divider = 1;
571 	if ((sc->flags & DCF_IS_MASK) == DCF_IS_UART) {
572 		if (!(reg & PERLCK_UDIV_DIS))
573 			sc->divider = 2;
574 	}
575 
576 	/* AUDIO MUX */
577 	if ((sc->flags & DCF_IS_MASK) == DCF_IS_AUDIO) {
578 		if (!(reg & PERLCK_AMUX_DIS) && (sc->mux == 7)) {
579 			sc->mux = 8 +
580 			    ((reg >> PERLCK_AMUX_SHIFT) & PERLCK_MUX_MASK);
581 		}
582 	}
583 	clknode_init_parent_idx(clk, sc->mux);
584 	return(0);
585 }
586 
587 static int
588 periph_set_mux(struct clknode *clk, int idx)
589 {
590 	struct periph_sc *sc;
591 	uint32_t reg;
592 
593 	sc = clknode_get_softc(clk);
594 	if (!(sc->flags & DCF_HAVE_MUX))
595 		return (ENXIO);
596 
597 	sc->mux = idx;
598 	DEVICE_LOCK(sc);
599 	RD4(sc, sc->base_reg, &reg);
600 	reg &= ~(PERLCK_MUX_MASK << PERLCK_MUX_SHIFT);
601 	if ((sc->flags & DCF_IS_MASK) == DCF_IS_AUDIO) {
602 		reg &= ~PERLCK_AMUX_DIS;
603 		reg &= ~(PERLCK_MUX_MASK << PERLCK_AMUX_SHIFT);
604 
605 		if (idx <= 7) {
606 			reg |= idx << PERLCK_MUX_SHIFT;
607 		} else {
608 			reg |= 7 << PERLCK_MUX_SHIFT;
609 			reg |= (idx - 8) << PERLCK_AMUX_SHIFT;
610 		}
611 	} else {
612 		reg |= idx << PERLCK_MUX_SHIFT;
613 	}
614 	WR4(sc, sc->base_reg, reg);
615 	DEVICE_UNLOCK(sc);
616 
617 	return(0);
618 }
619 
620 static int
621 periph_recalc(struct clknode *clk, uint64_t *freq)
622 {
623 	struct periph_sc *sc;
624 	uint32_t reg;
625 
626 	sc = clknode_get_softc(clk);
627 
628 	if (sc->flags & DCF_HAVE_DIV) {
629 		DEVICE_LOCK(sc);
630 		RD4(sc, sc->base_reg, &reg);
631 		DEVICE_UNLOCK(sc);
632 		*freq = (*freq << sc->div_f_width) / sc->divider;
633 	}
634 	return (0);
635 }
636 
637 static int
638 periph_set_freq(struct clknode *clk, uint64_t fin, uint64_t *fout,
639    int flags, int *stop)
640 {
641 	struct periph_sc *sc;
642 	uint64_t tmp, divider;
643 
644 	sc = clknode_get_softc(clk);
645 	if (!(sc->flags & DCF_HAVE_DIV)) {
646 		*stop = 0;
647 		return (0);
648 	}
649 
650 	tmp = fin << sc->div_f_width;
651 	divider = tmp / *fout;
652 	if ((tmp % *fout) != 0)
653 		divider++;
654 
655 	if (divider < (1 << sc->div_f_width))
656 		 divider = 1 << (sc->div_f_width - 1);
657 
658 	if (flags & CLK_SET_DRYRUN) {
659 		if (((flags & (CLK_SET_ROUND_UP | CLK_SET_ROUND_DOWN)) == 0) &&
660 		    (*fout != (tmp / divider)))
661 			return (ERANGE);
662 	} else {
663 		DEVICE_LOCK(sc);
664 		MD4(sc, sc->base_reg, sc->div_mask,
665 		    (divider - (1 << sc->div_f_width)));
666 		DEVICE_UNLOCK(sc);
667 		sc->divider = divider;
668 	}
669 	*fout = tmp / divider;
670 	*stop = 1;
671 	return (0);
672 }
673 
674 static int
675 periph_register(struct clkdom *clkdom, struct periph_def *clkdef)
676 {
677 	struct clknode *clk;
678 	struct periph_sc *sc;
679 
680 	clk = clknode_create(clkdom, &tegra124_periph_class, &clkdef->clkdef);
681 	if (clk == NULL)
682 		return (1);
683 
684 	sc = clknode_get_softc(clk);
685 	sc->clkdev = clknode_get_device(clk);
686 	sc->base_reg = clkdef->base_reg;
687 	sc->div_width = clkdef->div_width;
688 	sc->div_mask = (1 <<clkdef->div_width) - 1;
689 	sc->div_f_width = clkdef->div_f_width;
690 	sc->div_f_mask = (1 <<clkdef->div_f_width) - 1;
691 	sc->flags = clkdef->flags;
692 
693 	clknode_register(clkdom, clk);
694 	return (0);
695 }
696 
697 /* -------------------------------------------------------------------------- */
698 static int pgate_init(struct clknode *clk, device_t dev);
699 static int pgate_set_gate(struct clknode *clk, bool enable);
700 static int pgate_get_gate(struct clknode *clk, bool *enableD);
701 
702 struct pgate_sc {
703 	device_t		clkdev;
