1 // SPDX-License-Identifier: GPL-2.0-only
3  * Oxford Semiconductor OXNAS DWMAC glue layer
35 #define DWMAC_LOW_TX_SOURCE     4
59 	struct oxnas_dwmac *dwmac = priv;  in oxnas_dwmac_init()  local
64 	ret = device_reset(dwmac->dev);  in oxnas_dwmac_init()
68 	ret = clk_prepare_enable(dwmac->clk);  in oxnas_dwmac_init()
72 	ret = regmap_read(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, &value);  in oxnas_dwmac_init()
74 		clk_disable_unprepare(dwmac->clk);  in oxnas_dwmac_init()
91 	regmap_write(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, value);  in oxnas_dwmac_init()
94 	value = DWMAC_TX_VARDELAY(4)	|  in oxnas_dwmac_init()
98 	regmap_write(dwmac->regmap, OXNAS_DWMAC_DELAY_REGOFFSET, value);  in oxnas_dwmac_init()
105 	struct oxnas_dwmac *dwmac = priv;  in oxnas_dwmac_exit()  local
107 	clk_disable_unprepare(dwmac->clk);  in oxnas_dwmac_exit()
114 	struct oxnas_dwmac *dwmac;  in oxnas_dwmac_probe()  local
125 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);  in oxnas_dwmac_probe()
126 	if (!dwmac) {  in oxnas_dwmac_probe()
127 		ret = -ENOMEM;  in oxnas_dwmac_probe()
131 	dwmac->dev = &pdev->dev;  in oxnas_dwmac_probe()
132 	plat_dat->bsp_priv = dwmac;  in oxnas_dwmac_probe()
133 	plat_dat->init = oxnas_dwmac_init;  in oxnas_dwmac_probe()
134 	plat_dat->exit = oxnas_dwmac_exit;  in oxnas_dwmac_probe()
136 	dwmac->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,  in oxnas_dwmac_probe()
137 							"oxsemi,sys-ctrl");  in oxnas_dwmac_probe()
138 	if (IS_ERR(dwmac->regmap)) {  in oxnas_dwmac_probe()
139 		dev_err(&pdev->dev, "failed to have sysctrl regmap\n");  in oxnas_dwmac_probe()
140 		ret = PTR_ERR(dwmac->regmap);  in oxnas_dwmac_probe()
144 	dwmac->clk = devm_clk_get(&pdev->dev, "gmac");  in oxnas_dwmac_probe()
145 	if (IS_ERR(dwmac->clk)) {  in oxnas_dwmac_probe()
146 		ret = PTR_ERR(dwmac->clk);  in oxnas_dwmac_probe()
150 	ret = oxnas_dwmac_init(pdev, plat_dat->bsp_priv);  in oxnas_dwmac_probe()
154 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);  in oxnas_dwmac_probe()
162 	oxnas_dwmac_exit(pdev, plat_dat->bsp_priv);  in oxnas_dwmac_probe()
170 	{ .compatible = "oxsemi,ox820-dwmac" },
179 		.name           = "oxnas-dwmac",
187 MODULE_DESCRIPTION("Oxford Semiconductor OXNAS DWMAC glue layer");