| /* |
| * Marvell EBU clock core handling defined at reset |
| * |
| * Copyright (C) 2012 Marvell |
| * |
| * Gregory CLEMENT <gregory.clement@free-electrons.com> |
| * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> |
| * |
| * This file is licensed under the terms of the GNU General Public |
| * License version 2. This program is licensed "as is" without any |
| * warranty of any kind, whether express or implied. |
| */ |
| #include <linux/kernel.h> |
| #include <linux/clk.h> |
| #include <linux/clkdev.h> |
| #include <linux/clk-provider.h> |
| #include <linux/of_address.h> |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include "clk-core.h" |
| |
| struct core_ratio { |
| int id; |
| const char *name; |
| }; |
| |
| struct core_clocks { |
| u32 (*get_tclk_freq)(void __iomem *sar); |
| u32 (*get_cpu_freq)(void __iomem *sar); |
| void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div); |
| const struct core_ratio *ratios; |
| int num_ratios; |
| }; |
| |
| static struct clk_onecell_data clk_data; |
| |
| static void __init mvebu_clk_core_setup(struct device_node *np, |
| struct core_clocks *coreclk) |
| { |
| const char *tclk_name = "tclk"; |
| const char *cpuclk_name = "cpuclk"; |
| void __iomem *base; |
| unsigned long rate; |
| int n; |
| |
| base = of_iomap(np, 0); |
| if (WARN_ON(!base)) |
| return; |
| |
| /* |
| * Allocate struct for TCLK, cpu clk, and core ratio clocks |
| */ |
| clk_data.clk_num = 2 + coreclk->num_ratios; |
| clk_data.clks = kzalloc(clk_data.clk_num * sizeof(struct clk *), |
| GFP_KERNEL); |
| if (WARN_ON(!clk_data.clks)) |
| return; |
| |
| /* |
| * Register TCLK |
| */ |
| of_property_read_string_index(np, "clock-output-names", 0, |
| &tclk_name); |
| rate = coreclk->get_tclk_freq(base); |
| clk_data.clks[0] = clk_register_fixed_rate(NULL, tclk_name, NULL, |
| CLK_IS_ROOT, rate); |
| WARN_ON(IS_ERR(clk_data.clks[0])); |
| |
| /* |
| * Register CPU clock |
| */ |
| of_property_read_string_index(np, "clock-output-names", 1, |
| &cpuclk_name); |
| rate = coreclk->get_cpu_freq(base); |
| clk_data.clks[1] = clk_register_fixed_rate(NULL, cpuclk_name, NULL, |
| CLK_IS_ROOT, rate); |
| WARN_ON(IS_ERR(clk_data.clks[1])); |
| |
| /* |
| * Register fixed-factor clocks derived from CPU clock |
| */ |
| for (n = 0; n < coreclk->num_ratios; n++) { |
| const char *rclk_name = coreclk->ratios[n].name; |
| int mult, div; |
| |
| of_property_read_string_index(np, "clock-output-names", |
| 2+n, &rclk_name); |
| coreclk->get_clk_ratio(base, coreclk->ratios[n].id, |
| &mult, &div); |
| clk_data.clks[2+n] = clk_register_fixed_factor(NULL, rclk_name, |
| cpuclk_name, 0, mult, div); |
| WARN_ON(IS_ERR(clk_data.clks[2+n])); |
| }; |
| |
| /* |
| * SAR register isn't needed anymore |
