diff --git a/keyboards/10bleoledhub/config.h b/keyboards/10bleoledhub/config.h
index d5ec736436..87716c6273 100644
--- a/keyboards/10bleoledhub/config.h
+++ b/keyboards/10bleoledhub/config.h
@@ -16,8 +16,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.*/
 
 #pragma once
 
-#define SSD1306OLED
-
 #define RGBLIGHT_EFFECT_BREATHING
 #define RGBLIGHT_EFFECT_RAINBOW_MOOD
 #define RGBLIGHT_EFFECT_RAINBOW_SWIRL
diff --git a/keyboards/crkbd/keymaps/crkqwes/config.h b/keyboards/crkbd/keymaps/crkqwes/config.h
index 5be6a0449b..b2209c7e6d 100644
--- a/keyboards/crkbd/keymaps/crkqwes/config.h
+++ b/keyboards/crkbd/keymaps/crkqwes/config.h
@@ -28,9 +28,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define MASTER_RIGHT
 // #define EE_HANDS
 
-// #define SSD1306OLED
 #undef USE_I2C
-#undef SSD1306OLED
 
 #define QUICK_TAP_TERM 0
 #define TAPPING_TERM 200
diff --git a/keyboards/crkbd/keymaps/hvp/keymap.c b/keyboards/crkbd/keymaps/hvp/keymap.c
index 7e1953e34d..fc57fc1bb0 100644
--- a/keyboards/crkbd/keymaps/hvp/keymap.c
+++ b/keyboards/crkbd/keymaps/hvp/keymap.c
@@ -1,9 +1,5 @@
 #include QMK_KEYBOARD_H
 #include "hvp.c"
-#ifdef SSD1306OLED
-#    include "ssd1306.h"
-#    include <string.h>
-#endif
 
 #ifdef RGBLIGHT_ENABLE
 //Following line allows macro to read current RGB settings
diff --git a/keyboards/crkbd/keymaps/markstos/config.h b/keyboards/crkbd/keymaps/markstos/config.h
index 24101724de..0a3d7a360c 100644
--- a/keyboards/crkbd/keymaps/markstos/config.h
+++ b/keyboards/crkbd/keymaps/markstos/config.h
@@ -16,9 +16,6 @@ This is the C configuration file for the keymap
 #define MASTER_RIGHT
 // #define EE_HANDS
 
-//#define SSD1306OLED
-
-
 // By default, when holding a dual-function key shortly after tapping it, the
 // tapped key will begin repeating. This is handy for fast typists when typing
 // words with double letters, such as "happy". If you turn this setting ON, it
diff --git a/keyboards/helix/rev2/keymaps/default/keymap.c b/keyboards/helix/rev2/keymaps/default/keymap.c
index 25b0c3dff8..b777d35d45 100644
--- a/keyboards/helix/rev2/keymaps/default/keymap.c
+++ b/keyboards/helix/rev2/keymaps/default/keymap.c
@@ -340,10 +340,6 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   return true;
 }
 
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-
 void matrix_init_user(void) {
     #ifdef AUDIO_ENABLE
         startup_user();
@@ -351,10 +347,6 @@ void matrix_init_user(void) {
     #ifdef RGBLIGHT_ENABLE
       RGB_current_mode = rgblight_get_mode();
     #endif
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
 }
 
