PTP, CPUfreq, Hotplug

[akku1139]

unsigned *target_atag_devinfo_data(unsigned *ptr)
{
  int i = 0;
  *ptr++ = tag_size(tag_devinfo_data);
  *ptr++ = ATAG_DEVINFO_DATA;
  for (i=0;i<ATAG_DEVINFO_DATA_SIZE;i++){
    *ptr++ = get_devinfo_with_index(i);  
  }
  *ptr++ = ATAG_DEVINFO_DATA_SIZE;
  printf("SSSS:0x%x\n", get_devinfo_with_index(3));
  printf("SSSS:0x%x\n", get_devinfo_with_index(4));
  printf("SSSS:0x%x\n", get_devinfo_with_index(5));
  printf("SSSS:0x%x\n", get_devinfo_with_index(10));
  return ptr;
}

https://github.com/TeamYogaBlade2/android_kernel_lenovo_b8000-new/blob/b40d442dd1fdd2f9a6eca77077adb871374487d4/mediatek/platform/mt6589/lk/atags.c#L139-L153

static int __init parse_tag_devinfo_data_fixup(const struct tag *tags)
{
    int i=0;
    int size = tags->u.devinfo_data.devinfo_data_size;


    for (i=0;i<size;i++){
        g_devinfo_data[i] = tags->u.devinfo_data.devinfo_data[i];
    }
    /* print chip id for debugging purpose */
    printk("tag_devinfo_data_rid, indx[%d]:0x%x\n", 12,g_devinfo_data[12]);
    printk("tag_devinfo_data size:%d\n", size);
    g_devinfo_data_size = size;
	return 0;
}

https://github.com/TeamYogaBlade2/android_kernel_lenovo_b8000-new/blob/b40d442dd1fdd2f9a6eca77077adb871374487d4/mediatek/platform/mt6589/kernel/core/mt_devs.c#L1104-L1117

/**************************************************************************
 *  GET devinfo info with index
 **************************************************************************/
u32 get_devinfo_with_index(u32 index)
{
    int size = (sizeof(g_devinfo_data)/sizeof(u32));
    if ((index >= 0) && (index < size)){
        return g_devinfo_data[index];
    }else{
        printk("devinfo data index out of range:%d\n", index);    
        printk("devinfo data size:%d\n", size);    
        return SBCHK_BASE_INDEX_OUT_OF_RANGE;
    }
}

https://github.com/TeamYogaBlade2/android_kernel_lenovo_b8000-new/blob/b40d442dd1fdd2f9a6eca77077adb871374487d4/mediatek/platform/mt6589/kernel/core/sbchk_base.c#L348-L361

u32 PTP_get_ptp_level(void)
{
    #if defined (CONFIG_MTK_FORCE_CPU_89T)
        return 3; // 1.5GHz
    #else
        u32 ptp_level_temp;


        ptp_level_temp = get_devinfo_with_index(3) & 0x7;


        if( ptp_level_temp == 0 ) // free mode
        {
            return ((get_devinfo_with_index(10) >> 4) & 0x7);
        }
        else if( ptp_level_temp == 1 ) // 1.5GHz
        {
            return 3;
        }
        else if( ptp_level_temp == 2 ) // 1.4GHz
        {
            return 2;
        }
        else if( ptp_level_temp == 3 ) // 1.3GHz
        {
            return 1;
        }
        else if( ptp_level_temp == 4 ) // 1.2GHz
        {
            return 0;
        }
        else if( ptp_level_temp == 5 ) // 1.1GHz
        {
            return 8;
        }
        else if( ptp_level_temp == 6 ) // 1.0GHz
        {
            return 9;
        }
        else  // 1.0GHz
        {
            return 10;
        }
    #endif
}

https://github.com/TeamYogaBlade2/android_kernel_lenovo_b8000-new/blob/b40d442dd1fdd2f9a6eca77077adb871374487d4/mediatek/platform/mt6589/kernel/core/mt_ptp.c#L1086-L1128

/***************************
* Operate Point Definition
****************************/
#define OP(khz, volt)       \
{                           \
    .cpufreq_khz = khz,     \
    .cpufreq_volt = volt,   \
}

struct mt_cpu_freq_info
{
    unsigned int cpufreq_khz;
    unsigned int cpufreq_volt;
};

struct mt_cpu_power_info
{
    unsigned int cpufreq_khz;
    unsigned int cpufreq_ncpu;
    unsigned int cpufreq_power;
};

/***************************
* MT6589 E1 DVFS Table
****************************/
static struct mt_cpu_freq_info mt6589_freqs_e1[] = {
    OP(DVFS_F1, DVFS_V1),
    OP(DVFS_F2, DVFS_V2),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

static struct mt_cpu_freq_info mt6589_freqs_e1_0[] = {
    OP(DVFS_F0_0, DVFS_V0),
    OP(DVFS_F1, DVFS_V1),
    OP(DVFS_F2, DVFS_V2),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

static struct mt_cpu_freq_info mt6589_freqs_e1_1[] = {
    OP(DVFS_F0_1, DVFS_V0),
    OP(DVFS_F1, DVFS_V1),
    OP(DVFS_F2, DVFS_V2),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

static struct mt_cpu_freq_info mt6589_freqs_e1_2[] = {
    OP(DVFS_F0_2, DVFS_V0),
    OP(DVFS_F1, DVFS_V1),
    OP(DVFS_F2, DVFS_V2),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

static struct mt_cpu_freq_info mt6589_freqs_e1_3[] = {
    OP(DVFS_F0_3, DVFS_V0),
    OP(DVFS_F1, DVFS_V1),
    OP(DVFS_F2, DVFS_V2),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

static struct mt_cpu_freq_info mt6589_freqs_e1_4[] = {
    OP(DVFS_F0_4, DVFS_V0),
    OP(DVFS_F1, DVFS_V1),
    OP(DVFS_F2, DVFS_V2),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

static struct mt_cpu_freq_info mt6589_freqs_e1_5[] = {
    OP(DVFS_F2, DVFS_V1),
    OP(DVFS_F3, DVFS_V3),
    OP(DVFS_F4, DVFS_V4),
};

https://github.com/TeamYogaBlade2/android_kernel_lenovo_b8000-new/blob/b40d442dd1fdd2f9a6eca77077adb871374487d4/mediatek/platform/mt6589/kernel/core/mt_cpufreq.c#L139-L220

[akku1139]

#18 (comment)

[akku1139]

https://github.com/bq/aquaris-5/blob/bc1d0d0e/mediatek/platform/mt6589/kernel/core/mt_boot.c#L120-L123

https://deepwiki.com/search/mt6589efuse-efuse-0x10009000-0_51695299-4a41-4f4f-b215-938a51ed7c63?mode=fast

[akku1139]

/*********************
* Clock Mux Register
**********************/
#define TOP_CKMUXSEL    (0xF0001000)
#define TOP_CKDIV1      (0xF0001008)

https://github.com/bq/aquaris-5/blob/bc1d0d0e35c969670e2d869001be944ad0c9c5e5/mediatek/platform/mt6589/kernel/core/include/mach/mt_cpufreq.h#L6-L11

[akku1139]

CKDIV1
https://android.googlesource.com/kernel/mediatek/+/android-mtk-3.18/drivers/misc/mediatek/base/power/mt8173/mt_cpufreq.c

[akku1139]

hotplug done
64a049a
https://chat.deepseek.com/share/d95ufypbazmvkw9tpw