/* * (C) Copyright 2013 * NVIDIA Corporation * * SPDX-License-Identifier: GPL-2.0+ */ /* Tegra124 Clock control functions */ #include #include #include #include #include #include #include #include #include /* * Clock types that we can use as a source. The Tegra124 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_PDCT, CLOCK_TYPE_ACPT, CLOCK_TYPE_ASPTE, CLOCK_TYPE_PMDACD2T, CLOCK_TYPE_PCST, CLOCK_TYPE_PC2CC3M, CLOCK_TYPE_PC2CC3S_T, CLOCK_TYPE_PC2CC3M_T, CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */ CLOCK_TYPE_MC2CC3P_A, CLOCK_TYPE_M, CLOCK_TYPE_MCPTM2C2C3, CLOCK_TYPE_PC2CC3T_S, CLOCK_TYPE_AC2CC3P_TS2, 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(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}, /* Additional clock types on Tegra114+ */ /* CLOCK_TYPE_PC2CC3M */ { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_PC2CC3S_T */ { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(SFROM32KHZ), CLK(NONE), CLK(OSC), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_PC2CC3M_T */ { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */ { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_MC2CC3P_A */ { CLK(MEMORY), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(PERIPH), CLK(NONE), CLK(AUDIO), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_M */ { CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE), MASK_BITS_31_30}, /* CLOCK_TYPE_MCPTM2C2C3 */ { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC), CLK(MEMORY2), CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_PC2CC3T_S */ { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(OSC), CLK(NONE), CLK(SFROM32KHZ), CLK(NONE), MASK_BITS_31_29}, /* CLOCK_TYPE_AC2CC3P_TS2 */ { CLK(AUDIO), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3), CLK(PERIPH), CLK(NONE), CLK(OSC), CLK(SRC2), MASK_BITS_31_29}, }; /* * 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_PC2CC3M), TYPE(PERIPHC_PWM, CLOCK_TYPE_PC2CC3S_T), TYPE(PERIPHC_05h, CLOCK_TYPE_NONE), TYPE(PERIPHC_SBC2, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_SBC3, CLOCK_TYPE_PC2CC3M_T), /* 0x08 */ TYPE(PERIPHC_08h, CLOCK_TYPE_NONE), TYPE(PERIPHC_I2C1, CLOCK_TYPE_PC2CC3M_T16), TYPE(PERIPHC_I2C5, CLOCK_TYPE_PC2CC3M_T16), TYPE(PERIPHC_0bh, CLOCK_TYPE_NONE), TYPE(PERIPHC_0ch, CLOCK_TYPE_NONE), TYPE(PERIPHC_SBC1, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T), TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T), /* 0x10 */ TYPE(PERIPHC_10h, CLOCK_TYPE_NONE), TYPE(PERIPHC_11h, CLOCK_TYPE_NONE), TYPE(PERIPHC_VI, CLOCK_TYPE_MC2CC3P_A), TYPE(PERIPHC_13h, CLOCK_TYPE_NONE), TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_16h, CLOCK_TYPE_NONE), TYPE(PERIPHC_17h, CLOCK_TYPE_NONE), /* 0x18 */ TYPE(PERIPHC_18h, CLOCK_TYPE_NONE), TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_VFIR, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_1Bh, CLOCK_TYPE_NONE), TYPE(PERIPHC_1Ch, CLOCK_TYPE_NONE), TYPE(PERIPHC_HSI, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_UART1, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_UART2, CLOCK_TYPE_PC2CC3M_T), /* 0x20 */ TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MC2CC3P_A), TYPE(PERIPHC_21h, CLOCK_TYPE_NONE), TYPE(PERIPHC_22h, CLOCK_TYPE_NONE), TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T), TYPE(PERIPHC_24h, CLOCK_TYPE_NONE), TYPE(PERIPHC_25h, CLOCK_TYPE_NONE), TYPE(PERIPHC_I2C2, CLOCK_TYPE_PC2CC3M_T16), TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPTM2C2C3), /* 0x28 */ TYPE(PERIPHC_UART3, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_29h, CLOCK_TYPE_NONE), TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A), TYPE(PERIPHC_2bh, CLOCK_TYPE_NONE), TYPE(PERIPHC_2ch, CLOCK_TYPE_NONE), TYPE(PERIPHC_SBC4, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_I2C3, CLOCK_TYPE_PC2CC3M_T16), TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PC2CC3M_T), /* 0x30 */ TYPE(PERIPHC_UART4, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_UART5, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_VDE, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_OWR, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_NOR, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_CSITE, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT), TYPE(PERIPHC_DTV, CLOCK_TYPE_NONE), /* 0x38 */ TYPE(PERIPHC_38h, CLOCK_TYPE_NONE), TYPE(PERIPHC_39h, CLOCK_TYPE_NONE), TYPE(PERIPHC_3ah, CLOCK_TYPE_NONE), TYPE(PERIPHC_3bh, CLOCK_TYPE_NONE), TYPE(PERIPHC_MSENC, CLOCK_TYPE_MC2CC3P_A), TYPE(PERIPHC_TSEC, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_3eh, CLOCK_TYPE_NONE), TYPE(PERIPHC_OSC, CLOCK_TYPE_NONE), /* 0x40 */ TYPE(PERIPHC_40h, CLOCK_TYPE_NONE), /* start with 0x3b0 */ TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PC2CC3T_S), TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT), TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT), TYPE(PERIPHC_I2C4, CLOCK_TYPE_PC2CC3M_T16), TYPE(PERIPHC_SBC5, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_SBC6, CLOCK_TYPE_PC2CC3M_T), /* 0x48 */ TYPE(PERIPHC_AUDIO, CLOCK_TYPE_AC2CC3P_TS2), TYPE(PERIPHC_49h, CLOCK_TYPE_NONE), TYPE(PERIPHC_DAM0, CLOCK_TYPE_AC2CC3P_TS2), TYPE(PERIPHC_DAM1, CLOCK_TYPE_AC2CC3P_TS2), TYPE(PERIPHC_DAM2, CLOCK_TYPE_AC2CC3P_TS2), TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PC2CC3S_T), TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE), /* 0x50 */ TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE), TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE), TYPE(PERIPHC_52h, CLOCK_TYPE_NONE), TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PC2CC3S_T), TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE), TYPE(PERIPHC_55h, CLOCK_TYPE_NONE), TYPE(PERIPHC_56h, CLOCK_TYPE_NONE), TYPE(PERIPHC_57h, CLOCK_TYPE_NONE), /* 0x58 */ TYPE(PERIPHC_58h, CLOCK_TYPE_NONE), TYPE(PERIPHC_59h, CLOCK_TYPE_NONE), TYPE(PERIPHC_5ah, CLOCK_TYPE_NONE), TYPE(PERIPHC_5bh, CLOCK_TYPE_NONE), TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT), TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT), TYPE(PERIPHC_HDA, CLOCK_TYPE_PC2CC3M_T), TYPE(PERIPHC_5fh, CLOCK_TYPE_NONE), /* 0x60 */ TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE), TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE), TYPE(PERIPHC_XUSB_FS, CLOCK_TYPE_NONE), TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE), TYPE(PERIPHC_XUSB_SS, CLOCK_TYPE_NONE), TYPE(PERIPHC_CILAB, CLOCK_TYPE_NONE), TYPE(PERIPHC_CILCD, CLOCK_TYPE_NONE), TYPE(PERIPHC_CILE, CLOCK_TYPE_NONE), /* 0x68 */ TYPE(PERIPHC_DSIA_LP, CLOCK_TYPE_NONE), TYPE(PERIPHC_DSIB_LP, CLOCK_TYPE_NONE), TYPE(PERIPHC_ENTROPY, CLOCK_TYPE_NONE), TYPE(PERIPHC_DVFS_REF, CLOCK_TYPE_NONE), TYPE(PERIPHC_DVFS_SOC, CLOCK_TYPE_NONE), TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE), TYPE(PERIPHC_ADX0, CLOCK_TYPE_NONE), TYPE(PERIPHC_AMX0, CLOCK_TYPE_NONE), /* 0x70 */ TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE), TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE), TYPE(PERIPHC_72h, CLOCK_TYPE_NONE), TYPE(PERIPHC_73h, CLOCK_TYPE_NONE), TYPE(PERIPHC_74h, CLOCK_TYPE_NONE), TYPE(PERIPHC_75h, CLOCK_TYPE_NONE), TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE), TYPE(PERIPHC_I2C6, CLOCK_TYPE_PC2CC3M_T16), /* 0x78 */ TYPE(PERIPHC_78h, CLOCK_TYPE_NONE), TYPE(PERIPHC_EMC_DLL, CLOCK_TYPE_MCPTM2C2C3), TYPE(PERIPHC_HDMI_AUDIO, CLOCK_TYPE_NONE), TYPE(PERIPHC_CLK72MHZ, CLOCK_TYPE_NONE), TYPE(PERIPHC_ADX1, CLOCK_TYPE_AC2CC3P_TS2), TYPE(PERIPHC_AMX1, CLOCK_TYPE_AC2CC3P_TS2), TYPE(PERIPHC_VIC, CLOCK_TYPE_NONE), TYPE(PERIPHC_7Fh, CLOCK_TYPE_NONE), }; /* * 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(ISPB), NONE(RESERVED4), NONE(TMR), PERIPHC_UART1, PERIPHC_UART2, /* and vfir 0x68 */ /* 8 */ NONE(GPIO), PERIPHC_SDMMC2, PERIPHC_SPDIF_IN, PERIPHC_I2S1, PERIPHC_I2C1, NONE(RESERVED13), PERIPHC_SDMMC1, PERIPHC_SDMMC4, /* 16 */ NONE(TCW), PERIPHC_PWM, PERIPHC_I2S2, NONE(RESERVED19), PERIPHC_VI, NONE(RESERVED21), NONE(USBD), NONE(ISP), /* 24 */ NONE(RESERVED24), 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(FUSE), /* 40 */ NONE(KFUSE), PERIPHC_SBC1, /* SBCx = SPIx */ PERIPHC_NOR, NONE(RESERVED43), PERIPHC_SBC2, NONE(XIO), PERIPHC_SBC3, PERIPHC_I2C5, /* 48 */ NONE(DSI), NONE(RESERVED49), PERIPHC_HSI, PERIPHC_HDMI, NONE(CSI), NONE(RESERVED53), PERIPHC_I2C2, PERIPHC_UART3, /* 56 */ NONE(MIPI_CAL), PERIPHC_EMC, NONE(USB2), NONE(USB3), NONE(RESERVED60), PERIPHC_VDE, NONE(BSEA), NONE(BSEV), /* Upper word 95:64 */ NONE(RESERVED64), PERIPHC_UART4, PERIPHC_UART5, PERIPHC_I2C3, PERIPHC_SBC4, PERIPHC_SDMMC3, NONE(PCIE), PERIPHC_OWR, /* 72 */ NONE(AFI), PERIPHC_CSITE, NONE(PCIEXCLK), NONE(AVPUCQ), NONE(LA), NONE(TRACECLKIN), NONE(SOC_THERM), NONE(DTV), /* 80 */ NONE(RESERVED80), PERIPHC_I2CSLOW, NONE(DSIB), PERIPHC_TSEC, NONE(RESERVED84), NONE(RESERVED85), NONE(RESERVED86), NONE(EMUCIF), /* 88 */ NONE(RESERVED88), NONE(XUSB_HOST), NONE(RESERVED90), PERIPHC_MSENC, NONE(RESERVED92), NONE(RESERVED93), NONE(RESERVED94), NONE(XUSB_DEV), /* V word: 31:0 */ NONE(CPUG), NONE(CPULP), NONE(V_RESERVED2), PERIPHC_MSELECT, NONE(V_RESERVED4), PERIPHC_I2S3, PERIPHC_I2S4, PERIPHC_I2C4, /* 104 */ PERIPHC_SBC5, PERIPHC_SBC6, PERIPHC_AUDIO, NONE(APBIF), PERIPHC_DAM0, PERIPHC_DAM1, PERIPHC_DAM2, PERIPHC_HDA2CODEC2X, /* 112 */ NONE(ATOMICS), NONE(V_RESERVED17), NONE(V_RESERVED18), NONE(V_RESERVED19), NONE(V_RESERVED20), NONE(V_RESERVED21), NONE(V_RESERVED22), PERIPHC_ACTMON, /* 120 */ NONE(EXTPERIPH1), NONE(EXTPERIPH2), NONE(EXTPERIPH3), NONE(OOB), PERIPHC_SATA, PERIPHC_HDA, NONE(TZRAM), NONE(SE), /* W word: 31:0 */ NONE(HDA2HDMICODEC), NONE(SATACOLD), NONE(W_RESERVED2), NONE(W_RESERVED3), NONE(W_RESERVED4), NONE(W_RESERVED5), NONE(W_RESERVED6), NONE(W_RESERVED7), /* 136 */ NONE(CEC), NONE(W_RESERVED9), NONE(W_RESERVED10), NONE(W_RESERVED11), NONE(W_RESERVED12), NONE(W_RESERVED13), NONE(XUSB_PADCTL), NONE(W_RESERVED15), /* 