1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2014-2015, Freescale Semiconductor, Inc.
4 * Copyright 2019 NXP Semiconductors
6 * Derived from arch/power/cpu/mpc85xx/speed.c
10 #include <linux/compiler.h>
12 #include <asm/processor.h>
14 #include <asm/arch-fsl-layerscape/immap_lsch3.h>
15 #include <asm/arch/clock.h>
16 #include <asm/arch/soc.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 #ifndef CONFIG_SYS_FSL_NUM_CC_PLLS
22 #define CONFIG_SYS_FSL_NUM_CC_PLLS 6
26 void get_sys_info(struct sys_info *sys_info)
28 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
29 struct ccsr_clk_cluster_group __iomem *clk_grp[2] = {
30 (void *)(CONFIG_SYS_FSL_CH3_CLK_GRPA_ADDR),
31 (void *)(CONFIG_SYS_FSL_CH3_CLK_GRPB_ADDR)
33 struct ccsr_clk_ctrl __iomem *clk_ctrl =
34 (void *)(CONFIG_SYS_FSL_CH3_CLK_CTRL_ADDR);
36 const u8 core_cplx_pll[16] = {
37 [0] = 0, /* CC1 PPL / 1 */
38 [1] = 0, /* CC1 PPL / 2 */
39 [2] = 0, /* CC1 PPL / 4 */
40 [4] = 1, /* CC2 PPL / 1 */
41 [5] = 1, /* CC2 PPL / 2 */
42 [6] = 1, /* CC2 PPL / 4 */
43 [8] = 2, /* CC3 PPL / 1 */
44 [9] = 2, /* CC3 PPL / 2 */
45 [10] = 2, /* CC3 PPL / 4 */
46 [12] = 3, /* CC4 PPL / 1 */
47 [13] = 3, /* CC4 PPL / 2 */
48 [14] = 3, /* CC4 PPL / 4 */
51 const u8 core_cplx_pll_div[16] = {
52 [0] = 1, /* CC1 PPL / 1 */
53 [1] = 2, /* CC1 PPL / 2 */
54 [2] = 4, /* CC1 PPL / 4 */
55 [4] = 1, /* CC2 PPL / 1 */
56 [5] = 2, /* CC2 PPL / 2 */
57 [6] = 4, /* CC2 PPL / 4 */
58 [8] = 1, /* CC3 PPL / 1 */
59 [9] = 2, /* CC3 PPL / 2 */
60 [10] = 4, /* CC3 PPL / 4 */
61 [12] = 1, /* CC4 PPL / 1 */
62 [13] = 2, /* CC4 PPL / 2 */
63 [14] = 4, /* CC4 PPL / 4 */
67 #if defined(CONFIG_ARCH_LS1028A) || defined(CONFIG_ARCH_LS1088A)
70 uint freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS];
71 uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
72 unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
73 int cc_group[12] = CONFIG_SYS_FSL_CLUSTER_CLOCKS;
74 u32 c_pll_sel, cplx_pll;
77 sys_info->freq_systembus = sysclk;
78 #ifdef CONFIG_DDR_CLK_FREQ
79 sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
80 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
81 sys_info->freq_ddrbus2 = CONFIG_DDR_CLK_FREQ;
84 sys_info->freq_ddrbus = sysclk;
85 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
86 sys_info->freq_ddrbus2 = sysclk;
90 /* The freq_systembus is used to record frequency of platform PLL */
91 sys_info->freq_systembus *= (gur_in32(&gur->rcwsr[0]) >>
92 FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_SHIFT) &
93 FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_MASK;
94 sys_info->freq_ddrbus *= (gur_in32(&gur->rcwsr[0]) >>
95 FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_SHIFT) &
96 FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_MASK;
97 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
98 if (soc_has_dp_ddr()) {
99 sys_info->freq_ddrbus2 *= (gur_in32(&gur->rcwsr[0]) >>
100 FSL_CHASSIS3_RCWSR0_MEM2_PLL_RAT_SHIFT) &
101 FSL_CHASSIS3_RCWSR0_MEM2_PLL_RAT_MASK;
103 sys_info->freq_ddrbus2 = 0;
107 for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) {
109 * fixme: prefer to combine the following into one line, but
110 * cannot pass compiling without warning about in_le32.
