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1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
4  */
5 
6 #ifndef _LPC32XX_CLK_H
7 #define _LPC32XX_CLK_H
8 
9 #include <asm/types.h>
10 
11 #define OSC_CLK_FREQUENCY	13000000
12 #define RTC_CLK_FREQUENCY	32768
13 
14 /* Clocking and Power Control Registers */
15 struct clk_pm_regs {
16 	u32 reserved0[5];
17 	u32 boot_map;		/* Boot Map Control Register		*/
18 	u32 p0_intr_er;		/* Port 0/1 Start and Interrupt Enable	*/
19 	u32 usbdiv_ctrl;	/* USB Clock Pre-Divide Register	*/
20 	/* Internal Start Signal Sources Registers	*/
21 	u32 start_er_int;	/* Start Enable Register		*/
22 	u32 start_rsr_int;	/* Start Raw Status Register		*/
23 	u32 start_sr_int;	/* Start Status Register		*/
24 	u32 start_apr_int;	/* Start Activation Polarity Register	*/
25 	/* Device Pin Start Signal Sources Registers	*/
26 	u32 start_er_pin;	/* Start Enable Register		*/
27 	u32 start_rsr_pin;	/* Start Raw Status Register		*/
28 	u32 start_sr_pin;	/* Start Status Register		*/
29 	u32 start_apr_pin;	/* Start Activation Polarity Register	*/
30 	/* Clock Control Registers			*/
31 	u32 hclkdiv_ctrl;	/* HCLK Divider Control Register	*/
32 	u32 pwr_ctrl;		/* Power Control Register		*/
33 	u32 pll397_ctrl;	/* PLL397 Control Register		*/
34 	u32 osc_ctrl;		/* Main Oscillator Control Register	*/
35 	u32 sysclk_ctrl;	/* SYSCLK Control Register		*/
36 	u32 lcdclk_ctrl;	/* LCD Clock Control Register		*/
37 	u32 hclkpll_ctrl;	/* HCLK PLL Control Register		*/
38 	u32 reserved1;
39 	u32 adclk_ctrl1;	/* ADC Clock Control1 Register		*/
40 	u32 usb_ctrl;		/* USB Control Register			*/
41 	u32 sdramclk_ctrl;	/* SDRAM Clock Control Register		*/
42 	u32 ddr_lap_nom;	/* DDR Calibration Nominal Value	*/
43 	u32 ddr_lap_count;	/* DDR Calibration Measured Value	*/
44 	u32 ddr_cal_delay;	/* DDR Calibration Delay Value		*/
45 	u32 ssp_ctrl;		/* SSP Control Register			*/
46 	u32 i2s_ctrl;		/* I2S Clock Control Register		*/
47 	u32 ms_ctrl;		/* Memory Card Control Register		*/
48 	u32 reserved2[3];
49 	u32 macclk_ctrl;	/* Ethernet MAC Clock Control Register	*/
50 	u32 reserved3[4];
51 	u32 test_clk;		/* Test Clock Selection Register	*/
52 	u32 sw_int;		/* Software Interrupt Register		*/
53 	u32 i2cclk_ctrl;	/* I2C Clock Control Register		*/
54 	u32 keyclk_ctrl;	/* Keyboard Scan Clock Control Register	*/
55 	u32 adclk_ctrl;		/* ADC Clock Control Register		*/
56 	u32 pwmclk_ctrl;	/* PWM Clock Control Register		*/
57 	u32 timclk_ctrl;	/* Watchdog and Highspeed Timer Control */
