1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2017 Pengutronix, Oleksij Rempel <kernel@pengutronix.de>
6 #include <linux/arm-smccc.h>
9 #include <linux/interrupt.h>
10 #include <linux/kernel.h>
11 #include <linux/mailbox_client.h>
12 #include <linux/mfd/syscon.h>
13 #include <linux/module.h>
14 #include <linux/of_address.h>
15 #include <linux/of_reserved_mem.h>
16 #include <linux/of_device.h>
17 #include <linux/platform_device.h>
18 #include <linux/regmap.h>
19 #include <linux/remoteproc.h>
20 #include <linux/workqueue.h>
22 #include "imx_rproc.h"
23 #include "remoteproc_internal.h"
25 #define IMX7D_SRC_SCR 0x0C
26 #define IMX7D_ENABLE_M4 BIT(3)
27 #define IMX7D_SW_M4P_RST BIT(2)
28 #define IMX7D_SW_M4C_RST BIT(1)
29 #define IMX7D_SW_M4C_NON_SCLR_RST BIT(0)
31 #define IMX7D_M4_RST_MASK (IMX7D_ENABLE_M4 | IMX7D_SW_M4P_RST \
33 | IMX7D_SW_M4C_NON_SCLR_RST)
35 #define IMX7D_M4_START (IMX7D_ENABLE_M4 | IMX7D_SW_M4P_RST \
37 #define IMX7D_M4_STOP (IMX7D_ENABLE_M4 | IMX7D_SW_M4C_RST | \
38 IMX7D_SW_M4C_NON_SCLR_RST)
40 /* Address: 0x020D8000 */
41 #define IMX6SX_SRC_SCR 0x00
42 #define IMX6SX_ENABLE_M4 BIT(22)
43 #define IMX6SX_SW_M4P_RST BIT(12)
44 #define IMX6SX_SW_M4C_NON_SCLR_RST BIT(4)
45 #define IMX6SX_SW_M4C_RST BIT(3)
47 #define IMX6SX_M4_START (IMX6SX_ENABLE_M4 | IMX6SX_SW_M4P_RST \
49 #define IMX6SX_M4_STOP (IMX6SX_ENABLE_M4 | IMX6SX_SW_M4C_RST | \
50 IMX6SX_SW_M4C_NON_SCLR_RST)
51 #define IMX6SX_M4_RST_MASK (IMX6SX_ENABLE_M4 | IMX6SX_SW_M4P_RST \
52 | IMX6SX_SW_M4C_NON_SCLR_RST \
55 #define IMX_RPROC_MEM_MAX 32
57 #define IMX_SIP_RPROC 0xC2000005
58 #define IMX_SIP_RPROC_START 0x00
59 #define IMX_SIP_RPROC_STARTED 0x01
60 #define IMX_SIP_RPROC_STOP 0x02
63 * struct imx_rproc_mem - slim internal memory structure
64 * @cpu_addr: MPU virtual address of the memory region
65 * @sys_addr: Bus address used to access the memory region
66 * @size: Size of the memory region
68 struct imx_rproc_mem {
69 void __iomem *cpu_addr;
75 /* M4 own area. Can be mapped at probe */
76 #define ATT_OWN BIT(1)
77 #define ATT_IOMEM BIT(2)
81 struct regmap *regmap;
83 const struct imx_rproc_dcfg *dcfg;
84 struct imx_rproc_mem mem[IMX_RPROC_MEM_MAX];
86 struct mbox_client cl;
87 struct mbox_chan *tx_ch;
88 struct mbox_chan *rx_ch;
89 struct work_struct rproc_work;
90 struct workqueue_struct *workqueue;
91 void __iomem *rsc_table;
94 static const struct imx_rproc_att imx_rproc_att_imx93[] = {
95 /* dev addr , sys addr , size , flags */
96 /* TCM CODE NON-SECURE */
97 { 0x0FFC0000, 0x201C0000, 0x00020000, ATT_OWN | ATT_IOMEM },
98 { 0x0FFE0000, 0x201E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
100 /* TCM CODE SECURE */
101 { 0x1FFC0000, 0x201C0000, 0x00020000, ATT_OWN | ATT_IOMEM },
102 { 0x1FFE0000, 0x201E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
104 /* TCM SYS NON-SECURE*/
105 { 0x20000000, 0x20200000, 0x00020000, ATT_OWN | ATT_IOMEM },
106 { 0x20020000, 0x20220000, 0x00020000, ATT_OWN | ATT_IOMEM },
