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nyx: Add alternate power saving modes
T210: By default max power savings is enabled. By changing `newpowersave=` to 0, it reverts to the old behavior of smaller power savings. This was added to mitigate some strange DRAM chips, hanging from constant frequency change of a 800 MHz - 1600 MHz back and forth. T210B01: Defaults to a simple loop with no power savings. That's because of untrained ram.
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parent
c13eabcde8
commit
cf175fc00d
4 changed files with 40 additions and 7 deletions
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@ -64,6 +64,7 @@ void set_nyx_default_configuration()
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n_cfg.verification = 1;
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n_cfg.ums_emmc_rw = 0;
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n_cfg.jc_disable = 0;
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n_cfg.new_powersave = 1;
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}
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int create_config_entry()
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@ -205,6 +206,9 @@ int create_nyx_config_entry()
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f_puts("\njcdisable=", &fp);
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itoa(n_cfg.jc_disable, lbuf, 10);
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f_puts(lbuf, &fp);
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f_puts("\nnewpowersave=", &fp);
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itoa(n_cfg.new_powersave, lbuf, 10);
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f_puts(lbuf, &fp);
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f_puts("\n", &fp);
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f_close(&fp);
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@ -51,6 +51,7 @@ typedef struct _nyx_config
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u32 verification;
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u32 ums_emmc_rw;
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u32 jc_disable;
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u32 new_powersave;
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} nyx_config;
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void set_default_configuration();
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@ -2235,6 +2235,30 @@ static void _nyx_main_menu(lv_theme_t * th)
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}
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}
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static void _nyx_gui_loop_powersave_ram()
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{
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// Saves 280 mW.
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while (true)
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{
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minerva_change_freq(FREQ_1600); // Takes 295 us.
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lv_task_handler();
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minerva_change_freq(FREQ_800); // Takes 80 us.
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}
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}
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static void _nyx_gui_loop_powersave_cpu()
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{
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// Saves 75 mW.
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while (true)
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{
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lv_task_handler();
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bpmp_usleep(HALT_COP_MAX_CNT); // Takes 200 us.
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}
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}
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void nyx_load_and_run()
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{
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memset(&system_tasks, 0, sizeof(system_maintenance_tasks_t));
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@ -2293,13 +2317,15 @@ void nyx_load_and_run()
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lv_task_once(task_run_sd_errors);
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}
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while (true)
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// Gui loop.
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if (h_cfg.t210b01)
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{
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minerva_change_freq(FREQ_1600); // Takes 295us.
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lv_task_handler();
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minerva_change_freq(FREQ_800); // Takes 80us. Saves 280mW.
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//bpmp_usleep(HALT_COP_MAX_CNT); // Taskes 200us. Saves 75mW.
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// Minerva not supported on T210B01 yet. No power saving.
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while (true)
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lv_task_handler();
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}
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else if (n_cfg.new_powersave)
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_nyx_gui_loop_powersave_ram(); // Alternate DRAM frequencies. Higher power savings.
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else
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_nyx_gui_loop_powersave_cpu(); // Suspend CPU. Lower power savings.
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}
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@ -280,6 +280,8 @@ void load_saved_configuration()
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n_cfg.ums_emmc_rw = atoi(kv->val) == 1;
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else if (!strcmp("jcdisable", kv->key))
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n_cfg.jc_disable = atoi(kv->val) == 1;
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else if (!strcmp("newpowersave", kv->key))
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n_cfg.new_powersave = atoi(kv->val) == 1;
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}
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break;
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