1 // SPDX-License-Identifier: GPL-2.0
3  * dwmac-imx.c - DWMAC Specific Glue layer for NXP imx8
33 #define MX93_GPR_ENET_QOS_INTF_MODE_MASK	GENMASK(3, 0)
34 #define MX93_GPR_ENET_QOS_INTF_MASK		GENMASK(3, 1)
70 	struct imx_priv_data *dwmac = plat_dat->bsp_priv;  in imx8mp_set_intf_mode()  local
73 	switch (plat_dat->mac_interface) {  in imx8mp_set_intf_mode()
79 		val |= (dwmac->rmii_refclk_ext ? 0 : GPR_ENET_QOS_CLK_TX_CLK_SEL);  in imx8mp_set_intf_mode()
89 		pr_debug("imx dwmac doesn't support %d interface\n",  in imx8mp_set_intf_mode()
90 			 plat_dat->mac_interface);  in imx8mp_set_intf_mode()
91 		return -EINVAL;  in imx8mp_set_intf_mode()
95 	return regmap_update_bits(dwmac->intf_regmap, dwmac->intf_reg_off,  in imx8mp_set_intf_mode()
110 	struct imx_priv_data *dwmac = plat_dat->bsp_priv;  in imx93_set_intf_mode()  local
113 	switch (plat_dat->mac_interface) {  in imx93_set_intf_mode()
127 		dev_dbg(dwmac->dev, "imx dwmac doesn't support %d interface\n",  in imx93_set_intf_mode()
128 			 plat_dat->mac_interface);  in imx93_set_intf_mode()
129 		return -EINVAL;  in imx93_set_intf_mode()
133 	return regmap_update_bits(dwmac->intf_regmap, dwmac->intf_reg_off,  in imx93_set_intf_mode()
139 	struct imx_priv_data *dwmac = priv;  in imx_dwmac_clks_config()  local
143 		ret = clk_prepare_enable(dwmac->clk_mem);  in imx_dwmac_clks_config()
145 			dev_err(dwmac->dev, "mem clock enable failed\n");  in imx_dwmac_clks_config()
149 		ret = clk_prepare_enable(dwmac->clk_tx);  in imx_dwmac_clks_config()
151 			dev_err(dwmac->dev, "tx clock enable failed\n");  in imx_dwmac_clks_config()
152 			clk_disable_unprepare(dwmac->clk_mem);  in imx_dwmac_clks_config()
156 		clk_disable_unprepare(dwmac->clk_tx);  in imx_dwmac_clks_config()
157 		clk_disable_unprepare(dwmac->clk_mem);  in imx_dwmac_clks_config()
166 	struct imx_priv_data *dwmac = priv;  in imx_dwmac_init()  local
169 	plat_dat = dwmac->plat_dat;  in imx_dwmac_init()
171 	if (dwmac->ops->set_intf_mode) {  in imx_dwmac_init()
172 		ret = dwmac->ops->set_intf_mode(plat_dat);  in imx_dwmac_init()
188 	struct imx_priv_data *dwmac = priv;  in imx_dwmac_fix_speed()  local
192 	plat_dat = dwmac->plat_dat;  in imx_dwmac_fix_speed()
194 	if (dwmac->ops->mac_rgmii_txclk_auto_adj ||  in imx_dwmac_fix_speed()
195 	    (plat_dat->mac_interface == PHY_INTERFACE_MODE_RMII) ||  in imx_dwmac_fix_speed()
196 	    (plat_dat->mac_interface == PHY_INTERFACE_MODE_MII))  in imx_dwmac_fix_speed()
210 		dev_err(dwmac->dev, "invalid speed %u\n", speed);  in imx_dwmac_fix_speed()
214 	err = clk_set_rate(dwmac->clk_tx, rate);  in imx_dwmac_fix_speed()
216 		dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);  in imx_dwmac_fix_speed()
221 	struct imx_priv_data *dwmac = priv;  in imx93_dwmac_fix_speed()  local
227 	if (!dwmac || mode != MLO_AN_FIXED)  in imx93_dwmac_fix_speed()
230 	if (regmap_read(dwmac->intf_regmap, dwmac->intf_reg_off, &iface))  in imx93_dwmac_fix_speed()
237 	old_ctrl = readl(dwmac->base_addr + MAC_CTRL_REG);  in imx93_dwmac_fix_speed()
239 	regmap_update_bits(dwmac->intf_regmap, dwmac->intf_reg_off,  in imx93_dwmac_fix_speed()
241 	writel(ctrl, dwmac->base_addr + MAC_CTRL_REG);  in imx93_dwmac_fix_speed()
244 	readl(dwmac->base_addr + MAC_CTRL_REG);  in imx93_dwmac_fix_speed()
248 	regmap_update_bits(dwmac->intf_regmap, dwmac->intf_reg_off,  in imx93_dwmac_fix_speed()
251 	writel(old_ctrl, dwmac->base_addr + MAC_CTRL_REG);  in imx93_dwmac_fix_speed()
263 	if (plat_dat->mac_interface == PHY_INTERFACE_MODE_RMII) {  in imx_dwmac_mx93_reset()