109 { 0x30000000, 0x20200000, 0x00020000, ATT_OWN | ATT_IOMEM },
110 { 0x30020000, 0x20220000, 0x00020000, ATT_OWN | ATT_IOMEM },
113 { 0x80000000, 0x80000000, 0x10000000, 0 },
114 { 0x90000000, 0x80000000, 0x10000000, 0 },
116 { 0xC0000000, 0xa0000000, 0x10000000, 0 },
117 { 0xD0000000, 0xa0000000, 0x10000000, 0 },
120 static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
121 /* dev addr , sys addr , size , flags */
123 { 0x00000000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
125 { 0x00180000, 0x00180000, 0x00009000, 0 },
127 { 0x00900000, 0x00900000, 0x00020000, 0 },
129 { 0x00920000, 0x00920000, 0x00020000, 0 },
131 { 0x00940000, 0x00940000, 0x00050000, 0 },
132 /* QSPI Code - alias */
133 { 0x08000000, 0x08000000, 0x08000000, 0 },
134 /* DDR (Code) - alias */
135 { 0x10000000, 0x40000000, 0x0FFE0000, 0 },
137 { 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM },
138 /* OCRAM_S - alias */
139 { 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
141 { 0x20200000, 0x00900000, 0x00020000, ATT_OWN },
143 { 0x20220000, 0x00920000, 0x00020000, ATT_OWN },
145 { 0x20240000, 0x00940000, 0x00040000, ATT_OWN },
147 { 0x40000000, 0x40000000, 0x80000000, 0 },
150 static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
151 /* dev addr , sys addr , size , flags */
153 { 0x00000000, 0x007e0000, 0x00020000, ATT_IOMEM},
155 { 0x00180000, 0x00180000, 0x00008000, 0 },
157 { 0x00900000, 0x00900000, 0x00020000, 0 },
159 { 0x00920000, 0x00920000, 0x00020000, 0 },
160 /* QSPI Code - alias */
161 { 0x08000000, 0x08000000, 0x08000000, 0 },
162 /* DDR (Code) - alias */
163 { 0x10000000, 0x80000000, 0x0FFE0000, 0 },
165 { 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM},
167 { 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM},
169 { 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
171 { 0x20200000, 0x00900000, 0x00020000, ATT_OWN },
173 { 0x20220000, 0x00920000, 0x00020000, ATT_OWN },
175 { 0x40000000, 0x40000000, 0x80000000, 0 },
178 static const struct imx_rproc_att imx_rproc_att_imx8ulp[] = {
179 {0x1FFC0000, 0x1FFC0000, 0xC0000, ATT_OWN},
180 {0x21000000, 0x21000000, 0x10000, ATT_OWN},
181 {0x80000000, 0x80000000, 0x60000000, 0}
184 static const struct imx_rproc_att imx_rproc_att_imx7ulp[] = {
185 {0x1FFD0000, 0x1FFD0000, 0x30000, ATT_OWN},
186 {0x20000000, 0x20000000, 0x10000, ATT_OWN},
187 {0x2F000000, 0x2F000000, 0x20000, ATT_OWN},
188 {0x2F020000, 0x2F020000, 0x20000, ATT_OWN},
189 {0x60000000, 0x60000000, 0x40000000, 0}
192 static const struct imx_rproc_att imx_rproc_att_imx7d[] = {
193 /* dev addr , sys addr , size , flags */
194 /* OCRAM_S (M4 Boot code) - alias */
195 { 0x00000000, 0x00180000, 0x00008000, 0 },
197 { 0x00180000, 0x00180000, 0x00008000, ATT_OWN },
198 /* OCRAM (Code) - alias */
199 { 0x00900000, 0x00900000, 0x00020000, 0 },
200 /* OCRAM_EPDC (Code) - alias */
201 { 0x00920000, 0x00920000, 0x00020000, 0 },
202 /* OCRAM_PXP (Code) - alias */
203 { 0x00940000, 0x00940000, 0x00008000, 0 },
