Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-05 20:54:31 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/arch/powerpc/cpu/mpc85xx/speed.c
Tom Rini 3238d9340e ppc: Remove ARCH_P1022 support 
With the last of the ARCH_P1022 platforms removed, finish removing the
rest of the platform support.

Cc: Priyanka Jain <priyanka.jain@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2021-04-10 08:04:55 -04:00

667 lines
18 KiB
C
Raw Blame History

// 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 <common.h>
#include <cpu_func.h>
#include <ppc_asm.tmpl>
#include <asm/global_data.h>
#include <linux/compiler.h>
#include <asm/processor.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_SYS_FSL_NUM_CC_PLLS
#define CONFIG_SYS_FSL_NUM_CC_PLLS 6
#endif
/* --------------------------------------------------------------- */
void get_sys_info(sys_info_t *sys_info)
{
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#ifdef CONFIG_FSL_CORENET
volatile ccsr_clk_t *clk = (void *)(CONFIG_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] = CONFIG_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 = CONFIG_SYS_CLK_FREQ;
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 = CONFIG_SYS_CLK_FREQ;
else
#endif
#ifdef CONFIG_DDR_CLK_FREQ
sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
#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_T4160) || \
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) || defined(CONFIG_ARCH_T1023)
#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) || defined(CONFIG_ARCH_T1023)
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 * CONFIG_SYS_CLK_FREQ;
/* 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;
#ifdef CONFIG_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 * CONFIG_DDR_CLK_FREQ;
}
#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 * CONFIG_SYS_CLK_FREQ;
#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 *) CONFIG_SYS_MPC85xx_GUTS_ADDR;
#endif
#if defined(CONFIG_CPM2)
volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
uint sccr, dfbrg;
/* set VCO = 4 * BRG */
cpm->im_cpm_intctl.sccr &= 0xfffffffc;
sccr = cpm->im_cpm_intctl.sccr;
dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
#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_MPC8541) || \
defined(CONFIG_ARCH_MPC8560) || defined(CONFIG_ARCH_MPC8555)
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 defined(CONFIG_CPM2)
gd->arch.vco_out = 2*sys_info.freq_systembus;
gd->arch.cpm_clk = gd->arch.vco_out / 2;
gd->arch.scc_clk = gd->arch.vco_out / 4;
gd->arch.brg_clk = gd->arch.vco_out / (1 << (2 * (dfbrg + 1)));
#endif
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;
}
Reference in a new issue View git blame Copy permalink