clk.h
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/*
* Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _LPC32XX_CLK_H
#define _LPC32XX_CLK_H
#include <asm/types.h>
#define OSC_CLK_FREQUENCY 13000000
#define RTC_CLK_FREQUENCY 32768
/* Clocking and Power Control Registers */
struct clk_pm_regs {
u32 reserved0[5];
u32 boot_map; /* Boot Map Control Register */
u32 p0_intr_er; /* Port 0/1 Start and Interrupt Enable */
u32 usbdiv_ctrl; /* USB Clock Pre-Divide Register */
/* Internal Start Signal Sources Registers */
u32 start_er_int; /* Start Enable Register */
u32 start_rsr_int; /* Start Raw Status Register */
u32 start_sr_int; /* Start Status Register */
u32 start_apr_int; /* Start Activation Polarity Register */
/* Device Pin Start Signal Sources Registers */
u32 start_er_pin; /* Start Enable Register */
u32 start_rsr_pin; /* Start Raw Status Register */
u32 start_sr_pin; /* Start Status Register */
u32 start_apr_pin; /* Start Activation Polarity Register */
/* Clock Control Registers */
u32 hclkdiv_ctrl; /* HCLK Divider Control Register */
u32 pwr_ctrl; /* Power Control Register */
u32 pll397_ctrl; /* PLL397 Control Register */
u32 osc_ctrl; /* Main Oscillator Control Register */
u32 sysclk_ctrl; /* SYSCLK Control Register */
u32 lcdclk_ctrl; /* LCD Clock Control Register */
u32 hclkpll_ctrl; /* HCLK PLL Control Register */
u32 reserved1;
u32 adclk_ctrl1; /* ADC Clock Control1 Register */
u32 usb_ctrl; /* USB Control Register */
u32 sdramclk_ctrl; /* SDRAM Clock Control Register */
u32 ddr_lap_nom; /* DDR Calibration Nominal Value */
u32 ddr_lap_count; /* DDR Calibration Measured Value */
u32 ddr_cal_delay; /* DDR Calibration Delay Value */
u32 ssp_ctrl; /* SSP Control Register */
u32 i2s_ctrl; /* I2S Clock Control Register */
u32 ms_ctrl; /* Memory Card Control Register */
u32 reserved2[3];
u32 macclk_ctrl; /* Ethernet MAC Clock Control Register */
u32 reserved3[4];
u32 test_clk; /* Test Clock Selection Register */
u32 sw_int; /* Software Interrupt Register */
u32 i2cclk_ctrl; /* I2C Clock Control Register */
u32 keyclk_ctrl; /* Keyboard Scan Clock Control Register */
u32 adclk_ctrl; /* ADC Clock Control Register */
u32 pwmclk_ctrl; /* PWM Clock Control Register */
u32 timclk_ctrl; /* Watchdog and Highspeed Timer Control */
u32 timclk_ctrl1; /* Motor and Timer Clock Control */
u32 spi_ctrl; /* SPI Control Register */
u32 flashclk_ctrl; /* NAND Flash Clock Control Register */
u32 reserved4;
u32 u3clk; /* UART 3 Clock Control Register */
u32 u4clk; /* UART 4 Clock Control Register */
u32 u5clk; /* UART 5 Clock Control Register */
u32 u6clk; /* UART 6 Clock Control Register */
u32 irdaclk; /* IrDA Clock Control Register */
u32 uartclk_ctrl; /* UART Clock Control Register */
u32 dmaclk_ctrl; /* DMA Clock Control Register */
u32 autoclk_ctrl; /* Autoclock Control Register */
};
/* HCLK Divider Control Register bits */
#define CLK_HCLK_DDRAM_HALF (0x2 << 7)
#define CLK_HCLK_DDRAM_NOMINAL (0x1 << 7)
#define CLK_HCLK_DDRAM_STOPPED (0x0 << 7)
