// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2004, 2007-2011 Freescale Semiconductor, Inc. * * (C) Copyright 2003 Motorola Inc. * Xianghua Xiao, (X.Xiao@motorola.com) * * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. */ #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; /* --------------------------------------------------------------- */ void get_sys_info(sys_info_t *sys_info) { volatile ccsr_gur_t *gur = (void *)(CFG_SYS_MPC85xx_GUTS_ADDR); #ifdef CONFIG_FSL_CORENET volatile ccsr_clk_t *clk = (void *)(CFG_SYS_FSL_CORENET_CLK_ADDR); unsigned int cpu; #ifdef CONFIG_HETROGENOUS_CLUSTERS unsigned int dsp_cpu; uint rcw_tmp1, rcw_tmp2; #endif #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2 int cc_group[12] = CFG_SYS_FSL_CLUSTER_CLOCKS; #endif __maybe_unused u32 svr; const u8 core_cplx_PLL[16] = { [ 0] = 0, /* CC1 PPL / 1 */ [ 1] = 0, /* CC1 PPL / 2 */ [ 2] = 0, /* CC1 PPL / 4 */ [ 4] = 1, /* CC2 PPL / 1 */ [ 5] = 1, /* CC2 PPL / 2 */ [ 6] = 1, /* CC2 PPL / 4 */ [ 8] = 2, /* CC3 PPL / 1 */ [ 9] = 2, /* CC3 PPL / 2 */ [10] = 2, /* CC3 PPL / 4 */ [12] = 3, /* CC4 PPL / 1 */ [13] = 3, /* CC4 PPL / 2 */ [14] = 3, /* CC4 PPL / 4 */ }; const u8 core_cplx_pll_div[16] = { [ 0] = 1, /* CC1 PPL / 1 */ [ 1] = 2, /* CC1 PPL / 2 */ [ 2] = 4, /* CC1 PPL / 4 */ [ 4] = 1, /* CC2 PPL / 1 */ [ 5] = 2, /* CC2 PPL / 2 */ [ 6] = 4, /* CC2 PPL / 4 */ [ 8] = 1, /* CC3 PPL / 1 */ [ 9] = 2, /* CC3 PPL / 2 */ [10] = 4, /* CC3 PPL / 4 */ [12] = 1, /* CC4 PPL / 1 */ [13] = 2, /* CC4 PPL / 2 */ [14] = 4, /* CC4 PPL / 4 */ }; uint i, freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS]; #if !defined(CONFIG_FM_PLAT_CLK_DIV) || !defined(CONFIG_PME_PLAT_CLK_DIV) uint rcw_tmp; #endif uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS]; unsigned long sysclk = get_board_sys_clk(); uint mem_pll_rat; sys_info->freq_systembus = sysclk; #ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK uint ddr_refclk_sel; unsigned int porsr1_sys_clk; porsr1_sys_clk = in_be32(&gur->porsr1) >> FSL_DCFG_PORSR1_SYSCLK_SHIFT & FSL_DCFG_PORSR1_SYSCLK_MASK; if (porsr1_sys_clk == FSL_DCFG_PORSR1_SYSCLK_DIFF) sys_info->diff_sysclk = 1; else sys_info->diff_sysclk = 0; /* * DDR_REFCLK_SEL rcw bit is used to determine if DDR PLLS * are driven by separate DDR Refclock or single source * differential clock. */ ddr_refclk_sel = (in_be32(&gur->rcwsr[5]) >> FSL_CORENET2_RCWSR5_DDR_REFCLK_SEL_SHIFT) & FSL_CORENET2_RCWSR5_DDR_REFCLK_SEL_MASK; /* * For single source clocking, both ddrclock and sysclock * are driven by differential sysclock. */ if (ddr_refclk_sel == FSL_CORENET2_RCWSR5_DDR_REFCLK_SINGLE_CLK) sys_info->freq_ddrbus = get_board_sys_clk(); else #endif #if defined(CONFIG_DYNAMIC_DDR_CLK_FREQ) || defined(CONFIG_STATIC_DDR_CLK_FREQ) sys_info->freq_ddrbus = get_board_ddr_clk(); #else sys_info->freq_ddrbus = sysclk; #endif sys_info->freq_systembus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f; mem_pll_rat = (in_be32(&gur->rcwsr[0]) >> FSL_CORENET_RCWSR0_MEM_PLL_RAT_SHIFT) & FSL_CORENET_RCWSR0_MEM_PLL_RAT_MASK; #ifdef CONFIG_SYS_FSL_ERRATUM_A007212 if (mem_pll_rat == 0) { mem_pll_rat = (in_be32(&gur->rcwsr[0]) >> FSL_CORENET_RCWSR0_MEM_PLL_RAT_RESV_SHIFT) & FSL_CORENET_RCWSR0_MEM_PLL_RAT_MASK; } #endif /* T4240/T4160 Rev2.0 MEM_PLL_RAT uses a value which is half of * T4240/T4160 Rev1.0. eg. It's 12 in Rev1.0, however, for Rev2.0 * it uses 6. * T2080 rev 1.1 and later also use half mem_pll comparing with rev 1.0 */ #if