1 // SPDX-License-Identifier: GPL-2.0+
10 #include <linux/clk-provider.h>
44 #define  REG21_SEL_TX_CK_INV	BIT(7)
66 #define  REG33_MODE_SET_DONE	BIT(7)
67 #define  REG33_FIX_DA		BIT(1)
70 #define  REG34_PHY_READY	BIT(7)
71 #define  REG34_PLL_LOCK		BIT(6)
72 #define  REG34_PHY_CLK_READY	BIT(5)
233 		.pll_div_regs = { 0x4e, 0x32, 0xa7, 0x10, 0x80, 0x40 },
242 		.pll_div_regs = { 0x52, 0x32, 0x82, 0x01, 0x88, 0x47 },
251 		.pll_div_regs = { 0x55, 0x32, 0x8c, 0x05, 0x90, 0x4b },
254 		.pll_div_regs = { 0x57, 0x32, 0x98, 0x07, 0x90, 0x49 },
257 		.pll_div_regs = { 0x58, 0x32, 0x84, 0x03, 0x82, 0x41 },
260 		.pll_div_regs = { 0x5a, 0x32, 0x89, 0x88, 0x80, 0x40 },
266 		.pll_div_regs = { 0x5a, 0x32, 0xfd, 0x0c, 0x80, 0x40 },
382 	{ PHY_REG_22, 0x30 }, { PHY_REG_23, 0x32 },
420 	switch (cfg->pixclk) {  in fsl_samsung_hdmi_phy_configure_pixclk()
445 	       phy->regs + PHY_REG_21);  in fsl_samsung_hdmi_phy_configure_pixclk()
452 	u32 pclk = cfg->pixclk;  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
457 	switch (cfg->pixclk) {  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
462 		div = 2;  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
472 	writeb(FIELD_PREP(REG12_CK_DIV_MASK, ilog2(div)), phy->regs + PHY_REG_12);  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
479 	 *   2nd) Increase resolution to avoid rounding issues  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
492 	       phy->regs + PHY_REG_13);  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
493 	writeb(FIELD_PREP(REG14_TOL_MASK, 2) |  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
494 	       FIELD_PREP(REG14_RP_CODE_MASK, 2) |  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
496 	       phy->regs + PHY_REG_14);  in fsl_samsung_hdmi_phy_configure_pll_lock_det()
506 	writeb(REG33_FIX_DA, phy->regs + PHY_REG_33);  in fsl_samsung_hdmi_phy_configure()
510 		writeb(common_phy_cfg[i].val, phy->regs + common_phy_cfg[i].reg);  in fsl_samsung_hdmi_phy_configure()
514 		writeb(cfg->pll_div_regs[i], phy->regs + PHY_REG_02 + i * 4);  in fsl_samsung_hdmi_phy_configure()
519 	writeb(REG33_FIX_DA | REG33_MODE_SET_DONE, phy->regs + PHY_REG_33);  in fsl_samsung_hdmi_phy_configure()
521 	ret = readb_poll_timeout(phy->regs + PHY_REG_34, val,  in fsl_samsung_hdmi_phy_configure()
524 		dev_err(phy->dev, "PLL failed to lock\n");  in fsl_samsung_hdmi_phy_configure()
534 	if (!phy->cur_cfg)  in phy_clk_recalc_rate()
537 	return phy->cur_cfg->pixclk;  in phy_clk_recalc_rate()
545 	for (i = ARRAY_SIZE(phy_pll_cfg) - 1; i >= 0; i--)  in phy_clk_round_rate()
549 	return -EINVAL;  in phy_clk_round_rate()
558 	for (i = ARRAY_SIZE(phy_pll_cfg) - 1; i >= 0; i--)  in phy_clk_set_rate()
563 		return -EINVAL;  in phy_clk_set_rate()
565 	phy->cur_cfg = &phy_pll_cfg[i];  in phy_clk_set_rate()
567 	return fsl_samsung_hdmi_phy_configure(phy, phy->cur_cfg);  in phy_clk_set_rate()
578 	struct device *dev = phy->dev;  in phy_clk_register()
579 	struct device_node *np = dev->of_node;  in phy_clk_register()
585 	parent_name = __clk_get_name(phy->refclk);  in phy_clk_register()
593 	phy->hw.init = &init;  in phy_clk_register()
595 	phyclk = devm_clk_register(dev, &phy->hw);  in phy_clk_register()
613 	phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);  in fsl_samsung_hdmi_phy_probe()
615 		return -ENOMEM;  in fsl_samsung_hdmi_phy_probe()
618 	phy->dev = &pdev->dev;  in fsl_samsung_hdmi_phy_probe()
620 	phy->regs = devm_platform_ioremap_resource(pdev, 0);  in fsl_samsung_hdmi_phy_probe()
621 	if (IS_ERR(phy->regs))  in fsl_samsung_hdmi_phy_probe()
622 		return PTR_ERR(phy->regs);  in fsl_samsung_hdmi_phy_probe()
624 	phy->apbclk = devm_clk_get(phy->dev, "apb");  in fsl_samsung_hdmi_phy_probe()
625 	if (IS_ERR(phy->apbclk))  in fsl_samsung_hdmi_phy_probe()
626 		return dev_err_probe(phy->dev, PTR_ERR(phy->apbclk),  in fsl_samsung_hdmi_phy_probe()
629 	phy->refclk = devm_clk_get(phy->dev, "ref");  in fsl_samsung_hdmi_phy_probe()
630 	if (IS_ERR(phy->refclk))  in fsl_samsung_hdmi_phy_probe()
631 		return dev_err_probe(phy->dev, PTR_ERR(phy->refclk),  in fsl_samsung_hdmi_phy_probe()
634 	ret = clk_prepare_enable(phy->apbclk);  in fsl_samsung_hdmi_phy_probe()
636 		dev_err(phy->dev, "failed to enable apbclk\n");  in fsl_samsung_hdmi_phy_probe()
640 	pm_runtime_get_noresume(phy->dev);  in fsl_samsung_hdmi_phy_probe()
641 	pm_runtime_set_active(phy->dev);  in fsl_samsung_hdmi_phy_probe()
642 	pm_runtime_enable(phy->dev);  in fsl_samsung_hdmi_phy_probe()
646 		dev_err(&pdev->dev, "register clk failed\n");  in fsl_samsung_hdmi_phy_probe()
650 	pm_runtime_put(phy->dev);  in fsl_samsung_hdmi_phy_probe()
655 	clk_disable_unprepare(phy->apbclk);  in fsl_samsung_hdmi_phy_probe()
662 	of_clk_del_provider(pdev->dev.of_node);  in fsl_samsung_hdmi_phy_remove()
669 	clk_disable_unprepare(phy->apbclk);  in fsl_samsung_hdmi_phy_suspend()
679 	ret = clk_prepare_enable(phy->apbclk);  in fsl_samsung_hdmi_phy_resume()
681 		dev_err(phy->dev, "failed to enable apbclk\n");  in fsl_samsung_hdmi_phy_resume()
685 	if (phy->cur_cfg)  in fsl_samsung_hdmi_phy_resume()
686 		ret = fsl_samsung_hdmi_phy_configure(phy, phy->cur_cfg);  in fsl_samsung_hdmi_phy_resume()
698 		.compatible = "fsl,imx8mp-hdmi-phy",
709 		.name = "fsl-samsung-hdmi-phy",