Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-12-11 22:03:15 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/arch/powerpc/cpu/mpc85xx/speed.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

714 lines
20 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 <ppc_asm.tmpl>
#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) || \
defined(CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK)
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) || defined(CONFIG_ARCH_T2081)
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) || defined(CONFIG_ARCH_T2081)
#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
#ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
#if defined(CONFIG_ARCH_T2080)
#define ESDHC_CLK_SEL 0x00000007
#define ESDHC_CLK_SHIFT 0
#define ESDHC_CLK_RCWSR 15
#else /* Support T1040 T1024 by now */
#define ESDHC_CLK_SEL 0xe0000000
#define ESDHC_CLK_SHIFT 29
#define ESDHC_CLK_RCWSR 7
#endif
rcw_tmp = in_be32(&gur->rcwsr[ESDHC_CLK_RCWSR]);
switch ((rcw_tmp & ESDHC_CLK_SEL) >> ESDHC_CLK_SHIFT) {
case 1:
sys_info->freq_sdhc = freq_c_pll[CONFIG_SYS_SDHC_CLK];
break;
case 2:
sys_info->freq_sdhc = freq_c_pll[CONFIG_SYS_SDHC_CLK] / 2;
break;
case 3:
sys_info->freq_sdhc = freq_c_pll[CONFIG_SYS_SDHC_CLK] / 3;
break;
#if defined(CONFIG_SYS_SDHC_CLK_2_PLL)
case 4:
sys_info->freq_sdhc = freq_c_pll[CONFIG_SYS_SDHC_CLK] / 4;
break;
#if defined(CONFIG_ARCH_T2080)
case 5:
sys_info->freq_sdhc = freq_c_pll[1 - CONFIG_SYS_SDHC_CLK];
break;
#endif
case 6:
sys_info->freq_sdhc = freq_c_pll[1 - CONFIG_SYS_SDHC_CLK] / 2;
break;
case 7:
sys_info->freq_sdhc = freq_c_pll[1 - CONFIG_SYS_SDHC_CLK] / 3;
break;
#endif
default:
sys_info->freq_sdhc = 0;
printf("Error: Unknown SDHC peripheral clock select!\n");
}
#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) || \
defined(CONFIG_ARCH_P1022)
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)
#ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
gd->arch.sdhc_clk = sys_info.freq_sdhc / 2;
#else
#if defined(CONFIG_ARCH_MPC8569) || defined(CONFIG_ARCH_P1010)
gd->arch.sdhc_clk = gd->bus_clk;
#else
gd->arch.sdhc_clk = gd->bus_clk / 2;
#endif
#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