/* clock startup for Jellybean with Lemondrop attached Configure PLL1 to max speed (204MHz). Note: PLL1 clock is used by M4/M0 core, Peripheral, APB1. */ void cpu_clock_init(void) { /* use IRC as clock source for APB1 (including I2C0) */ CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_IRC); /* use IRC as clock source for APB3 */ CGU_BASE_APB3_CLK = CGU_BASE_APB3_CLK_CLK_SEL(CGU_SRC_IRC); //FIXME disable I2C /* Kick I2C0 down to 400kHz when we switch over to APB1 clock = 204MHz */ i2c1_init(255); /* * 12MHz clock is entering LPC XTAL1/OSC input now. On * Jellybean/Lemondrop, this is a signal from the clock generator. On * Jawbreaker, there is a 12 MHz crystal at the LPC. * Set up PLL1 to run from XTAL1 input. */ //FIXME a lot of the details here should be in a CGU driver /* set xtal oscillator to low frequency mode */ CGU_XTAL_OSC_CTRL &= ~CGU_XTAL_OSC_CTRL_HF_MASK; /* power on the oscillator and wait until stable */ CGU_XTAL_OSC_CTRL &= ~CGU_XTAL_OSC_CTRL_ENABLE_MASK; /* Wait about 100us after Crystal Power ON */ delay(WAIT_CPU_CLOCK_INIT_DELAY); /* use XTAL_OSC as clock source for BASE_M4_CLK (CPU) */ CGU_BASE_M4_CLK = (CGU_BASE_M4_CLK_CLK_SEL(CGU_SRC_XTAL) | CGU_BASE_M4_CLK_AUTOBLOCK(1)); /* use XTAL_OSC as clock source for APB1 */ CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_AUTOBLOCK(1) | CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_XTAL); /* use XTAL_OSC as clock source for APB3 */ CGU_BASE_APB3_CLK = CGU_BASE_APB3_CLK_AUTOBLOCK(1) | CGU_BASE_APB3_CLK_CLK_SEL(CGU_SRC_XTAL); cpu_clock_pll1_low_speed(); /* use PLL1 as clock source for BASE_M4_CLK (CPU) */ CGU_BASE_M4_CLK = (CGU_BASE_M4_CLK_CLK_SEL(CGU_SRC_PLL1) | CGU_BASE_M4_CLK_AUTOBLOCK(1)); /* use XTAL_OSC as clock source for PLL0USB */ CGU_PLL0USB_CTRL = CGU_PLL0USB_CTRL_PD(1) | CGU_PLL0USB_CTRL_AUTOBLOCK(1) | CGU_PLL0USB_CTRL_CLK_SEL(CGU_SRC_XTAL); while (CGU_PLL0USB_STAT & CGU_PLL0USB_STAT_LOCK_MASK); /* configure PLL0USB to produce 480 MHz clock from 12 MHz XTAL_OSC */ /* Values from User Manual v1.4 Table 94, for 12MHz oscillator. */ CGU_PLL0USB_MDIV = 0x06167FFA; CGU_PLL0USB_NP_DIV = 0x00302062; CGU_PLL0USB_CTRL |= (CGU_PLL0USB_CTRL_PD(1) | CGU_PLL0USB_CTRL_DIRECTI(1) | CGU_PLL0USB_CTRL_DIRECTO(1) | CGU_PLL0USB_CTRL_CLKEN(1)); /* power on PLL0USB and wait until stable */ CGU_PLL0USB_CTRL &= ~CGU_PLL0USB_CTRL_PD_MASK; while (!