| */ |
| iounmap(base); |
| |
| of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); |
| } |
| |
| #ifdef CONFIG_MACH_ARMADA_370_XP |
| /* |
| * Armada 370/XP Sample At Reset is a 64 bit bitfiled split in two |
| * register of 32 bits |
| */ |
| |
| #define SARL 0 /* Low part [0:31] */ |
| #define SARL_AXP_PCLK_FREQ_OPT 21 |
| #define SARL_AXP_PCLK_FREQ_OPT_MASK 0x7 |
| #define SARL_A370_PCLK_FREQ_OPT 11 |
| #define SARL_A370_PCLK_FREQ_OPT_MASK 0xF |
| #define SARL_AXP_FAB_FREQ_OPT 24 |
| #define SARL_AXP_FAB_FREQ_OPT_MASK 0xF |
| #define SARL_A370_FAB_FREQ_OPT 15 |
| #define SARL_A370_FAB_FREQ_OPT_MASK 0x1F |
| #define SARL_A370_TCLK_FREQ_OPT 20 |
| #define SARL_A370_TCLK_FREQ_OPT_MASK 0x1 |
| #define SARH 4 /* High part [32:63] */ |
| #define SARH_AXP_PCLK_FREQ_OPT (52-32) |
| #define SARH_AXP_PCLK_FREQ_OPT_MASK 0x1 |
| #define SARH_AXP_PCLK_FREQ_OPT_SHIFT 3 |
| #define SARH_AXP_FAB_FREQ_OPT (51-32) |
| #define SARH_AXP_FAB_FREQ_OPT_MASK 0x1 |
| #define SARH_AXP_FAB_FREQ_OPT_SHIFT 4 |
| |
| static const u32 __initconst armada_370_tclk_frequencies[] = { |
| 16600000, |
| 20000000, |
| }; |
| |
| static u32 __init armada_370_get_tclk_freq(void __iomem *sar) |
| { |
| u8 tclk_freq_select = 0; |
| |
| tclk_freq_select = ((readl(sar) >> SARL_A370_TCLK_FREQ_OPT) & |
| SARL_A370_TCLK_FREQ_OPT_MASK); |
| return armada_370_tclk_frequencies[tclk_freq_select]; |
| } |
| |
| static const u32 __initconst armada_370_cpu_frequencies[] = { |
| 400000000, |
| 533000000, |
| 667000000, |
| 800000000, |
| 1000000000, |
| 1067000000, |
| 1200000000, |
| }; |
| |
| static u32 __init armada_370_get_cpu_freq(void __iomem *sar) |
| { |
| u32 cpu_freq; |
| u8 cpu_freq_select = 0; |
| |
| cpu_freq_select = ((readl(sar) >> SARL_A370_PCLK_FREQ_OPT) & |
| SARL_A370_PCLK_FREQ_OPT_MASK); |
| if (cpu_freq_select > ARRAY_SIZE(armada_370_cpu_frequencies)) { |
| pr_err("CPU freq select unsuported %d\n", cpu_freq_select); |
| cpu_freq = 0; |
| } else |
| cpu_freq = armada_370_cpu_frequencies[cpu_freq_select]; |
| |
| return cpu_freq; |
| } |
| |
| enum { A370_XP_NBCLK, A370_XP_HCLK, A370_XP_DRAMCLK }; |
| |
| static const struct core_ratio __initconst armada_370_xp_core_ratios[] = { |
| { .id = A370_XP_NBCLK, .name = "nbclk" }, |
| { .id = A370_XP_HCLK, .name = "hclk" }, |
| { .id = A370_XP_DRAMCLK, .name = "dramclk" }, |
| }; |
| |
| static const int __initconst armada_370_xp_nbclk_ratios[32][2] = { |
| {0, 1}, {1, 2}, {2, 2}, {2, 2}, |
| {1, 2}, {1, 2}, {1, 1}, {2, 3}, |
| {0, 1}, {1, 2}, {2, 4}, {0, 1}, |
| {1, 2}, {0, 1}, {0, 1}, {2, 2}, |
| {0, 1}, {0, 1}, {0, 1}, {1, 1}, |
| {2, 3}, {0, 1}, {0, 1}, {0, 1}, |
| {0, 1}, {0, 1}, {0, 1}, {1, 1}, |
| {0, 1}, {0, 1}, {0, 1}, {0, 1}, |
| }; |
| |