 
diff --git a/keyboards/helix/rev2/keymaps/default/oled_display.c b/keyboards/helix/rev2/keymaps/default/oled_display.c
index 384356bd14..4eb815ce48 100644
--- a/keyboards/helix/rev2/keymaps/default/oled_display.c
+++ b/keyboards/helix/rev2/keymaps/default/oled_display.c
@@ -136,150 +136,3 @@ bool oled_task_user(void) {
     return false;
 }
 #endif // end of OLED_ENABLE
-
-//SSD1306 OLED update loop
-/*
-    The following code is left as a sample to help you transition from SSD1306OLED to OLED_ENABLE.
-
-    * `matrix_write(matrix, data)` is replaced by `oled_write(data, false)`.
-    * `matrix_write_P(matrix, data)` is replaced by `oled_write_P(data, false)`.
-    * It is no longer necessary to call `iota_gfx_task()`.
-    * `matrix_update()` are no longer needed.
-    * `iota_gfx_task_user()` is no longer needed. Instead, `bool oled_task_user(void)` is provided.
-
-    以下のコードは、SSD1306OLED から OLED_ENABLE に移行する助けになるようにサンプルとして残してあります。
-
-    * `matrix_write(matrix, data)` は、`oled_write(data, false)` に書き換えます。
-    * `matrix_write_P(matrix, data)` は、`oled_write_P(data, false)` に書き換えます。
-    * `iota_gfx_task()` を呼び出す必要はなくなります。
-    * `matrix_update()` は不要になります。
-    * `iota_gfx_task_user()` は不要になります。代りに `bool oled_task_user(void)` を用意します。
- */
-
-#ifdef SSD1306OLED
-#include "ssd1306.h"
-#define oled_write(data,flag)    matrix_write(matrix, data)
-#define oled_write_P(data,flag)  matrix_write_P(matrix, data)
-
-void matrix_scan_user(void) {
-    iota_gfx_task();  // this is what updates the display continuously
-}
-
-void matrix_update(struct CharacterMatrix *dest,
-                   const struct CharacterMatrix *source) {
-    if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-        memcpy(dest->display, source->display, sizeof(dest->display));
-        dest->dirty = true;
-    }
-}
-
-static void render_logo(struct CharacterMatrix *matrix) {
-
-    static const char helix_logo[] PROGMEM ={
-        0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
-        0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
-        0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
-        0};
-    oled_write_P(helix_logo, false);
-}
-
-static void render_rgbled_status(bool full, struct CharacterMatrix *matrix) {
-#    ifdef RGBLIGHT_ENABLE
-    char buf[30];
-    if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
-        if (full) {
-            snprintf(buf, sizeof(buf), " LED %2d: %d,%d,%d ",
-                     rgblight_get_mode(),
-                     rgblight_get_hue()/RGBLIGHT_HUE_STEP,
-                     rgblight_get_sat()/RGBLIGHT_SAT_STEP,
-                     rgblight_get_val()/RGBLIGHT_VAL_STEP);
-        } else {
-            snprintf(buf, sizeof(buf), "[%2d] ", rgblight_get_mode());
-        }
-        oled_write(buf, false);
-    }
-#    endif
-}
-
-static void render_layer_status(struct CharacterMatrix *matrix) {
-  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
-    char buf[10];
