/* * (C) Copyright 2010-2015 * NVIDIA Corporation * * SPDX-License-Identifier: GPL-2.0+ */ /* Tegra114 Clock control functions */ #include #include #include #include #include #include #include #include #include /* * Clock types that we can use as a source. The Tegra114 has muxes for the * peripheral clocks, and in most cases there are four options for the clock * source. This gives us a clock 'type' and exploits what commonality exists * in the device. * * Letters are obvious, except for T which means CLK_M, and S which means the * clock derived from 32KHz. Beware that CLK_M (also called OSC in the * datasheet) and PLL_M are different things. The former is the basic * clock supplied to the SOC from an external oscillator. The latter is the * memory clock PLL. * * See definitions in clock_id in the header file. */ enum clock_type_id { CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */ CLOCK_TYPE_MCPA, /* and so on */ CLOCK_TYPE_MCPT, CLOCK_TYPE_PCM, CLOCK_TYPE_PCMT, CLOCK_TYPE_PCMT16, CLOCK_TYPE_PDCT, CLOCK_TYPE_ACPT, CLOCK_TYPE_ASPTE, CLOCK_TYPE_PMDACD2T, CLOCK_TYPE_PCST, CLOCK_TYPE_COUNT, CLOCK_TYPE_NONE = -1, /* invalid clock type */ }; enum { CLOCK_MAX_MUX = 8 /* number of source options for each clock */ }; /* * Clock source mux for each clock type. This just converts our enum into * a list of mux sources for use by the code. * * Note: * The extra column in each clock source array is used to store the mask * bits in its register for the source. */ #define CLK(x) CLOCK_ID_ ## x static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = { { CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, { CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC), CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_29}, { CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO), CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE), MASK_BITS_31_29}, { CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_28} }; /* * Clock type for each peripheral clock source. We put the name in each * record just so it is easy to match things up */ #define TYPE(name, type) type static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = { /* 0x00 */ TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT), TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT), TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT), TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PCM), TYPE(PERIPHC_PWM, CLOCK_TYPE_PCST), /* only PWM uses b29:28 */ TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_SBC2, CLOCK_TYPE_PCMT), TYPE(PERIPHC_SBC3, CLOCK_TYPE_PCMT), /* 0x08 */ TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_I2C1, CLOCK_TYPE_PCMT16), TYPE(PERIPHC_I2C5, CLOCK_TYPE_PCMT16), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_SBC1, CLOCK_TYPE_PCMT), TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T), TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T), /* 0x10 */ TYPE(PERIPHC_CVE, CLOCK_TYPE_PDCT), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_VI, CLOCK_TYPE_MCPA), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PCMT), TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PCMT), TYPE(PERIPHC_G3D, CLOCK_TYPE_MCPA), TYPE(PERIPHC_G2D, CLOCK_TYPE_MCPA), /* 0x18 */ TYPE(PERIPHC_NDFLASH, CLOCK_TYPE_PCMT), TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PCMT), TYPE(PERIPHC_VFIR, CLOCK_TYPE_PCMT), TYPE(PERIPHC_EPP, CLOCK_TYPE_MCPA), TYPE(PERIPHC_MPE, CLOCK_TYPE_MCPA), TYPE(PERIPHC_MIPI, CLOCK_TYPE_PCMT), /* MIPI base-band HSI */ TYPE(PERIPHC_UART1, CLOCK_TYPE_PCMT), TYPE(PERIPHC_UART2, CLOCK_TYPE_PCMT), /* 0x20 */ TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MCPA), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_TVO, CLOCK_TYPE_PDCT), TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_TVDAC, CLOCK_TYPE_PDCT), TYPE(PERIPHC_I2C2, CLOCK_TYPE_PCMT16), TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPT), /* 0x28 */ TYPE(PERIPHC_UART3, CLOCK_TYPE_PCMT), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_VI, CLOCK_TYPE_MCPA), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_SBC4, CLOCK_TYPE_PCMT), TYPE(PERIPHC_I2C3, CLOCK_TYPE_PCMT16), TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PCMT), /* 0x30 */ TYPE(PERIPHC_UART4, CLOCK_TYPE_PCMT), TYPE(PERIPHC_UART5, CLOCK_TYPE_PCMT), TYPE(PERIPHC_VDE, CLOCK_TYPE_PCMT), TYPE(PERIPHC_OWR, CLOCK_TYPE_PCMT), TYPE(PERIPHC_NOR, CLOCK_TYPE_PCMT), TYPE(PERIPHC_CSITE, CLOCK_TYPE_PCMT), TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), /* 