| static const int __initconst armada_370_xp_hclk_ratios[32][2] = { |
| {0, 1}, {1, 2}, {2, 6}, {2, 3}, |
| {1, 3}, {1, 4}, {1, 2}, {2, 6}, |
| {0, 1}, {1, 6}, {2, 10}, {0, 1}, |
| {1, 4}, {0, 1}, {0, 1}, {2, 5}, |
| {0, 1}, {0, 1}, {0, 1}, {1, 2}, |
| {2, 6}, {0, 1}, {0, 1}, {0, 1}, |
| {0, 1}, {0, 1}, {0, 1}, {1, 1}, |
| {0, 1}, {0, 1}, {0, 1}, {0, 1}, |
| }; |
| |
| static const int __initconst armada_370_xp_dramclk_ratios[32][2] = { |
| {0, 1}, {1, 2}, {2, 3}, {2, 3}, |
| {1, 3}, {1, 2}, {1, 2}, {2, 6}, |
| {0, 1}, {1, 3}, {2, 5}, {0, 1}, |
| {1, 4}, {0, 1}, {0, 1}, {2, 5}, |
| {0, 1}, {0, 1}, {0, 1}, {1, 1}, |
| {2, 3}, {0, 1}, {0, 1}, {0, 1}, |
| {0, 1}, {0, 1}, {0, 1}, {1, 1}, |
| {0, 1}, {0, 1}, {0, 1}, {0, 1}, |
| }; |
| |
| static void __init armada_370_xp_get_clk_ratio(u32 opt, |
| void __iomem *sar, int id, int *mult, int *div) |
| { |
| switch (id) { |
| case A370_XP_NBCLK: |
| *mult = armada_370_xp_nbclk_ratios[opt][0]; |
| *div = armada_370_xp_nbclk_ratios[opt][1]; |
| break; |
| case A370_XP_HCLK: |
| *mult = armada_370_xp_hclk_ratios[opt][0]; |
| *div = armada_370_xp_hclk_ratios[opt][1]; |
| break; |
| case A370_XP_DRAMCLK: |
| *mult = armada_370_xp_dramclk_ratios[opt][0]; |
| *div = armada_370_xp_dramclk_ratios[opt][1]; |
| break; |
| } |
| } |
| |
| static void __init armada_370_get_clk_ratio( |
| void __iomem *sar, int id, int *mult, int *div) |
| { |
| u32 opt = ((readl(sar) >> SARL_A370_FAB_FREQ_OPT) & |
| SARL_A370_FAB_FREQ_OPT_MASK); |
| |
| armada_370_xp_get_clk_ratio(opt, sar, id, mult, div); |
| } |
| |
| |
| static const struct core_clocks armada_370_core_clocks = { |
| .get_tclk_freq = armada_370_get_tclk_freq, |
| .get_cpu_freq = armada_370_get_cpu_freq, |
| .get_clk_ratio = armada_370_get_clk_ratio, |
| .ratios = armada_370_xp_core_ratios, |
| .num_ratios = ARRAY_SIZE(armada_370_xp_core_ratios), |
| }; |
| |
| static const u32 __initconst armada_xp_cpu_frequencies[] = { |
| 1000000000, |
| 1066000000, |
| 1200000000, |
| 1333000000, |
| 1500000000, |
| 1666000000, |
| 1800000000, |
| 2000000000, |
| 667000000, |
| 0, |
| 800000000, |
| 1600000000, |
| }; |
| |
| /* For Armada XP TCLK frequency is fix: 250MHz */ |
| static u32 __init armada_xp_get_tclk_freq(void __iomem *sar) |
| { |
| return 250 * 1000 * 1000; |
| } |
| |
| static u32 __init armada_xp_get_cpu_freq(void __iomem *sar) |
| { |
| u32 cpu_freq; |
| u8 cpu_freq_select = 0; |
| |
| cpu_freq_select = ((readl(sar) >> SARL_AXP_PCLK_FREQ_OPT) & |
| SARL_AXP_PCLK_FREQ_OPT_MASK); |
| /* |
| * The upper bit is not contiguous to the other ones and |
| * located in the high part of the SAR registers |
| */ |
| cpu_freq_select |= (((readl(sar+4) >> SARH_AXP_PCLK_FREQ_OPT) & |
| SARH_AXP_PCLK_FREQ_OPT_MASK) |