205 { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
206 /* DDR (Code) - alias, first part of DDR (Data) */
207 { 0x10000000, 0x80000000, 0x0FFF0000, 0 },
210 { 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
212 { 0x20200000, 0x00900000, 0x00020000, 0 },
213 /* OCRAM_EPDC (Data) */
214 { 0x20220000, 0x00920000, 0x00020000, 0 },
215 /* OCRAM_PXP (Data) */
216 { 0x20240000, 0x00940000, 0x00008000, 0 },
218 { 0x80000000, 0x80000000, 0x60000000, 0 },
221 static const struct imx_rproc_att imx_rproc_att_imx6sx[] = {
222 /* dev addr , sys addr , size , flags */
223 /* TCML (M4 Boot Code) - alias */
224 { 0x00000000, 0x007F8000, 0x00008000, ATT_IOMEM },
226 { 0x00180000, 0x008F8000, 0x00004000, 0 },
227 /* OCRAM_S (Code) - alias */
228 { 0x00180000, 0x008FC000, 0x00004000, 0 },
230 { 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
231 /* DDR (Code) - alias, first part of DDR (Data) */
232 { 0x10000000, 0x80000000, 0x0FFF8000, 0 },
235 { 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
236 /* OCRAM_S (Data) - alias? */
237 { 0x208F8000, 0x008F8000, 0x00004000, 0 },
239 { 0x80000000, 0x80000000, 0x60000000, 0 },
242 static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mn = {
243 .att = imx_rproc_att_imx8mn,
244 .att_size = ARRAY_SIZE(imx_rproc_att_imx8mn),
245 .method = IMX_RPROC_SMC,
248 static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mq = {
249 .src_reg = IMX7D_SRC_SCR,
250 .src_mask = IMX7D_M4_RST_MASK,
251 .src_start = IMX7D_M4_START,
252 .src_stop = IMX7D_M4_STOP,
253 .att = imx_rproc_att_imx8mq,
254 .att_size = ARRAY_SIZE(imx_rproc_att_imx8mq),
255 .method = IMX_RPROC_MMIO,
258 static const struct imx_rproc_dcfg imx_rproc_cfg_imx8ulp = {
259 .att = imx_rproc_att_imx8ulp,
260 .att_size = ARRAY_SIZE(imx_rproc_att_imx8ulp),
261 .method = IMX_RPROC_NONE,
264 static const struct imx_rproc_dcfg imx_rproc_cfg_imx7ulp = {
265 .att = imx_rproc_att_imx7ulp,
266 .att_size = ARRAY_SIZE(imx_rproc_att_imx7ulp),
267 .method = IMX_RPROC_NONE,
270 static const struct imx_rproc_dcfg imx_rproc_cfg_imx7d = {
271 .src_reg = IMX7D_SRC_SCR,
272 .src_mask = IMX7D_M4_RST_MASK,
273 .src_start = IMX7D_M4_START,
274 .src_stop = IMX7D_M4_STOP,
275 .att = imx_rproc_att_imx7d,
276 .att_size = ARRAY_SIZE(imx_rproc_att_imx7d),
277 .method = IMX_RPROC_MMIO,
280 static const struct imx_rproc_dcfg imx_rproc_cfg_imx6sx = {
281 .src_reg = IMX6SX_SRC_SCR,
282 .src_mask = IMX6SX_M4_RST_MASK,
283 .src_start = IMX6SX_M4_START,
284 .src_stop = IMX6SX_M4_STOP,
285 .att = imx_rproc_att_imx6sx,
286 .att_size = ARRAY_SIZE(imx_rproc_att_imx6sx),
287 .method = IMX_RPROC_MMIO,
290 static const struct imx_rproc_dcfg imx_rproc_cfg_imx93 = {
291 .att = imx_rproc_att_imx93,
292 .att_size = ARRAY_SIZE(imx_rproc_att_imx93),
293 .method = IMX_RPROC_SMC,
296 static int imx_rproc_start(struct rproc *rproc)
298 struct imx_rproc *priv = rproc->priv;
299 const struct imx_rproc_dcfg *dcfg = priv->dcfg;
300 struct device *dev = priv->dev;
