1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/clk-provider.h>
13 #include <linux/mdio-mux.h>
75 	val = readl(pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_recalc_rate()
85 	u32 val = readl(pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_enable()
89 	writel(val, pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_enable()
93 	writel(val, pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_enable()
100 	return readl_poll_timeout(pll->base + ETH_PLL_CTL0, val,  in g12a_ephy_pll_enable()
109 	val = readl(pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_disable()
112 	writel(val, pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_disable()
120 	val = readl(pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_is_enabled()
130 	writel(0x29c0040a, pll->base + ETH_PLL_CTL0);  in g12a_ephy_pll_init()
131 	writel(0x927e0000, pll->base + ETH_PLL_CTL1);  in g12a_ephy_pll_init()
132 	writel(0xac5f49e5, pll->base + ETH_PLL_CTL2);  in g12a_ephy_pll_init()
133 	writel(0x00000000, pll->base + ETH_PLL_CTL3);  in g12a_ephy_pll_init()
134 	writel(0x00000000, pll->base + ETH_PLL_CTL4);  in g12a_ephy_pll_init()
135 	writel(0x20200000, pll->base + ETH_PLL_CTL5);  in g12a_ephy_pll_init()
136 	writel(0x0000c002, pll->base + ETH_PLL_CTL6);  in g12a_ephy_pll_init()
137 	writel(0x00000023, pll->base + ETH_PLL_CTL7);  in g12a_ephy_pll_init()
156 	if (!__clk_is_enabled(priv->pll)) {  in g12a_enable_internal_mdio()
157 		ret = clk_prepare_enable(priv->pll);  in g12a_enable_internal_mdio()
163 	writel(EPHY_G12A_ID, priv->regs + ETH_PHY_CNTL0);  in g12a_enable_internal_mdio()
165 	/* Make sure we get a 0 -> 1 transition on the enable bit */  in g12a_enable_internal_mdio()
171 	writel(value, priv->regs + ETH_PHY_CNTL1);  in g12a_enable_internal_mdio()
175 	       priv->regs + ETH_PHY_CNTL2);  in g12a_enable_internal_mdio()
178 	writel(value, priv->regs + ETH_PHY_CNTL1);  in g12a_enable_internal_mdio()
188 	/* Reset the mdio bus mux */  in g12a_enable_external_mdio()
189 	writel_relaxed(0x0, priv->regs + ETH_PHY_CNTL2);  in g12a_enable_external_mdio()
192 	if (__clk_is_enabled(priv->pll))  in g12a_enable_external_mdio()
193 		clk_disable_unprepare(priv->pll);  in g12a_enable_external_mdio()
212 		return -EINVAL;  in g12a_mdio_switch_fn()
217 	{ .compatible = "amlogic,g12a-mdio-mux", },
228 	struct clk_mux *mux;  in g12a_ephy_glue_clk_register()  local
233 	/* get the mux parents */  in g12a_ephy_glue_clk_register()
246 	/* create the input mux */  in g12a_ephy_glue_clk_register()
247 	mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);  in g12a_ephy_glue_clk_register()
248 	if (!mux)  in g12a_ephy_glue_clk_register()
249 		return -ENOMEM;  in g12a_ephy_glue_clk_register()
251 	name = kasprintf(GFP_KERNEL, "%s#mux", dev_name(dev));  in g12a_ephy_glue_clk_register()
253 		return -ENOMEM;  in g12a_ephy_glue_clk_register()
261 	mux->reg = priv->regs + ETH_PLL_CTL0;  in g12a_ephy_glue_clk_register()
262 	mux->shift = __ffs(PLL_CTL0_SEL);  in g12a_ephy_glue_clk_register()
263 	mux->mask = PLL_CTL0_SEL >> mux->shift;  in g12a_ephy_glue_clk_register()
264 	mux->hw.init = &init;  in g12a_ephy_glue_clk_register()
266 	clk = devm_clk_register(dev, &mux->hw);  in g12a_ephy_glue_clk_register()
269 		dev_err(dev, "failed to register input mux\n");  in g12a_ephy_glue_clk_register()
276 		return -ENOMEM;  in g12a_ephy_glue_clk_register()
280 		return -ENOMEM;  in g12a_ephy_glue_clk_register()
289 	pll->base = priv->regs;  in g12a_ephy_glue_clk_register()
290 	pll->hw.init = &init;  in g12a_ephy_glue_clk_register()
292 	clk = devm_clk_register(dev, &pll->hw);  in g12a_ephy_glue_clk_register()
295 		dev_err(dev, "failed to register input mux\n");  in g12a_ephy_glue_clk_register()
299 	priv->pll = clk;  in g12a_ephy_glue_clk_register()
306 	struct device *dev = &pdev->dev;  in g12a_mdio_mux_probe()
313 		return -ENOMEM;  in g12a_mdio_mux_probe()
317 	priv->regs = devm_platform_ioremap_resource(pdev, 0);  in g12a_mdio_mux_probe()
318 	if (IS_ERR(priv->regs))  in g12a_mdio_mux_probe()
319 		return PTR_ERR(priv->regs);  in g12a_mdio_mux_probe()
331 	ret = mdio_mux_init(dev, dev->of_node, g12a_mdio_switch_fn,  in g12a_mdio_mux_probe()
332 			    &priv->mux_handle, dev, NULL);  in g12a_mdio_mux_probe()
334 		dev_err_probe(dev, ret, "mdio multiplexer init failed\n");  in g12a_mdio_mux_probe()
343 	mdio_mux_uninit(priv->mux_handle);  in g12a_mdio_mux_remove()
345 	if (__clk_is_enabled(priv->pll))  in g12a_mdio_mux_remove()
346 		clk_disable_unprepare(priv->pll);  in g12a_mdio_mux_remove()
353 		.name	= "g12a-mdio_mux",
359 MODULE_DESCRIPTION("Amlogic G12a MDIO multiplexer driver");