704 	uint32_t		idx;
705 	uint32_t		flags;
706 	uint32_t		enabled;
707 
708 };
709 
710 static clknode_method_t pgate_methods[] = {
711 	/* Device interface */
712 	CLKNODEMETHOD(clknode_init,		pgate_init),
713 	CLKNODEMETHOD(clknode_set_gate,		pgate_set_gate),
714 	CLKNODEMETHOD(clknode_get_gate,		pgate_get_gate),
715 	CLKNODEMETHOD_END
716 };
717 DEFINE_CLASS_1(tegra124_pgate, tegra124_pgate_class, pgate_methods,
718    sizeof(struct pgate_sc), clknode_class);
719 
720 static uint32_t
721 get_enable_reg(int idx)
722 {
723 	KASSERT(idx / 32 < nitems(clk_enable_reg),
724 	    ("Invalid clock index for enable: %d", idx));
725 	return (clk_enable_reg[idx / 32]);
726 }
727 
728 static uint32_t
729 get_reset_reg(int idx)
730 {
731 	KASSERT(idx / 32 < nitems(clk_reset_reg),
732 	    ("Invalid clock index for reset: %d", idx));
733 	return (clk_reset_reg[idx / 32]);
734 }
735 
736 static int
737 pgate_init(struct clknode *clk, device_t dev)
738 {
739 	struct pgate_sc *sc;
740 	uint32_t ena_reg, rst_reg, mask;
741 
742 	sc = clknode_get_softc(clk);
743 	mask = 1 << (sc->idx % 32);
744 
745 	DEVICE_LOCK(sc);
746 	RD4(sc, get_enable_reg(sc->idx), &ena_reg);
747 	RD4(sc, get_reset_reg(sc->idx), &rst_reg);
748 	DEVICE_UNLOCK(sc);
749 
750 	sc->enabled = ena_reg & mask ? 1 : 0;
751 	clknode_init_parent_idx(clk, 0);
752 
753 	return(0);
754 }
755 
756 static int
757 pgate_set_gate(struct clknode *clk, bool enable)
758 {
759 	struct pgate_sc *sc;
760 	uint32_t reg, mask, base_reg;
761 
762 	sc = clknode_get_softc(clk);
763 	mask = 1 << (sc->idx % 32);
764 	sc->enabled = enable;
765 	base_reg = get_enable_reg(sc->idx);
766 
767 	DEVICE_LOCK(sc);
768 	MD4(sc, base_reg, mask, enable ? mask : 0);
769 	RD4(sc, base_reg, &reg);
770 	DEVICE_UNLOCK(sc);
771 
772 	DELAY(2);
773 	return(0);
774 }
775 
776 static int
777 pgate_get_gate(struct clknode *clk, bool *enabled)
778 {
779 	struct pgate_sc *sc;
780 	uint32_t reg, mask, base_reg;
781 
782 	sc = clknode_get_softc(clk);
783 	mask = 1 << (sc->idx % 32);
784 	base_reg = get_enable_reg(sc->idx);
785 
786 	DEVICE_LOCK(sc);
787 	RD4(sc, base_reg, &reg);
788 	DEVICE_UNLOCK(sc);
789 	*enabled = reg & mask ? true: false;
790 
791 	return(0);
792 }
793 int
794 tegra124_hwreset_by_idx(struct tegra124_car_softc *sc, intptr_t idx, bool reset)
795 {
796 	uint32_t reg, mask, reset_reg;
797 
798 	mask = 1 << (idx % 32);
799 	reset_reg = get_reset_reg(idx);
800 
801 	CLKDEV_DEVICE_LOCK(sc->dev);
802 	CLKDEV_MODIFY_4(sc->dev, reset_reg, mask, reset ? mask : 0);
803 	CLKDEV_READ_4(sc->dev, reset_reg, &reg);
804 	CLKDEV_DEVICE_UNLOCK(sc->dev);
805 
806 	return(0);
807 }
808 
809 static int
810 pgate_register(struct clkdom *clkdom, struct pgate_def *clkdef)
811 {
812 	struct clknode *clk;
813 	struct pgate_sc *sc;
814 
815 	clk = clknode_create(clkdom, &tegra124_pgate_class, &clkdef->clkdef);
816 	if (clk == NULL)
817 		return (1);
818 
819 	sc = clknode_get_softc(clk);
820 	sc->clkdev = clknode_get_device(clk);
821 	sc->idx = clkdef->idx;
822 	sc->flags = clkdef->flags;
823 
824 	clknode_register(clkdom, clk);
825 	return (0);
826 }
827 
828 void
829 tegra124_periph_clock(struct tegra124_car_softc *sc)
830 {
831 	int i, rv;
832 
833 	for (i = 0; i <  nitems(periph_def); i++) {
834 		rv = periph_register(sc->clkdom, &periph_def[i]);
835 		if (rv != 0)
836 			panic("tegra124_periph_register failed");
837 	}
838 	for (i = 0; i <  nitems(pgate_def); i++) {
839 		rv = pgate_register(sc->clkdom, &pgate_def[i]);
840 		if (rv != 0)
841 			panic("tegra124_pgate_register failed");
842 	}
843 
844 }
845