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/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/compiler.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/arch/clock.h>
#include <asm/arch/soc.h>
#include <fsl_ifc.h>
#include "cpu.h"
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_SYS_FSL_NUM_CC_PLLS
#define CONFIG_SYS_FSL_NUM_CC_PLLS 2
#endif
void get_sys_info(struct sys_info *sys_info)
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
#if (defined(CONFIG_FSL_ESDHC) &&\
defined(CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK)) ||\
defined(CONFIG_SYS_DPAA_FMAN)
u32 rcw_tmp;
#endif
struct ccsr_clk *clk = (void *)(CONFIG_SYS_FSL_CLK_ADDR);
unsigned int cpu;
const u8 core_cplx_pll[8] = {
[0] = 0, /* CC1 PPL / 1 */
[1] = 0, /* CC1 PPL / 2 */
[4] = 1, /* CC2 PPL / 1 */
[5] = 1, /* CC2 PPL / 2 */
};
const u8 core_cplx_pll_div[8] = {
[0] = 1, /* CC1 PPL / 1 */
[1] = 2, /* CC1 PPL / 2 */
[4] = 1, /* CC2 PPL / 1 */
[5] = 2, /* CC2 PPL / 2 */
};
uint i, cluster;
uint freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS];
uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
unsigned long cluster_clk;
sys_info->freq_systembus = sysclk;
#ifndef CONFIG_CLUSTER_CLK_FREQ
#define CONFIG_CLUSTER_CLK_FREQ CONFIG_SYS_CLK_FREQ
#endif
cluster_clk = CONFIG_CLUSTER_CLK_FREQ;
#ifdef CONFIG_DDR_CLK_FREQ
sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
#else
sys_info->freq_ddrbus = sysclk;
#endif
/* The freq_systembus is used to record frequency of platform PLL */
sys_info->freq_systembus *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_SHIFT) &
FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_MASK;
#ifdef CONFIG_ARCH_LS1012A
sys_info->freq_ddrbus = 2 * sys_info->freq_systembus;
#else
sys_info->freq_ddrbus *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS2_RCWSR0_MEM_PLL_RAT_SHIFT) &
FSL_CHASSIS2_RCWSR0_MEM_PLL_RAT_MASK;
#endif
for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) {
ratio[i] = (in_be32(&clk->pllcgsr[i].pllcngsr) >> 1) & 0xff;
if (ratio[i] > 4)
freq_c_pll[i] = cluster_clk * ratio[i];
else
freq_c_pll[i] = sys_info->freq_systembus * ratio[i];
}
for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
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];
sys_info->freq_processor[cpu] =
freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
}
#define HWA_CGA_M1_CLK_SEL 0xe0000000
#define HWA_CGA_M1_CLK_SHIFT 29
#ifdef CONFIG_SYS_DPAA_FMAN
rcw_tmp = in_be32(&gur->rcwsr[7]);
switch ((rcw_tmp & HWA_CGA_M1_CLK_SEL) >> HWA_CGA_M1_CLK_SHIFT) {
case 2:
sys_info->freq_fman[0] = freq_c_pll[0] / 2;
break;
case 3:
sys_info->freq_fman[0] = freq_c_pll[0] / 3;
break;
case 4:
sys_info->freq_fman[0] = freq_c_pll[0] / 4;
break;
case 5:
sys_info->freq_fman[0] = sys_info->freq_systembus;
break;
case 6:
sys_info->freq_fman[0] = freq_c_pll[1] / 2;
break;
case 7:
sys_info->freq_fman[0] = freq_c_pll[1] / 3;
break;
default:
printf("Error: Unknown FMan1 clock select!\n");
break;
}
#endif
#define HWA_CGA_M2_CLK_SEL 0x00000007
#define HWA_CGA_M2_CLK_SHIFT 0
#ifdef CONFIG_FSL_ESDHC
#ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
rcw_tmp = in_be32(&gur->rcwsr[15]);
switch ((rcw_tmp & HWA_CGA_M2_CLK_SEL) >> HWA_CGA_M2_CLK_SHIFT) {
case 1:
sys_info->freq_sdhc = freq_c_pll[1];
break;
case 2:
sys_info->freq_sdhc = freq_c_pll[1] / 2;
break;
case 3:
sys_info->freq_sdhc = freq_c_pll[1] / 3;
break;
case 6:
sys_info->freq_sdhc = freq_c_pll[0] / 2;
break;
default:
printf("Error: Unknown ESDHC clock select!\n");
break;
}
#else
sys_info->freq_sdhc = (sys_info->freq_systembus /
CONFIG_SYS_FSL_PCLK_DIV) /
CONFIG_SYS_FSL_SDHC_CLK_DIV;
#endif
#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)
{
struct sys_info sys_info;
get_sys_info(&sys_info);
gd->cpu_clk = sys_info.freq_processor[0];
gd->bus_clk = sys_info.freq_systembus / CONFIG_SYS_FSL_PCLK_DIV;
gd->mem_clk = sys_info.freq_ddrbus;
#ifdef CONFIG_FSL_ESDHC
gd->arch.sdhc_clk = sys_info.freq_sdhc;
#endif
if (gd->cpu_clk != 0)
return 0;
else
return 1;
}
/********************************************
* get_bus_freq
* return platform clock in Hz
*********************************************/
ulong get_bus_freq(ulong dummy)
{
if (!gd->bus_clk)
get_clocks();
return gd->bus_clk;
}
ulong get_ddr_freq(ulong dummy)
{
if (!gd->mem_clk)
get_clocks();
return gd->mem_clk;
}
#ifdef CONFIG_FSL_ESDHC
int get_sdhc_freq(ulong dummy)
{
if (!gd->arch.sdhc_clk)
get_clocks();
return gd->arch.sdhc_clk;
}
#endif
int get_serial_clock(void)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_DUART_CLK_DIV;
}
int get_i2c_freq(ulong dummy)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_I2C_CLK_DIV;
}
int get_dspi_freq(ulong dummy)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_DSPI_CLK_DIV;
}
#ifdef CONFIG_FSL_LPUART
int get_uart_freq(ulong dummy)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_LPUART_CLK_DIV;
}
#endif
unsigned int mxc_get_clock(enum mxc_clock clk)
{
switch (clk) {
case MXC_I2C_CLK:
return get_i2c_freq(0);
#if defined(CONFIG_FSL_ESDHC)
case MXC_ESDHC_CLK:
return get_sdhc_freq(0);
#endif
case MXC_DSPI_CLK:
return get_dspi_freq(0);
#ifdef CONFIG_FSL_LPUART
case MXC_UART_CLK:
return get_uart_freq(0);
#endif
default:
printf("Unsupported clock\n");
}
return 0;
}
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