301 struct arm_smccc_res res;
304 switch (dcfg->method) {
306 ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask,
310 arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_START, 0, 0, 0, 0, 0, 0, &res);
318 dev_err(dev, "Failed to enable remote core!\n");
323 static int imx_rproc_stop(struct rproc *rproc)
325 struct imx_rproc *priv = rproc->priv;
326 const struct imx_rproc_dcfg *dcfg = priv->dcfg;
327 struct device *dev = priv->dev;
328 struct arm_smccc_res res;
331 switch (dcfg->method) {
333 ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask,
337 arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STOP, 0, 0, 0, 0, 0, 0, &res);
340 dev_info(dev, "Not in wfi, force stopped\n");
347 dev_err(dev, "Failed to stop remote core\n");
352 static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
353 size_t len, u64 *sys, bool *is_iomem)
355 const struct imx_rproc_dcfg *dcfg = priv->dcfg;
358 /* parse address translation table */
359 for (i = 0; i < dcfg->att_size; i++) {
360 const struct imx_rproc_att *att = &dcfg->att[i];
362 if (da >= att->da && da + len < att->da + att->size) {
363 unsigned int offset = da - att->da;
365 *sys = att->sa + offset;
367 *is_iomem = att->flags & ATT_IOMEM;
372 dev_warn(priv->dev, "Translation failed: da = 0x%llx len = 0x%zx\n",
377 static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
379 struct imx_rproc *priv = rproc->priv;
388 * On device side we have many aliases, so we need to convert device
389 * address (M4) to system bus address first.
391 if (imx_rproc_da_to_sys(priv, da, len, &sys, is_iomem))
394 for (i = 0; i < IMX_RPROC_MEM_MAX; i++) {
395 if (sys >= priv->mem[i].sys_addr && sys + len <
396 priv->mem[i].sys_addr + priv->mem[i].size) {
397 unsigned int offset = sys - priv->mem[i].sys_addr;
398 /* __force to make sparse happy with type conversion */
399 va = (__force void *)(priv->mem[i].cpu_addr + offset);
404 dev_dbg(&rproc->dev, "da = 0x%llx len = 0x%zx va = 0x%p\n",
410 static int imx_rproc_mem_alloc(struct rproc *rproc,
411 struct rproc_mem_entry *mem)
413 struct device *dev = rproc->dev.parent;
416 dev_dbg(dev, "map memory: %p+%zx\n", &mem->dma, mem->len);
417 va = ioremap_wc(mem->dma, mem->len);
418 if (IS_ERR_OR_NULL(va)) {
419 dev_err(dev, "Unable to map memory region: %p+%zx\n",
420 &mem->dma, mem->len);
424 /* Update memory entry va */
430 static int imx_rproc_mem_release(struct rproc *rproc,
431 struct rproc_mem_entry *mem)
433 dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
439 static int imx_rproc_prepare(struct rproc *rproc)
441 struct imx_rproc *priv = rproc->priv;
442 struct device_node *np = priv->dev->of_node;
443 struct of_phandle_iterator it;
444 struct rproc_mem_entry *mem;
445 struct reserved_mem *rmem;
448 /* Register associated reserved memory regions */
449 of_phandle_iterator_init(&it, np, "memory-region", NULL, 0);
450 while (of_phandle_iterator_next(&it) == 0) {
452 * Ignore the first memory region which will be used vdev buffer.
