Could you explain me how you add frequencis to your kernel? I have a tegra
2 phone but I don't understand how to add new frequencies
El viernes, 3 de mayo de 2013 13:03:25 UTC-3, Giveen escribió:
>
> Here is an example of implimenting overclocking in the Tegra kernel from
> the kernel I work with.
> static struct clk_pll_freq_table tegra_pll_x_freq_table[] = { **
> + /* 1.7 GHz */ **+ { 12000000, 1700000000, 800, 6, 1, 12}, **
> + { 13000000, 1700000000, 985, 8, 1, 12}, **
> + { 19200000, 1700000000, 1000, 12, 1, 8}, **
> + { 26000000, 1700000000, 800, 13, 1, 12}, **+ **+ /* 1.6 GHz */ **
> + { 12000000, 1600000000, 800, 6, 1, 12}, **
> + { 13000000, 1600000000, 985, 8, 1, 12}, **
> + { 19200000, 1600000000, 1000, 12, 1, 8}, **
> + { 26000000, 1600000000, 800, 13, 1, 12}, **+ **+ /* 1.504 GHz */ *
> *+ { 12000000, 1504000000, 752, 6, 1, 12}, **
> + { 13000000, 1504000000, 926, 8, 1, 12}, **
> + { 19200000, 1504000000, 940, 12, 1, 8}, **
> + { 26000000, 1504000000, 752, 13, 1, 12}, **+ **+ /* 1.4 GHz */ **
> + { 12000000, 1400000000, 700, 6, 1, 12}, **
> + { 13000000, 1400000000, 969, 9, 1, 12}, **
> + { 19200000, 1400000000, 875, 12, 1, 8}, **
> + { 26000000, 1400000000, 700, 13, 1, 12}, **+ ** /* 1.2 GHz */ **
> { 12000000, 1200000000, 600, 6, 1, 12}, **
> { 13000000, 1200000000, 923, 10, 1, 12},
>
>
> On Fri, May 3, 2013 at 9:22 AM, Michał Nykiel <mich...@gmail.com<javascript:>
> > wrote:
>
>> Do you mean remove db8500_prcmu_has_arm_maxopp() condition?
>>
>>
>> 2013/5/3 Jeremy Morales <ajaxx...@gmail.com <javascript:>>
>>
>>> I would say that it probably could run at 1ghz after you fixed the
>>> kernel.
>>>
>>>
>>> On Fri, May 3, 2013 at 8:50 AM, cnyk <mich...@gmail.com <javascript:>>wrote:
>>>
>>>> Hi,
>>>> I'm asking about Samsung GT-I8160 phone. It has NovaThor U8500 chipset
>>>> and should run at 1GHz CPU speed but it's limited by Samsung to 800MHz.
>>>> I've compared kernels source code with GT-I9070 and GT-I8190 (they have
>>>> same chipset but 1GHz) and that's what I found:
>>>>
>>>> All three devices have the same frequency table declared in
>>>> /arch/arm/mach-ux500/devices-db8500.c file and for all three devices max
>>>> frequency there is 800MHz.
>>>>
>>>> static struct cpufreq_frequency_table db8500_freq_table[] = {
>>>> [0] = {
>>>> .index = 0,
>>>> .frequency = 200000,
>>>> },
>>>> [1] = {
>>>> .index = 1,
>>>> .frequency = 400000,
>>>> },
>>>> [2] = {
>>>> .index = 2,
>>>> .frequency = 800000,
>>>> },
>>>> #if defined(CONFIG_MACH_GAVINI)
>>>> [3] = {
>>>> /* Used for MAX_OPP, if available */
>>>> .index = 3,
>>>> .frequency = 1000000,
>>>> },
>>>> #else
>>>> [3] = {
>>>> .index = 3,
>>>> .frequency = CPUFREQ_TABLE_END,
>>>> },
>>>> #endif
>>>> [4] = {
>>>> .index = 4,
>>>> .frequency = CPUFREQ_TABLE_END,
>>>> },};struct platform_device db8500_prcmu_device = {
>>>> .name = "db8500-prcmu",
>>>> .dev = {
>>>> .platform_data = db8500_freq_table,
>>>> },};
>>>>
>>>>
>>>> The frequency table is modified by PRCMU driver
>>>>
>>>> /* /drivers/mfd/db8500-prcmu.c */
>>>> static void db8500_prcmu_update_freq(void *pdata){
>>>> freq_table =
>>>> (struct cpufreq_frequency_table *)pdata;
>>>> if (!db8500_prcmu_has_arm_maxopp())
>>>> return;
>>>> switch (fw_info.version.project) {
>>>> case PRCMU_FW_PROJECT_U8500:
>>>> case PRCMU_FW_PROJECT_U9500:
>>>> case PRCMU_FW_PROJECT_U8420:
>>>> case PRCMU_FW_PROJECT_U8420_SYSCLK:
>>>> case PRCMU_FW_PROJECT_A9420:
>>>> case PRCMU_FW_PROJECT_U8500_MBL:
>>>> freq_table[3].frequency = 1000000;
>>>> break;
>>>> case PRCMU_FW_PROJECT_U8500_C2:
>>>> case PRCMU_FW_PROJECT_U8520:
>>>> freq_table[3].frequency = 1150000;
>>>> break;
>>>> default:
>>>> break;
>>>> }}
>>>>
>>>>
>>>> Unfortunately, db8500_prcmu_has_arm_maxopp function on my device returns
>>>> false.
>>>>
>>>>
>>>>
>>>> /* Index of different voltages to be used when accessing AVSData */#define
>>>> PRCM_AVS_BASE 0x2FC#define PRCM_AVS_VARM_MAX_OPP
>>>> (PRCM_AVS_BASE + 0x4)
>>>> static bool db8500_prcmu_has_arm_maxopp(void){
>>>> return (readb(tcdm_base + PRCM_AVS_VARM_MAX_OPP) &
>>>> PRCM_AVS_ISMODEENABLE_MASK) == PRCM_AVS_ISMODEENABLE_MASK;}
>>>>
>>>> So, does it mean that it's hardware limit or software? Is there any
>>>> chance to set CPU frequency to 1GHz?
>>>> Greetings, Michal.
>>>>
>>>>
>>>>
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