/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright © 2011 by Amaury Pouly * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #ifndef CLKCTRL_IMX233_H #define CLKCTRL_IMX233_H #include "config.h" #include "system.h" #include "cpu.h" #define HW_CLKCTRL_BASE 0x80040000 #define HW_CLKCTRL_PLLCTRL0 (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x0)) #define HW_CLKCTRL_PLLCTRL0__POWER (1 << 16) #define HW_CLKCTRL_PLLCTRL0__EN_USB_CLKS (1 << 18) #define HW_CLKCTRL_PLLCTRL0__DIV_SEL_BP 20 #define HW_CLKCTRL_PLLCTRL0__DIV_SEL_BM (3 << 20) #define HW_CLKCTRL_PLLCTRL1 (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x10)) #define HW_CLKCTRL_CPU (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x20)) #define HW_CLKCTRL_CPU__DIV_CPU_BP 0 #define HW_CLKCTRL_CPU__DIV_CPU_BM 0x3f #define HW_CLKCTRL_CPU__INTERRUPT_WAIT (1 << 12) #define HW_CLKCTRL_CPU__DIV_XTAL_BP 16 #define HW_CLKCTRL_CPU__DIV_XTAL_BM (0x3ff << 16) #define HW_CLKCTRL_CPU__DIV_XTAL_FRAC_EN (1 << 26) #define HW_CLKCTRL_CPU__BUSY_REF_CPU (1 << 28) #define HW_CLKCTRL_HBUS (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x30)) #define HW_CLKCTRL_HBUS__DIV_BP 0 #define HW_CLKCTRL_HBUS__DIV_BM 0x1f #define HW_CLKCTRL_HBUS__DIV_FRAC_EN (1 << 5) #define HW_CLKCTRL_HBUS__SLOW_DIV_BP 16 #define HW_CLKCTRL_HBUS__SLOW_DIV_BM (0x7 << 16) #define HW_CLKCTRL_HBUS__AUTO_SLOW_MODE (1 << 20) /* warning: this register doesn't have a CLR/SET variant ! */ #define HW_CLKCTRL_XBUS (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x40)) #define HW_CLKCTRL_XBUS__DIV_BP 0 #define HW_CLKCTRL_XBUS__DIV_BM 0x3ff #define HW_CLKCTRL_XBUS__BUSY (1 << 31) #define HW_CLKCTRL_XTAL (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x50)) #define HW_CLKCTRL_XTAL__TIMROT_CLK32K_GATE (1 << 26) #define HW_CLKCTRL_XTAL__DRI_CLK24M_GATE (1 << 28) #define HW_CLKCTRL_XTAL__FILT_CLK24M_GATE (1 << 30) /* warning: this register doesn't have a CLR/SET variant ! */ #define HW_CLKCTRL_PIX (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x60)) #define HW_CLKCTRL_PIX__DIV_BP 0 #define HW_CLKCTRL_PIX__DIV_BM 0xfff /* warning: this register doesn't have a CLR/SET variant ! */ #define HW_CLKCTRL_SSP (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x70)) #define HW_CLKCTRL_SSP__DIV_BP 0 #define HW_CLKCTRL_SSP__DIV_BM 0x1ff /* warning: this register doesn't have a CLR/SET variant ! */ #define HW_CLKCTRL_EMI (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0xa0)) #define HW_CLKCTRL_EMI__DIV_EMI_BP 0 #define HW_CLKCTRL_EMI__DIV_EMI_BM 0x3f #define HW_CLKCTRL_EMI__DIV_XTAL_BP 8 #define HW_CLKCTRL_EMI__DIV_XTAL_BM (0xf << 8) #define HW_CLKCTRL_EMI__BUSY_REF_EMI (1 << 28) #define HW_CLKCTRL_EMI__SYNC_MODE_EN (1 << 30) #define HW_CLKCTRL_EMI__CLKGATE (1 << 31) #define HW_CLKCTRL_CLKSEQ (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x110)) #define HW_CLKCTRL_CLKSEQ__BYPASS_PIX (1 << 1) #define HW_CLKCTRL_CLKSEQ__BYPASS_SSP (1 << 5) #define HW_CLKCTRL_CLKSEQ__BYPASS_EMI (1 << 6) #define HW_CLKCTRL_CLKSEQ__BYPASS_CPU (1 << 7) #define HW_CLKCTRL_FRAC (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0xf0)) #define HW_CLKCTRL_FRAC_CPU (*(volatile uint8_t *)(HW_CLKCTRL_BASE + 