453 * No need to do extra handlings, rproc_add_virtio_dev will handle it.
455 if (!strcmp(it.node->name, "vdev0buffer"))
458 if (!strcmp(it.node->name, "rsc-table"))
461 rmem = of_reserved_mem_lookup(it.node);
463 dev_err(priv->dev, "unable to acquire memory-region\n");
467 /* No need to translate pa to da, i.MX use same map */
470 /* Register memory region */
471 mem = rproc_mem_entry_init(priv->dev, NULL, (dma_addr_t)rmem->base, rmem->size, da,
472 imx_rproc_mem_alloc, imx_rproc_mem_release,
476 rproc_coredump_add_segment(rproc, da, rmem->size);
480 rproc_add_carveout(rproc, mem);
486 static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
490 ret = rproc_elf_load_rsc_table(rproc, fw);
492 dev_info(&rproc->dev, "No resource table in elf\n");
497 static void imx_rproc_kick(struct rproc *rproc, int vqid)
499 struct imx_rproc *priv = rproc->priv;
504 dev_err(priv->dev, "No initialized mbox tx channel\n");
509 * Send the index of the triggered virtqueue as the mu payload.
510 * Let remote processor know which virtqueue is used.
514 err = mbox_send_message(priv->tx_ch, (void *)&mmsg);
516 dev_err(priv->dev, "%s: failed (%d, err:%d)\n",
517 __func__, vqid, err);
520 static int imx_rproc_attach(struct rproc *rproc)
525 static struct resource_table *imx_rproc_get_loaded_rsc_table(struct rproc *rproc, size_t *table_sz)
527 struct imx_rproc *priv = rproc->priv;
529 /* The resource table has already been mapped in imx_rproc_addr_init */
530 if (!priv->rsc_table)
534 return (struct resource_table *)priv->rsc_table;
537 static const struct rproc_ops imx_rproc_ops = {
538 .prepare = imx_rproc_prepare,
539 .attach = imx_rproc_attach,
540 .start = imx_rproc_start,
541 .stop = imx_rproc_stop,
542 .kick = imx_rproc_kick,
543 .da_to_va = imx_rproc_da_to_va,
544 .load = rproc_elf_load_segments,
545 .parse_fw = imx_rproc_parse_fw,
546 .find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
547 .get_loaded_rsc_table = imx_rproc_get_loaded_rsc_table,
548 .sanity_check = rproc_elf_sanity_check,
549 .get_boot_addr = rproc_elf_get_boot_addr,
552 static int imx_rproc_addr_init(struct imx_rproc *priv,
553 struct platform_device *pdev)
555 const struct imx_rproc_dcfg *dcfg = priv->dcfg;
556 struct device *dev = &pdev->dev;
557 struct device_node *np = dev->of_node;
558 int a, b = 0, err, nph;
560 /* remap required addresses */
561 for (a = 0; a < dcfg->att_size; a++) {
562 const struct imx_rproc_att *att = &dcfg->att[a];
564 if (!(att->flags & ATT_OWN))
567 if (b >= IMX_RPROC_MEM_MAX)
570 if (att->flags & ATT_IOMEM)
571 priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
574 priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev,
576 if (!priv->mem[b].cpu_addr) {
577 dev_err(dev, "failed to remap %#x bytes from %#x\n", att->size, att->sa);
580 priv->mem[b].sys_addr = att->sa;
581 priv->mem[b].size = att->size;
585 /* memory-region is optional property */
586 nph = of_count_phandle_with_args(np, "memory-region", NULL);
590 /* remap optional addresses */
591 for (a = 0; a < nph; a++) {
592 struct device_node *node;
595 node = of_parse_phandle(np, "memory-region", a);
596 /* Not map vdevbuffer, vdevring region */
597 if (!strncmp(node->name, "vdev", strlen("vdev"))) {
