.. | .. |
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| 1 | +// SPDX-License-Identifier: GPL-2.0 |
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1 | 2 | /* |
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2 | 3 | * Marvell Armada AP806 System Controller |
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3 | 4 | * |
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.. | .. |
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5 | 6 | * |
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6 | 7 | * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> |
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7 | 8 | * |
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8 | | - * This file is licensed under the terms of the GNU General Public |
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9 | | - * License version 2. This program is licensed "as is" without any |
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10 | | - * warranty of any kind, whether express or implied. |
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11 | 9 | */ |
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12 | 10 | |
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13 | 11 | #define pr_fmt(fmt) "ap806-system-controller: " fmt |
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14 | 12 | |
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| 13 | +#include "armada_ap_cp_helper.h" |
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15 | 14 | #include <linux/clk-provider.h> |
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16 | 15 | #include <linux/mfd/syscon.h> |
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17 | 16 | #include <linux/init.h> |
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18 | 17 | #include <linux/of.h> |
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19 | | -#include <linux/of_address.h> |
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20 | 18 | #include <linux/platform_device.h> |
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21 | 19 | #include <linux/regmap.h> |
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22 | 20 | |
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23 | 21 | #define AP806_SAR_REG 0x400 |
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24 | 22 | #define AP806_SAR_CLKFREQ_MODE_MASK 0x1f |
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25 | 23 | |
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26 | | -#define AP806_CLK_NUM 5 |
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| 24 | +#define AP806_CLK_NUM 6 |
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27 | 25 | |
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28 | 26 | static struct clk *ap806_clks[AP806_CLK_NUM]; |
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29 | 27 | |
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.. | .. |
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32 | 30 | .clk_num = AP806_CLK_NUM, |
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33 | 31 | }; |
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34 | 32 | |
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35 | | -static char *ap806_unique_name(struct device *dev, struct device_node *np, |
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36 | | - char *name) |
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| 33 | +static int ap806_get_sar_clocks(unsigned int freq_mode, |
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| 34 | + unsigned int *cpuclk_freq, |
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| 35 | + unsigned int *dclk_freq) |
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37 | 36 | { |
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38 | | - const __be32 *reg; |
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39 | | - u64 addr; |
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| 37 | + switch (freq_mode) { |
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| 38 | + case 0x0: |
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| 39 | + *cpuclk_freq = 2000; |
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| 40 | + *dclk_freq = 600; |
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| 41 | + break; |
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| 42 | + case 0x1: |
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| 43 | + *cpuclk_freq = 2000; |
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| 44 | + *dclk_freq = 525; |
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| 45 | + break; |
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| 46 | + case 0x6: |
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| 47 | + *cpuclk_freq = 1800; |
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| 48 | + *dclk_freq = 600; |
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| 49 | + break; |
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| 50 | + case 0x7: |
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| 51 | + *cpuclk_freq = 1800; |
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| 52 | + *dclk_freq = 525; |
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| 53 | + break; |
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| 54 | + case 0x4: |
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| 55 | + *cpuclk_freq = 1600; |
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| 56 | + *dclk_freq = 400; |
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| 57 | + break; |
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| 58 | + case 0xB: |
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| 59 | + *cpuclk_freq = 1600; |
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| 60 | + *dclk_freq = 450; |
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| 61 | + break; |
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| 62 | + case 0xD: |
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| 63 | + *cpuclk_freq = 1600; |
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| 64 | + *dclk_freq = 525; |
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| 65 | + break; |
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| 66 | + case 0x1a: |
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| 67 | + *cpuclk_freq = 1400; |
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| 68 | + *dclk_freq = 400; |
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| 69 | + break; |
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| 70 | + case 0x14: |
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| 71 | + *cpuclk_freq = 1300; |
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| 72 | + *dclk_freq = 400; |
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| 73 | + break; |
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| 74 | + case 0x17: |
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| 75 | + *cpuclk_freq = 1300; |
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| 76 | + *dclk_freq = 325; |
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| 77 | + break; |
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| 78 | + case 0x19: |
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| 79 | + *cpuclk_freq = 1200; |
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| 80 | + *dclk_freq = 400; |
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| 81 | + break; |
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| 82 | + case 0x13: |
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| 83 | + *cpuclk_freq = 1000; |
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| 84 | + *dclk_freq = 325; |
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| 85 | + break; |
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| 86 | + case 0x1d: |
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| 87 | + *cpuclk_freq = 1000; |
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| 88 | + *dclk_freq = 400; |
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| 89 | + break; |
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| 90 | + case 0x1c: |
