drivers/clk/ingenic/jz4760-cgu.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * JZ4760 SoC CGU driver
  * Copyright 2018, Paul Cercueil <paul@crapouillou.net>
  */

 #include <linux/bitops.h>
 #include <linux/clk-provider.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/of.h>

 #include <linux/clk.h>

 #include <dt-bindings/clock/ingenic,jz4760-cgu.h>

 #include "cgu.h"
 #include "pm.h"

 #define MHZ (1000 * 1000)

 /*
  * CPM registers offset address definition
  */
 #define CGU_REG_CPCCR		0x00
 #define CGU_REG_LCR		0x04
 #define CGU_REG_CPPCR0		0x10
 #define CGU_REG_CLKGR0		0x20
 #define CGU_REG_OPCR		0x24
 #define CGU_REG_CLKGR1		0x28
 #define CGU_REG_CPPCR1		0x30
 #define CGU_REG_USBPCR		0x3c
 #define CGU_REG_USBCDR		0x50
 #define CGU_REG_I2SCDR		0x60
 #define CGU_REG_LPCDR		0x64
 #define CGU_REG_MSCCDR		0x68
 #define CGU_REG_UHCCDR		0x6c
 #define CGU_REG_SSICDR		0x74
 #define CGU_REG_CIMCDR		0x7c
 #define CGU_REG_GPSCDR		0x80
 #define CGU_REG_PCMCDR		0x84
 #define CGU_REG_GPUCDR		0x88

 static const s8 pll_od_encoding[8] = {
 	0x0, 0x1, -1, 0x2, -1, -1, -1, 0x3,
 };

 static const u8 jz4760_cgu_cpccr_div_table[] = {
 	1, 2, 3, 4, 6, 8,
 };

 static const u8 jz4760_cgu_pll_half_div_table[] = {
 	2, 1,
 };

 static void
 jz4760_cgu_calc_m_n_od(const struct ingenic_cgu_pll_info *pll_info,
 		       unsigned long rate, unsigned long parent_rate,
 		       unsigned int *pm, unsigned int *pn, unsigned int *pod)
 {
 	unsigned int m, n, od, m_max = (1 << pll_info->m_bits) - 2;

 	/* The frequency after the N divider must be between 1 and 50 MHz. */
 	n = parent_rate / (1 * MHZ);

 	/* The N divider must be >= 2. */
 	n = clamp_val(n, 2, 1 << pll_info->n_bits);

 	for (;; n >>= 1) {
 		od = (unsigned int)-1;

 		do {
 			m = (rate / MHZ) * (1 << ++od) * n / (parent_rate / MHZ);
 		} while ((m > m_max || m & 1) && (od < 4));

 		if (od < 4 && m >= 4 && m <= m_max)
 			break;
 	}

 	*pm = m;
 	*pn = n;
 	*pod = 1 << od;
 }

 static const struct ingenic_cgu_clk_info jz4760_cgu_clocks[] = {

 	/* External clocks */

 	[JZ4760_CLK_EXT] = { "ext", CGU_CLK_EXT },
 	[JZ4760_CLK_OSC32K] = { "osc32k", CGU_CLK_EXT },

 	/* PLLs */

 	[JZ4760_CLK_PLL0] = {
 		"pll0", CGU_CLK_PLL,
 		.parents = { JZ4760_CLK_EXT },
 		.pll = {
 			.reg = CGU_REG_CPPCR0,
 			.rate_multiplier = 1,
 			.m_shift = 23,
 			.m_bits = 8,
 			.m_offset = 0,
 			.n_shift = 18,
 			.n_bits = 4,
 			.n_offset = 0,
 			.od_shift = 16,
 			.od_bits = 2,
 			.od_max = 8,
 			.od_encoding = pll_od_encoding,
 			.bypass_reg = CGU_REG_CPPCR0,
 			.bypass_bit = 9,
 			.enable_bit = 8,
 			.stable_bit = 10,
 			.calc_m_n_od = jz4760_cgu_calc_m_n_od,
 		},
 	},