-    oled_write_P(PSTR("Layer: "), false);
-    switch (layer_state) {
-    case L_BASE:
-        oled_write_P(PSTR("Default"), false);
-        break;
-    case L_RAISE:
-        oled_write_P(PSTR("Raise"), false);
-        break;
-    case L_LOWER:
-        oled_write_P(PSTR("Lower"), false);
-        break;
-    case L_ADJUST:
-    case L_ADJUST_TRI:
-        oled_write_P(PSTR("Adjust"), false);
-        break;
-    default:
-        oled_write_P(PSTR("Undef-"), false);
-        snprintf(buf,sizeof(buf), "%ld", layer_state);
-        oled_write(buf, false);
-    }
-    oled_write_P(PSTR("\n"), false);
-}
-
-void render_status(struct CharacterMatrix *matrix) {
-  // Render to mode icon
-    static const char os_logo[][2][3] PROGMEM = {{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
-    if (is_mac_mode()) {
-        oled_write_P(os_logo[0][0], false);
-        oled_write_P(PSTR("\n"), false);
-        oled_write_P(os_logo[0][1], false);
-    } else {
-        oled_write_P(os_logo[1][0], false);
-        oled_write_P(PSTR("\n"), false);
-        oled_write_P(os_logo[1][1], false);
-    }
-
-    oled_write_P(PSTR(" "), false);
-    render_layer_status(matrix);
-
-    // Host Keyboard LED Status
-    led_t led_state = host_keyboard_led_state();
-    oled_write_P(led_state.num_lock ? PSTR("NUMLOCK") : PSTR("       "), false);
-    oled_write_P(led_state.caps_lock ? PSTR("CAPS") : PSTR("    "), false);
-    oled_write_P(led_state.scroll_lock ? PSTR("SCLK") : PSTR("    "), false);
-    oled_write_P(PSTR("\n"), false);
-    render_rgbled_status(true, matrix);
-}
-
-#    if OLED_UPDATE_INTERVAL > 0
-uint16_t oled_update_timeout;
-#    endif
-
-void iota_gfx_task_user(void) {
-    struct CharacterMatrix matrix;
-
-#    if DEBUG_TO_SCREEN
-    if (debug_enable) {
-        return;
-    }
-#    endif
-
-#    if OLED_UPDATE_INTERVAL > 0
-    if (timer_elapsed(oled_update_timeout) < OLED_UPDATE_INTERVAL) {
-        return;
-    }
-    oled_update_timeout = timer_read();
-#    endif
-    matrix_clear(&matrix);
-    if (is_keyboard_master()) {
-        render_status(&matrix);
-    } else {
-        render_logo(&matrix);
-        render_rgbled_status(false, &matrix);
-        render_layer_status(&matrix);
-    }
-    matrix_update(&display, &matrix);
-}
-
-#endif // end of SSD1306OLED
diff --git a/keyboards/helix/rev2/keymaps/five_rows_jis/keymap.c b/keyboards/helix/rev2/keymaps/five_rows_jis/keymap.c
index ff7b174f5b..75e50968bc 100644
--- a/keyboards/helix/rev2/keymaps/five_rows_jis/keymap.c
+++ b/keyboards/helix/rev2/keymaps/five_rows_jis/keymap.c
@@ -2,9 +2,6 @@
 #include "keymap_japanese.h"
 #include <stdio.h>
 #include <string.h>
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 // * If you want to recognize that you pressed the Adjust key with the Lower / Raise key you can enable this comment out. However, the binary size may be over. *
 // #define ADJUST_MACRO_ENABLE
@@ -192,7 +189,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     ),
 };
 
