1 // SPDX-License-Identifier: GPL-2.0+
5  * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
17 #include <power-domain.h>
26  * struct k3_rproc_privdata - Structure representing Remote processor data.
29  * @sci:		Pointer to TISCI handle
31  * @proc_id:		TISCI processor ID
32  * @host_id:		TISCI host id to which the processor gets assigned to.
38 	const struct ti_sci_handle *sci;  member
45  * k3_rproc_load() - Load up the Remote processor image
46  * @dev:	rproc device pointer
52 static int k3_rproc_load(struct udevice *dev, ulong addr, ulong size)  in k3_rproc_load()  argument
54 	struct k3_rproc_privdata *rproc = dev_get_priv(dev);  in k3_rproc_load()
55 	const struct ti_sci_proc_ops *pops = &rproc->sci->ops.proc_ops;  in k3_rproc_load()
58 	dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size);  in k3_rproc_load()
61 	ret = pops->proc_request(rproc->sci, rproc->proc_id);  in k3_rproc_load()
63 		dev_err(dev, "Requesting processor failed %d\n", ret);  in k3_rproc_load()
67 	ret = pops->set_proc_boot_cfg(rproc->sci, rproc->proc_id, addr, 0, 0);  in k3_rproc_load()
69 		dev_err(dev, "set_proc_boot_cfg failed %d\n", ret);  in k3_rproc_load()
73 	dev_dbg(dev, "%s: rproc successfully loaded\n", __func__);  in k3_rproc_load()
79  * k3_rproc_start() - Start the remote processor
80  * @dev:	rproc device pointer
84 static int k3_rproc_start(struct udevice *dev)  in k3_rproc_start()  argument
86 	struct k3_rproc_privdata *rproc = dev_get_priv(dev);  in k3_rproc_start()
87 	const struct ti_sci_proc_ops *pops = &rproc->sci->ops.proc_ops;  in k3_rproc_start()
90 	dev_dbg(dev, "%s\n", __func__);  in k3_rproc_start()
92 	ret = power_domain_on(&rproc->gtc_pwrdmn);  in k3_rproc_start()
94 		dev_err(dev, "power_domain_on() failed: %d\n", ret);  in k3_rproc_start()
99 	writel(GTC_CNTR_EN, rproc->gtc_base + GTC_CNTCR_REG);  in k3_rproc_start()
103 	 * assigned-clock-rates during the device probe. So no need to  in k3_rproc_start()
106 	ret = power_domain_on(&rproc->rproc_pwrdmn);  in k3_rproc_start()
108 		dev_err(dev, "power_domain_on() failed: %d\n", ret);  in k3_rproc_start()
112 	if (rproc->host_id != INVALID_ID) {  in k3_rproc_start()
113 		ret = pops->proc_handover(rproc->sci, rproc->proc_id,  in k3_rproc_start()
114 					  rproc->host_id);  in k3_rproc_start()
116 			dev_err(dev, "Handover processor failed %d\n", ret);  in k3_rproc_start()
120 		ret = pops->proc_release(rproc->sci, rproc->proc_id);  in k3_rproc_start()
122 			dev_err(dev, "Processor release failed %d\n", ret);  in k3_rproc_start()
127 	dev_dbg(dev, "%s: rproc successfully started\n", __func__);  in k3_rproc_start()
133  * k3_rproc_init() - Initialize the remote processor
134  * @dev:	rproc device pointer
138 static int k3_rproc_init(struct udevice *dev)  in k3_rproc_init()  argument
140 	dev_dbg(dev, "%s\n", __func__);  in k3_rproc_init()
143 	dev_dbg(dev, "%s: rproc successfully initialized\n", __func__);  in k3_rproc_init()
155  * k3_of_to_priv() - generate private data from device tree
156  * @dev:	corresponding k3 remote processor device
161 static int k3_rproc_of_to_priv(struct udevice *dev,  in k3_rproc_of_to_priv()  argument
166 	dev_dbg(dev, "%s\n", __func__);  in k3_rproc_of_to_priv()
168 	ret = power_domain_get_by_index(dev, &rproc->rproc_pwrdmn, 1);  in k3_rproc_of_to_priv()
170 		dev_err(dev, "power_domain_get() failed: %d\n", ret);  in k3_rproc_of_to_priv()
174 	ret = power_domain_get_by_index(dev, &rproc->gtc_pwrdmn, 0);  in k3_rproc_of_to_priv()
176 		dev_err(dev, "power_domain_get() failed: %d\n", ret);  in k3_rproc_of_to_priv()
180 	ret = reset_get_by_index(dev, 0, &rproc->rproc_rst);  in k3_rproc_of_to_priv()
182 		dev_err(dev, "reset_get() failed: %d\n", ret);  in k3_rproc_of_to_priv()
186 	rproc->sci = ti_sci_get_by_phandle(dev, "ti,sci");  in k3_rproc_of_to_priv()
187 	if (IS_ERR(rproc->sci)) {  in k3_rproc_of_to_priv()
188 		dev_err(dev, "ti_sci get failed: %d\n", ret);  in k3_rproc_of_to_priv()
189 		return PTR_ERR(rproc->sci);  in k3_rproc_of_to_priv()
192 	rproc->gtc_base = dev_read_addr_ptr(dev);  in k3_rproc_of_to_priv()
193 	if (!rproc->gtc_base) {  in k3_rproc_of_to_priv()
194 		dev_err(dev, "Get address failed\n");  in k3_rproc_of_to_priv()
195 		return -ENODEV;  in k3_rproc_of_to_priv()
198 	rproc->proc_id = dev_read_u32_default(dev, "ti,sci-proc-id",  in k3_rproc_of_to_priv()
200 	rproc->host_id = dev_read_u32_default(dev, "ti,sci-host-id",  in k3_rproc_of_to_priv()
207  * k3_rproc_probe() - Basic probe
208  * @dev:	corresponding k3 remote processor device
212 static int k3_rproc_probe(struct udevice *dev)  in k3_rproc_probe()  argument
217 	dev_dbg(dev, "%s\n", __func__);  in k3_rproc_probe()
219 	priv = dev_get_priv(dev);  in k3_rproc_probe()
221 	ret = k3_rproc_of_to_priv(dev, priv);  in k3_rproc_probe()
223 		dev_dbg(dev, "%s: Probe failed with error %d\n", __func__, ret);  in k3_rproc_probe()
227 	dev_dbg(dev, "Remoteproc successfully probed\n");  in k3_rproc_probe()
233 	{ .compatible = "ti,am654-rproc"},
240 	.id = UCLASS_REMOTEPROC,