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| 91 | + *cpuclk_freq = 800; |
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| 92 | + *dclk_freq = 400; |
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| 93 | + break; |
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| 94 | + case 0x1b: |
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| 95 | + *cpuclk_freq = 600; |
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| 96 | + *dclk_freq = 400; |
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| 97 | + break; |
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| 98 | + default: |
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| 99 | + return -EINVAL; |
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| 100 | + } |
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40 | 101 | |
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41 | | - reg = of_get_property(np, "reg", NULL); |
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42 | | - addr = of_translate_address(np, reg); |
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43 | | - return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s", |
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44 | | - (unsigned long long)addr, name); |
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| 102 | + return 0; |
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| 103 | +} |
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| 104 | + |
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| 105 | +static int ap807_get_sar_clocks(unsigned int freq_mode, |
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| 106 | + unsigned int *cpuclk_freq, |
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| 107 | + unsigned int *dclk_freq) |
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| 108 | +{ |
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| 109 | + switch (freq_mode) { |
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| 110 | + case 0x0: |
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| 111 | + *cpuclk_freq = 2000; |
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| 112 | + *dclk_freq = 1200; |
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| 113 | + break; |
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| 114 | + case 0x6: |
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| 115 | + *cpuclk_freq = 2200; |
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| 116 | + *dclk_freq = 1200; |
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| 117 | + break; |
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| 118 | + case 0xD: |
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| 119 | + *cpuclk_freq = 1600; |
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| 120 | + *dclk_freq = 1200; |
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| 121 | + break; |
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| 122 | + default: |
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| 123 | + return -EINVAL; |
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| 124 | + } |
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| 125 | + |
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| 126 | + return 0; |
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45 | 127 | } |
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46 | 128 | |
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47 | 129 | static int ap806_syscon_common_probe(struct platform_device *pdev, |
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48 | 130 | struct device_node *syscon_node) |
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49 | 131 | { |
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50 | | - unsigned int freq_mode, cpuclk_freq; |
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| 132 | + unsigned int freq_mode, cpuclk_freq, dclk_freq; |
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51 | 133 | const char *name, *fixedclk_name; |
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52 | 134 | struct device *dev = &pdev->dev; |
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53 | 135 | struct device_node *np = dev->of_node; |
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.. | .. |
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68 | 150 | } |
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69 | 151 | |
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70 | 152 | freq_mode = reg & AP806_SAR_CLKFREQ_MODE_MASK; |
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71 | | - switch (freq_mode) { |
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72 | | - case 0x0: |
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73 | | - case 0x1: |
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74 | | - cpuclk_freq = 2000; |
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75 | | - break; |
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76 | | - case 0x6: |
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77 | | - case 0x7: |
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78 | | - cpuclk_freq = 1800; |
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79 | | - break; |
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80 | | - case 0x4: |
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81 | | - case 0xB: |
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82 | | - case 0xD: |
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83 | | - cpuclk_freq = 1600; |
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84 | | - break; |
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85 | | - case 0x1a: |
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86 | | - cpuclk_freq = 1400; |
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87 | | - break; |
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88 | | - case 0x14: |
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89 | | - case 0x17: |
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90 | | - cpuclk_freq = 1300; |
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91 | | - break; |
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92 | | - case 0x19: |
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93 | | - cpuclk_freq = 1200; |
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94 | | - break; |
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95 | | - case 0x13: |
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96 | | - case 0x1d: |
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97 | | - cpuclk_freq = 1000; |
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98 | | - break; |
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99 | | - case 0x1c: |
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100 | | - cpuclk_freq = 800; |
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101 | | - break; |
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102 | | - case 0x1b: |
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103 | | - cpuclk_freq = 600; |
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104 | | - break; |
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105 | | - default: |
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106 | | - dev_err(dev, "invalid SAR value\n"); |
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| 153 | + |
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| 154 | + if (of_device_is_compatible(pdev->dev.of_node, |
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| 155 | + "marvell,ap806-clock")) { |
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| 156 | + ret = ap806_get_sar_clocks(freq_mode, &cpuclk_freq, &dclk_freq); |
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| 157 | + } else if (of_device_is_compatible(pdev->dev.of_node, |
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| 158 | + "marvell,ap807-clock")) { |
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| 159 | + ret = ap807_get_sar_clocks(freq_mode, &cpuclk_freq, &dclk_freq); |
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| 160 | + } else { |