0xf0)) #define HW_CLKCTRL_FRAC_EMI (*(volatile uint8_t *)(HW_CLKCTRL_BASE + 0xf1)) #define HW_CLKCTRL_FRAC_PIX (*(volatile uint8_t *)(HW_CLKCTRL_BASE + 0xf2)) #define HW_CLKCTRL_FRAC_IO (*(volatile uint8_t *)(HW_CLKCTRL_BASE + 0xf3)) #define HW_CLKCTRL_FRAC_XX__XXDIV_BM 0x3f #define HW_CLKCTRL_FRAC_XX__XX_STABLE (1 << 6) #define HW_CLKCTRL_FRAC_XX__CLKGATEXX (1 << 7) /* warning: this register doesn't have a CLR/SET variant ! */ #define HW_CLKCTRL_RESET (*(volatile uint32_t *)(HW_CLKCTRL_BASE + 0x120)) #define HW_CLKCTRL_RESET_CHIP 0x2 #define HW_CLKCTRL_RESET_DIG 0x1 static inline void core_sleep(void) { __REG_SET(HW_CLKCTRL_CPU) = HW_CLKCTRL_CPU__INTERRUPT_WAIT; asm volatile ( "mcr p15, 0, %0, c7, c0, 4 \n" /* Wait for interrupt */ "nop\n" /* Datasheet unclear: "The lr sent to handler points here after RTI"*/ : : "r"(0) ); enable_irq(); } enum imx233_clock_t { CLK_PIX, /* freq, div, frac, bypass, enable */ CLK_SSP, /* freq, div, bypass, enable */ CLK_IO, /* freq, frac */ CLK_CPU, /* freq, div, frac, bypass */ CLK_HBUS, /* freq, div, frac */ CLK_PLL, /* freq */ CLK_XTAL, /* freq */ CLK_EMI, /* freq */ CLK_XBUS, /* freq, div */ }; enum imx233_xtal_clk_t { XTAL_FILT = 1 << 30, XTAL_DRI = 1 << 28, XTAL_TIMROT = 1 << 26, }; /* Auto-Slow monitoring */ enum imx233_as_monitor_t { AS_CPU_INSTR = 1 << 21, /* Monitor CPU instruction access to AHB */ AS_CPU_DATA = 1 << 22, /* Monitor CPU data access to AHB */ AS_TRAFFIC = 1 << 23, /* Monitor AHB master activity */ AS_TRAFFIC_JAM = 1 << 24, /* Monitor AHB masters (>=3) activity */ AS_APBXDMA = 1 << 25, /* Monitor APBX DMA activity */ AS_APBHDMA = 1 << 26, /* Monitor APBH DMA activity */ AS_PXP = 1 << 27, /* Monitor PXP activity */ AS_DCP = 1 << 28, /* Monitor DCP activity */ }; enum imx233_as_div_t { AS_DIV_1 = 0, AS_DIV_2 = 1, AS_DIV_4 = 2, AS_DIV_8 = 3, AS_DIV_16 = 4, AS_DIV_32 = 5 }; /* can use a mask of clocks */ void imx233_enable_xtal_clock(enum imx233_xtal_clk_t xtal_clk, bool enable); bool imx233_is_xtal_clock_enable(enum imx233_xtal_clk_t clk); /* only use it for non-fractional clocks (ie not for IO) */ void imx233_enable_clock(enum imx233_clock_t clk, bool enable); bool imx233_is_clock_enable(enum imx233_clock_t cl); void imx233_set_clock_divisor(enum imx233_clock_t clk, int div); int imx233_get_clock_divisor(enum imx233_clock_t clk); /* call with fracdiv=0 to disable it */ void imx233_set_fractional_divisor(enum imx233_clock_t clk, int fracdiv); /* 0 means fractional dividor disable */ int imx233_get_fractional_divisor(enum imx233_clock_t clk); void imx233_set_bypass_pll(enum imx233_clock_t clk, bool bypass); bool imx233_get_bypass_pll(enum imx233_clock_t clk); void imx233_enable_usb_pll(bool enable); bool imx233_is_usb_pll_enable(void); unsigned imx233_get_clock_freq(enum imx233_clock_t clk); void imx233_set_auto_slow_divisor(enum imx233_as_div_t div); enum imx233_as_div_t imx233_get_auto_slow_divisor(void); void imx233_enable_auto_slow(bool enable); bool imx233_is_auto_slow_enable(void); void imx233_enable_auto_slow_monitor(enum imx233_as_monitor_t monitor, bool enable); bool imx233_is_auto_slow_monitor_enable(enum imx233_as_monitor_t monitor); #endif /* CLKCTRL_IMX233_H */