 	[JZ4760_CLK_PLL1] = {
 		/* TODO: PLL1 can depend on PLL0 */
 		"pll1", CGU_CLK_PLL,
 		.parents = { JZ4760_CLK_EXT },
 		.pll = {
 			.reg = CGU_REG_CPPCR1,
 			.rate_multiplier = 1,
 			.m_shift = 23,
 			.m_bits = 8,
 			.m_offset = 0,
 			.n_shift = 18,
 			.n_bits = 4,
 			.n_offset = 0,
 			.od_shift = 16,
 			.od_bits = 2,
 			.od_max = 8,
 			.od_encoding = pll_od_encoding,
 			.bypass_bit = -1,
 			.enable_bit = 7,
 			.stable_bit = 6,
 			.calc_m_n_od = jz4760_cgu_calc_m_n_od,
 		},
 	},

 	/* Main clocks */

 	[JZ4760_CLK_CCLK] = {
 		"cclk", CGU_CLK_DIV,
 		/*
 		 * Disabling the CPU clock or any parent clocks will hang the
 		 * system; mark it critical.
 		 */
 		.flags = CLK_IS_CRITICAL,
 		.parents = { JZ4760_CLK_PLL0, },
 		.div = {
 			CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1, 0,
 			jz4760_cgu_cpccr_div_table,
 		},
 	},
 	[JZ4760_CLK_HCLK] = {
 		"hclk", CGU_CLK_DIV,
 		.parents = { JZ4760_CLK_PLL0, },
 		.div = {
 			CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1, 0,
 			jz4760_cgu_cpccr_div_table,
 		},
 	},
 	[JZ4760_CLK_SCLK] = {
 		"sclk", CGU_CLK_DIV,
 		.parents = { JZ4760_CLK_PLL0, },
 		.div = {
 			CGU_REG_CPCCR, 24, 1, 4, 22, -1, -1, 0,
 			jz4760_cgu_cpccr_div_table,
 		},
 	},
 	[JZ4760_CLK_H2CLK] = {
 		"h2clk", CGU_CLK_DIV,
 		.parents = { JZ4760_CLK_PLL0, },
 		.div = {
 			CGU_REG_CPCCR, 16, 1, 4, 22, -1, -1, 0,
 			jz4760_cgu_cpccr_div_table,
 		},
 	},
 	[JZ4760_CLK_MCLK] = {
 		"mclk", CGU_CLK_DIV,
 		/*
 		 * Disabling MCLK or its parents will render DRAM
 		 * inaccessible; mark it critical.
 		 */
 		.flags = CLK_IS_CRITICAL,
 		.parents = { JZ4760_CLK_PLL0, },
 		.div = {
 			CGU_REG_CPCCR, 12, 1, 4, 22, -1, -1, 0,
 			jz4760_cgu_cpccr_div_table,
 		},
 	},
 	[JZ4760_CLK_PCLK] = {
 		"pclk", CGU_CLK_DIV,
 		.parents = { JZ4760_CLK_PLL0, },
 		.div = {
 			CGU_REG_CPCCR, 8, 1, 4, 22, -1, -1, 0,
 			jz4760_cgu_cpccr_div_table,
 		},
 	},

 	/* Divided clocks */

 	[JZ4760_CLK_PLL0_HALF] = {
 		"pll0_half", CGU_CLK_DIV,
 		.parents = { JZ4760_CLK_PLL0 },
 		.div = {
 			CGU_REG_CPCCR, 21, 1, 1, 22, -1, -1, 0,
 			jz4760_cgu_pll_half_div_table,
 		},
 	},