#define CLK_HCLK_PERIPH_DIV_MASK (0x1F << 2)
#define CLK_HCLK_PERIPH_DIV(n) ((((n) - 1) & 0x1F) << 2)
#define CLK_HCLK_ARM_PLL_DIV_MASK (0x3 << 0)
#define CLK_HCLK_ARM_PLL_DIV_4 (0x2 << 0)
#define CLK_HCLK_ARM_PLL_DIV_2 (0x1 << 0)
#define CLK_HCLK_ARM_PLL_DIV_1 (0x0 << 0)
/* Power Control Register bits */
#define CLK_PWR_HCLK_RUN_PERIPH (1 << 10)
#define CLK_PWR_EMC_SREFREQ (1 << 9)
#define CLK_PWR_EMC_SREFREQ_UPDATE (1 << 8)
#define CLK_PWR_SDRAM_SREFREQ (1 << 7)
#define CLK_PWR_HIGHCORE_LEVEL (1 << 5)
#define CLK_PWR_SYSCLKEN_LEVEL (1 << 4)
#define CLK_PWR_SYSCLKEN_CTRL (1 << 3)
#define CLK_PWR_NORMAL_RUN (1 << 2)
#define CLK_PWR_HIGHCORE_CTRL (1 << 1)
#define CLK_PWR_STOP_MODE (1 << 0)
/* SYSCLK Control Register bits */
#define CLK_SYSCLK_PLL397 (1 << 1)
#define CLK_SYSCLK_MUX (1 << 0)
/* HCLK PLL Control Register bits */
#define CLK_HCLK_PLL_OPERATING (1 << 16)
#define CLK_HCLK_PLL_BYPASS (1 << 15)
#define CLK_HCLK_PLL_DIRECT (1 << 14)
#define CLK_HCLK_PLL_FEEDBACK (1 << 13)
#define CLK_HCLK_PLL_POSTDIV_MASK (0x3 << 11)
#define CLK_HCLK_PLL_POSTDIV_16 (0x3 << 11)
#define CLK_HCLK_PLL_POSTDIV_8 (0x2 << 11)
#define CLK_HCLK_PLL_POSTDIV_4 (0x1 << 11)
#define CLK_HCLK_PLL_POSTDIV_2 (0x0 << 11)
#define CLK_HCLK_PLL_PREDIV_MASK (0x3 << 9)
#define CLK_HCLK_PLL_PREDIV_4 (0x3 << 9)
#define CLK_HCLK_PLL_PREDIV_3 (0x2 << 9)
#define CLK_HCLK_PLL_PREDIV_2 (0x1 << 9)
#define CLK_HCLK_PLL_PREDIV_1 (0x0 << 9)
#define CLK_HCLK_PLL_FEEDBACK_DIV_MASK (0xFF << 1)
#define CLK_HCLK_PLL_FEEDBACK_DIV(n) ((((n) - 1) & 0xFF) << 1)
#define CLK_HCLK_PLL_LOCKED (1 << 0)
/* Ethernet MAC Clock Control Register bits */
#define CLK_MAC_RMII (0x3 << 3)
#define CLK_MAC_MII (0x1 << 3)
#define CLK_MAC_MASTER (1 << 2)
#define CLK_MAC_SLAVE (1 << 1)
#define CLK_MAC_REG (1 << 0)
/* I2C Clock Control Register bits */
#define CLK_I2C2_ENABLE (1 << 1)
#define CLK_I2C1_ENABLE (1 << 0)
/* Timer Clock Control1 Register bits */
#define CLK_TIMCLK_MOTOR (1 << 6)
#define CLK_TIMCLK_TIMER3 (1 << 5)
#define CLK_TIMCLK_TIMER2 (1 << 4)
#define CLK_TIMCLK_TIMER1 (1 << 3)
#define CLK_TIMCLK_TIMER0 (1 << 2)
#define CLK_TIMCLK_TIMER5 (1 << 1)
#define CLK_TIMCLK_TIMER4 (1 << 0)
/* Timer Clock Control Register bits */
#define CLK_TIMCLK_HSTIMER (1 << 1)
#define CLK_TIMCLK_WATCHDOG (1 << 0)
/* UART Clock Control Register bits */
#define CLK_UART(n) (1 << ((n) - 3))
/* UARTn Clock Select Registers bits */
#define CLK_UART_HCLK (1 << 16)
#define CLK_UART_X_DIV(n) (((n) & 0xFF) << 8)
#define CLK_UART_Y_DIV(n) (((n) & 0xFF) << 0)
/* DMA Clock Control Register bits */
#define CLK_DMA_ENABLE (1 << 0)
/* NAND Clock Control Register bits */
#define CLK_NAND_MLC (1 << 1)
#define CLK_NAND_MLC_INT (1 << 5)
/* SSP Clock Control Register bits */
#define CLK_SSP0_ENABLE_CLOCK (1 << 0)
unsigned int get_sys_clk_rate(void);
unsigned int get_hclk_pll_rate(void);
unsigned int get_hclk_clk_div(void);
unsigned int get_hclk_clk_rate(void);
unsigned int get_periph_clk_div(void);
unsigned int get_periph_clk_rate(void);
#endif /* _LPC32XX_CLK_H */