(CGU_PLL0USB_STAT & CGU_PLL0USB_STAT_LOCK_MASK)); /* use PLL0USB as clock source for USB0 */ CGU_BASE_USB0_CLK = CGU_BASE_USB0_CLK_AUTOBLOCK(1) | CGU_BASE_USB0_CLK_CLK_SEL(CGU_SRC_PLL0USB); /* Switch peripheral clock over to use PLL1 (204MHz) */ CGU_BASE_PERIPH_CLK = CGU_BASE_PERIPH_CLK_AUTOBLOCK(1) | CGU_BASE_PERIPH_CLK_CLK_SEL(CGU_SRC_PLL1); /* Switch APB1 clock over to use PLL1 (204MHz) */ CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_AUTOBLOCK(1) | CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_PLL1); /* Switch APB3 clock over to use PLL1 (204MHz) */ CGU_BASE_APB3_CLK = CGU_BASE_APB3_CLK_AUTOBLOCK(1) | CGU_BASE_APB3_CLK_CLK_SEL(CGU_SRC_PLL1); ///XXX: Disable ADCHS clock CGU_BASE_VADC_CLK = CGU_BASE_VADC_CLK_PD(1); CGU_PLL0AUDIO_CTRL = CGU_PLL0AUDIO_CTRL_PD(1) | CGU_PLL0AUDIO_CTRL_AUTOBLOCK(1) | CGU_PLL0AUDIO_CTRL_CLK_SEL(CGU_SRC_GP_CLKIN); while (CGU_PLL0AUDIO_STAT & CGU_PLL0AUDIO_STAT_LOCK_MASK); /* configure PLL0AUDIO to produce xxMHz */ /* PLL Register settings (SEL_EXT=1): Mdec=31=PLL0_MDIV[16:0] => CGU_PLL0AUDIO_MDIV Ndec=0=PLL0_NPDIV[21:12], Pdec=21=PLL0_NPDIV[6:0] => CGU_PLL0AUDIO_NP_DIV */ CGU_PLL0AUDIO_MDIV = 0; CGU_PLL0AUDIO_NP_DIV = 0; CGU_PLL0AUDIO_CTRL |= (CGU_PLL0AUDIO_CTRL_PD(1) | CGU_PLL0AUDIO_CTRL_SEL_EXT(1) | CGU_PLL1_CTRL_NSEL(0) | CGU_PLL1_CTRL_PSEL(0) | CGU_PLL0AUDIO_CTRL_CLKEN(1)); ///* power on PLL0AUDIO and wait until stable */ CGU_PLL0AUDIO_CTRL &= ~CGU_PLL0AUDIO_CTRL_PD(1); while (!(CGU_PLL0AUDIO_STAT & CGU_PLL0AUDIO_STAT_LOCK_MASK)); ///* use PLL0AUDIO as clock source for ADCHS */ CGU_BASE_VADC_CLK = CGU_BASE_VADC_CLK_AUTOBLOCK(1) | CGU_BASE_VADC_CLK_CLK_SEL(CGU_SRC_PLL0AUDIO); //For Clock debugging. Connects PLL0Audio to CLK0 output //CGU_BASE_OUT_CLK = CGU_BASE_OUT_CLK_CLK_SEL(CGU_SRC_PLL0AUDIO); /* ****************************************** */ /* Disable/PowerDown unused clock/peripherals */ /* ****************************************** */ CREG_CREG6 |= (1<<17); // PowerDown RNG // CGU_BASE_SAFE_CLK = CGU_BASE_USB1_CLK_PD(1); // CGU_BASE_USB0_CLK is used for USB0 HS // CGU_BASE_M0_CLK is used /* Switch off USB1 clock */ CGU_BASE_USB1_CLK = CGU_BASE_USB1_CLK_PD(1); // CGU_BASE_M4_CLK is used // CGU_BASE_SPIFI_CLK = CGU_BASE_SPIFI_CLK_PD(1); /* Switch off SPI clock */ CGU_BASE_SPI_CLK = CGU_BASE_SPI_CLK_PD(1); /* Switch off PHY RX & TX clock */ CGU_BASE_PHY_RX_CLK = CGU_BASE_PHY_RX_CLK_PD(1); CGU_BASE_PHY_TX_CLK = CGU_BASE_PHY_TX_CLK_PD(1); // CGU_BASE_APB1_CLK is used for I2C0 // CGU_BASE_APB3_CLK is used for I2C1 /* Switch off LCD clock */ CGU_BASE_LCD_CLK = CGU_BASE_LCD_CLK_PD(1); // CGU_BASE_ADCHS_CLK is used /* Switch off SDIO clock */ CGU_BASE_SDIO_CLK = CGU_BASE_SDIO_CLK_PD(1); // CGU_BASE_SSP0_CLK = CGU_BASE_SSP0_CLK_PD(1); /* Switch off SSP1 clock */ //CGU_BASE_SSP1_CLK = CGU_BASE_SSP1_CLK_PD(1); /* Switch off UART0 to 3 clock */ CGU_BASE_UART0_CLK = CGU_BASE_UART0_CLK_PD(1); CGU_BASE_UART1_CLK = CGU_BASE_UART1_CLK_PD(1); CGU_BASE_UART2_CLK = CGU_BASE_UART2_CLK_PD(1); CGU_BASE_UART3_CLK = CGU_BASE_UART3_CLK_PD(1); /* Switch off OUT clocks */ CGU_BASE_OUT_CLK = CGU_BASE_OUT_CLK_PD(1); /* Reserved/Undocumented clocks power down */ CGU_OUTCLK_21_CTRL = 1; CGU_OUTCLK_22_CTRL = 1; CGU_OUTCLK_23_CTRL = 1; CGU_OUTCLK_24_CTRL = 1; /* Switch off AUDIO clock */ //CGU_BASE_AUDIO_CLK = CGU_BASE_AUDIO_CLK_PD(1); CGU_BASE_CGU_OUT0_CLK = CGU_BASE_CGU_OUT0_CLK_PD(1); CGU_BASE_CGU_OUT1_CLK = CGU_BASE_CGU_OUT1_CLK_PD(1); /* Switch off IDIV C,D,E disabled */ CGU_IDIVC_CTRL = CGU_IDIVC_CTRL_PD(1); CGU_IDIVD_CTRL = CGU_IDIVD_CTRL_PD(1); CGU_IDIVE_CTRL = CGU_IDIVE_CTRL_PD(1); /* // Power down M4 branches, but not BUS, GPIO, CREG and M0 & M4 CORE clock */ //CCU1_CLK_M4_BUS_CFG &= ~(1); //CCU1_CLK_M4_SPIFI_CFG &= ~(1); //CCU1_CLK_M4_GPIO_CFG &= ~(1); CCU1_CLK_M4_LCD_CFG &= ~(1); CCU1_CLK_M4_ETHERNET_CFG &= ~(1); //CCU1_CLK_M4_USB0_CFG &= ~(1); CCU1_CLK_M4_EMC_CFG &= ~(1); CCU1_CLK_M4_SDIO_CFG &= ~(1); //CCU1_CLK_M4_DMA_CFG &= ~(1); //CCU1_CLK_M4_M4CORE_CFG &= ~(1); CCU1_CLK_M4_SCT_CFG &= ~(1); CCU1_CLK_M4_USB1_CFG &= ~(1); CCU1_CLK_M4_EMCDIV_CFG &= ~(1); //CCU1_CLK_M4_M0APP_CFG &= ~(1); //CCU1_CLK_M4_VADC_CFG &= ~(1); //CCU1_CLK_M4_WWDT_CFG &= ~(1); CCU1_CLK_M4_USART0_CFG &= ~(1); CCU1_CLK_M4_UART1_CFG &= ~(1); //CCU1_CLK_M4_SSP0_CFG &= ~(1); //CCU1_CLK_M4_SSP1_CFG &= ~(1); CCU1_CLK_M4_TIMER0_CFG &= ~(1); CCU1_CLK_M4_TIMER1_CFG &= ~(1); //CCU1_CLK_M4_SCU_CFG &= ~(1); //CCU1_CLK_M4_CREG_CFG &= ~(1); //CCU1_CLK_M4_RITIMER_CFG &= ~(1); CCU1_CLK_M4_USART2_CFG &= ~(1); CCU1_CLK_M4_USART3_CFG &= ~(1); CCU1_CLK_M4_TIMER2_CFG &= ~(1); CCU1_CLK_M4_TIMER3_CFG &= ~(1); CCU1_CLK_M4_QEI_CFG &= ~(1); //CCU1_CLK_PERIPH_SGPIO_CFG &= ~(1); }