 	/* Those divided clocks can connect to PLL0 or PLL1 */

 	[JZ4760_CLK_UHC] = {
 		"uhc", CGU_CLK_DIV | CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
 		.mux = { CGU_REG_UHCCDR, 31, 1 },
 		.div = { CGU_REG_UHCCDR, 0, 1, 4, -1, -1, -1 },
 		.gate = { CGU_REG_CLKGR0, 24 },
 	},
 	[JZ4760_CLK_GPU] = {
 		"gpu", CGU_CLK_DIV | CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
 		.mux = { CGU_REG_GPUCDR, 31, 1 },
 		.div = { CGU_REG_GPUCDR, 0, 1, 3, -1, -1, -1 },
 		.gate = { CGU_REG_CLKGR1, 9 },
 	},
 	[JZ4760_CLK_LPCLK_DIV] = {
 		"lpclk_div", CGU_CLK_DIV | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
 		.mux = { CGU_REG_LPCDR, 29, 1 },
 		.div = { CGU_REG_LPCDR, 0, 1, 11, -1, -1, -1 },
 	},
 	[JZ4760_CLK_TVE] = {
 		"tve", CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_LPCLK_DIV, JZ4760_CLK_EXT, },
 		.mux = { CGU_REG_LPCDR, 31, 1 },
 		.gate = { CGU_REG_CLKGR0, 27 },
 	},
 	[JZ4760_CLK_LPCLK] = {
 		"lpclk", CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_LPCLK_DIV, JZ4760_CLK_TVE, },
 		.mux = { CGU_REG_LPCDR, 30, 1 },
 		.gate = { CGU_REG_CLKGR0, 28 },
 	},
 	[JZ4760_CLK_GPS] = {
 		"gps", CGU_CLK_DIV | CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
 		.mux = { CGU_REG_GPSCDR, 31, 1 },
 		.div = { CGU_REG_GPSCDR, 0, 1, 4, -1, -1, -1 },
 		.gate = { CGU_REG_CLKGR0, 22 },
 	},

 	/* Those divided clocks can connect to EXT, PLL0 or PLL1 */

 	[JZ4760_CLK_PCM] = {
 		"pcm", CGU_CLK_DIV | CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_EXT, -1,
 			JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1 },
 		.mux = { CGU_REG_PCMCDR, 30, 2 },
 		.div = { CGU_REG_PCMCDR, 0, 1, 9, -1, -1, -1, BIT(0) },
 		.gate = { CGU_REG_CLKGR1, 8 },
 	},
 	[JZ4760_CLK_I2S] = {
 		"i2s", CGU_CLK_DIV | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_EXT, -1,
 			JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1 },
 		.mux = { CGU_REG_I2SCDR, 30, 2 },
 		.div = { CGU_REG_I2SCDR, 0, 1, 9, -1, -1, -1, BIT(0) },
 	},
 	[JZ4760_CLK_OTG] = {
 		"usb", CGU_CLK_DIV | CGU_CLK_GATE | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_EXT, -1,
 			JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1 },
 		.mux = { CGU_REG_USBCDR, 30, 2 },
 		.div = { CGU_REG_USBCDR, 0, 1, 8, -1, -1, -1 },
 		.gate = { CGU_REG_CLKGR0, 2 },
 	},

 	/* Those divided clocks can connect to EXT or PLL0 */
 	[JZ4760_CLK_MMC_MUX] = {
 		"mmc_mux", CGU_CLK_MUX | CGU_CLK_DIV,
 		.parents = { JZ4760_CLK_EXT, JZ4760_CLK_PLL0_HALF, },
 		.mux = { CGU_REG_MSCCDR, 31, 1 },
 		.div = { CGU_REG_MSCCDR, 0, 1, 6, -1, -1, -1, BIT(0) },
 	},
 	[JZ4760_CLK_SSI_MUX] = {
 		"ssi_mux", CGU_CLK_DIV | CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_EXT, JZ4760_CLK_PLL0_HALF, },
 		.mux = { CGU_REG_SSICDR, 31, 1 },
 		.div = { CGU_REG_SSICDR, 0, 1, 6, -1, -1, -1, BIT(0) },
 	},

 	/* These divided clock can connect to PLL0 only */
 	[JZ4760_CLK_CIM] = {
 		"cim", CGU_CLK_DIV | CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_PLL0_HALF },
 		.div = { CGU_REG_CIMCDR, 0, 1, 8, -1, -1, -1 },
 		.gate = { CGU_REG_CLKGR0, 26 },
 	},