601 err = of_address_to_resource(node, 0, &res);
604 dev_err(dev, "unable to resolve memory region\n");
608 if (b >= IMX_RPROC_MEM_MAX)
611 /* Not use resource version, because we might share region */
612 priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev, res.start, resource_size(&res));
613 if (!priv->mem[b].cpu_addr) {
614 dev_err(dev, "failed to remap %pr\n", &res);
617 priv->mem[b].sys_addr = res.start;
618 priv->mem[b].size = resource_size(&res);
619 if (!strcmp(node->name, "rsc-table"))
620 priv->rsc_table = priv->mem[b].cpu_addr;
627 static void imx_rproc_vq_work(struct work_struct *work)
629 struct imx_rproc *priv = container_of(work, struct imx_rproc,
632 rproc_vq_interrupt(priv->rproc, 0);
633 rproc_vq_interrupt(priv->rproc, 1);
636 static void imx_rproc_rx_callback(struct mbox_client *cl, void *msg)
638 struct rproc *rproc = dev_get_drvdata(cl->dev);
639 struct imx_rproc *priv = rproc->priv;
641 queue_work(priv->workqueue, &priv->rproc_work);
644 static int imx_rproc_xtr_mbox_init(struct rproc *rproc)
646 struct imx_rproc *priv = rproc->priv;
647 struct device *dev = priv->dev;
648 struct mbox_client *cl;
650 if (!of_get_property(dev->of_node, "mbox-names", NULL))
657 cl->knows_txdone = false;
658 cl->rx_callback = imx_rproc_rx_callback;
660 priv->tx_ch = mbox_request_channel_byname(cl, "tx");
661 if (IS_ERR(priv->tx_ch))
662 return dev_err_probe(cl->dev, PTR_ERR(priv->tx_ch),
663 "failed to request tx mailbox channel\n");
665 priv->rx_ch = mbox_request_channel_byname(cl, "rx");
666 if (IS_ERR(priv->rx_ch)) {
667 mbox_free_channel(priv->tx_ch);
668 return dev_err_probe(cl->dev, PTR_ERR(priv->rx_ch),
669 "failed to request rx mailbox channel\n");
675 static void imx_rproc_free_mbox(struct rproc *rproc)
677 struct imx_rproc *priv = rproc->priv;
679 mbox_free_channel(priv->tx_ch);
680 mbox_free_channel(priv->rx_ch);
683 static int imx_rproc_detect_mode(struct imx_rproc *priv)
685 struct regmap_config config = { .name = "imx-rproc" };
686 const struct imx_rproc_dcfg *dcfg = priv->dcfg;
687 struct device *dev = priv->dev;
688 struct regmap *regmap;
689 struct arm_smccc_res res;
693 switch (dcfg->method) {
695 priv->rproc->state = RPROC_DETACHED;
698 arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STARTED, 0, 0, 0, 0, 0, 0, &res);
700 priv->rproc->state = RPROC_DETACHED;
706 regmap = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
707 if (IS_ERR(regmap)) {
708 dev_err(dev, "failed to find syscon\n");
709 return PTR_ERR(regmap);
712 priv->regmap = regmap;
713 regmap_attach_dev(dev, regmap, &config);
715 ret = regmap_read(regmap, dcfg->src_reg, &val);
717 dev_err(dev, "Failed to read src\n");
721 if ((val & dcfg->src_mask) != dcfg->src_stop)
722 priv->rproc->state = RPROC_DETACHED;
727 static int imx_rproc_clk_enable(struct imx_rproc *priv)
729 const struct imx_rproc_dcfg *dcfg = priv->dcfg;
730 struct device *dev = priv->dev;
733 /* Remote core is not under control of Linux */
734 if (dcfg->method == IMX_RPROC_NONE)
737 priv->clk = devm_clk_get(dev, NULL);
738 if (IS_ERR(priv->clk)) {
739 dev_err(dev, "Failed to get clock\n");
740 return PTR_ERR(priv->clk);
744 * clk for M4 block including memory. Should be
745 * enabled before .start for FW transfer.