/* clock startup for LPC4320 configure PLL1 to max speed (204MHz). Note: PLL1 clock is used by M4/M0 core, Peripheral, APB1. */ void cpu_clock_init(void) { /* use IRC as clock source for APB1 (including I2C0) */ CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_IRC); /* use IRC as clock source for APB3 */ CGU_BASE_APB3_CLK = CGU_BASE_APB3_CLK_CLK_SEL(CGU_SRC_IRC); i2c_bus_start(clock_gen.bus, &i2c_config_si5351c_slow_clock); si5351c_disable_all_outputs(&clock_gen); si5351c_disable_oeb_pin_control(&clock_gen); si5351c_power_down_all_clocks(&clock_gen); si5351c_set_crystal_configuration(&clock_gen); si5351c_enable_xo_and_ms_fanout(&clock_gen); si5351c_configure_pll_sources(&clock_gen); si5351c_configure_pll_multisynth(&clock_gen); /* * Clocks: * CLK0 -> MAX5864/CPLD * CLK1 -> CPLD * CLK2 -> SGPIO * CLK3 -> External Clock Output (power down at boot) * CLK4 -> RFFC5072 (MAX2837 on rad1o) * CLK5 -> MAX2837 (MAX2871 on rad1o) * CLK6 -> none * CLK7 -> LPC43xx (uses a 12MHz crystal by default) */ /* MS4/CLK4 is the source for the RFFC5071 mixer (MAX2837 on rad1o). */ si5351c_configure_multisynth(&clock_gen, 4, 20*128-512, 0, 1, 0); /* 800/20 = 40MHz */ /* MS5/CLK5 is the source for the MAX2837 clock input (MAX2871 on rad1o). */ si5351c_configure_multisynth(&clock_gen, 5, 20*128-512, 0, 1, 0); /* 800/20 = 40MHz */ /* MS6/CLK6 is unused. */ /* MS7/CLK7 is unused. */ /* Set to 10 MHz, the common rate between Jawbreaker and HackRF One. */ sample_rate_set(10000000); si5351c_set_clock_source(&clock_gen, PLL_SOURCE_XTAL); // soft reset // uint8_t resetdata[] = { 177, 0xac }; // si5351c_write(&clock_gen, resetdata, sizeof(resetdata)); si5351c_reset_pll(&clock_gen); si5351c_enable_clock_outputs(&clock_gen); //FIXME disable I2C /* Kick I2C0 down to 400kHz when we switch over to APB1 clock = 204MHz */ i2c_bus_start(clock_gen.bus, &i2c_config_si5351c_fast_clock); /* * 12MHz clock is entering LPC XTAL1/OSC input now. * On HackRF One and Jawbreaker, there is a 12 MHz crystal at the LPC. * Set up PLL1 to run from XTAL1 input. */ //FIXME a lot of the details here should be in a CGU driver /* set xtal oscillator to low frequency mode */ CGU_XTAL_OSC_CTRL &= ~CGU_XTAL_OSC_CTRL_HF_MASK; /* power on the oscillator and wait until stable */ CGU_XTAL_OSC_CTRL &= ~CGU_XTAL_OSC_CTRL_ENABLE_MASK; /* Wait about 100us after Crystal Power ON */ delay(WAIT_CPU_CLOCK_INIT_DELAY); /* use XTAL_OSC as clock source for BASE_M4_CLK (CPU) */ CGU_BASE_M4_CLK = (CGU_BASE_M4_CLK_CLK_SEL(CGU_SRC_XTAL) | CGU_BASE_M4_CLK_AUTOBLOCK(1)); /* use XTAL_OSC as clock source for APB1 */ CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_AUTOBLOCK(1) | CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_XTAL); /* use XTAL_OSC as clock source for APB3 */ CGU_BASE_APB3_CLK = CGU_BASE_APB3_CLK_AUTOBLOCK(1) | CGU_BASE_APB3_CLK_CLK_SEL(CGU_SRC_XTAL); cpu_clock_pll1_low_speed(); /* use PLL1 as clock source for BASE_M4_CLK (CPU) */ CGU_BASE_M4_CLK = (CGU_BASE_M4_CLK_CLK_SEL(CGU_SRC_PLL1) | CGU_BASE_M4_CLK_AUTOBLOCK(1)); /* use XTAL_OSC as clock source for PLL0USB */ CGU_PLL0USB_CTRL = CGU_PLL0USB_CTRL_PD(1) | CGU_PLL0USB_CTRL_AUTOBLOCK(1) | CGU_PLL0USB_CTRL_CLK_SEL(CGU_SRC_XTAL); while (CGU_PLL0USB_STAT & CGU_PLL0USB_STAT_LOCK_MASK); /* configure PLL0USB to produce 480 MHz clock from 12 MHz XTAL_OSC */ /* Values from User Manual v1.4 Table 94, for 12MHz oscillator. */ CGU_PLL0USB_MDIV = 0x06167FFA; CGU_PLL0USB_NP_DIV = 0x00302062; CGU_PLL0USB_CTRL |= (CGU_PLL0USB_CTRL_PD(1) | CGU_PLL0USB_CTRL_DIRECTI(1) | CGU_PLL0USB_CTRL_DIRECTO(1) | CGU_PLL0USB_CTRL_CLKEN(1)); /* power on PLL0USB and wait until stable */ CGU_PLL0USB_CTRL &= ~CGU_PLL0USB_CTRL_PD_MASK; while (!(CGU_PLL0USB_STAT & CGU_PLL0USB_STAT_LOCK_MASK)); /* use PLL0USB as clock source for USB0 */ CGU_BASE_USB0_CLK = CGU_BASE_USB0_CLK_AUTOBLOCK(1) | CGU_BASE_USB0_CLK_CLK_SEL(CGU_SRC_PLL0USB); /* Switch peripheral clock over to use PLL1 (204MHz) */ CGU_BASE_PERIPH_CLK = CGU_BASE_PERIPH_CLK_AUTOBLOCK(1) | CGU_BASE_PERIPH_CLK_CLK_SEL(CGU_SRC_PLL1); /* Switch APB1 clock over to use PLL1 (204MHz) */ CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_AUTOBLOCK(1) | CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_PLL1); /* Switch APB3 clock over to use PLL1 (204MHz) */ CGU_BASE_APB3_CLK = CGU_BASE_APB3_CLK_AUTOBLOCK(1) | CGU_BASE_APB3_CLK_CLK_SEL(CGU_SRC_PLL1); CGU_BASE_SSP0_CLK = CGU_BASE_SSP0_CLK_AUTOBLOCK(1) | CGU_BASE_SSP0_CLK_CLK_SEL(CGU_SRC_PLL1); CGU_BASE_SSP1_CLK = CGU_BASE_SSP1_CLK_AUTOBLOCK(1) | CGU_BASE_SSP1_CLK_CLK_SEL(CGU_SRC_PLL1); #if (defined JAWBREAKER || defined HACKRF_ONE) /* Disable