 	/* Gate-only clocks */

 	[JZ4760_CLK_SSI0] = {
 		"ssi0", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_SSI_MUX, },
 		.gate = { CGU_REG_CLKGR0, 4 },
 	},
 	[JZ4760_CLK_SSI1] = {
 		"ssi1", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_SSI_MUX, },
 		.gate = { CGU_REG_CLKGR0, 19 },
 	},
 	[JZ4760_CLK_SSI2] = {
 		"ssi2", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_SSI_MUX, },
 		.gate = { CGU_REG_CLKGR0, 20 },
 	},
 	[JZ4760_CLK_DMA] = {
 		"dma", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_H2CLK, },
 		.gate = { CGU_REG_CLKGR0, 21 },
 	},
 	[JZ4760_CLK_MDMA] = {
 		"mdma", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_HCLK, },
 		.gate = { CGU_REG_CLKGR0, 25 },
 	},
 	[JZ4760_CLK_BDMA] = {
 		"bdma", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_HCLK, },
 		.gate = { CGU_REG_CLKGR1, 0 },
 	},
 	[JZ4760_CLK_I2C0] = {
 		"i2c0", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 5 },
 	},
 	[JZ4760_CLK_I2C1] = {
 		"i2c1", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 6 },
 	},
 	[JZ4760_CLK_UART0] = {
 		"uart0", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 15 },
 	},
 	[JZ4760_CLK_UART1] = {
 		"uart1", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 16 },
 	},
 	[JZ4760_CLK_UART2] = {
 		"uart2", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 17 },
 	},
 	[JZ4760_CLK_UART3] = {
 		"uart3", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 18 },
 	},
 	[JZ4760_CLK_IPU] = {
 		"ipu", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_HCLK, },
 		.gate = { CGU_REG_CLKGR0, 29 },
 	},
 	[JZ4760_CLK_ADC] = {
 		"adc", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 14 },
 	},
 	[JZ4760_CLK_AIC] = {
 		"aic", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_EXT, },
 		.gate = { CGU_REG_CLKGR0, 8 },
 	},
 	[JZ4760_CLK_VPU] = {
 		"vpu", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_HCLK, },
 		.gate = { CGU_REG_LCR, 30, false, 150 },
 	},
 	[JZ4760_CLK_MMC0] = {
 		"mmc0", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_MMC_MUX, },
 		.gate = { CGU_REG_CLKGR0, 3 },
 	},
 	[JZ4760_CLK_MMC1] = {
 		"mmc1", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_MMC_MUX, },
 		.gate = { CGU_REG_CLKGR0, 11 },
 	},
 	[JZ4760_CLK_MMC2] = {
 		"mmc2", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_MMC_MUX, },
 		.gate = { CGU_REG_CLKGR0, 12 },
 	},
 	[JZ4760_CLK_UHC_PHY] = {
 		"uhc_phy", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_UHC, },
 		.gate = { CGU_REG_OPCR, 5 },
 	},
 	[JZ4760_CLK_OTG_PHY] = {
 		"usb_phy", CGU_CLK_GATE,
 		.parents = { JZ4760_CLK_OTG },
 		.gate = { CGU_REG_OPCR, 7, true, 50 },
 	},

 	/* Custom clocks */
 	[JZ4760_CLK_EXT512] = {
 		"ext/512", CGU_CLK_FIXDIV,
 		.parents = { JZ4760_CLK_EXT },
 		.fixdiv = { 512 },
 	},
 	[JZ4760_CLK_RTC] = {
 		"rtc", CGU_CLK_MUX,
 		.parents = { JZ4760_CLK_EXT512, JZ4760_CLK_OSC32K, },
 		.mux = { CGU_REG_OPCR, 2, 1},
 	},
 };

 static void __init jz4760_cgu_init(struct device_node *np)
 {
 	struct ingenic_cgu *cgu;
 	int retval;

 	cgu = ingenic_cgu_new(jz4760_cgu_clocks,
 			      ARRAY_SIZE(jz4760_cgu_clocks), np);
 	if (!cgu) {
 		pr_err("%s: failed to initialise CGU\n", __func__);
 		return;
 	}

 	retval = ingenic_cgu_register_clocks(cgu);
 	if (retval)
 		pr_err("%s: failed to register CGU Clocks\n", __func__);

 	ingenic_cgu_register_syscore_ops(cgu);
 }

 /* We only probe via devicetree, no need for a platform driver */
 CLK_OF_DECLARE_DRIVER(jz4760_cgu, "ingenic,jz4760-cgu", jz4760_cgu_init);