-#if defined(SSD1306OLED) || defined(OLED_ENABLE)
+#if defined(OLED_ENABLE)
 char keylog[24] = {};
 const char code_to_name[60] = {
     ' ', ' ', ' ', ' ', 'a', 'b', 'c', 'd', 'e', 'f',
@@ -249,7 +246,7 @@ void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
 #endif
 
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  #if defined(SSD1306OLED) || defined(OLED_ENABLE)
+  #if defined(OLED_ENABLE)
     if (record->event.pressed) {
       set_keylog(keycode, record);
     }
@@ -310,121 +307,8 @@ void matrix_init_user(void) {
   #ifdef RGBLIGHT_ENABLE
     RGB_current_mode = rgblight_get_mode();
   #endif
-  //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-  #ifdef SSD1306OLED
-    iota_gfx_init(!has_usb()); // turns on the display
-  #endif
 }
 
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-void matrix_scan_user(void) {
-  iota_gfx_task();  // this is what updates the display continuously
-}
-
-static inline void matrix_update(struct CharacterMatrix *dest,
-                          const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-//assign the right code to your layers for OLED display
-#define L_BASE _BASE
-#define L_LOWER (1<<_LOWER)
-#define L_RAISE (1<<_RAISE)
-#define L_ADJUST (1<<_ADJUST)
-#define L_ADJUST_TRI (L_ADJUST|L_RAISE|L_LOWER)
-#define L_LOW_E (1<<_LOW_E)
-#define L_RAI_E (1<<_RAI_E)
-#define L_ADJUST_TRIE (L_ADJUST|L_RAI_E|L_LOW_E)
-
-const char helix_logo[]={
-  0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
-  0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
-  0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
-  0};
-
-static inline void render_logo(struct CharacterMatrix *matrix) {
-
-  matrix_write(matrix, helix_logo);
-}
-
-const char mac_win_logo[][2][3]={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
-
-static inline void render_status(struct CharacterMatrix *matrix) {
-
-  char buf[20];
-  // Render to mode icon
-  if(keymap_config.swap_lalt_lgui==false){
-    matrix_write(matrix, mac_win_logo[0][0]);
-    matrix_write_P(matrix, PSTR("\n"));
-    matrix_write(matrix, mac_win_logo[0][1]);
-  } else {
-    matrix_write(matrix, mac_win_logo[1][0]);
-    matrix_write_P(matrix, PSTR("\n"));
-    matrix_write(matrix, mac_win_logo[1][1]);
-  }
-
-  #ifdef RGBLIGHT_ENABLE
-    snprintf(buf, sizeof(buf), "  LED mode:%d", (short)RGB_current_mode);
-    matrix_write(matrix, buf);
-  #endif
-
-  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
-  matrix_write_P(matrix, PSTR("\nLayer: "));
-  switch (layer_state) {
-    case L_BASE:
-      matrix_write_P(matrix, default_layer_state == (1UL<<_BAS_E) ? PSTR("BaseEx") : PSTR("Base"));
-      break;
-    case L_RAISE:
-      matrix_write_P(matrix, PSTR("Raise"));
-      break;
-    case L_RAI_E:
-      matrix_write_P(matrix, PSTR("RaiseEx"));
-      break;
-    case L_LOWER:
-      matrix_write_P(matrix, PSTR("Lower"));
-      break;
-    case L_LOW_E:
-      matrix_write_P(matrix, PSTR("LowerEx"));
-      break;
-    case L_ADJUST:
-    case L_ADJUST_TRI:
-    case L_ADJUST_TRIE:
-      matrix_write_P(matrix, PSTR("Adjust"));
-      break;
-    default:
-      snprintf(buf, sizeof(buf), "%d", (short)layer_state);
-      matrix_write(matrix, buf);
-  }
-
-  matrix_write(matrix, keylog);
-}
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-
-  #if DEBUG_TO_SCREEN
-    if (debug_enable) {
-      return;
-    }
-  #endif
-
-  matrix_clear(&matrix);
-  if (is_keyboard_master()) {
-    render_status(&matrix);
-  } else {
-    render_logo(&matrix);
-  }
-
-  matrix_update(&display, &matrix);
-}
-
-#endif // end of SSD1306OLED
-
 //OLED update loop
 #ifdef OLED_ENABLE
 oled_rotation_t oled_init_user(oled_rotation_t rotation) {
diff --git a/keyboards/helix/rev2/keymaps/froggy/keymap.c b/keyboards/helix/rev2/keymaps/froggy/keymap.c
index c29c5832de..dc047d3118 100644
--- a/keyboards/helix/rev2/keymaps/froggy/keymap.c
+++ b/keyboards/helix/rev2/keymaps/froggy/keymap.c
@@ -4,10 +4,6 @@
 #define MIN(x, y) (((x) < (y)) ? (x) : (y))
 #define MAX(x, y) (((x) > (y)) ? (x) : (y))
 
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-
 #define LAYOUT_half( \
     L00, L01, L02, L03, L04, L05,       \
     L10, L11, L12, L13, L14, L15,       \
@@ -450,10 +446,6 @@ void matrix_init_user(void) {
     #ifdef RGBLIGHT_ENABLE
       RGB_current_mode = rgblight_get_mode();
     #endif
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
 }
 
 
@@ -555,10 +547,6 @@ uint8_t layer_state_old;
 
 //runs every scan cycle (a lot)
 void matrix_scan_user(void) {
-  #ifdef SSD1306OLED
-    iota_gfx_task();  // this is what updates the display continuously
-  #endif
-
   if(delay_key_stat && (timer_elapsed(key_timer) > DELAY_TIME)){
     register_delay_code(_BASE);
     if(!delay_key_pressed){
@@ -629,120 +617,6 @@ void matrix_scan_user(void) {
   #endif
 }
 