unused clocks */ /* Start with PLLs */ CGU_PLL0AUDIO_CTRL = CGU_PLL0AUDIO_CTRL_PD(1); /* Dividers */ CGU_IDIVA_CTRL = CGU_IDIVA_CTRL_PD(1); CGU_IDIVB_CTRL = CGU_IDIVB_CTRL_PD(1); CGU_IDIVC_CTRL = CGU_IDIVC_CTRL_PD(1); CGU_IDIVD_CTRL = CGU_IDIVD_CTRL_PD(1); CGU_IDIVE_CTRL = CGU_IDIVE_CTRL_PD(1); /* Base clocks */ CGU_BASE_SPIFI_CLK = CGU_BASE_SPIFI_CLK_PD(1); /* SPIFI is only used at boot */ CGU_BASE_USB1_CLK = CGU_BASE_USB1_CLK_PD(1); /* USB1 is not exposed on HackRF */ CGU_BASE_PHY_RX_CLK = CGU_BASE_PHY_RX_CLK_PD(1); CGU_BASE_PHY_TX_CLK = CGU_BASE_PHY_TX_CLK_PD(1); CGU_BASE_LCD_CLK = CGU_BASE_LCD_CLK_PD(1); CGU_BASE_VADC_CLK = CGU_BASE_VADC_CLK_PD(1); CGU_BASE_SDIO_CLK = CGU_BASE_SDIO_CLK_PD(1); CGU_BASE_UART0_CLK = CGU_BASE_UART0_CLK_PD(1); CGU_BASE_UART1_CLK = CGU_BASE_UART1_CLK_PD(1); CGU_BASE_UART2_CLK = CGU_BASE_UART2_CLK_PD(1); CGU_BASE_UART3_CLK = CGU_BASE_UART3_CLK_PD(1); CGU_BASE_OUT_CLK = CGU_BASE_OUT_CLK_PD(1); CGU_BASE_AUDIO_CLK = CGU_BASE_AUDIO_CLK_PD(1); CGU_BASE_CGU_OUT0_CLK = CGU_BASE_CGU_OUT0_CLK_PD(1); CGU_BASE_CGU_OUT1_CLK = CGU_BASE_CGU_OUT1_CLK_PD(1); /* Disable unused peripheral clocks */ CCU1_CLK_APB1_CAN1_CFG = 0; CCU1_CLK_APB1_I2S_CFG = 0; CCU1_CLK_APB1_MOTOCONPWM_CFG = 0; CCU1_CLK_APB3_ADC0_CFG = 0; CCU1_CLK_APB3_ADC1_CFG = 0; CCU1_CLK_APB3_CAN0_CFG = 0; CCU1_CLK_APB3_DAC_CFG = 0; CCU1_CLK_M4_DMA_CFG = 0; CCU1_CLK_M4_EMC_CFG = 0; CCU1_CLK_M4_EMCDIV_CFG = 0; CCU1_CLK_M4_ETHERNET_CFG = 0; CCU1_CLK_M4_LCD_CFG = 0; CCU1_CLK_M4_QEI_CFG = 0; CCU1_CLK_M4_RITIMER_CFG = 0; CCU1_CLK_M4_SCT_CFG = 0; CCU1_CLK_M4_SDIO_CFG = 0; CCU1_CLK_M4_SPIFI_CFG = 0; CCU1_CLK_M4_TIMER0_CFG = 0; CCU1_CLK_M4_TIMER1_CFG = 0; CCU1_CLK_M4_TIMER2_CFG = 0; CCU1_CLK_M4_TIMER3_CFG = 0; CCU1_CLK_M4_UART1_CFG = 0; CCU1_CLK_M4_USART0_CFG = 0; CCU1_CLK_M4_USART2_CFG = 0; CCU1_CLK_M4_USART3_CFG = 0; CCU1_CLK_M4_USB1_CFG = 0; CCU1_CLK_M4_VADC_CFG = 0; // CCU1_CLK_SPIFI_CFG = 0; // CCU1_CLK_USB1_CFG = 0; // CCU1_CLK_VADC_CFG = 0; // CCU2_CLK_APB0_UART1_CFG = 0; // CCU2_CLK_APB0_USART0_CFG = 0; // CCU2_CLK_APB2_USART2_CFG = 0; // CCU2_CLK_APB2_USART3_CFG = 0; // CCU2_CLK_APLL_CFG = 0; // CCU2_CLK_SDIO_CFG = 0; #endif #ifdef RAD1O /* Disable unused clock outputs. They generate noise. */ scu_pinmux(CLK0, SCU_CLK_IN | SCU_CONF_FUNCTION7); scu_pinmux(CLK2, SCU_CLK_IN | SCU_CONF_FUNCTION7); #endif }