| << SARH_AXP_PCLK_FREQ_OPT_SHIFT); |
| if (cpu_freq_select > ARRAY_SIZE(armada_xp_cpu_frequencies)) { |
| pr_err("CPU freq select unsuported: %d\n", cpu_freq_select); |
| cpu_freq = 0; |
| } else |
| cpu_freq = armada_xp_cpu_frequencies[cpu_freq_select]; |
| |
| return cpu_freq; |
| } |
| |
| static void __init armada_xp_get_clk_ratio( |
| void __iomem *sar, int id, int *mult, int *div) |
| { |
| |
| u32 opt = ((readl(sar) >> SARL_AXP_FAB_FREQ_OPT) & |
| SARL_AXP_FAB_FREQ_OPT_MASK); |
| /* |
| * The upper bit is not contiguous to the other ones and |
| * located in the high part of the SAR registers |
| */ |
| opt |= (((readl(sar+4) >> SARH_AXP_FAB_FREQ_OPT) & |
| SARH_AXP_FAB_FREQ_OPT_MASK) |
| << SARH_AXP_FAB_FREQ_OPT_SHIFT); |
| |
| armada_370_xp_get_clk_ratio(opt, sar, id, mult, div); |
| } |
| |
| static const struct core_clocks armada_xp_core_clocks = { |
| .get_tclk_freq = armada_xp_get_tclk_freq, |
| .get_cpu_freq = armada_xp_get_cpu_freq, |
| .get_clk_ratio = armada_xp_get_clk_ratio, |
| .ratios = armada_370_xp_core_ratios, |
| .num_ratios = ARRAY_SIZE(armada_370_xp_core_ratios), |
| }; |
| |
| #endif /* CONFIG_MACH_ARMADA_370_XP */ |
| |
| /* |
| * Dove PLL sample-at-reset configuration |
| * |
| * SAR0[8:5] : CPU frequency |
| * 5 = 1000 MHz |
| * 6 = 933 MHz |
| * 7 = 933 MHz |
| * 8 = 800 MHz |
| * 9 = 800 MHz |
| * 10 = 800 MHz |
| * 11 = 1067 MHz |
| * 12 = 667 MHz |
| * 13 = 533 MHz |
| * 14 = 400 MHz |
| * 15 = 333 MHz |
| * others reserved. |
| * |
| * SAR0[11:9] : CPU to L2 Clock divider ratio |
| * 0 = (1/1) * CPU |
| * 2 = (1/2) * CPU |
| * 4 = (1/3) * CPU |
| * 6 = (1/4) * CPU |
| * others reserved. |
| * |
| * SAR0[15:12] : CPU to DDR DRAM Clock divider ratio |
| * 0 = (1/1) * CPU |
| * 2 = (1/2) * CPU |
| * 3 = (2/5) * CPU |
| * 4 = (1/3) * CPU |
| * 6 = (1/4) * CPU |
| * 8 = (1/5) * CPU |
| * 10 = (1/6) * CPU |
| * 12 = (1/7) * CPU |
| * 14 = (1/8) * CPU |
| * 15 = (1/10) * CPU |
| * others reserved. |
| * |
| * SAR0[24:23] : TCLK frequency |
| * 0 = 166 MHz |
| * 1 = 125 MHz |
| * others reserved. |
| */ |
| #ifdef CONFIG_ARCH_DOVE |
| #define SAR_DOVE_CPU_FREQ 5 |
| #define SAR_DOVE_CPU_FREQ_MASK 0xf |
| #define SAR_DOVE_L2_RATIO 9 |
| #define SAR_DOVE_L2_RATIO_MASK 0x7 |
| #define SAR_DOVE_DDR_RATIO 12 |
| #define SAR_DOVE_DDR_RATIO_MASK 0xf |
| #define SAR_DOVE_TCLK_FREQ 23 |
| #define SAR_DOVE_TCLK_FREQ_MASK 0x3 |
| |
| static const u32 __initconst dove_tclk_frequencies[] = { |
| 166666667, |
| 125000000, |
| 0, 0 |
| }; |
| |
| static u32 __init dove_get_tclk_freq(void __iomem *sar) |
| { |
| u32 opt = (readl(sar) >> SAR_DOVE_TCLK_FREQ) & |
| SAR_DOVE_TCLK_FREQ_MASK; |
| return dove_tclk_frequencies[opt]; |
| } |
| |
| static const u32 __initconst dove_cpu_frequencies[] = { |