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-void matrix_update(struct CharacterMatrix *dest,
-                          const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-// Render to OLED
-void render_status(struct CharacterMatrix *matrix) {
-
-  // froggy logo
-  static char logo[4][1][17]=
-  {
-    {
-      {0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,0}
-    },
-    {
-      {0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,0}
-    },
-    {
-      {0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,0}
-    },
-    {
-      {0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0}
-    }
-  };
-
-  static char indctr[8][2][4]=
-  {
-    // white icon
-    {
-      {0x60,0x61,0x62,0},
-      {0x63,0x64,0}
-    },
-    {
-      {0x80,0x81,0x82,0},
-      {0x83,0x84,0}
-    },
-    {
-      {0xa0,0xa1,0xa2,0},
-      {0xa3,0xa4,0}
-    },
-    {
-      {0xc0,0xc1,0xc2,0},
-      {0xc3,0xc4,0}
-    },
-    // Black icon
-    {
-      {0x75,0x76,0x77,0},
-      {0x78,0x79,0}
-    },
-    {
-      {0x95,0x96,0x97,0},
-      {0x98,0x99,0}
-    },
-    {
-      {0xb5,0xb6,0xb7,0},
-      {0xb8,0xb9,0}
-    },
-    {
-      {0xd5,0xd6,0xd7,0},
-      {0xd8,0xd9,0}
-    },
-  };
-
-  int rown = 0;
-  int rowf = 0;
-  int rowa = 0;
-  int rows = 0;
-
-  //Set Indicator icon
-  led_t led_state = host_keyboard_led_state();
-  if (led_state.num_lock) { rown = 4; } else { rown = 0; }
-  if (led_state.caps_lock) { rowa = 4; } else { rowa = 0; }
-  if (led_state.scroll_lock) { rows = 4; } else { rows = 0; }
-  if (layer_state == L_FUNC) { rowf = 4; }
-
-  matrix_write(matrix, indctr[rown]  [0]);
-  matrix_write(matrix, indctr[rowf]  [1]);
-  matrix_write(matrix, logo  [0]     [0]);
-  matrix_write(matrix, indctr[rown+1][0]);
-  matrix_write(matrix, indctr[rowf+1][1]);
-  matrix_write(matrix, logo  [1]     [0]);
-  matrix_write(matrix, indctr[rowa+2][0]);
-  matrix_write(matrix, indctr[rows+2][1]);
-  matrix_write(matrix, logo  [2]     [0]);
-  matrix_write(matrix, indctr[rowa+3][0]);
-  matrix_write(matrix, indctr[rows+3][1]);
-  matrix_write(matrix, logo  [3]     [0]);
-
-}
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-
-#if DEBUG_TO_SCREEN
-  if (debug_enable) {
-    return;
-  }
-#endif
-
-  matrix_clear(&matrix);
-  if (is_keyboard_master()) {
-    render_status(&matrix);
-  }
-  matrix_update(&display, &matrix);
-}
-
-#endif // end of SSD1306OLED
-
 //OLED update loop
 #ifdef OLED_ENABLE
 
diff --git a/keyboards/helix/rev2/keymaps/froggy_106/keymap.c b/keyboards/helix/rev2/keymaps/froggy_106/keymap.c
index b9c6aa2324..d0a17cb4ae 100644
--- a/keyboards/helix/rev2/keymaps/froggy_106/keymap.c
+++ b/keyboards/helix/rev2/keymaps/froggy_106/keymap.c
@@ -1,9 +1,6 @@
 #include QMK_KEYBOARD_H
 #include "keymap_japanese.h"
 #include <string.h>
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 #define LAYOUT_half( \
     L00, L01, L02, L03, L04, L05,       \
@@ -563,15 +560,6 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   return true;
 }
 
-
-//keyboard start-up code. Runs once when the firmware starts up.
-void matrix_init_user(void) {
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
-}
-
 // LED Effect
 #ifdef RGBLIGHT_ENABLE
 unsigned char rgb[7][5][3];
@@ -632,10 +620,6 @@ layer_state_t layer_state_old;
 