0x38h */ /* Jumps to reg offset 0x3B0h */ TYPE(PERIPHC_G3D2, CLOCK_TYPE_MCPA), TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PCMT), TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PCST), /* s/b PCTS */ TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT), TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT), TYPE(PERIPHC_I2C4, CLOCK_TYPE_PCMT16), TYPE(PERIPHC_SBC5, CLOCK_TYPE_PCMT), TYPE(PERIPHC_SBC6, CLOCK_TYPE_PCMT), /* 0x40 */ TYPE(PERIPHC_AUDIO, CLOCK_TYPE_ACPT), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_DAM0, CLOCK_TYPE_ACPT), TYPE(PERIPHC_DAM1, CLOCK_TYPE_ACPT), TYPE(PERIPHC_DAM2, CLOCK_TYPE_ACPT), TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PCMT), TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PCST), /* MASK 31:30 */ TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE), /* 0x48 */ TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE), TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE), TYPE(PERIPHC_NANDSPEED, CLOCK_TYPE_PCMT), TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PCST), /* MASK 31:30 */ TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE), TYPE(PERIPHC_SPEEDO, CLOCK_TYPE_PCMT), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), /* 0x50 */ TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_NONE, CLOCK_TYPE_NONE), TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT), /* offset 0x420h */ TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT), TYPE(PERIPHC_HDA, CLOCK_TYPE_PCMT), }; /* * This array translates a periph_id to a periphc_internal_id * * Not present/matched up: * uint vi_sensor; _VI_SENSOR_0, 0x1A8 * SPDIF - which is both 0x08 and 0x0c * */ #define NONE(name) (-1) #define OFFSET(name, value) PERIPHC_ ## name static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = { /* Low word: 31:0 */ NONE(CPU), NONE(COP), NONE(TRIGSYS), NONE(RESERVED3), NONE(RTC), NONE(TMR), PERIPHC_UART1, PERIPHC_UART2, /* and vfir 0x68 */ /* 8 */ NONE(GPIO), PERIPHC_SDMMC2, NONE(SPDIF), /* 0x08 and 0x0c, unclear which to use */ PERIPHC_I2S1, PERIPHC_I2C1, PERIPHC_NDFLASH, PERIPHC_SDMMC1, PERIPHC_SDMMC4, /* 16 */ NONE(RESERVED16), PERIPHC_PWM, PERIPHC_I2S2, PERIPHC_EPP, PERIPHC_VI, PERIPHC_G2D, NONE(USBD), NONE(ISP), /* 24 */ PERIPHC_G3D, NONE(RESERVED25), PERIPHC_DISP2, PERIPHC_DISP1, PERIPHC_HOST1X, NONE(VCP), PERIPHC_I2S0, NONE(CACHE2), /* Middle word: 63:32 */ NONE(MEM), NONE(AHBDMA), NONE(APBDMA), NONE(RESERVED35), NONE(RESERVED36), NONE(STAT_MON), NONE(RESERVED38), NONE(RESERVED39), /* 40 */ NONE(KFUSE), NONE(SBC1), /* SBC1, 0x34, is this SPI1? */ PERIPHC_NOR, NONE(RESERVED43), PERIPHC_SBC2, NONE(RESERVED45), PERIPHC_SBC3, PERIPHC_I2C5, /* 48 */ NONE(DSI), PERIPHC_TVO, /* also CVE 0x40 */ PERIPHC_MIPI, PERIPHC_HDMI, NONE(CSI), PERIPHC_TVDAC, PERIPHC_I2C2, PERIPHC_UART3, /* 56 */ NONE(RESERVED56), PERIPHC_EMC, NONE(USB2), NONE(USB3), PERIPHC_MPE, PERIPHC_VDE, NONE(BSEA), NONE(BSEV), /* Upper word 95:64 */ PERIPHC_SPEEDO, PERIPHC_UART4, PERIPHC_UART5, PERIPHC_I2C3, PERIPHC_SBC4, PERIPHC_SDMMC3, NONE(PCIE), PERIPHC_OWR, /* 72 */ NONE(AFI), PERIPHC_CSITE, NONE(PCIEXCLK), NONE(AVPUCQ), NONE(RESERVED76), NONE(RESERVED77), NONE(RESERVED78), NONE(DTV), /* 80 */ PERIPHC_NANDSPEED, PERIPHC_I2CSLOW, NONE(DSIB), NONE(RESERVED83), NONE(IRAMA), NONE(IRAMB), NONE(IRAMC), NONE(IRAMD), /* 88 */ NONE(CRAM2), NONE(RESERVED89), NONE(MDOUBLER), NONE(RESERVED91), NONE(SUSOUT), NONE(RESERVED93), NONE(RESERVED94), NONE(RESERVED95), /* V word: 31:0 */ NONE(CPUG), NONE(CPULP), PERIPHC_G3D2, PERIPHC_MSELECT, PERIPHC_TSENSOR, PERIPHC_I2S3, PERIPHC_I2S4, PERIPHC_I2C4, /* 08 */ PERIPHC_SBC5, PERIPHC_SBC6, PERIPHC_AUDIO, NONE(APBIF), PERIPHC_DAM0, PERIPHC_DAM1, PERIPHC_DAM2, PERIPHC_HDA2CODEC2X, /* 16 */ NONE(ATOMICS), NONE(RESERVED17), NONE(RESERVED18), NONE(RESERVED19), NONE(RESERVED20), NONE(RESERVED21), NONE(RESERVED22), PERIPHC_ACTMON, /* 24 */ NONE(RESERVED24), NONE(RESERVED25), NONE(RESERVED26), NONE(RESERVED27), PERIPHC_SATA, PERIPHC_HDA, NONE(RESERVED30), NONE(RESERVED31), /* W word: 31:0 */ NONE(HDA2HDMICODEC), NONE(RESERVED1_SATACOLD), NONE(RESERVED2_PCIERX0), NONE(RESERVED3_PCIERX1), NONE(RESERVED4_PCIERX2), NONE(RESERVED5_PCIERX3), NONE(RESERVED6_PCIERX4), NONE(RESERVED7_PCIERX5), /* 40 */ NONE(CEC), NONE(PCIE2_IOBIST), NONE(EMC_IOBIST), NONE(HDMI_IOBIST), NONE(SATA_IOBIST), NONE(MIPI_IOBIST), NONE(EMC1_IOBIST), NONE(XUSB), /* 48 */ NONE(CILAB), NONE(CILCD), NONE(CILE), NONE(DSIA_LP), NONE(DSIB_LP), NONE(RESERVED21_ENTROPY), NONE(RESERVED22_W), NONE(RESERVED23_W), /* 56 */ NONE(RESERVED24_W), NONE(AMX0), NONE(ADX0), NONE(DVFS), NONE(XUSB_SS), NONE(EMC_DLL), NONE(MC1), NONE(EMC1), }; /* * PLL divider shift/mask tables for all PLL IDs. */ struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = { /* * T114: some deviations from T2x/T30. * NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLX, etc.) * If lock_ena or lock_det are >31, they're not used in that PLL. */ { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x0F, .lock_ena = 24, .lock_det = 27, .kcp_shift = 28, .kcp_mask = 3, .kvco_shift = 27, .kvco_mask = 1 }, /* PLLC */ { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0, .lock_ena = 0, .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLM */ { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07, .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLP */ { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07, .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLA */ { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x01, .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLU */ { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07, .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLD */ { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x0F, .lock_ena = 18, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 }, /* PLLX */ { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0, .lock_ena = 9, .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLE */ { .m_shift = 0, .m_mask = 0x0F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07, .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLS (RESERVED) */ }; /* * Get the oscillator frequency, from the corresponding hardware configuration * field. Note that T30/T114 support 3 new higher freqs, but we map back * to the old T20 freqs. Support for the higher oscillators is TBD. */ enum clock_osc_freq clock_get_osc_freq(void) { struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; u32 reg; reg = readl(&clkrst->crc_osc_ctrl); reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT; if (reg & 1) /* one of the newer freqs */ printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg); return reg >> 2; /* Map to most common (T20) freqs */ } /* Returns a pointer to the clock source register for a peripheral */ u32 *get_periph_source_reg(enum periph_id periph_id) { struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; enum periphc_internal_id internal_id; /* Coresight is a special case */ if (periph_id == PERIPH_ID_CSI) return &clkrst->crc_clk_src[PERIPH_ID_CSI+1]; assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT); internal_id = periph_id_to_internal_id[periph_id]; assert(internal_id != -1); if (internal_id >= PERIPHC_VW_FIRST) { internal_id -= PERIPHC_VW_FIRST; return &clkrst->crc_clk_src_vw[internal_id]; } else return &clkrst->crc_clk_src[internal_id]; } /** * Given a peripheral ID and the required source clock, this returns which * value should be programmed into the source mux for that peripheral. * * There is special code here to handle the one source type with 5 sources. * * @param periph_id peripheral to start * @param source PLL id of required parent clock * @param mux_bits Set to number of bits in mux register: 2 or 4 * @param divider_bits Set to number of divider bits (8 or 16) * @return mux value (0-4, or -1 if not found) */ int get_periph_clock_source(enum periph_id periph_id, enum clock_id parent, int *mux_bits, int *divider_bits) { enum clock_type_id type; enum periphc_internal_id internal_id; int mux; assert(clock_periph_id_isvalid(periph_id)); internal_id = periph_id_to_internal_id[periph_id]; assert(periphc_internal_id_isvalid(internal_id)); type = clock_periph_type[internal_id]; assert(clock_type_id_isvalid(type)); *mux_bits = clock_source[type][CLOCK_MAX_MUX]; if (type == CLOCK_TYPE_PCMT16) *divider_bits = 16; else *divider_bits = 8; for (mux = 0; mux < CLOCK_MAX_MUX; mux++) if (clock_source[type][mux] == parent) return mux; /* if we get here, either us or the caller has made a mistake */ printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id, parent); return -1; } void clock_set_enable(enum periph_id periph_id, int