| 0, 0, 0, 0, 0, |
| 1000000000, |
| 933333333, 933333333, |
| 800000000, 800000000, 800000000, |
| 1066666667, |
| 666666667, |
| 533333333, |
| 400000000, |
| 333333333 |
| }; |
| |
| static u32 __init dove_get_cpu_freq(void __iomem *sar) |
| { |
| u32 opt = (readl(sar) >> SAR_DOVE_CPU_FREQ) & |
| SAR_DOVE_CPU_FREQ_MASK; |
| return dove_cpu_frequencies[opt]; |
| } |
| |
| enum { DOVE_CPU_TO_L2, DOVE_CPU_TO_DDR }; |
| |
| static const struct core_ratio __initconst dove_core_ratios[] = { |
| { .id = DOVE_CPU_TO_L2, .name = "l2clk", }, |
| { .id = DOVE_CPU_TO_DDR, .name = "ddrclk", } |
| }; |
| |
| static const int __initconst dove_cpu_l2_ratios[8][2] = { |
| { 1, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 }, |
| { 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 } |
| }; |
| |
| static const int __initconst dove_cpu_ddr_ratios[16][2] = { |
| { 1, 1 }, { 0, 1 }, { 1, 2 }, { 2, 5 }, |
| { 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 }, |
| { 1, 5 }, { 0, 1 }, { 1, 6 }, { 0, 1 }, |
| { 1, 7 }, { 0, 1 }, { 1, 8 }, { 1, 10 } |
| }; |
| |
| static void __init dove_get_clk_ratio( |
| void __iomem *sar, int id, int *mult, int *div) |
| { |
| switch (id) { |
| case DOVE_CPU_TO_L2: |
| { |
| u32 opt = (readl(sar) >> SAR_DOVE_L2_RATIO) & |
| SAR_DOVE_L2_RATIO_MASK; |
| *mult = dove_cpu_l2_ratios[opt][0]; |
| *div = dove_cpu_l2_ratios[opt][1]; |
| break; |
| } |
| case DOVE_CPU_TO_DDR: |
| { |
| u32 opt = (readl(sar) >> SAR_DOVE_DDR_RATIO) & |
| SAR_DOVE_DDR_RATIO_MASK; |
| *mult = dove_cpu_ddr_ratios[opt][0]; |
| *div = dove_cpu_ddr_ratios[opt][1]; |
| break; |
| } |
| } |
| } |
| |
| static const struct core_clocks dove_core_clocks = { |
| .get_tclk_freq = dove_get_tclk_freq, |
| .get_cpu_freq = dove_get_cpu_freq, |
| .get_clk_ratio = dove_get_clk_ratio, |
| .ratios = dove_core_ratios, |
| .num_ratios = ARRAY_SIZE(dove_core_ratios), |
| }; |
| #endif /* CONFIG_ARCH_DOVE */ |
| |
| /* |
| * Kirkwood PLL sample-at-reset configuration |
| * (6180 has different SAR layout than other Kirkwood SoCs) |
| * |
| * SAR0[4:3,22,1] : CPU frequency (6281,6292,6282) |
| * 4 = 600 MHz |
| * 6 = 800 MHz |
| * 7 = 1000 MHz |
| * 9 = 1200 MHz |
| * 12 = 1500 MHz |
| * 13 = 1600 MHz |
| * 14 = 1800 MHz |
| * 15 = 2000 MHz |
| * others reserved. |
| * |
| * SAR0[19,10:9] : CPU to L2 Clock divider ratio (6281,6292,6282) |
| * 1 = (1/2) * CPU |
| * 3 = (1/3) * CPU |
| * 5 = (1/4) * CPU |
| * others reserved. |
| * |
| * SAR0[8:5] : CPU to DDR DRAM Clock divider ratio (6281,6292,6282) |
| * 2 = (1/2) * CPU |
| * 4 = (1/3) * CPU |
| * 6 = (1/4) * CPU |
| * 7 = (2/9) * CPU |
| * 8 = (1/5) * CPU |
| * 9 = (1/6) * CPU |
| * others reserved. |
| * |