58 	u32 timclk_ctrl1;	/* Motor and Timer Clock Control	*/
59 	u32 spi_ctrl;		/* SPI Control Register			*/
60 	u32 flashclk_ctrl;	/* NAND Flash Clock Control Register	*/
61 	u32 reserved4;
62 	u32 u3clk;		/* UART 3 Clock Control Register	*/
63 	u32 u4clk;		/* UART 4 Clock Control Register	*/
64 	u32 u5clk;		/* UART 5 Clock Control Register	*/
65 	u32 u6clk;		/* UART 6 Clock Control Register	*/
66 	u32 irdaclk;		/* IrDA Clock Control Register		*/
67 	u32 uartclk_ctrl;	/* UART Clock Control Register		*/
68 	u32 dmaclk_ctrl;	/* DMA Clock Control Register		*/
69 	u32 autoclk_ctrl;	/* Autoclock Control Register		*/
70 };
71 
72 /* HCLK Divider Control Register bits */
73 #define CLK_HCLK_DDRAM_MASK		(0x3 << 7)
74 #define CLK_HCLK_DDRAM_HALF		(0x2 << 7)
75 #define CLK_HCLK_DDRAM_NOMINAL		(0x1 << 7)
76 #define CLK_HCLK_DDRAM_STOPPED		(0x0 << 7)
77 #define CLK_HCLK_PERIPH_DIV_MASK	(0x1F << 2)
78 #define CLK_HCLK_PERIPH_DIV(n)		((((n) - 1) & 0x1F) << 2)
79 #define CLK_HCLK_ARM_PLL_DIV_MASK	(0x3 << 0)
80 #define CLK_HCLK_ARM_PLL_DIV_4		(0x2 << 0)
81 #define CLK_HCLK_ARM_PLL_DIV_2		(0x1 << 0)
82 #define CLK_HCLK_ARM_PLL_DIV_1		(0x0 << 0)
83 
84 /* Power Control Register bits */
85 #define CLK_PWR_HCLK_RUN_PERIPH		(1 << 10)
86 #define CLK_PWR_EMC_SREFREQ		(1 << 9)
87 #define CLK_PWR_EMC_SREFREQ_UPDATE	(1 << 8)
88 #define CLK_PWR_SDRAM_SREFREQ		(1 << 7)
89 #define CLK_PWR_HIGHCORE_LEVEL		(1 << 5)
90 #define CLK_PWR_SYSCLKEN_LEVEL		(1 << 4)
91 #define CLK_PWR_SYSCLKEN_CTRL		(1 << 3)
92 #define CLK_PWR_NORMAL_RUN		(1 << 2)
93 #define CLK_PWR_HIGHCORE_CTRL		(1 << 1)
94 #define CLK_PWR_STOP_MODE		(1 << 0)
95 
96 /* SYSCLK Control Register bits */
97 #define CLK_SYSCLK_PLL397		(1 << 1)
98 #define CLK_SYSCLK_MUX			(1 << 0)
99 
100 /* HCLK PLL Control Register bits */
101 #define CLK_HCLK_PLL_OPERATING		(1 << 16)
102 #define CLK_HCLK_PLL_BYPASS		(1 << 15)
103 #define CLK_HCLK_PLL_DIRECT		(1 << 14)
104 #define CLK_HCLK_PLL_FEEDBACK		(1 << 13)
105 #define CLK_HCLK_PLL_POSTDIV_MASK	(0x3 << 11)
106 #define CLK_HCLK_PLL_POSTDIV_16		(0x3 << 11)
107 #define CLK_HCLK_PLL_POSTDIV_8		(0x2 << 11)
108 #define CLK_HCLK_PLL_POSTDIV_4		(0x1 << 11)
109 #define CLK_HCLK_PLL_POSTDIV_2		(0x0 << 11)
110 #define CLK_HCLK_PLL_PREDIV_MASK	(0x3 << 9)
111 #define CLK_HCLK_PLL_PREDIV_4		(0x3 << 9)
112 #define CLK_HCLK_PLL_PREDIV_3		(0x2 << 9)
113 #define CLK_HCLK_PLL_PREDIV_2		(0x1 << 9)
114 #define CLK_HCLK_PLL_PREDIV_1		(0x0 << 9)
115 #define CLK_HCLK_PLL_FEEDBACK_DIV_MASK	(0xFF << 1)