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| 161 | + dev_err(dev, "compatible not supported\n"); |
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107 | 162 | return -EINVAL; |
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| 163 | + } |
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| 164 | + |
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| 165 | + if (ret) { |
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| 166 | + dev_err(dev, "invalid Sample at Reset value\n"); |
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| 167 | + return ret; |
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108 | 168 | } |
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109 | 169 | |
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110 | 170 | /* Convert to hertz */ |
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111 | 171 | cpuclk_freq *= 1000 * 1000; |
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| 172 | + dclk_freq *= 1000 * 1000; |
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112 | 173 | |
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113 | 174 | /* CPU clocks depend on the Sample At Reset configuration */ |
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114 | | - name = ap806_unique_name(dev, syscon_node, "cpu-cluster-0"); |
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| 175 | + name = ap_cp_unique_name(dev, syscon_node, "pll-cluster-0"); |
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115 | 176 | ap806_clks[0] = clk_register_fixed_rate(dev, name, NULL, |
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116 | 177 | 0, cpuclk_freq); |
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117 | 178 | if (IS_ERR(ap806_clks[0])) { |
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.. | .. |
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119 | 180 | goto fail0; |
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120 | 181 | } |
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121 | 182 | |
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122 | | - name = ap806_unique_name(dev, syscon_node, "cpu-cluster-1"); |
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| 183 | + name = ap_cp_unique_name(dev, syscon_node, "pll-cluster-1"); |
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123 | 184 | ap806_clks[1] = clk_register_fixed_rate(dev, name, NULL, 0, |
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124 | 185 | cpuclk_freq); |
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125 | 186 | if (IS_ERR(ap806_clks[1])) { |
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.. | .. |
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128 | 189 | } |
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129 | 190 | |
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130 | 191 | /* Fixed clock is always 1200 Mhz */ |
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131 | | - fixedclk_name = ap806_unique_name(dev, syscon_node, "fixed"); |
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| 192 | + fixedclk_name = ap_cp_unique_name(dev, syscon_node, "fixed"); |
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132 | 193 | ap806_clks[2] = clk_register_fixed_rate(dev, fixedclk_name, NULL, |
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133 | 194 | 0, 1200 * 1000 * 1000); |
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134 | 195 | if (IS_ERR(ap806_clks[2])) { |
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.. | .. |
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137 | 198 | } |
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138 | 199 | |
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139 | 200 | /* MSS Clock is fixed clock divided by 6 */ |
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140 | | - name = ap806_unique_name(dev, syscon_node, "mss"); |
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| 201 | + name = ap_cp_unique_name(dev, syscon_node, "mss"); |
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141 | 202 | ap806_clks[3] = clk_register_fixed_factor(NULL, name, fixedclk_name, |
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142 | 203 | 0, 1, 6); |
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143 | 204 | if (IS_ERR(ap806_clks[3])) { |
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.. | .. |
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146 | 207 | } |
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147 | 208 | |
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148 | 209 | /* SDIO(/eMMC) Clock is fixed clock divided by 3 */ |
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149 | | - name = ap806_unique_name(dev, syscon_node, "sdio"); |
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| 210 | + name = ap_cp_unique_name(dev, syscon_node, "sdio"); |
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150 | 211 | ap806_clks[4] = clk_register_fixed_factor(NULL, name, |
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151 | 212 | fixedclk_name, |
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152 | 213 | 0, 1, 3); |
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.. | .. |
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155 | 216 | goto fail4; |
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156 | 217 | } |
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157 | 218 | |
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158 | | - of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data); |
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| 219 | + /* AP-DCLK(HCLK) Clock is DDR clock divided by 2 */ |
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| 220 | + name = ap_cp_unique_name(dev, syscon_node, "ap-dclk"); |
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| 221 | + ap806_clks[5] = clk_register_fixed_rate(dev, name, NULL, 0, dclk_freq); |
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| 222 | + if (IS_ERR(ap806_clks[5])) { |
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| 223 | + ret = PTR_ERR(ap806_clks[5]); |
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| 224 | + goto fail5; |
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| 225 | + } |
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| 226 | + |
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159 | 227 | ret = of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data); |
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160 | 228 | if (ret) |
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161 | 229 | goto fail_clk_add; |
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.. | .. |
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163 | 231 | return 0; |
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164 | 232 | |
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165 | 233 | fail_clk_add: |
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| 234 | + clk_unregister_fixed_factor(ap806_clks[5]); |
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| 235 | +fail5: |
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166 | 236 | clk_unregister_fixed_factor(ap806_clks[4]); |
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167 | 237 | fail4: |
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168 | 238 | clk_unregister_fixed_factor(ap806_clks[3]); |
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.. | .. |
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209 | 279 | |
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210 | 280 | static const struct of_device_id ap806_clock_of_match[] = { |
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211 | 281 | { .compatible = "marvell,ap806-clock", }, |
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| 282 | + { .compatible = "marvell,ap807-clock", }, |
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212 | 283 | { } |
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213 | 284 | }; |
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214 | 285 | |
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