274 imx_dwmac_parse_dt(struct imx_priv_data *dwmac, struct device *dev)  in imx_dwmac_parse_dt()  argument
276 	struct device_node *np = dev->of_node;  in imx_dwmac_parse_dt()
279 	dwmac->rmii_refclk_ext = of_property_read_bool(np, "snps,rmii_refclk_ext");  in imx_dwmac_parse_dt()
281 	dwmac->clk_tx = devm_clk_get(dev, "tx");  in imx_dwmac_parse_dt()
282 	if (IS_ERR(dwmac->clk_tx)) {  in imx_dwmac_parse_dt()
284 		return PTR_ERR(dwmac->clk_tx);  in imx_dwmac_parse_dt()
287 	dwmac->clk_mem = NULL;  in imx_dwmac_parse_dt()
291 		dwmac->clk_mem = devm_clk_get(dev, "mem");  in imx_dwmac_parse_dt()
292 		if (IS_ERR(dwmac->clk_mem)) {  in imx_dwmac_parse_dt()
294 			return PTR_ERR(dwmac->clk_mem);  in imx_dwmac_parse_dt()
304 		dwmac->intf_regmap = syscon_regmap_lookup_by_phandle(np, "intf_mode");  in imx_dwmac_parse_dt()
305 		if (IS_ERR(dwmac->intf_regmap))  in imx_dwmac_parse_dt()
306 			return PTR_ERR(dwmac->intf_regmap);  in imx_dwmac_parse_dt()
308 		err = of_property_read_u32_index(np, "intf_mode", 1, &dwmac->intf_reg_off);  in imx_dwmac_parse_dt()
322 	struct imx_priv_data *dwmac;  in imx_dwmac_probe()  local
330 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);  in imx_dwmac_probe()
331 	if (!dwmac)  in imx_dwmac_probe()
332 		return -ENOMEM;  in imx_dwmac_probe()
338 	data = of_device_get_match_data(&pdev->dev);  in imx_dwmac_probe()
340 		dev_err(&pdev->dev, "failed to get match data\n");  in imx_dwmac_probe()
341 		return -EINVAL;  in imx_dwmac_probe()
344 	dwmac->ops = data;  in imx_dwmac_probe()
345 	dwmac->dev = &pdev->dev;  in imx_dwmac_probe()
347 	ret = imx_dwmac_parse_dt(dwmac, &pdev->dev);  in imx_dwmac_probe()
349 		dev_err(&pdev->dev, "failed to parse OF data\n");  in imx_dwmac_probe()
353 	if (data->flags & STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY)  in imx_dwmac_probe()
354 		plat_dat->flags |= STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY;  in imx_dwmac_probe()
357 	for (int i = 1; i < plat_dat->tx_queues_to_use; i++)  in imx_dwmac_probe()
358 		plat_dat->tx_queues_cfg[i].tbs_en = 1;  in imx_dwmac_probe()
360 	plat_dat->host_dma_width = dwmac->ops->addr_width;  in imx_dwmac_probe()
361 	plat_dat->init = imx_dwmac_init;  in imx_dwmac_probe()
362 	plat_dat->exit = imx_dwmac_exit;  in imx_dwmac_probe()
363 	plat_dat->clks_config = imx_dwmac_clks_config;  in imx_dwmac_probe()
364 	plat_dat->fix_mac_speed = imx_dwmac_fix_speed;  in imx_dwmac_probe()
365 	plat_dat->bsp_priv = dwmac;  in imx_dwmac_probe()
366 	dwmac->plat_dat = plat_dat;  in imx_dwmac_probe()
367 	dwmac->base_addr = stmmac_res.addr;  in imx_dwmac_probe()
369 	ret = imx_dwmac_clks_config(dwmac, true);  in imx_dwmac_probe()
373 	ret = imx_dwmac_init(pdev, dwmac);  in imx_dwmac_probe()
377 	if (dwmac->ops->fix_mac_speed)  in imx_dwmac_probe()
378 		plat_dat->fix_mac_speed = dwmac->ops->fix_mac_speed;  in imx_dwmac_probe()
379 	dwmac->plat_dat->fix_soc_reset = dwmac->ops->fix_soc_reset;  in imx_dwmac_probe()
381 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);  in imx_dwmac_probe()
388 	imx_dwmac_exit(pdev, plat_dat->bsp_priv);  in imx_dwmac_probe()
390 	imx_dwmac_clks_config(dwmac, false);  in imx_dwmac_probe()
416 	{ .compatible = "nxp,imx8mp-dwmac-eqos", .data = &imx8mp_dwmac_data },
417 	{ .compatible = "nxp,imx8dxl-dwmac-eqos", .data = &imx8dxl_dwmac_data },
418 	{ .compatible = "nxp,imx93-dwmac-eqos", .data = &imx93_dwmac_data },
427 		.name           = "imx-dwmac",
435 MODULE_DESCRIPTION("NXP imx8 DWMAC Specific Glue layer");