1 // SPDX-License-Identifier: GPL-2.0
7 #define pr_fmt(fmt) "clk-gemini: " fmt
15 #include <linux/clk-provider.h>
21 #include <linux/reset-controller.h>
22 #include <dt-bindings/reset/cortina,gemini-reset.h>
23 #include <dt-bindings/clock/cortina,gemini-clock.h>
53  * struct gemini_gate_data - Gemini gated clocks
67  * struct clk_gemini_pci - Gemini PCI clock
77  * struct gemini_reset - gemini reset controller
90 	{ 1, "security-gate", "secdiv", 0 },
91 	{ 2, "gmac0-gate", "ahb", 0 },
92 	{ 3, "gmac1-gate", "ahb", 0 },
93 	{ 4, "sata0-gate", "ahb", 0 },
94 	{ 5, "sata1-gate", "ahb", 0 },
95 	{ 6, "usb0-gate", "ahb", 0 },
96 	{ 7, "usb1-gate", "ahb", 0 },
97 	{ 8, "ide-gate", "ahb", 0 },
98 	{ 9, "pci-gate", "ahb", 0 },
103 	{ 10, "ddr-gate", "ahb", CLK_IS_CRITICAL },
108 	{ 11, "flash-gate", "ahb", CLK_IGNORE_UNUSED },
109 	{ 12, "tvc-gate", "ahb", 0 },
110 	{ 13, "boot-gate", "apb", 0 },
123 	regmap_read(pciclk->map, GEMINI_GLOBAL_MISC_CONTROL, &val);  in gemini_pci_recalc_rate()
144 		return regmap_update_bits(pciclk->map,  in gemini_pci_set_rate()
148 		return regmap_update_bits(pciclk->map,  in gemini_pci_set_rate()
151 	return -EINVAL;  in gemini_pci_set_rate()
158 	regmap_update_bits(pciclk->map, GEMINI_GLOBAL_CLOCK_CONTROL,  in gemini_pci_enable()
167 	regmap_update_bits(pciclk->map, GEMINI_GLOBAL_CLOCK_CONTROL,  in gemini_pci_disable()
176 	regmap_read(pciclk->map, GEMINI_GLOBAL_CLOCK_CONTROL, &val);  in gemini_pci_is_enabled()
199 		return ERR_PTR(-ENOMEM);  in gemini_pci_clk_setup()
206 	pciclk->map = map;  in gemini_pci_clk_setup()
207 	pciclk->hw.init = &init;  in gemini_pci_clk_setup()
209 	ret = clk_hw_register(NULL, &pciclk->hw);  in gemini_pci_clk_setup()
215 	return &pciclk->hw;  in gemini_pci_clk_setup()
219  * This is a self-deasserting reset controller.
227 	return regmap_write(gr->map,  in gemini_reset()
251 	ret = regmap_read(gr->map, GEMINI_GLOBAL_SOFT_RESET, &val);  in gemini_reset_status()
274 	struct device *dev = &pdev->dev;  in gemini_clk_probe()
275 	struct device_node *np = dev->of_node;  in gemini_clk_probe()
283 		return -ENOMEM;  in gemini_clk_probe()
296 	gr->map = map;  in gemini_clk_probe()
297 	gr->rcdev.owner = THIS_MODULE;  in gemini_clk_probe()
298 	gr->rcdev.nr_resets = 32;  in gemini_clk_probe()
299 	gr->rcdev.ops = &gemini_reset_ops;  in gemini_clk_probe()
300 	gr->rcdev.of_node = np;  in gemini_clk_probe()
302 	ret = devm_reset_controller_register(dev, &gr->rcdev);  in gemini_clk_probe()
308 	/* RTC clock 32768 Hz */  in gemini_clk_probe()
310 	gemini_clk_data->hws[GEMINI_CLK_RTC] = hw;  in gemini_clk_probe()
319 	gemini_clk_data->hws[GEMINI_CLK_CPU] = hw;  in gemini_clk_probe()
339 		gemini_clk_data->hws[GEMINI_CLK_GATES + i] =  in gemini_clk_probe()
340 			clk_hw_register_gate(NULL, gd->name,  in gemini_clk_probe()
341 					     gd->parent_name,  in gemini_clk_probe()
342 					     gd->flags,  in gemini_clk_probe()
344 					     gd->bit_idx,  in gemini_clk_probe()
350 	 * The TV Interface Controller has a 5-bit half divider register.  in gemini_clk_probe()
360 	gemini_clk_data->hws[GEMINI_CLK_TVC] = hw;  in gemini_clk_probe()
364 	gemini_clk_data->hws[GEMINI_CLK_PCI] = hw;  in gemini_clk_probe()
368 	gemini_clk_data->hws[GEMINI_CLK_UART] = hw;  in gemini_clk_probe()
374 	{ .compatible = "cortina,gemini-syscon", },
381 		.name = "gemini-clk",
403 	gemini_clk_data->num = GEMINI_NUM_CLKS;  in gemini_cc_init()
410 		gemini_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);  in gemini_cc_init()
419 	 * but as this is an MMIO-backed regmap, subsequent regmap  in gemini_cc_init()
440 	/* VCO clock derived from the crystal */  in gemini_cc_init()
446 	hw = clk_hw_register_fixed_factor(NULL, "vco", "xtal", 0, mult, div);  in gemini_cc_init()
448 	/* The AHB clock is always 1/3 of the VCO */  in gemini_cc_init()
449 	hw = clk_hw_register_fixed_factor(NULL, "ahb", "vco", 0, 1, 3);  in gemini_cc_init()
450 	gemini_clk_data->hws[GEMINI_CLK_AHB] = hw;  in gemini_cc_init()
454 	gemini_clk_data->hws[GEMINI_CLK_APB] = hw;  in gemini_cc_init()
459 CLK_OF_DECLARE_DRIVER(gemini_cc, "cortina,gemini-syscon", gemini_cc_init);