144 */ NONE(W_RESERVED16), NONE(W_RESERVED17), NONE(W_RESERVED18), NONE(W_RESERVED19), NONE(W_RESERVED20), NONE(ENTROPY), NONE(DDS), NONE(W_RESERVED23), /* 152 */ NONE(DP2), NONE(AMX0), NONE(ADX0), NONE(DVFS), NONE(XUSB_SS), NONE(W_RESERVED29), NONE(W_RESERVED30), NONE(W_RESERVED31), /* X word: 31:0 */ NONE(SPARE), NONE(X_RESERVED1), NONE(X_RESERVED2), NONE(X_RESERVED3), NONE(CAM_MCLK), NONE(CAM_MCLK2), PERIPHC_I2C6, NONE(X_RESERVED7), /* 168 */ NONE(X_RESERVED8), NONE(X_RESERVED9), NONE(X_RESERVED10), NONE(VIM2_CLK), NONE(X_RESERVED12), NONE(X_RESERVED13), NONE(EMC_DLL), NONE(X_RESERVED15), /* 176 */ NONE(HDMI_AUDIO), NONE(CLK72MHZ), NONE(VIC), NONE(X_RESERVED19), NONE(ADX1), NONE(DPAUX), NONE(SOR0), NONE(X_RESERVED23), /* 184 */ NONE(GPU), NONE(AMX1), NONE(X_RESERVED26), NONE(X_RESERVED27), NONE(X_RESERVED28), NONE(X_RESERVED29), NONE(X_RESERVED30), NONE(X_RESERVED31), }; /* * Get the oscillator frequency, from the corresponding hardware configuration * field. Note that Tegra30+ 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_PC2CC3M_T16) *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); } #ifdef CONFIG_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 tegra124 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_RESERVED4: case PERIPH_ID_RESERVED25: case PERIPH_ID_RESERVED35: case PERIPH_ID_RESERVED36: case PERIPH_ID_RESERVED38: case PERIPH_ID_RESERVED43: case PERIPH_ID_RESERVED49: case PERIPH_ID_RESERVED53: case PERIPH_ID_RESERVED64: case PERIPH_ID_RESERVED84: case PERIPH_ID_RESERVED85: case PERIPH_ID_RESERVED86: case PERIPH_ID_RESERVED88: case PERIPH_ID_RESERVED90: case PERIPH_ID_RESERVED92: case PERIPH_ID_RESERVED93: case PERIPH_ID_RESERVED94: case PERIPH_ID_V_RESERVED2: case PERIPH_ID_V_RESERVED4: case PERIPH_ID_V_RESERVED17: case PERIPH_ID_V_RESERVED18: case PERIPH_ID_V_RESERVED19: case PERIPH_ID_V_RESERVED20: case PERIPH_ID_V_RESERVED21: case PERIPH_ID_V_RESERVED22: case PERIPH_ID_W_RESERVED2: case PERIPH_ID_W_RESERVED3: case PERIPH_ID_W_RESERVED4: case PERIPH_ID_W_RESERVED5: case PERIPH_ID_W_RESERVED6: case PERIPH_ID_W_RESERVED7: case PERIPH_ID_W_RESERVED9: case PERIPH_ID_W_RESERVED10: case PERIPH_ID_W_RESERVED11: case PERIPH_ID_W_RESERVED12: case PERIPH_ID_W_RESERVED13: case PERIPH_ID_W_RESERVED15: case PERIPH_ID_W_RESERVED16: case PERIPH_ID_W_RESERVED17: case PERIPH_ID_W_RESERVED18: case PERIPH_ID_W_RESERVED19: case PERIPH_ID_W_RESERVED20: case PERIPH_ID_W_RESERVED23: case PERIPH_ID_W_RESERVED29: case PERIPH_ID_W_RESERVED30: case PERIPH_ID_W_RESERVED31: return PERIPH_ID_NONE; default: return clk_id; } } #endif /* CONFIG_OF_CONTROL */ void clock_early_init(void) { struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; tegra30_set_up_pllp(); /* * 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 */ writel(0x01000000, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc); udelay(2); /* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1 */ writel(0x40000C10, &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_OSC); debug("%s: osc freq is %dHz [0x%08X]\n", __func__, freq, freq); /* ARM CNTFRQ */ asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq)); /* Only Tegra114+ 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); }