1 // SPDX-License-Identifier: GPL-2.0-only
5  * i.MX7 System Reset Controller (SRC) driver
14 #include <linux/reset-controller.h>
16 #include <dt-bindings/reset/imx7-reset.h>
17 #include <dt-bindings/reset/imx8mq-reset.h>
18 #include <dt-bindings/reset/imx8mp-reset.h>
51 	const struct imx7_src_signal *signal = &imx7src->signals[id];  in imx7_reset_update()
53 	return regmap_update_bits(imx7src->regmap,  in imx7_reset_update()
54 				  signal->offset, signal->bit, value);  in imx7_reset_update()
92 			  unsigned long id, bool assert)  in imx7_reset_set()  argument
95 	const unsigned int bit = imx7src->signals[id].bit;  in imx7_reset_set()
96 	unsigned int value = assert ? bit : 0;  in imx7_reset_set()
101 		 * wait for more than 10us to release phy g_rst and  in imx7_reset_set()
104 		if (!assert)  in imx7_reset_set()
109 		value = assert ? 0 : bit;  in imx7_reset_set()
132 		.assert   = imx7_reset_assert,
220 			    unsigned long id, bool assert)  in imx8mq_reset_set()  argument
223 	const unsigned int bit = imx7src->signals[id].bit;  in imx8mq_reset_set()
224 	unsigned int value = assert ? bit : 0;  in imx8mq_reset_set()
230 		 * wait for more than 10us to release phy g_rst and  in imx8mq_reset_set()
233 		if (!assert)  in imx8mq_reset_set()
245 		value = assert ? 0 : bit;  in imx8mq_reset_set()
268 		.assert   = imx8mq_reset_assert,
315 			    unsigned long id, bool assert)  in imx8mp_reset_set()  argument
318 	const unsigned int bit = imx7src->signals[id].bit;  in imx8mp_reset_set()
319 	unsigned int value = assert ? bit : 0;  in imx8mp_reset_set()
324 		 * wait for more than 10us to release phy g_rst and  in imx8mp_reset_set()
327 		if (!assert)  in imx8mp_reset_set()
332 		value = assert ? 0 : bit;  in imx8mp_reset_set()
355 		.assert   = imx8mp_reset_assert,
363 	struct device *dev = &pdev->dev;  in imx7_reset_probe()
369 		return -ENOMEM;  in imx7_reset_probe()
371 	imx7src->signals = variant->signals;  in imx7_reset_probe()
372 	imx7src->regmap = syscon_node_to_regmap(dev->of_node);  in imx7_reset_probe()
373 	if (IS_ERR(imx7src->regmap)) {  in imx7_reset_probe()
374 		dev_err(dev, "Unable to get imx7-src regmap");  in imx7_reset_probe()
375 		return PTR_ERR(imx7src->regmap);  in imx7_reset_probe()
377 	regmap_attach_dev(dev, imx7src->regmap, &config);  in imx7_reset_probe()
379 	imx7src->rcdev.owner     = THIS_MODULE;  in imx7_reset_probe()
380 	imx7src->rcdev.nr_resets = variant->signals_num;  in imx7_reset_probe()
381 	imx7src->rcdev.ops       = &variant->ops;  in imx7_reset_probe()
382 	imx7src->rcdev.of_node   = dev->of_node;  in imx7_reset_probe()
384 	return devm_reset_controller_register(dev, &imx7src->rcdev);  in imx7_reset_probe()
388 	{ .compatible = "fsl,imx7d-src", .data = &variant_imx7 },
389 	{ .compatible = "fsl,imx8mq-src", .data = &variant_imx8mq },
390 	{ .compatible = "fsl,imx8mp-src", .data = &variant_imx8mp },
405 MODULE_DESCRIPTION("NXP i.MX7 reset driver");