 //runs every scan cycle (a lot)
 void matrix_scan_user(void) {
-  #ifdef SSD1306OLED
-    iota_gfx_task();  // this is what updates the display continuously
-  #endif
-
   if(delay_key_stat && (timer_elapsed(key_timer) > DELAY_TIME)){
     if (IS_MODE_106())
       register_delay_code(_BASE_106);
@@ -693,142 +677,6 @@ void matrix_scan_user(void) {
   #endif
 }
 
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-void matrix_update(struct CharacterMatrix *dest,
-                          const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-// Render to OLED
-void render_status(struct CharacterMatrix *matrix) {
-
-  // froggy logo
-  static char logo[4][17]=
-  {
-    {0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,0},
-    {0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,0},
-    {0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,0},
-    {0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0},
-  };
-  
-  static char modectl[4][2][4]=
-  {
-    {
-      {0x65,0x66,0x67,0}, //WIN
-      {0x85,0x86,0x87,0}, //WIN
-    },
-    {
-      {0xa5,0xa6,0xa7,0}, //US(101)
-      {0xc5,0xc6,0xc7,0}, //US(101)
-    },
-    {
-      {0xbd,0xbe,0xbf,0}, //MAC
-      {0xdd,0xde,0xdf,0}, //MAC
-    },
-    {
-      {0xba,0xbb,0xbc,0}, //JP(106)
-      {0xda,0xdb,0xdc,0}, //JP(106)
-    },
-  };
-  
-  static char indctr[8][2][4]=
-  {
-    // white icon
-    {
-      {0x60,0x61,0x62,0}, //NUM
-      {0x63,0x64,0}       //FUNC
-    },
-    {
-      {0x80,0x81,0x82,0}, //NUM
-      {0x83,0x84,0}       //FUNC
-    },
-    {
-      {0xa0,0xa1,0xa2,0}, //CAPS
-      {0xa3,0xa4,0}       //SCLK
-    },
-    {
-      {0xc0,0xc1,0xc2,0}, //CAPS
-      {0xc3,0xc4,0}       //SCLK
-    },
-    // Black icon
-    {
-      {0x75,0x76,0x77,0}, //NUM
-      {0x78,0x79,0}       //FUNC
-    },
-    {
-      {0x95,0x96,0x97,0}, //NUM
-      {0x98,0x99,0}       //FUNC
-    },
-    {
-      {0xb5,0xb6,0xb7,0}, //CAPS
-      {0xb8,0xb9,0}       //SCLK
-    },
-    {
-     {0xd5,0xd6,0xd7,0}, //CAPS
-     {0xd8,0xd9,0}       //SCLK
-    },
-  };
-
-  int rown = 0;
-  int rowf = 0;
-  int rowa = 0;
-  int rows = 0;
-  int rowm = 0;
-  int rowj = 1;
-
-  //Set Indicator icon
-  led_t led_state = host_keyboard_led_state();
-  if (led_state.num_lock) { rown = 4; }
-  if (led_state.caps_lock) { rowa = 4; }
-  if (led_state.scroll_lock) { rows = 4; }
-  if (IS_LAYER_ON(_FUNC)) { rowf = 4; }
-
-  //Set Mode icon
-  if (IS_MODE_MAC()) { rowm = 2; }
-  if (IS_MODE_106()) { rowj = 3; }
-
-  matrix_write(matrix, indctr[rown]  [0]);
-  matrix_write(matrix, indctr[rowf]  [1]);
-  matrix_write(matrix, modectl[rowm] [0]);
-  matrix_write(matrix, logo[0]);
-  matrix_write(matrix, indctr[rown+1][0]);
-  matrix_write(matrix, indctr[rowf+1][1]);
-  matrix_write(matrix, modectl[rowm] [1]);
-  matrix_write(matrix, logo[1]);
-  matrix_write(matrix, indctr[rowa+2][0]);
-  matrix_write(matrix, indctr[rows+2][1]);
-  matrix_write(matrix, modectl[rowj] [0]);
-  matrix_write(matrix, logo[2]);
-  matrix_write(matrix, indctr[rowa+3][0]);
-  matrix_write(matrix, indctr[rows+3][1]);
-  matrix_write(matrix, modectl[rowj] [1]);
-  matrix_write(matrix, logo[3]);
-
-}
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-
-#if DEBUG_TO_SCREEN
-  if (debug_enable) {
-    return;
-  }
-#endif
-
-  matrix_clear(&matrix);
-  if (is_keyboard_master()) {
-    render_status(&matrix);
-  }
-  matrix_update(&display, &matrix);
-}
-
-#endif // end of SSD1306OLED
-
 //OLED update loop
 #ifdef OLED_ENABLE
 