 /* JZ4760B has some small differences, but we don't implement them. */
 CLK_OF_DECLARE_DRIVER(jz4760b_cgu, "ingenic,jz4760b-cgu", jz4760_cgu_init);
	// SPDX-License-Identifier: GPL-2.0
	/*
	* JZ4760 SoC CGU driver
	* Copyright 2018, Paul Cercueil <paul@crapouillou.net>
	*/

	#include <linux/bitops.h>
	#include <linux/clk-provider.h>
	#include <linux/delay.h>
	#include <linux/io.h>
	#include <linux/of.h>

	#include <linux/clk.h>

	#include <dt-bindings/clock/ingenic,jz4760-cgu.h>

	#include "cgu.h"
	#include "pm.h"

	#define MHZ (1000 * 1000)

	/*
	* CPM registers offset address definition
	*/
	#define CGU_REG_CPCCR 0x00
	#define CGU_REG_LCR 0x04
	#define CGU_REG_CPPCR0 0x10
	#define CGU_REG_CLKGR0 0x20
	#define CGU_REG_OPCR 0x24
	#define CGU_REG_CLKGR1 0x28
	#define CGU_REG_CPPCR1 0x30
	#define CGU_REG_USBPCR 0x3c
	#define CGU_REG_USBCDR 0x50
	#define CGU_REG_I2SCDR 0x60
	#define CGU_REG_LPCDR 0x64
	#define CGU_REG_MSCCDR 0x68
	#define CGU_REG_UHCCDR 0x6c
	#define CGU_REG_SSICDR 0x74
	#define CGU_REG_CIMCDR 0x7c
	#define CGU_REG_GPSCDR 0x80
	#define CGU_REG_PCMCDR 0x84
	#define CGU_REG_GPUCDR 0x88

	static const s8 pll_od_encoding[8] = {
	0x0, 0x1, -1, 0x2, -1, -1, -1, 0x3,
	};

	static const u8 jz4760_cgu_cpccr_div_table[] = {
	1, 2, 3, 4, 6, 8,
	};

	static const u8 jz4760_cgu_pll_half_div_table[] = {
	2, 1,
	};

	static void
	jz4760_cgu_calc_m_n_od(const struct ingenic_cgu_pll_info *pll_info,
	unsigned long rate, unsigned long parent_rate,
	unsigned int pm, unsigned int pn, unsigned int *pod)
	{
	unsigned int m, n, od, m_max = (1 << pll_info->m_bits) - 2;

	/* The frequency after the N divider must be between 1 and 50 MHz. */
	n = parent_rate / (1 * MHZ);

	/* The N divider must be >= 2. */
	n = clamp_val(n, 2, 1 << pll_info->n_bits);

	for (;; n >>= 1) {
	od = (unsigned int)-1;

	do {
	m = (rate / MHZ) * (1 << ++od) * n / (parent_rate / MHZ);
	} while ((m > m_max \|\| m & 1) && (od < 4));

	if (od < 4 && m >= 4 && m <= m_max)
	break;
	}

	*pm = m;
	*pn = n;
	*pod = 1 << od;
	}

	static const struct ingenic_cgu_clk_info jz4760_cgu_clocks[] = {

	/* External clocks */

	[JZ4760_CLK_EXT] = { "ext", CGU_CLK_EXT },
	[JZ4760_CLK_OSC32K] = { "osc32k", CGU_CLK_EXT },

	/* PLLs */

	[JZ4760_CLK_PLL0] = {
	"pll0", CGU_CLK_PLL,
	.parents = { JZ4760_CLK_EXT },
	.pll = {
	.reg = CGU_REG_CPPCR0,
	.rate_multiplier = 1,
	.m_shift = 23,
	.m_bits = 8,
	.m_offset = 0,
	.n_shift = 18,
	.n_bits = 4,
	.n_offset = 0,
	.od_shift = 16,
	.od_bits = 2,
	.od_max = 8,
	.od_encoding = pll_od_encoding,
	.bypass_reg = CGU_REG_CPPCR0,
	.bypass_bit = 9,
	.enable_bit = 8,
	.stable_bit = 10,
	.calc_m_n_od = jz4760_cgu_calc_m_n_od,
	},
	},