747 ret = clk_prepare_enable(priv->clk);
749 dev_err(dev, "Failed to enable clock\n");
756 static int imx_rproc_probe(struct platform_device *pdev)
758 struct device *dev = &pdev->dev;
759 struct device_node *np = dev->of_node;
760 struct imx_rproc *priv;
762 const struct imx_rproc_dcfg *dcfg;
765 /* set some other name then imx */
766 rproc = rproc_alloc(dev, "imx-rproc", &imx_rproc_ops,
767 NULL, sizeof(*priv));
771 dcfg = of_device_get_match_data(dev);
782 dev_set_drvdata(dev, rproc);
783 priv->workqueue = create_workqueue(dev_name(dev));
784 if (!priv->workqueue) {
785 dev_err(dev, "cannot create workqueue\n");
790 ret = imx_rproc_xtr_mbox_init(rproc);
794 ret = imx_rproc_addr_init(priv, pdev);
796 dev_err(dev, "failed on imx_rproc_addr_init\n");
800 ret = imx_rproc_detect_mode(priv);
804 ret = imx_rproc_clk_enable(priv);
808 INIT_WORK(&priv->rproc_work, imx_rproc_vq_work);
810 if (rproc->state != RPROC_DETACHED)
811 rproc->auto_boot = of_property_read_bool(np, "fsl,auto-boot");
813 ret = rproc_add(rproc);
815 dev_err(dev, "rproc_add failed\n");
822 clk_disable_unprepare(priv->clk);
824 imx_rproc_free_mbox(rproc);
826 destroy_workqueue(priv->workqueue);
833 static int imx_rproc_remove(struct platform_device *pdev)
835 struct rproc *rproc = platform_get_drvdata(pdev);
836 struct imx_rproc *priv = rproc->priv;
838 clk_disable_unprepare(priv->clk);
840 imx_rproc_free_mbox(rproc);
841 destroy_workqueue(priv->workqueue);
847 static const struct of_device_id imx_rproc_of_match[] = {
848 { .compatible = "fsl,imx7ulp-cm4", .data = &imx_rproc_cfg_imx7ulp },
849 { .compatible = "fsl,imx7d-cm4", .data = &imx_rproc_cfg_imx7d },
850 { .compatible = "fsl,imx6sx-cm4", .data = &imx_rproc_cfg_imx6sx },
851 { .compatible = "fsl,imx8mq-cm4", .data = &imx_rproc_cfg_imx8mq },
852 { .compatible = "fsl,imx8mm-cm4", .data = &imx_rproc_cfg_imx8mq },
853 { .compatible = "fsl,imx8mn-cm7", .data = &imx_rproc_cfg_imx8mn },
854 { .compatible = "fsl,imx8mp-cm7", .data = &imx_rproc_cfg_imx8mn },
855 { .compatible = "fsl,imx8ulp-cm33", .data = &imx_rproc_cfg_imx8ulp },
856 { .compatible = "fsl,imx93-cm33", .data = &imx_rproc_cfg_imx93 },
859 MODULE_DEVICE_TABLE(of, imx_rproc_of_match);
861 static struct platform_driver imx_rproc_driver = {
862 .probe = imx_rproc_probe,
863 .remove = imx_rproc_remove,
866 .of_match_table = imx_rproc_of_match,
870 module_platform_driver(imx_rproc_driver);
872 MODULE_LICENSE("GPL v2");
873 MODULE_DESCRIPTION("i.MX remote processor control driver");
874 MODULE_AUTHOR("Oleksij Rempel <o.rempel@pengutronix.de>");