1 // SPDX-License-Identifier: GPL-2.0+
8 #include <clk-uclass.h>
10 #include <syscon.h>
22 static int utmi_clk_enable(struct clk *clk)  in utmi_clk_enable()  argument
24 	struct pmc_platdata *plat = dev_get_platdata(clk->dev);  in utmi_clk_enable()
25 	struct at91_pmc *pmc = plat->reg_base;  in utmi_clk_enable()
26 	struct clk clk_dev;  in utmi_clk_enable()
33 	if (readl(&pmc->sr) & AT91_PMC_LOCKU)  in utmi_clk_enable()
41 	err = clk_get_by_index(clk->dev, 0, &clk_dev);  in utmi_clk_enable()
43 		return -EINVAL;  in utmi_clk_enable()
65 		return -EINVAL;  in utmi_clk_enable()
68 	if (plat->regmap_sfr) {  in utmi_clk_enable()
69 		err = regmap_read(plat->regmap_sfr, AT91_SFR_UTMICKTRIM, &tmp);  in utmi_clk_enable()
71 			return -EINVAL;  in utmi_clk_enable()
75 		err = regmap_write(plat->regmap_sfr, AT91_SFR_UTMICKTRIM, tmp);  in utmi_clk_enable()
77 			return -EINVAL;  in utmi_clk_enable()
80 		return -EINVAL;  in utmi_clk_enable()
83 	tmp = readl(&pmc->uckr);  in utmi_clk_enable()
87 	writel(tmp, &pmc->uckr);  in utmi_clk_enable()
89 	while ((--timeout) && !(readl(&pmc->sr) & AT91_PMC_LOCKU))  in utmi_clk_enable()
93 		return -ETIMEDOUT;  in utmi_clk_enable()
99 static ulong utmi_clk_get_rate(struct clk *clk)  in utmi_clk_get_rate()  argument
101 	/* UTMI clk rate is fixed. */  in utmi_clk_get_rate()
113 	struct udevice *syscon;  in utmi_clk_ofdata_to_platdata()  local
116 				     "regmap-sfr", &syscon);  in utmi_clk_ofdata_to_platdata()
118 	if (syscon)  in utmi_clk_ofdata_to_platdata()
119 		plat->regmap_sfr = syscon_get_regmap(syscon);  in utmi_clk_ofdata_to_platdata()
130 	{ .compatible = "atmel,at91sam9x5-clk-utmi" },
135 	.name = "at91sam9x5-utmi-clk",