1 // SPDX-License-Identifier: GPL-2.0
3  * dwmac-imx.c - DWMAC Specific Glue layer for NXP imx8
55 	struct imx_priv_data *dwmac = plat_dat->bsp_priv;  in imx8mp_set_intf_mode()
58 	switch (plat_dat->interface) {  in imx8mp_set_intf_mode()
64 		val |= (dwmac->rmii_refclk_ext ? 0 : GPR_ENET_QOS_CLK_TX_CLK_SEL);  in imx8mp_set_intf_mode()
75 			 plat_dat->interface);  in imx8mp_set_intf_mode()
76 		return -EINVAL;  in imx8mp_set_intf_mode()
80 	return regmap_update_bits(dwmac->intf_regmap, dwmac->intf_reg_off,  in imx8mp_set_intf_mode()
99 	plat_dat = dwmac->plat_dat;  in imx_dwmac_init()
101 	ret = clk_prepare_enable(dwmac->clk_mem);  in imx_dwmac_init()
103 		dev_err(&pdev->dev, "mem clock enable failed\n");  in imx_dwmac_init()
107 	ret = clk_prepare_enable(dwmac->clk_tx);  in imx_dwmac_init()
109 		dev_err(&pdev->dev, "tx clock enable failed\n");  in imx_dwmac_init()
113 	if (dwmac->ops->set_intf_mode) {  in imx_dwmac_init()
114 		ret = dwmac->ops->set_intf_mode(plat_dat);  in imx_dwmac_init()
122 	clk_disable_unprepare(dwmac->clk_tx);  in imx_dwmac_init()
124 	clk_disable_unprepare(dwmac->clk_mem);  in imx_dwmac_init()
132 	clk_disable_unprepare(dwmac->clk_tx);  in imx_dwmac_exit()
133 	clk_disable_unprepare(dwmac->clk_mem);  in imx_dwmac_exit()
143 	plat_dat = dwmac->plat_dat;  in imx_dwmac_fix_speed()
145 	if (dwmac->ops->mac_rgmii_txclk_auto_adj ||  in imx_dwmac_fix_speed()
146 	    (plat_dat->interface == PHY_INTERFACE_MODE_RMII) ||  in imx_dwmac_fix_speed()
147 	    (plat_dat->interface == PHY_INTERFACE_MODE_MII))  in imx_dwmac_fix_speed()
161 		dev_err(dwmac->dev, "invalid speed %u\n", speed);  in imx_dwmac_fix_speed()
165 	err = clk_set_rate(dwmac->clk_tx, rate);  in imx_dwmac_fix_speed()
167 		dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);  in imx_dwmac_fix_speed()
173 	struct device_node *np = dev->of_node;  in imx_dwmac_parse_dt()
177 		dwmac->rmii_refclk_ext = true;  in imx_dwmac_parse_dt()
179 	dwmac->clk_tx = devm_clk_get(dev, "tx");  in imx_dwmac_parse_dt()
180 	if (IS_ERR(dwmac->clk_tx)) {  in imx_dwmac_parse_dt()
181 		dev_err(dev, "failed to get tx clock\n");  in imx_dwmac_parse_dt()
182 		return PTR_ERR(dwmac->clk_tx);  in imx_dwmac_parse_dt()
185 	dwmac->clk_mem = NULL;  in imx_dwmac_parse_dt()
187 		dwmac->clk_mem = devm_clk_get(dev, "mem");  in imx_dwmac_parse_dt()
188 		if (IS_ERR(dwmac->clk_mem)) {  in imx_dwmac_parse_dt()
189 			dev_err(dev, "failed to get mem clock\n");  in imx_dwmac_parse_dt()
190 			return PTR_ERR(dwmac->clk_mem);  in imx_dwmac_parse_dt()
199 		dwmac->intf_regmap = syscon_regmap_lookup_by_phandle(np, "intf_mode");  in imx_dwmac_parse_dt()
200 		if (IS_ERR(dwmac->intf_regmap))  in imx_dwmac_parse_dt()
201 			return PTR_ERR(dwmac->intf_regmap);  in imx_dwmac_parse_dt()
203 		err = of_property_read_u32_index(np, "intf_mode", 1, &dwmac->intf_reg_off);  in imx_dwmac_parse_dt()
225 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);  in imx_dwmac_probe()
227 		return -ENOMEM;  in imx_dwmac_probe()
233 	data = of_device_get_match_data(&pdev->dev);  in imx_dwmac_probe()
235 		dev_err(&pdev->dev, "failed to get match data\n");  in imx_dwmac_probe()
236 		ret = -EINVAL;  in imx_dwmac_probe()
240 	dwmac->ops = data;  in imx_dwmac_probe()
241 	dwmac->dev = &pdev->dev;  in imx_dwmac_probe()
243 	ret = imx_dwmac_parse_dt(dwmac, &pdev->dev);  in imx_dwmac_probe()
245 		dev_err(&pdev->dev, "failed to parse OF data\n");  in imx_dwmac_probe()
249 	plat_dat->addr64 = dwmac->ops->addr_width;  in imx_dwmac_probe()
250 	plat_dat->init = imx_dwmac_init;  in imx_dwmac_probe()
251 	plat_dat->exit = imx_dwmac_exit;  in imx_dwmac_probe()
252 	plat_dat->fix_mac_speed = imx_dwmac_fix_speed;  in imx_dwmac_probe()
253 	plat_dat->bsp_priv = dwmac;  in imx_dwmac_probe()
254 	dwmac->plat_dat = plat_dat;  in imx_dwmac_probe()
260 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);  in imx_dwmac_probe()
268 	imx_dwmac_exit(pdev, plat_dat->bsp_priv);  in imx_dwmac_probe()
288 	{ .compatible = "nxp,imx8mp-dwmac-eqos", .data = &imx8mp_dwmac_data },
289 	{ .compatible = "nxp,imx8dxl-dwmac-eqos", .data = &imx8dxl_dwmac_data },
298 		.name           = "imx-dwmac",
306 MODULE_DESCRIPTION("NXP imx8 DWMAC Specific Glue layer");