1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/clk.h>
8 #include <linux/clk-provider.h>
13 #include <linux/clk/tegra.h>
16 #include <linux/reset-controller.h>
21 #include "clk.h"
31 static struct clk **clks;
35 /* Handlers for SoC-specific reset lines */
121 	return -EINVAL;  in tegra_clk_rst_assert()
135 	return -EINVAL;  in tegra_clk_rst_deassert()
200 	 * All non-boot peripherals will be in reset state on resume.  in tegra_clk_periph_resume()
201 	 * Wait for 5us of reset propagation delay before de-asserting  in tegra_clk_periph_resume()
218 		return -ENOMEM;  in tegra_clk_periph_ctx_init()
223 struct clk ** __init tegra_clk_init(void __iomem *regs, int num, int banks)  in tegra_clk_init()
238 	clks = kcalloc(num, sizeof(struct clk *), GFP_KERNEL);  in tegra_clk_init()
258 				struct clk *clks[], int clk_max)  in tegra_init_dup_clks()
260 	struct clk *clk;  in tegra_init_dup_clks()  local
262 	for (; dup_list->clk_id < clk_max; dup_list++) {  in tegra_init_dup_clks()
263 		clk = clks[dup_list->clk_id];  in tegra_init_dup_clks()
264 		dup_list->lookup.clk = clk;  in tegra_init_dup_clks()
265 		clkdev_add(&dup_list->lookup);  in tegra_init_dup_clks()
270 			   struct clk *clks[], int clk_max)  in tegra_init_from_table()
272 	struct clk *clk;  in tegra_init_from_table()  local
274 	for (; tbl->clk_id < clk_max; tbl++) {  in tegra_init_from_table()
275 		clk = clks[tbl->clk_id];  in tegra_init_from_table()
276 		if (IS_ERR_OR_NULL(clk)) {  in tegra_init_from_table()
278 			       __func__, PTR_ERR(clk), tbl->clk_id);  in tegra_init_from_table()
284 		if (tbl->parent_id < clk_max) {  in tegra_init_from_table()
285 			struct clk *parent = clks[tbl->parent_id];  in tegra_init_from_table()  local
286 			if (clk_set_parent(clk, parent)) {  in tegra_init_from_table()
287 				pr_err("%s: Failed to set parent %s of %s\n",  in tegra_init_from_table()
288 				       __func__, __clk_get_name(parent),  in tegra_init_from_table()
289 				       __clk_get_name(clk));  in tegra_init_from_table()
294 		if (tbl->rate)  in tegra_init_from_table()
295 			if (clk_set_rate(clk, tbl->rate)) {  in tegra_init_from_table()
297 				       __func__, tbl->rate,  in tegra_init_from_table()
298 				       __clk_get_name(clk));  in tegra_init_from_table()
302 		if (tbl->state)  in tegra_init_from_table()
303 			if (clk_prepare_enable(clk)) {  in tegra_init_from_table()
305 				       __clk_get_name(clk));  in tegra_init_from_table()
333 			    ("Tegra clk %d: register failed with %ld\n",  in tegra_add_of_provider()
337 			clks[i] = ERR_PTR(-EINVAL);  in tegra_add_of_provider()
363 		clk_register_clkdev(clks[dev_clks->dt_id], dev_clks->con_id,  in tegra_register_devclks()
364 				dev_clks->dev_id);  in tegra_register_devclks()
369 				"tegra-clk-debug");  in tegra_register_devclks()
373 struct clk ** __init tegra_lookup_dt_id(int clk_id,  in tegra_lookup_dt_id()
387 	node_name = kstrdup_and_replace(hw->init->name, '_', '-', GFP_KERNEL);  in tegra_clk_get_of_node()
392 		if (!strcmp(np->name, node_name))  in tegra_clk_get_of_node()
401 struct clk *tegra_clk_dev_register(struct clk_hw *hw)  in tegra_clk_dev_register()
403 	struct platform_device *pdev, *parent;  in tegra_clk_dev_register()  local
413 	dev_name = kasprintf(GFP_KERNEL, "tegra_clk_%s", hw->init->name);  in tegra_clk_dev_register()
417 	parent = of_find_device_by_node(tegra_car_np);  in tegra_clk_dev_register()
418 	if (parent) {  in tegra_clk_dev_register()
419 		pdev = of_platform_device_create(np, dev_name, &parent->dev);  in tegra_clk_dev_register()
420 		put_device(&parent->dev);  in tegra_clk_dev_register()
428 		dev = &pdev->dev;  in tegra_clk_dev_register()