116 #define CLK_HCLK_PLL_FEEDBACK_DIV(n)	((((n) - 1) & 0xFF) << 1)
117 #define CLK_HCLK_PLL_LOCKED		(1 << 0)
118 
119 /* Ethernet MAC Clock Control Register bits	*/
120 #define CLK_MAC_RMII			(0x3 << 3)
121 #define CLK_MAC_MII			(0x1 << 3)
122 #define CLK_MAC_MASTER			(1 << 2)
123 #define CLK_MAC_SLAVE			(1 << 1)
124 #define CLK_MAC_REG			(1 << 0)
125 
126 /* I2C Clock Control Register bits	*/
127 #define CLK_I2C2_ENABLE			(1 << 1)
128 #define CLK_I2C1_ENABLE			(1 << 0)
129 
130 /* Timer Clock Control1 Register bits */
131 #define CLK_TIMCLK_MOTOR		(1 << 6)
132 #define CLK_TIMCLK_TIMER3		(1 << 5)
133 #define CLK_TIMCLK_TIMER2		(1 << 4)
134 #define CLK_TIMCLK_TIMER1		(1 << 3)
135 #define CLK_TIMCLK_TIMER0		(1 << 2)
136 #define CLK_TIMCLK_TIMER5		(1 << 1)
137 #define CLK_TIMCLK_TIMER4		(1 << 0)
138 
139 /* Timer Clock Control Register bits */
140 #define CLK_TIMCLK_HSTIMER		(1 << 1)
141 #define CLK_TIMCLK_WATCHDOG		(1 << 0)
142 
143 /* UART Clock Control Register bits */
144 #define CLK_UART(n)			(1 << ((n) - 3))
145 
146 /* UARTn Clock Select Registers bits */
147 #define CLK_UART_HCLK			(1 << 16)
148 #define CLK_UART_X_DIV(n)		(((n) & 0xFF) << 8)
149 #define CLK_UART_Y_DIV(n)		(((n) & 0xFF) << 0)
150 
151 /* DMA Clock Control Register bits */
152 #define CLK_DMA_ENABLE			(1 << 0)
153 
154 /* NAND Clock Control Register bits */
155 #define CLK_NAND_SLC			(1 << 0)
156 #define CLK_NAND_MLC			(1 << 1)
157 #define CLK_NAND_SLC_SELECT		(1 << 2)
158 #define CLK_NAND_MLC_INT		(1 << 5)
159 
160 /* SSP Clock Control Register bits */
161 #define CLK_SSP0_ENABLE_CLOCK		(1 << 0)
162 
163 /* SDRAMCLK register bits */
164 #define CLK_SDRAM_DDR_SEL		(1 << 1)
165 
166 /* USB control register definitions */
167 #define CLK_USBCTRL_PLL_STS		(1 << 0)
168 #define CLK_USBCTRL_FDBK_PLUS1(n)	(((n) & 0xFF) << 1)
169 #define CLK_USBCTRL_POSTDIV_2POW(n)	(((n) & 0x3) << 11)
170 #define CLK_USBCTRL_PLL_PWRUP		(1 << 16)
171 #define CLK_USBCTRL_CLK_EN1		(1 << 17)
172 #define CLK_USBCTRL_CLK_EN2		(1 << 18)
173 #define CLK_USBCTRL_BUS_KEEPER		(0x1 << 19)
174 #define CLK_USBCTRL_USBHSTND_EN		(1 << 21)
175 #define CLK_USBCTRL_USBDVND_EN		(1 << 22)
176 #define CLK_USBCTRL_HCLK_EN		(1 << 24)
177 
178 unsigned int get_sys_clk_rate(void);
179 unsigned int get_hclk_pll_rate(void);
180 unsigned int get_hclk_clk_div(void);
181 unsigned int get_hclk_clk_rate(void);
182 unsigned int get_periph_clk_div(void);
183 unsigned int get_periph_clk_rate(void);
184 unsigned int get_sdram_clk_rate(void);
185 
186 #endif /* _LPC32XX_CLK_H */
187