1 // SPDX-License-Identifier: GPL-2.0
3  * NAND Flash Controller Device Driver for DT
19 #include "denali.h"
66 		.compatible = "altr,socfpga-denali-nand",
70 		.compatible = "socionext,uniphier-denali-nand-v5a",
74 		.compatible = "socionext,uniphier-denali-nand-v5b",
81 static int denali_dt_chip_init(struct denali_controller *denali,  in denali_dt_chip_init()  argument
92 	dchip = devm_kzalloc(denali->dev, struct_size(dchip, sels, nsels),  in denali_dt_chip_init()
95 		return -ENOMEM;  in denali_dt_chip_init()
97 	dchip->nsels = nsels;  in denali_dt_chip_init()
104 		dchip->sels[i].bank = bank;  in denali_dt_chip_init()
106 		nand_set_flash_node(&dchip->chip, chip_np);  in denali_dt_chip_init()
109 	return denali_chip_init(denali, dchip);  in denali_dt_chip_init()
114 	struct device *dev = &pdev->dev;  in denali_dt_probe()
117 	struct denali_controller *denali;  in denali_dt_probe()  local
123 		return -ENOMEM;  in denali_dt_probe()
124 	denali = &dt->controller;  in denali_dt_probe()
128 		return -EINVAL;  in denali_dt_probe()
130 	denali->revision = data->revision;  in denali_dt_probe()
131 	denali->caps = data->caps;  in denali_dt_probe()
132 	denali->oob_skip_bytes = data->oob_skip_bytes;  in denali_dt_probe()
133 	denali->ecc_caps = data->ecc_caps;  in denali_dt_probe()
135 	denali->dev = dev;  in denali_dt_probe()
136 	denali->irq = platform_get_irq(pdev, 0);  in denali_dt_probe()
137 	if (denali->irq < 0)  in denali_dt_probe()
138 		return denali->irq;  in denali_dt_probe()
140 	denali->reg = devm_platform_ioremap_resource_byname(pdev, "denali_reg");  in denali_dt_probe()
141 	if (IS_ERR(denali->reg))  in denali_dt_probe()
142 		return PTR_ERR(denali->reg);  in denali_dt_probe()
144 	denali->host = devm_platform_ioremap_resource_byname(pdev, "nand_data");  in denali_dt_probe()
145 	if (IS_ERR(denali->host))  in denali_dt_probe()
146 		return PTR_ERR(denali->host);  in denali_dt_probe()
148 	dt->clk = devm_clk_get_enabled(dev, "nand");  in denali_dt_probe()
149 	if (IS_ERR(dt->clk))  in denali_dt_probe()
150 		return PTR_ERR(dt->clk);  in denali_dt_probe()
152 	dt->clk_x = devm_clk_get_enabled(dev, "nand_x");  in denali_dt_probe()
153 	if (IS_ERR(dt->clk_x))  in denali_dt_probe()
154 		return PTR_ERR(dt->clk_x);  in denali_dt_probe()
156 	dt->clk_ecc = devm_clk_get_enabled(dev, "ecc");  in denali_dt_probe()
157 	if (IS_ERR(dt->clk_ecc))  in denali_dt_probe()
158 		return PTR_ERR(dt->clk_ecc);  in denali_dt_probe()
160 	dt->rst = devm_reset_control_get_optional_shared(dev, "nand");  in denali_dt_probe()
161 	if (IS_ERR(dt->rst))  in denali_dt_probe()
162 		return PTR_ERR(dt->rst);  in denali_dt_probe()
164 	dt->rst_reg = devm_reset_control_get_optional_shared(dev, "reg");  in denali_dt_probe()
165 	if (IS_ERR(dt->rst_reg))  in denali_dt_probe()
166 		return PTR_ERR(dt->rst_reg);  in denali_dt_probe()
168 	denali->clk_rate = clk_get_rate(dt->clk);  in denali_dt_probe()
169 	denali->clk_x_rate = clk_get_rate(dt->clk_x);  in denali_dt_probe()
176 	ret = reset_control_deassert(dt->rst_reg);  in denali_dt_probe()
180 	ret = reset_control_deassert(dt->rst);  in denali_dt_probe()
191 	ret = denali_init(denali);  in denali_dt_probe()
195 	for_each_child_of_node(dev->of_node, np) {  in denali_dt_probe()
196 		ret = denali_dt_chip_init(denali, np);  in denali_dt_probe()
208 	denali_remove(denali);  in denali_dt_probe()
210 	reset_control_assert(dt->rst);  in denali_dt_probe()
212 	reset_control_assert(dt->rst_reg);  in denali_dt_probe()
221 	denali_remove(&dt->controller);  in denali_dt_remove()
222 	reset_control_assert(dt->rst);  in denali_dt_remove()
223 	reset_control_assert(dt->rst_reg);  in denali_dt_remove()
230 		.name	= "denali-nand-dt",
238 MODULE_DESCRIPTION("DT driver for Denali NAND controller");