defined(CONFIG_ARCH_T4240) || defined(CONFIG_ARCH_T2080) svr = get_svr(); switch (SVR_SOC_VER(svr)) { case SVR_T4240: case SVR_T4160: case SVR_T4120: case SVR_T4080: if (SVR_MAJ(svr) >= 2) mem_pll_rat *= 2; break; case SVR_T2080: case SVR_T2081: if ((SVR_MAJ(svr) > 1) || (SVR_MIN(svr) >= 1)) mem_pll_rat *= 2; break; default: break; } #endif if (mem_pll_rat > 2) sys_info->freq_ddrbus *= mem_pll_rat; else sys_info->freq_ddrbus = sys_info->freq_systembus * mem_pll_rat; for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) { ratio[i] = (in_be32(&clk->pllcgsr[i].pllcngsr) >> 1) & 0x3f; if (ratio[i] > 4) freq_c_pll[i] = sysclk * ratio[i]; else freq_c_pll[i] = sys_info->freq_systembus * ratio[i]; } #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2 /* * As per CHASSIS2 architeture total 12 clusters are posible and * Each cluster has up to 4 cores, sharing the same PLL selection. * The cluster clock assignment is SoC defined. * * Total 4 clock groups are possible with 3 PLLs each. * as per array indices, clock group A has 0, 1, 2 numbered PLLs & * clock group B has 3, 4, 6 and so on. * * Clock group A having PLL1, PLL2, PLL3, feeding cores of any cluster * depends upon the SoC architeture. Same applies to other * clock groups and clusters. * */ for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) { int cluster = fsl_qoriq_core_to_cluster(cpu); u32 c_pll_sel = (in_be32(&clk->clkcsr[cluster].clkcncsr) >> 27) & 0xf; u32 cplx_pll = core_cplx_PLL[c_pll_sel]; cplx_pll += cc_group[cluster] - 1; sys_info->freq_processor[cpu] = freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel]; } #ifdef CONFIG_HETROGENOUS_CLUSTERS for_each_cpu(i, dsp_cpu, cpu_num_dspcores(), cpu_dsp_mask()) { int dsp_cluster = fsl_qoriq_dsp_core_to_cluster(dsp_cpu); u32 c_pll_sel = (in_be32 (&clk->clkcsr[dsp_cluster].clkcncsr) >> 27) & 0xf; u32 cplx_pll = core_cplx_PLL[c_pll_sel]; cplx_pll += cc_group[dsp_cluster] - 1; sys_info->freq_processor_dsp[dsp_cpu] = freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel]; } #endif #if defined(CONFIG_ARCH_B4860) || defined(CONFIG_ARCH_B4420) || \ defined(CONFIG_ARCH_T2080) #define FM1_CLK_SEL 0xe0000000 #define FM1_CLK_SHIFT 29 #elif defined(CONFIG_ARCH_T1024) #define FM1_CLK_SEL 0x00000007 #define FM1_CLK_SHIFT 0 #else #define PME_CLK_SEL 0xe0000000 #define PME_CLK_SHIFT 29 #define FM1_CLK_SEL 0x1c000000 #define FM1_CLK_SHIFT 26 #endif #if !defined(CONFIG_FM_PLAT_CLK_DIV) || !defined(CONFIG_PME_PLAT_CLK_DIV) #if defined(CONFIG_ARCH_T1024) rcw_tmp = in_be32(&gur->rcwsr[15]) - 4; #else rcw_tmp = in_be32(&gur->rcwsr[7]); #endif #endif #ifdef CONFIG_SYS_DPAA_PME #ifndef CONFIG_PME_PLAT_CLK_DIV switch ((rcw_tmp & PME_CLK_SEL) >> PME_CLK_SHIFT) { case 1: sys_info->freq_pme = freq_c_pll[CONFIG_SYS_PME_CLK]; break; case 2: sys_info->freq_pme = freq_c_pll[CONFIG_SYS_PME_CLK] / 2; break; case 3: sys_info->freq_pme = freq_c_pll[CONFIG_SYS_PME_CLK] / 3; break; case 4: sys_info->freq_pme = freq_c_pll[CONFIG_SYS_PME_CLK] / 4; break; case 6: sys_info->freq_pme = freq_c_pll[CONFIG_SYS_PME_CLK + 1] / 2; break; case 7: sys_info->freq_pme = freq_c_pll[CONFIG_SYS_PME_CLK + 1] / 3; break; default: printf("Error: Unknown PME clock select!