enable) { struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; u32 *clk; u32 reg; /* Enable/disable the clock to this peripheral */ assert(clock_periph_id_isvalid(periph_id)); if ((int)periph_id < (int)PERIPH_ID_VW_FIRST) clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)]; else clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)]; reg = readl(clk); if (enable) reg |= PERIPH_MASK(periph_id); else reg &= ~PERIPH_MASK(periph_id); writel(reg, clk); } void reset_set_enable(enum periph_id periph_id, int enable) { struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; u32 *reset; u32 reg; /* Enable/disable reset to the peripheral */ assert(clock_periph_id_isvalid(periph_id)); if (periph_id < PERIPH_ID_VW_FIRST) reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)]; else reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)]; reg = readl(reset); if (enable) reg |= PERIPH_MASK(periph_id); else reg &= ~PERIPH_MASK(periph_id); writel(reg, reset); } #if CONFIG_IS_ENABLED(OF_CONTROL) /* * Convert a device tree clock ID to our peripheral ID. They are mostly * the same but we are very cautious so we check that a valid clock ID is * provided. * * @param clk_id Clock ID according to tegra114 device tree binding * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid */ enum periph_id clk_id_to_periph_id(int clk_id) { if (clk_id > PERIPH_ID_COUNT) return PERIPH_ID_NONE; switch (clk_id) { case PERIPH_ID_RESERVED3: case PERIPH_ID_RESERVED16: case PERIPH_ID_RESERVED24: case PERIPH_ID_RESERVED35: case PERIPH_ID_RESERVED43: case PERIPH_ID_RESERVED45: case PERIPH_ID_RESERVED56: case PERIPH_ID_RESERVED76: case PERIPH_ID_RESERVED77: case PERIPH_ID_RESERVED78: case PERIPH_ID_RESERVED83: case PERIPH_ID_RESERVED89: case PERIPH_ID_RESERVED91: case PERIPH_ID_RESERVED93: case PERIPH_ID_RESERVED94: case PERIPH_ID_RESERVED95: return PERIPH_ID_NONE; default: return clk_id; } } #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */ void clock_early_init(void) { struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; struct clk_pll_info *pllinfo; u32 data; tegra30_set_up_pllp(); /* clear IDDQ before accessing any other PLLC registers */ pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL]; clrbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, PLLC_IDDQ); udelay(2); /* * PLLC output frequency set to 600Mhz * PLLD output frequency set to 925Mhz */ switch (clock_get_osc_freq()) { case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */ clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8); clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12); break; case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */ clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8); clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12); break; case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */ clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8); clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12); break; case CLOCK_OSC_FREQ_19_2: default: /* * These are not supported. It is too early to print a * message and the UART likely won't work anyway due to the * oscillator being wrong. */ break; } /* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */ writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]); /* PLLC_MISC: Set LOCK_ENABLE */ pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL]; setbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, (1 << pllinfo->lock_ena)); udelay(2); /* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1, and enable lock */ pllinfo = &tegra_pll_info_table[CLOCK_ID_DISPLAY]; data = (12 << pllinfo->kcp_shift) | (1 << pllinfo->kvco_shift); data |= (1 << PLLD_CLKENABLE) | (1 << pllinfo->lock_ena); writel(data, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc); udelay(2); } void arch_timer_init(void) { struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE; u32 freq, val; freq = clock_get_rate(CLOCK_ID_CLK_M); debug("%s: clk_m freq is %dHz [0x%08X]\n", __func__, freq, freq); /* ARM CNTFRQ */ asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq)); /* Only T114 has the System Counter regs */ debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq); writel(freq, &sysctr->cntfid0); val = readl(&sysctr->cntcr); val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG; writel(val, &sysctr->cntcr); debug("%s: TSC CNTCR = 0x%08X\n", __func__, val); }