	[JZ4760_CLK_PLL1] = {
	/* TODO: PLL1 can depend on PLL0 */
	"pll1", CGU_CLK_PLL,
	.parents = { JZ4760_CLK_EXT },
	.pll = {
	.reg = CGU_REG_CPPCR1,
	.rate_multiplier = 1,
	.m_shift = 23,
	.m_bits = 8,
	.m_offset = 0,
	.n_shift = 18,
	.n_bits = 4,
	.n_offset = 0,
	.od_shift = 16,
	.od_bits = 2,
	.od_max = 8,
	.od_encoding = pll_od_encoding,
	.bypass_bit = -1,
	.enable_bit = 7,
	.stable_bit = 6,
	.calc_m_n_od = jz4760_cgu_calc_m_n_od,
	},
	},

	/* Main clocks */

	[JZ4760_CLK_CCLK] = {
	"cclk", CGU_CLK_DIV,
	/*
	* Disabling the CPU clock or any parent clocks will hang the
	* system; mark it critical.
	*/
	.flags = CLK_IS_CRITICAL,
	.parents = { JZ4760_CLK_PLL0, },
	.div = {
	CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1, 0,
	jz4760_cgu_cpccr_div_table,
	},
	},
	[JZ4760_CLK_HCLK] = {
	"hclk", CGU_CLK_DIV,
	.parents = { JZ4760_CLK_PLL0, },
	.div = {
	CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1, 0,
	jz4760_cgu_cpccr_div_table,
	},
	},
	[JZ4760_CLK_SCLK] = {
	"sclk", CGU_CLK_DIV,
	.parents = { JZ4760_CLK_PLL0, },
	.div = {
	CGU_REG_CPCCR, 24, 1, 4, 22, -1, -1, 0,
	jz4760_cgu_cpccr_div_table,
	},
	},
	[JZ4760_CLK_H2CLK] = {
	"h2clk", CGU_CLK_DIV,
	.parents = { JZ4760_CLK_PLL0, },
	.div = {
	CGU_REG_CPCCR, 16, 1, 4, 22, -1, -1, 0,
	jz4760_cgu_cpccr_div_table,
	},
	},
	[JZ4760_CLK_MCLK] = {
	"mclk", CGU_CLK_DIV,
	/*
	* Disabling MCLK or its parents will render DRAM
	* inaccessible; mark it critical.
	*/
	.flags = CLK_IS_CRITICAL,
	.parents = { JZ4760_CLK_PLL0, },
	.div = {
	CGU_REG_CPCCR, 12, 1, 4, 22, -1, -1, 0,
	jz4760_cgu_cpccr_div_table,
	},
	},
	[JZ4760_CLK_PCLK] = {
	"pclk", CGU_CLK_DIV,
	.parents = { JZ4760_CLK_PLL0, },
	.div = {
	CGU_REG_CPCCR, 8, 1, 4, 22, -1, -1, 0,
	jz4760_cgu_cpccr_div_table,
	},
	},

	/* Divided clocks */

	[JZ4760_CLK_PLL0_HALF] = {
	"pll0_half", CGU_CLK_DIV,
	.parents = { JZ4760_CLK_PLL0 },
	.div = {
	CGU_REG_CPCCR, 21, 1, 1, 22, -1, -1, 0,
	jz4760_cgu_pll_half_div_table,
	},
	},