\n"); case 0: sys_info->freq_pme = sys_info->freq_systembus / 2; break; } #else sys_info->freq_pme = sys_info->freq_systembus / CONFIG_SYS_PME_CLK; #endif #endif #ifdef CONFIG_SYS_DPAA_QBMAN #ifndef CONFIG_QBMAN_CLK_DIV #define CONFIG_QBMAN_CLK_DIV 2 #endif sys_info->freq_qman = sys_info->freq_systembus / CONFIG_QBMAN_CLK_DIV; #endif #if defined(CONFIG_SYS_MAPLE) #define CPRI_CLK_SEL 0x1C000000 #define CPRI_CLK_SHIFT 26 #define CPRI_ALT_CLK_SEL 0x00007000 #define CPRI_ALT_CLK_SHIFT 12 rcw_tmp1 = in_be32(&gur->rcwsr[7]); /* Reading RCW bits: 224-255*/ rcw_tmp2 = in_be32(&gur->rcwsr[15]); /* Reading RCW bits: 480-511*/ /* For MAPLE and CPRI frequency */ switch ((rcw_tmp1 & CPRI_CLK_SEL) >> CPRI_CLK_SHIFT) { case 1: sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK]; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK]; break; case 2: sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 2; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 2; break; case 3: sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 3; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 3; break; case 4: sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 4; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK] / 4; break; case 5: if (((rcw_tmp2 & CPRI_ALT_CLK_SEL) >> CPRI_ALT_CLK_SHIFT) == 6) { sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 2; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 2; } if (((rcw_tmp2 & CPRI_ALT_CLK_SEL) >> CPRI_ALT_CLK_SHIFT) == 7) { sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 3; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK - 2] / 3; } break; case 6: sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 2; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 2; break; case 7: sys_info->freq_maple = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 3; sys_info->freq_cpri = freq_c_pll[CONFIG_SYS_CPRI_CLK + 1] / 3; break; default: printf("Error: Unknown MAPLE/CPRI clock select!\n"); } /* For MAPLE ULB and eTVPE frequencies */ #define ULB_CLK_SEL 0x00000038 #define ULB_CLK_SHIFT 3 #define ETVPE_CLK_SEL 0x00000007 #define ETVPE_CLK_SHIFT 0 switch ((rcw_tmp2 & ULB_CLK_SEL) >> ULB_CLK_SHIFT) { case 1: sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK]; break; case 2: sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK] / 2; break; case 3: sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK] / 3; break; case 4: sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK] / 4; break; case 5: sys_info->freq_maple_ulb = sys_info->freq_systembus; break; case 6: sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK - 1] / 2; break; case 7: sys_info->freq_maple_ulb = freq_c_pll[CONFIG_SYS_ULB_CLK - 1] / 3; break; default: printf("Error: Unknown MAPLE ULB clock select!\n"); } switch ((rcw_tmp2 & ETVPE_CLK_SEL) >> ETVPE_CLK_SHIFT) { case 1: sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK]; break; case 2: sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK] / 2; break; case 3: sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK] / 3; break; case 4: sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK] / 4; break; case 5: sys_info->freq_maple_etvpe = sys_info->freq_systembus; break; case 6: sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK - 1] / 2; break; case 7: sys_info->freq_maple_etvpe = freq_c_pll[CONFIG_SYS_ETVPE_CLK - 1] / 3; break; default: printf("Error: Unknown MAPLE eTVPE clock select!