1 // SPDX-License-Identifier: GPL-2.0-only
3  * Amlogic Meson GX eFuse Driver
11 #include <linux/nvmem-provider.h>
42 	{ .compatible = "amlogic,meson-gxbb-efuse", },
49 	struct device *dev = &pdev->dev;  in meson_efuse_probe()
54 	unsigned int size;  in meson_efuse_probe()  local
56 			of_parse_phandle(pdev->dev.of_node, "secure-monitor", 0);  in meson_efuse_probe()
59 		dev_err(&pdev->dev, "no secure-monitor node\n");  in meson_efuse_probe()
60 		return -ENODEV;  in meson_efuse_probe()
65 		return -EPROBE_DEFER;  in meson_efuse_probe()
69 		return dev_err_probe(dev, PTR_ERR(clk), "failed to get efuse gate");  in meson_efuse_probe()
71 	if (meson_sm_call(fw, SM_EFUSE_USER_MAX, &size, 0, 0, 0, 0, 0) < 0) {  in meson_efuse_probe()
73 		return -EINVAL;  in meson_efuse_probe()
78 		return -ENOMEM;  in meson_efuse_probe()
80 	econfig->dev = dev;  in meson_efuse_probe()
81 	econfig->name = dev_name(dev);  in meson_efuse_probe()
82 	econfig->add_legacy_fixed_of_cells = true;  in meson_efuse_probe()
83 	econfig->stride = 1;  in meson_efuse_probe()
84 	econfig->word_size = 1;  in meson_efuse_probe()
85 	econfig->reg_read = meson_efuse_read;  in meson_efuse_probe()
86 	econfig->reg_write = meson_efuse_write;  in meson_efuse_probe()
87 	econfig->size = size;  in meson_efuse_probe()
88 	econfig->priv = fw;  in meson_efuse_probe()
90 	nvmem = devm_nvmem_register(&pdev->dev, econfig);  in meson_efuse_probe()
98 		.name = "meson-efuse",