	/* Those divided clocks can connect to PLL0 or PLL1 */

	[JZ4760_CLK_UHC] = {
	"uhc", CGU_CLK_DIV \| CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
	.mux = { CGU_REG_UHCCDR, 31, 1 },
	.div = { CGU_REG_UHCCDR, 0, 1, 4, -1, -1, -1 },
	.gate = { CGU_REG_CLKGR0, 24 },
	},
	[JZ4760_CLK_GPU] = {
	"gpu", CGU_CLK_DIV \| CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
	.mux = { CGU_REG_GPUCDR, 31, 1 },
	.div = { CGU_REG_GPUCDR, 0, 1, 3, -1, -1, -1 },
	.gate = { CGU_REG_CLKGR1, 9 },
	},
	[JZ4760_CLK_LPCLK_DIV] = {
	"lpclk_div", CGU_CLK_DIV \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
	.mux = { CGU_REG_LPCDR, 29, 1 },
	.div = { CGU_REG_LPCDR, 0, 1, 11, -1, -1, -1 },
	},
	[JZ4760_CLK_TVE] = {
	"tve", CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_LPCLK_DIV, JZ4760_CLK_EXT, },
	.mux = { CGU_REG_LPCDR, 31, 1 },
	.gate = { CGU_REG_CLKGR0, 27 },
	},
	[JZ4760_CLK_LPCLK] = {
	"lpclk", CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_LPCLK_DIV, JZ4760_CLK_TVE, },
	.mux = { CGU_REG_LPCDR, 30, 1 },
	.gate = { CGU_REG_CLKGR0, 28 },
	},
	[JZ4760_CLK_GPS] = {
	"gps", CGU_CLK_DIV \| CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1, },
	.mux = { CGU_REG_GPSCDR, 31, 1 },
	.div = { CGU_REG_GPSCDR, 0, 1, 4, -1, -1, -1 },
	.gate = { CGU_REG_CLKGR0, 22 },
	},

	/* Those divided clocks can connect to EXT, PLL0 or PLL1 */

	[JZ4760_CLK_PCM] = {
	"pcm", CGU_CLK_DIV \| CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_EXT, -1,
	JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1 },
	.mux = { CGU_REG_PCMCDR, 30, 2 },
	.div = { CGU_REG_PCMCDR, 0, 1, 9, -1, -1, -1, BIT(0) },
	.gate = { CGU_REG_CLKGR1, 8 },
	},
	[JZ4760_CLK_I2S] = {
	"i2s", CGU_CLK_DIV \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_EXT, -1,
	JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1 },
	.mux = { CGU_REG_I2SCDR, 30, 2 },
	.div = { CGU_REG_I2SCDR, 0, 1, 9, -1, -1, -1, BIT(0) },
	},
	[JZ4760_CLK_OTG] = {
	"usb", CGU_CLK_DIV \| CGU_CLK_GATE \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_EXT, -1,
	JZ4760_CLK_PLL0_HALF, JZ4760_CLK_PLL1 },
	.mux = { CGU_REG_USBCDR, 30, 2 },
	.div = { CGU_REG_USBCDR, 0, 1, 8, -1, -1, -1 },
	.gate = { CGU_REG_CLKGR0, 2 },
	},

	/* Those divided clocks can connect to EXT or PLL0 */
	[JZ4760_CLK_MMC_MUX] = {
	"mmc_mux", CGU_CLK_MUX \| CGU_CLK_DIV,
	.parents = { JZ4760_CLK_EXT, JZ4760_CLK_PLL0_HALF, },
	.mux = { CGU_REG_MSCCDR, 31, 1 },
	.div = { CGU_REG_MSCCDR, 0, 1, 6, -1, -1, -1, BIT(0) },
	},
	[JZ4760_CLK_SSI_MUX] = {
	"ssi_mux", CGU_CLK_DIV \| CGU_CLK_MUX,
	.parents = { JZ4760_CLK_EXT, JZ4760_CLK_PLL0_HALF, },
	.mux = { CGU_REG_SSICDR, 31, 1 },
	.div = { CGU_REG_SSICDR, 0, 1, 6, -1, -1, -1, BIT(0) },
	},

	/* These divided clock can connect to PLL0 only */
	[JZ4760_CLK_CIM] = {
	"cim", CGU_CLK_DIV \| CGU_CLK_GATE,
	.parents = { JZ4760_CLK_PLL0_HALF },
	.div = { CGU_REG_CIMCDR, 0, 1, 8, -1, -1, -1 },
	.gate = { CGU_REG_CLKGR0, 26 },
	},

