1 // SPDX-License-Identifier: GPL-2.0
3  * NAND Flash Controller Device Driver for DT
20 #include "denali.h"
67 		.compatible = "altr,socfpga-denali-nand",
71 		.compatible = "socionext,uniphier-denali-nand-v5a",
75 		.compatible = "socionext,uniphier-denali-nand-v5b",
82 static int denali_dt_chip_init(struct denali_controller *denali,  in denali_dt_chip_init()  argument
93 	dchip = devm_kzalloc(denali->dev, struct_size(dchip, sels, nsels),  in denali_dt_chip_init()
96 		return -ENOMEM;  in denali_dt_chip_init()
98 	dchip->nsels = nsels;  in denali_dt_chip_init()
105 		dchip->sels[i].bank = bank;  in denali_dt_chip_init()
107 		nand_set_flash_node(&dchip->chip, chip_np);  in denali_dt_chip_init()
110 	return denali_chip_init(denali, dchip);  in denali_dt_chip_init()
115 	struct device *dev = &pdev->dev;  in denali_dt_probe()
119 	struct denali_controller *denali;  in denali_dt_probe()  local
125 		return -ENOMEM;  in denali_dt_probe()
126 	denali = &dt->controller;  in denali_dt_probe()
130 		return -EINVAL;  in denali_dt_probe()
132 	denali->revision = data->revision;  in denali_dt_probe()
133 	denali->caps = data->caps;  in denali_dt_probe()
134 	denali->oob_skip_bytes = data->oob_skip_bytes;  in denali_dt_probe()
135 	denali->ecc_caps = data->ecc_caps;  in denali_dt_probe()
137 	denali->dev = dev;  in denali_dt_probe()
138 	denali->irq = platform_get_irq(pdev, 0);  in denali_dt_probe()
139 	if (denali->irq < 0)  in denali_dt_probe()
140 		return denali->irq;  in denali_dt_probe()
143 	denali->reg = devm_ioremap_resource(dev, res);  in denali_dt_probe()
144 	if (IS_ERR(denali->reg))  in denali_dt_probe()
145 		return PTR_ERR(denali->reg);  in denali_dt_probe()
148 	denali->host = devm_ioremap_resource(dev, res);  in denali_dt_probe()
149 	if (IS_ERR(denali->host))  in denali_dt_probe()
150 		return PTR_ERR(denali->host);  in denali_dt_probe()
152 	dt->clk = devm_clk_get(dev, "nand");  in denali_dt_probe()
153 	if (IS_ERR(dt->clk))  in denali_dt_probe()
154 		return PTR_ERR(dt->clk);  in denali_dt_probe()
156 	dt->clk_x = devm_clk_get(dev, "nand_x");  in denali_dt_probe()
157 	if (IS_ERR(dt->clk_x))  in denali_dt_probe()
158 		return PTR_ERR(dt->clk_x);  in denali_dt_probe()
160 	dt->clk_ecc = devm_clk_get(dev, "ecc");  in denali_dt_probe()
161 	if (IS_ERR(dt->clk_ecc))  in denali_dt_probe()
162 		return PTR_ERR(dt->clk_ecc);  in denali_dt_probe()
164 	dt->rst = devm_reset_control_get_optional_shared(dev, "nand");  in denali_dt_probe()
165 	if (IS_ERR(dt->rst))  in denali_dt_probe()
166 		return PTR_ERR(dt->rst);  in denali_dt_probe()
168 	dt->rst_reg = devm_reset_control_get_optional_shared(dev, "reg");  in denali_dt_probe()
169 	if (IS_ERR(dt->rst_reg))  in denali_dt_probe()
170 		return PTR_ERR(dt->rst_reg);  in denali_dt_probe()
172 	ret = clk_prepare_enable(dt->clk);  in denali_dt_probe()
176 	ret = clk_prepare_enable(dt->clk_x);  in denali_dt_probe()
180 	ret = clk_prepare_enable(dt->clk_ecc);  in denali_dt_probe()
184 	denali->clk_rate = clk_get_rate(dt->clk);  in denali_dt_probe()
185 	denali->clk_x_rate = clk_get_rate(dt->clk_x);  in denali_dt_probe()
192 	ret = reset_control_deassert(dt->rst_reg);  in denali_dt_probe()
196 	ret = reset_control_deassert(dt->rst);  in denali_dt_probe()
207 	ret = denali_init(denali);  in denali_dt_probe()
211 	for_each_child_of_node(dev->of_node, np) {  in denali_dt_probe()
212 		ret = denali_dt_chip_init(denali, np);  in denali_dt_probe()
224 	denali_remove(denali);  in denali_dt_probe()
226 	reset_control_assert(dt->rst);  in denali_dt_probe()
228 	reset_control_assert(dt->rst_reg);  in denali_dt_probe()
230 	clk_disable_unprepare(dt->clk_ecc);  in denali_dt_probe()
232 	clk_disable_unprepare(dt->clk_x);  in denali_dt_probe()
234 	clk_disable_unprepare(dt->clk);  in denali_dt_probe()
243 	denali_remove(&dt->controller);  in denali_dt_remove()
244 	reset_control_assert(dt->rst);  in denali_dt_remove()
245 	reset_control_assert(dt->rst_reg);  in denali_dt_remove()
246 	clk_disable_unprepare(dt->clk_ecc);  in denali_dt_remove()
247 	clk_disable_unprepare(dt->clk_x);  in denali_dt_remove()
248 	clk_disable_unprepare(dt->clk);  in denali_dt_remove()
257 		.name	= "denali-nand-dt",
265 MODULE_DESCRIPTION("DT driver for Denali NAND controller");