\n"); } #endif #ifdef CONFIG_SYS_DPAA_FMAN #ifndef CONFIG_FM_PLAT_CLK_DIV switch ((rcw_tmp & FM1_CLK_SEL) >> FM1_CLK_SHIFT) { case 1: sys_info->freq_fman[0] = freq_c_pll[CONFIG_SYS_FM1_CLK]; break; case 2: sys_info->freq_fman[0] = freq_c_pll[CONFIG_SYS_FM1_CLK] / 2; break; case 3: sys_info->freq_fman[0] = freq_c_pll[CONFIG_SYS_FM1_CLK] / 3; break; case 4: sys_info->freq_fman[0] = freq_c_pll[CONFIG_SYS_FM1_CLK] / 4; break; case 5: sys_info->freq_fman[0] = sys_info->freq_systembus; break; case 6: sys_info->freq_fman[0] = freq_c_pll[CONFIG_SYS_FM1_CLK + 1] / 2; break; case 7: sys_info->freq_fman[0] = freq_c_pll[CONFIG_SYS_FM1_CLK + 1] / 3; break; default: printf("Error: Unknown FMan1 clock select!\n"); case 0: sys_info->freq_fman[0] = sys_info->freq_systembus / 2; break; } #if (CONFIG_SYS_NUM_FMAN) == 2 #ifdef CONFIG_SYS_FM2_CLK #define FM2_CLK_SEL 0x00000038 #define FM2_CLK_SHIFT 3 rcw_tmp = in_be32(&gur->rcwsr[15]); switch ((rcw_tmp & FM2_CLK_SEL) >> FM2_CLK_SHIFT) { case 1: sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK + 1]; break; case 2: sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK + 1] / 2; break; case 3: sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK + 1] / 3; break; case 4: sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK + 1] / 4; break; case 5: sys_info->freq_fman[1] = sys_info->freq_systembus; break; case 6: sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK] / 2; break; case 7: sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK] / 3; break; default: printf("Error: Unknown FMan2 clock select!\n"); case 0: sys_info->freq_fman[1] = sys_info->freq_systembus / 2; break; } #endif #endif /* CONFIG_SYS_NUM_FMAN == 2 */ #else sys_info->freq_fman[0] = sys_info->freq_systembus / CONFIG_SYS_FM1_CLK; #endif #endif #else /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */ for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) { u32 c_pll_sel = (in_be32(&clk->clkcsr[cpu].clkcncsr) >> 27) & 0xf; u32 cplx_pll = core_cplx_PLL[c_pll_sel]; sys_info->freq_processor[cpu] = freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel]; } #define PME_CLK_SEL 0x80000000 #define FM1_CLK_SEL 0x40000000 #define FM2_CLK_SEL 0x20000000 #define HWA_ASYNC_DIV 0x04000000 #if (CONFIG_SYS_FSL_NUM_CC_PLLS == 2) #define HWA_CC_PLL 1 #elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 3) #define HWA_CC_PLL 2 #elif (CONFIG_SYS_FSL_NUM_CC_PLLS == 4) #define HWA_CC_PLL 2 #else #error CONFIG_SYS_FSL_NUM_CC_PLLS not set or unknown case #endif rcw_tmp = in_be32(&gur->rcwsr[7]); #ifdef CONFIG_SYS_DPAA_PME if (rcw_tmp & PME_CLK_SEL) { if (rcw_tmp & HWA_ASYNC_DIV) sys_info->freq_pme = freq_c_pll[HWA_CC_PLL] / 4; else sys_info->freq_pme = freq_c_pll[HWA_CC_PLL] / 2; } else { sys_info->freq_pme = sys_info->freq_systembus / 2; } #endif #ifdef CONFIG_SYS_DPAA_FMAN if (rcw_tmp & FM1_CLK_SEL) { if (rcw_tmp & HWA_ASYNC_DIV) sys_info->freq_fman[0] = freq_c_pll[HWA_CC_PLL] / 4; else sys_info->freq_fman[0] = freq_c_pll[HWA_CC_PLL] / 2; } else { sys_info->freq_fman[0] = sys_info->freq_systembus / 2; } #if (CONFIG_SYS_NUM_FMAN) == 2 if (rcw_tmp & FM2_CLK_SEL) { if (rcw_tmp & HWA_ASYNC_DIV) sys_info->freq_fman[1] = freq_c_pll[HWA_CC_PLL] / 4; else sys_info->freq_fman[1] = freq_c_pll[HWA_CC_PLL] / 2; } else { sys_info->freq_fman[1] = sys_info->freq_systembus / 2; } #endif #endif #ifdef CONFIG_SYS_DPAA_QBMAN sys_info->freq_qman = sys_info->freq_systembus / 2; #endif #endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */ #ifdef CONFIG_U_QE sys_info->freq_qe = sys_info->freq_systembus / 2; #endif #else /* CONFIG_FSL_CORENET */ uint plat_ratio, e500_ratio, half_freq_systembus; int i; #ifdef CONFIG_QE __maybe_unused u32 qe_ratio; #endif plat_ratio = (gur->porpllsr) & 0x0000003e; plat_ratio >>= 1; sys_info->freq_systembus = plat_ratio * get_board_sys_clk(); /* Divide before multiply to avoid integer * overflow for processor speeds above 2GHz */ half_freq_systembus = sys_info->freq_systembus/2; for (i = 0; i < cpu_numcores(); i++) { e500_ratio = ((gur->porpllsr) >> (i * 8 + 16)) & 0x3f; sys_info->freq_processor[i] = e500_ratio * half_freq_systembus; } /* Note: freq_ddrbus is the MCLK frequency, not the data rate. */ sys_info->freq_ddrbus = sys_info->freq_systembus; #if defined(CONFIG_DYNAMIC_DDR_CLK_FREQ) || defined(CONFIG_STATIC_DDR_CLK_FREQ) { u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO) >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT; if (ddr_ratio != 0x7) sys_info->freq_ddrbus = ddr_ratio * get_board_ddr_clk(); } #endif #ifdef CONFIG_QE #if defined(CONFIG_ARCH_P1021) || defined(CONFIG_ARCH_P1025) sys_info->freq_qe = sys_info->freq_systembus; #else qe_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_QE_RATIO) >> MPC85xx_PORPLLSR_QE_RATIO_SHIFT; sys_info->freq_qe = qe_ratio * get_board_sys_clk(); #endif #endif #ifdef CONFIG_SYS_DPAA_FMAN sys_info->freq_fman[0] = sys_info->freq_systembus; #endif #endif /* CONFIG_FSL_CORENET */ #if defined(CONFIG_FSL_LBC) sys_info->freq_localbus = sys_info->freq_systembus / CONFIG_SYS_FSL_LBC_CLK_DIV; #endif #if defined(CONFIG_FSL_IFC) sys_info->freq_localbus = sys_info->freq_systembus / CONFIG_SYS_FSL_IFC_CLK_DIV; #endif } int get_clocks(void) { sys_info_t sys_info; #ifdef CONFIG_ARCH_MPC8544 volatile ccsr_gur_t *gur = (void *) CFG_SYS_MPC85xx_GUTS_ADDR; #endif get_sys_info (&sys_info); gd->cpu_clk = sys_info.freq_processor[0]; gd->bus_clk = sys_info.freq_systembus; gd->mem_clk = sys_info.freq_ddrbus; gd->arch.lbc_clk = sys_info.freq_localbus; #ifdef CONFIG_QE gd->arch.qe_clk = sys_info.freq_qe; gd->arch.brg_clk = gd->arch.qe_clk / 2; #endif /* * The base clock for I2C depends on the actual SOC. Unfortunately, * there is no pattern that can be used to determine the frequency, so * the only choice is to look up the actual SOC number and use the value * for that SOC. This information is taken from application note * AN2919. */ #if defined(CONFIG_ARCH_MPC8540) || defined(CONFIG_ARCH_MPC8560) gd->arch.i2c1_clk = sys_info.freq_systembus; #elif defined(CONFIG_ARCH_MPC8544) /* * On the 8544, the I2C clock is the same as the SEC clock. This can be * either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See * 4.4.3.3 of the 8544 RM. Note that this might actually work for all * 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544. */ if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG) gd->arch.i2c1_clk = sys_info.freq_systembus / 3; else gd->arch.i2c1_clk = sys_info.freq_systembus / 2; #else /* Most 85xx SOCs use CCB/2, so this is the default behavior. */ gd->arch.i2c1_clk = sys_info.freq_systembus / 2; #endif gd->arch.i2c2_clk = gd->arch.i2c1_clk; #if defined(CONFIG_FSL_ESDHC) #if defined(CONFIG_ARCH_P1010) gd->arch.sdhc_clk = gd->bus_clk; #else gd->arch.sdhc_clk = gd->bus_clk / 2; #endif #endif /* defined(CONFIG_FSL_ESDHC) */ if(gd->cpu_clk != 0) return (0); else return (1); } /******************************************** * get_bus_freq * return system bus freq in Hz *********************************************/ ulong get_bus_freq(ulong dummy) { return gd->bus_clk; } /******************************************** * get_ddr_freq * return ddr bus freq in Hz *********************************************/ ulong get_ddr_freq (ulong dummy) { return gd->mem_clk; }