112 offset = (void *)((size_t)clk_grp[i/3] +
113 offsetof(struct ccsr_clk_cluster_group,
115 ratio[i] = (in_le32(offset) >> 1) & 0x3f;
116 freq_c_pll[i] = sysclk * ratio[i];
119 for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
120 cluster = fsl_qoriq_core_to_cluster(cpu);
121 c_pll_sel = (in_le32(&clk_ctrl->clkcncsr[cluster].csr) >> 27)
123 cplx_pll = core_cplx_pll[c_pll_sel];
124 cplx_pll += cc_group[cluster] - 1;
125 sys_info->freq_processor[cpu] =
126 freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
129 #if defined(CONFIG_FSL_IFC)
130 sys_info->freq_localbus = sys_info->freq_systembus /
131 CONFIG_SYS_FSL_IFC_CLK_DIV;
134 #if defined(CONFIG_ARCH_LS1028A) || defined(CONFIG_ARCH_LS1088A)
135 #define HWA_CGA_M2_CLK_SEL 0x00380000
136 #define HWA_CGA_M2_CLK_SHIFT 19
137 rcw_tmp = in_le32(&gur->rcwsr[5]);
138 switch ((rcw_tmp & HWA_CGA_M2_CLK_SEL) >> HWA_CGA_M2_CLK_SHIFT) {
140 sys_info->freq_cga_m2 = freq_c_pll[1];
143 sys_info->freq_cga_m2 = freq_c_pll[1] / 2;
146 sys_info->freq_cga_m2 = freq_c_pll[1] / 3;
149 sys_info->freq_cga_m2 = freq_c_pll[1] / 4;
152 sys_info->freq_cga_m2 = freq_c_pll[0] / 2;
155 sys_info->freq_cga_m2 = freq_c_pll[0] / 3;
158 printf("Error: Unknown peripheral clock select!\n");
162 #if defined(CONFIG_ARCH_LX2160A) || defined(CONFIG_ARCH_LS2080A)
163 sys_info->freq_cga_m2 = sys_info->freq_systembus;
169 struct sys_info sys_info;
170 get_sys_info(&sys_info);
171 gd->cpu_clk = sys_info.freq_processor[0];
172 gd->bus_clk = sys_info.freq_systembus / CONFIG_SYS_FSL_PCLK_DIV;
173 gd->mem_clk = sys_info.freq_ddrbus;
174 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
175 gd->arch.mem2_clk = sys_info.freq_ddrbus2;
177 #if defined(CONFIG_FSL_ESDHC)
178 #if defined(CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK)
179 #if defined(CONFIG_ARCH_LS1028A) || defined(CONFIG_ARCH_LX2160A)
180 gd->arch.sdhc_clk = sys_info.freq_cga_m2 / 2;
182 #if defined(CONFIG_ARCH_LS2080A) || defined(CONFIG_ARCH_LS1088A)
183 gd->arch.sdhc_clk = sys_info.freq_cga_m2;
186 gd->arch.sdhc_clk = gd->bus_clk / CONFIG_SYS_FSL_SDHC_CLK_DIV;
188 #endif /* defined(CONFIG_FSL_ESDHC) */
190 if (gd->cpu_clk != 0)
196 /********************************************
198 * return platform clock in Hz
199 *********************************************/
200 ulong get_bus_freq(ulong dummy)
208 /********************************************
210 * return ddr bus freq in Hz
211 *********************************************/
212 ulong get_ddr_freq(ulong ctrl_num)
218 * DDR controller 0 & 1 are on memory complex 0
219 * DDR controller 2 is on memory complext 1
221 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
223 return gd->arch.mem2_clk;
229 int get_i2c_freq(ulong dummy)
231 return get_bus_freq(0) / CONFIG_SYS_FSL_I2C_CLK_DIV;
234 int get_dspi_freq(ulong dummy)
236 return get_bus_freq(0) / CONFIG_SYS_FSL_DSPI_CLK_DIV;
239 int get_serial_clock(void)
241 return get_bus_freq(0) / CONFIG_SYS_FSL_DUART_CLK_DIV;
244 unsigned int mxc_get_clock(enum mxc_clock clk)
248 return get_i2c_freq(0);
250 return get_dspi_freq(0);
252 printf("Unsupported clock\n");