| * SAR0[4:2] : Kirkwood 6180 cpu/l2/ddr clock configuration (6180 only) |
| * 5 = [CPU = 600 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/3) * CPU] |
| * 6 = [CPU = 800 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/4) * CPU] |
| * 7 = [CPU = 1000 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/5) * CPU] |
| * others reserved. |
| * |
| * SAR0[21] : TCLK frequency |
| * 0 = 200 MHz |
| * 1 = 166 MHz |
| * others reserved. |
| */ |
| #ifdef CONFIG_ARCH_KIRKWOOD |
| #define SAR_KIRKWOOD_CPU_FREQ(x) \ |
| (((x & (1 << 1)) >> 1) | \ |
| ((x & (1 << 22)) >> 21) | \ |
| ((x & (3 << 3)) >> 1)) |
| #define SAR_KIRKWOOD_L2_RATIO(x) \ |
| (((x & (3 << 9)) >> 9) | \ |
| (((x & (1 << 19)) >> 17))) |
| #define SAR_KIRKWOOD_DDR_RATIO 5 |
| #define SAR_KIRKWOOD_DDR_RATIO_MASK 0xf |
| #define SAR_MV88F6180_CLK 2 |
| #define SAR_MV88F6180_CLK_MASK 0x7 |
| #define SAR_KIRKWOOD_TCLK_FREQ 21 |
| #define SAR_KIRKWOOD_TCLK_FREQ_MASK 0x1 |
| |
| enum { KIRKWOOD_CPU_TO_L2, KIRKWOOD_CPU_TO_DDR }; |
| |
| static const struct core_ratio __initconst kirkwood_core_ratios[] = { |
| { .id = KIRKWOOD_CPU_TO_L2, .name = "l2clk", }, |
| { .id = KIRKWOOD_CPU_TO_DDR, .name = "ddrclk", } |
| }; |
| |
| static u32 __init kirkwood_get_tclk_freq(void __iomem *sar) |
| { |
| u32 opt = (readl(sar) >> SAR_KIRKWOOD_TCLK_FREQ) & |
| SAR_KIRKWOOD_TCLK_FREQ_MASK; |
| return (opt) ? 166666667 : 200000000; |
| } |
| |
| static const u32 __initconst kirkwood_cpu_frequencies[] = { |
| 0, 0, 0, 0, |
| 600000000, |
| 0, |
| 800000000, |
| 1000000000, |
| 0, |
| 1200000000, |
| 0, 0, |
| 1500000000, |
| 1600000000, |
| 1800000000, |
| 2000000000 |
| }; |
| |
| static u32 __init kirkwood_get_cpu_freq(void __iomem *sar) |
| { |
| u32 opt = SAR_KIRKWOOD_CPU_FREQ(readl(sar)); |
| return kirkwood_cpu_frequencies[opt]; |
| } |
| |
| static const int __initconst kirkwood_cpu_l2_ratios[8][2] = { |
| { 0, 1 }, { 1, 2 }, { 0, 1 }, { 1, 3 }, |
| { 0, 1 }, { 1, 4 }, { 0, 1 }, { 0, 1 } |
| }; |
| |
| static const int __initconst kirkwood_cpu_ddr_ratios[16][2] = { |
| { 0, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 }, |
| { 1, 3 }, { 0, 1 }, { 1, 4 }, { 2, 9 }, |
| { 1, 5 }, { 1, 6 }, { 0, 1 }, { 0, 1 }, |
| { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 } |
| }; |
| |
| static void __init kirkwood_get_clk_ratio( |
| void __iomem *sar, int id, int *mult, int *div) |
| { |
| switch (id) { |
| case KIRKWOOD_CPU_TO_L2: |
| { |
| u32 opt = SAR_KIRKWOOD_L2_RATIO(readl(sar)); |
| *mult = kirkwood_cpu_l2_ratios[opt][0]; |
| *div = kirkwood_cpu_l2_ratios[opt][1]; |
| break; |
| } |
| case KIRKWOOD_CPU_TO_DDR: |
| { |
| u32 opt = (readl(sar) >> SAR_KIRKWOOD_DDR_RATIO) & |
| SAR_KIRKWOOD_DDR_RATIO_MASK; |
| *mult = kirkwood_cpu_ddr_ratios[opt][0]; |