	/* Gate-only clocks */

	[JZ4760_CLK_SSI0] = {
	"ssi0", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_SSI_MUX, },
	.gate = { CGU_REG_CLKGR0, 4 },
	},
	[JZ4760_CLK_SSI1] = {
	"ssi1", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_SSI_MUX, },
	.gate = { CGU_REG_CLKGR0, 19 },
	},
	[JZ4760_CLK_SSI2] = {
	"ssi2", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_SSI_MUX, },
	.gate = { CGU_REG_CLKGR0, 20 },
	},
	[JZ4760_CLK_DMA] = {
	"dma", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_H2CLK, },
	.gate = { CGU_REG_CLKGR0, 21 },
	},
	[JZ4760_CLK_MDMA] = {
	"mdma", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_HCLK, },
	.gate = { CGU_REG_CLKGR0, 25 },
	},
	[JZ4760_CLK_BDMA] = {
	"bdma", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_HCLK, },
	.gate = { CGU_REG_CLKGR1, 0 },
	},
	[JZ4760_CLK_I2C0] = {
	"i2c0", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 5 },
	},
	[JZ4760_CLK_I2C1] = {
	"i2c1", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 6 },
	},
	[JZ4760_CLK_UART0] = {
	"uart0", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 15 },
	},
	[JZ4760_CLK_UART1] = {
	"uart1", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 16 },
	},
	[JZ4760_CLK_UART2] = {
	"uart2", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 17 },
	},
	[JZ4760_CLK_UART3] = {
	"uart3", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 18 },
	},
	[JZ4760_CLK_IPU] = {
	"ipu", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_HCLK, },
	.gate = { CGU_REG_CLKGR0, 29 },
	},
	[JZ4760_CLK_ADC] = {
	"adc", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 14 },
	},
	[JZ4760_CLK_AIC] = {
	"aic", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_EXT, },
	.gate = { CGU_REG_CLKGR0, 8 },
	},
	[JZ4760_CLK_VPU] = {
	"vpu", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_HCLK, },
	.gate = { CGU_REG_LCR, 30, false, 150 },
	},
	[JZ4760_CLK_MMC0] = {
	"mmc0", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_MMC_MUX, },
	.gate = { CGU_REG_CLKGR0, 3 },
	},
	[JZ4760_CLK_MMC1] = {
	"mmc1", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_MMC_MUX, },
	.gate = { CGU_REG_CLKGR0, 11 },
	},
	[JZ4760_CLK_MMC2] = {
	"mmc2", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_MMC_MUX, },
	.gate = { CGU_REG_CLKGR0, 12 },
	},
	[JZ4760_CLK_UHC_PHY] = {
	"uhc_phy", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_UHC, },
	.gate = { CGU_REG_OPCR, 5 },
	},
	[JZ4760_CLK_OTG_PHY] = {
	"usb_phy", CGU_CLK_GATE,
	.parents = { JZ4760_CLK_OTG },
	.gate = { CGU_REG_OPCR, 7, true, 50 },
	},

	/* Custom clocks */
	[JZ4760_CLK_EXT512] = {
	"ext/512", CGU_CLK_FIXDIV,
	.parents = { JZ4760_CLK_EXT },
	.fixdiv = { 512 },
	},
	[JZ4760_CLK_RTC] = {
	"rtc", CGU_CLK_MUX,
	.parents = { JZ4760_CLK_EXT512, JZ4760_CLK_OSC32K, },
	.mux = { CGU_REG_OPCR, 2, 1},
	},
	};

	static void __init jz4760_cgu_init(struct device_node *np)
	{
	struct ingenic_cgu *cgu;
	int retval;

	cgu = ingenic_cgu_new(jz4760_cgu_clocks,
	ARRAY_SIZE(jz4760_cgu_clocks), np);
	if (!cgu) {
	pr_err("%s: failed to initialise CGU\n", __func__);
	return;
	}

	retval = ingenic_cgu_register_clocks(cgu);
	if (retval)
	pr_err("%s: failed to register CGU Clocks\n", __func__);

	ingenic_cgu_register_syscore_ops(cgu);
	}

	/* We only probe via devicetree, no need for a platform driver */
	CLK_OF_DECLARE_DRIVER(jz4760_cgu, "ingenic,jz4760-cgu", jz4760_cgu_init);

	/* JZ4760B has some small differences, but we don't implement them. */
	CLK_OF_DECLARE_DRIVER(jz4760b_cgu, "ingenic,jz4760b-cgu", jz4760_cgu_init);