diff --git a/keyboards/helix/rev2/keymaps/yshrsmz/keymap.c b/keyboards/helix/rev2/keymaps/yshrsmz/keymap.c
index 1fc5dfba99..20fa181d77 100644
--- a/keyboards/helix/rev2/keymaps/yshrsmz/keymap.c
+++ b/keyboards/helix/rev2/keymaps/yshrsmz/keymap.c
@@ -1,9 +1,6 @@
 #include QMK_KEYBOARD_H
 #include <stdio.h>
 #include <string.h>
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 // Each layer gets a name for readability, which is then used in the keymap matrix below.
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
@@ -331,10 +328,6 @@ void matrix_init_user(void) {
     #ifdef RGBLIGHT_ENABLE
       RGB_current_mode = rgblight_get_mode();
     #endif
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
 }
 
 
@@ -363,133 +356,6 @@ void music_scale_user(void)
 
 #endif
 
-
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-void matrix_scan_user(void) {
-     iota_gfx_task();  // this is what updates the display continuously
-}
-
-void matrix_update(struct CharacterMatrix *dest,
-                          const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-//assign the right code to your layers for OLED display
-#define L_BASE 0
-#define L_LOWER (1<<_LOWER)
-#define L_RAISE (1<<_RAISE)
-#define L_ADJUST (1<<_ADJUST)
-#define L_ADJUST_TRI (L_ADJUST|L_RAISE|L_LOWER)
-
-static void render_logo(struct CharacterMatrix *matrix) {
-
-  static const char helix_logo[] PROGMEM ={
-    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
-    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
-    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
-    0};
-  matrix_write_P(matrix, helix_logo);
-  //matrix_write_P(&matrix, PSTR(" Split keyboard kit"));
-}
-
-static void render_rgbled_status(bool full, struct CharacterMatrix *matrix) {
-#ifdef RGBLIGHT_ENABLE
-  char buf[30];
-  if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
-      if (full) {
-          snprintf(buf, sizeof(buf), " LED %2d: %d,%d,%d ",
-                   rgblight_get_mode(),
-                   rgblight_get_hue()/RGBLIGHT_HUE_STEP,
-                   rgblight_get_sat()/RGBLIGHT_SAT_STEP,
-                   rgblight_get_val()/RGBLIGHT_VAL_STEP);
-      } else {
-          snprintf(buf, sizeof(buf), "[%2d] ", rgblight_get_mode());
-      }
-      matrix_write(matrix, buf);
-  }
-#endif
-}
-
-static void render_layer_status(struct CharacterMatrix *matrix) {
-  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
-  char buf[10];
-  matrix_write_P(matrix, PSTR("Layer: "));
-    switch (layer_state) {
-        case L_BASE:
-           matrix_write_P(matrix, PSTR("Default"));
-           break;
-        case L_RAISE:
-           matrix_write_P(matrix, PSTR("Raise"));
-           break;
-        case L_LOWER:
-           matrix_write_P(matrix, PSTR("Lower"));
-           break;
-        case L_ADJUST:
-        case L_ADJUST_TRI:
-           matrix_write_P(matrix, PSTR("Adjust"));
-           break;
-        default:
-           matrix_write_P(matrix, PSTR("Undef-"));
-           snprintf(buf,sizeof(buf), "%ld", layer_state);
-           matrix_write(matrix, buf);
-    }
-}
-
-void render_status(struct CharacterMatrix *matrix) {
-
-  // Render to mode icon
-  static const char os_logo[][2][3] PROGMEM  ={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
-  if(keymap_config.swap_lalt_lgui==false){
-    matrix_write_P(matrix, os_logo[0][0]);
-    matrix_write_P(matrix, PSTR("\n"));
-    matrix_write_P(matrix, os_logo[0][1]);
-  }else{
-    matrix_write_P(matrix, os_logo[1][0]);
-    matrix_write_P(matrix, PSTR("\n"));
-    matrix_write_P(matrix, os_logo[1][1]);
-  }
-
-  matrix_write_P(matrix, PSTR(" "));
-  render_layer_status(matrix);
-  matrix_write_P(matrix, PSTR("\n"));
-
-  // Host Keyboard LED Status
-  led_t led_state = host_keyboard_led_state();
-  matrix_write_P(matrix, led_state.num_lock ? PSTR("NUMLOCK") : PSTR("       "));
-  matrix_write_P(matrix, led_state.caps_lock ? PSTR("CAPS") : PSTR("    "));
-  matrix_write_P(matrix, led_state.scroll_lock ? PSTR("SCLK") : PSTR("    "));
-  matrix_write_P(matrix, PSTR("\n"));
-  render_rgbled_status(true, matrix);
-}
-
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-
-#if DEBUG_TO_SCREEN
-  if (debug_enable) {
-    return;
-  }
-#endif
-
-  matrix_clear(&matrix);
-  if (is_keyboard_master()) {
-    render_status(&matrix);
-  } else {
-    render_logo(&matrix);
-    render_rgbled_status(false, &matrix);
-    render_layer_status(&matrix);
-  }
-  matrix_update(&display, &matrix);
-}
-
-#endif // end of SSD1306OLED
-
 #ifdef OLED_ENABLE
 oled_rotation_t oled_init_user(oled_rotation_t rotation) {
     if (is_keyboard_master()) {
diff --git a/keyboards/latincompass/latinpad/config.h b/keyboards/latincompass/latinpad/config.h
index d68f3b9241..baba2a4a58 100644
--- a/keyboards/latincompass/latinpad/config.h
+++ b/keyboards/latincompass/latinpad/config.h
@@ -16,8 +16,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.*/
 