| *div = kirkwood_cpu_ddr_ratios[opt][1]; |
| break; |
| } |
| } |
| } |
| |
| static const struct core_clocks kirkwood_core_clocks = { |
| .get_tclk_freq = kirkwood_get_tclk_freq, |
| .get_cpu_freq = kirkwood_get_cpu_freq, |
| .get_clk_ratio = kirkwood_get_clk_ratio, |
| .ratios = kirkwood_core_ratios, |
| .num_ratios = ARRAY_SIZE(kirkwood_core_ratios), |
| }; |
| |
| static const u32 __initconst mv88f6180_cpu_frequencies[] = { |
| 0, 0, 0, 0, 0, |
| 600000000, |
| 800000000, |
| 1000000000 |
| }; |
| |
| static u32 __init mv88f6180_get_cpu_freq(void __iomem *sar) |
| { |
| u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) & SAR_MV88F6180_CLK_MASK; |
| return mv88f6180_cpu_frequencies[opt]; |
| } |
| |
| static const int __initconst mv88f6180_cpu_ddr_ratios[8][2] = { |
| { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }, |
| { 0, 1 }, { 1, 3 }, { 1, 4 }, { 1, 5 } |
| }; |
| |
| static void __init mv88f6180_get_clk_ratio( |
| void __iomem *sar, int id, int *mult, int *div) |
| { |
| switch (id) { |
| case KIRKWOOD_CPU_TO_L2: |
| { |
| /* mv88f6180 has a fixed 1:2 CPU-to-L2 ratio */ |
| *mult = 1; |
| *div = 2; |
| break; |
| } |
| case KIRKWOOD_CPU_TO_DDR: |
| { |
| u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) & |
| SAR_MV88F6180_CLK_MASK; |
| *mult = mv88f6180_cpu_ddr_ratios[opt][0]; |
| *div = mv88f6180_cpu_ddr_ratios[opt][1]; |
| break; |
| } |
| } |
| } |
| |
| static const struct core_clocks mv88f6180_core_clocks = { |
| .get_tclk_freq = kirkwood_get_tclk_freq, |
| .get_cpu_freq = mv88f6180_get_cpu_freq, |
| .get_clk_ratio = mv88f6180_get_clk_ratio, |
| .ratios = kirkwood_core_ratios, |
| .num_ratios = ARRAY_SIZE(kirkwood_core_ratios), |
| }; |
| #endif /* CONFIG_ARCH_KIRKWOOD */ |
| |
| static const __initdata struct of_device_id clk_core_match[] = { |
| #ifdef CONFIG_MACH_ARMADA_370_XP |
| { |
| .compatible = "marvell,armada-370-core-clock", |
| .data = &armada_370_core_clocks, |
| }, |
| { |
| .compatible = "marvell,armada-xp-core-clock", |
| .data = &armada_xp_core_clocks, |
| }, |
| #endif |
| #ifdef CONFIG_ARCH_DOVE |
| { |
| .compatible = "marvell,dove-core-clock", |
| .data = &dove_core_clocks, |
| }, |
| #endif |
| |
| #ifdef CONFIG_ARCH_KIRKWOOD |
| { |
| .compatible = "marvell,kirkwood-core-clock", |
| .data = &kirkwood_core_clocks, |
| }, |
| { |
| .compatible = "marvell,mv88f6180-core-clock", |
| .data = &mv88f6180_core_clocks, |
| }, |
| #endif |
| |
| { } |
| }; |
| |
| void __init mvebu_core_clk_init(void) |
| { |
| struct device_node *np; |
| |
| for_each_matching_node(np, clk_core_match) { |
| const struct of_device_id *match = |
| of_match_node(clk_core_match, np); |
| mvebu_clk_core_setup(np, (struct core_clocks *)match->data); |
| } |
| } |