power/reset/axxia-reset.c

1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/mfd/syscon.h>
16 #include <linux/reboot.h>
29 static struct regmap *syscon;  variable
32 				 unsigned long mode, void *cmd)  in axxia_restart_handler()  argument
35 	regmap_write(syscon, SC_CRIT_WRITE_KEY, 0xab);  in axxia_restart_handler()
37 	regmap_write(syscon, SC_LATCH_ON_RESET, 0x00000040);  in axxia_restart_handler()
39 	regmap_write(syscon, SC_EFUSE_INT_STATUS, EFUSE_READ_DONE);  in axxia_restart_handler()
41 	regmap_update_bits(syscon, SC_RESET_CONTROL,  in axxia_restart_handler()
54 	struct device *dev = &pdev->dev;  in axxia_reset_probe()
57 	syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");  in axxia_reset_probe()
58 	if (IS_ERR(syscon)) {  in axxia_reset_probe()
59 		pr_err("%pOFn: syscon lookup failed\n", dev->of_node);  in axxia_reset_probe()
60 		return PTR_ERR(syscon);  in axxia_reset_probe()
71 	{ .compatible = "lsi,axm55xx-reset", },
79 		.name = "axxia-reset",