2 * Copyright 2014 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <asm/arch/immap_ls102xa.h>
10 #include <asm/arch/clock.h>
13 DECLARE_GLOBAL_DATA_PTR;
15 #ifndef CONFIG_SYS_FSL_NUM_CC_PLLS
16 #define CONFIG_SYS_FSL_NUM_CC_PLLS 2
19 void get_sys_info(struct sys_info *sys_info)
21 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
22 struct ccsr_clk *clk = (void *)(CONFIG_SYS_FSL_LS1_CLK_ADDR);
24 const u8 core_cplx_pll[6] = {
25 [0] = 0, /* CC1 PPL / 1 */
26 [1] = 0, /* CC1 PPL / 2 */
27 [4] = 1, /* CC2 PPL / 1 */
28 [5] = 1, /* CC2 PPL / 2 */
31 const u8 core_cplx_pll_div[6] = {
32 [0] = 1, /* CC1 PPL / 1 */
33 [1] = 2, /* CC1 PPL / 2 */
34 [4] = 1, /* CC2 PPL / 1 */
35 [5] = 2, /* CC2 PPL / 2 */
39 uint freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS];
40 uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
41 unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
43 sys_info->freq_systembus = sysclk;
44 #ifdef CONFIG_DDR_CLK_FREQ
45 sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
47 sys_info->freq_ddrbus = sysclk;
50 sys_info->freq_systembus *= (in_be32(&gur->rcwsr[0]) >>
51 RCWSR0_SYS_PLL_RAT_SHIFT) & RCWSR0_SYS_PLL_RAT_MASK;
52 sys_info->freq_ddrbus *= (in_be32(&gur->rcwsr[0]) >>
53 RCWSR0_MEM_PLL_RAT_SHIFT) & RCWSR0_MEM_PLL_RAT_MASK;
55 for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) {
56 ratio[i] = (in_be32(&clk->pllcgsr[i].pllcngsr) >> 1) & 0x3f;
58 freq_c_pll[i] = sysclk * ratio[i];
60 freq_c_pll[i] = sys_info->freq_systembus * ratio[i];
63 for (cpu = 0; cpu < CONFIG_MAX_CPUS; cpu++) {
64 u32 c_pll_sel = (in_be32(&clk->clkcsr[cpu].clkcncsr) >> 27)
66 u32 cplx_pll = core_cplx_pll[c_pll_sel];
68 sys_info->freq_processor[cpu] =
69 freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
72 #if defined(CONFIG_FSL_IFC)
73 sys_info->freq_localbus = sys_info->freq_systembus;
79 struct sys_info sys_info;
81 get_sys_info(&sys_info);
82 gd->cpu_clk = sys_info.freq_processor[0];
83 gd->bus_clk = sys_info.freq_systembus;
84 gd->mem_clk = sys_info.freq_ddrbus * 2;
86 #if defined(CONFIG_FSL_ESDHC)
87 gd->arch.sdhc_clk = gd->bus_clk;
93 ulong get_bus_freq(ulong dummy)
98 ulong get_ddr_freq(ulong dummy)
103 int get_serial_clock(void)
105 return gd->bus_clk / 2;
108 unsigned int mxc_get_clock(enum mxc_clock clk)
112 return get_bus_freq(0) / 2;
114 return get_bus_freq(0);
116 return get_bus_freq(0) / 2;
118 return get_bus_freq(0) / 2;
120 printf("Unsupported clock\n");