 #pragma once
 
-#define SSD1306OLED
-
 #define RGB_MATRIX_LED_COUNT 18
 // RGB Matrix Animation modes. Explicitly enabled
 // For full list of effects, see:
diff --git a/keyboards/lily58/keymaps/chuan/config.h b/keyboards/lily58/keymaps/chuan/config.h
index d952ce457b..b3a47769bf 100644
--- a/keyboards/lily58/keymaps/chuan/config.h
+++ b/keyboards/lily58/keymaps/chuan/config.h
@@ -30,8 +30,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define MASTER_RIGHT
 // #define EE_HANDS
 
-// #define SSD1306OLED
-
 #define QUICK_TAP_TERM 0
 
 /* define tapping term */
diff --git a/keyboards/lily58/keymaps/chuan/keymap.c b/keyboards/lily58/keymaps/chuan/keymap.c
index fed5b6df67..58a19ebd5f 100644
--- a/keyboards/lily58/keymaps/chuan/keymap.c
+++ b/keyboards/lily58/keymaps/chuan/keymap.c
@@ -173,13 +173,6 @@ bool oled_task_user(void) {
 #endif //OLED_ENABLE
 
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  if (record->event.pressed) {
-#ifdef SSD1306OLED
-    // set_keylog(keycode, record);
-#endif
-    // set_timelog();
-  }
-
   switch (keycode) {
     case QWERTY:
       if (record->event.pressed) {
diff --git a/keyboards/lily58/keymaps/datadavd/config.h b/keyboards/lily58/keymaps/datadavd/config.h
index 19b372e569..c851d7ad0e 100644
--- a/keyboards/lily58/keymaps/datadavd/config.h
+++ b/keyboards/lily58/keymaps/datadavd/config.h
@@ -28,8 +28,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define MASTER_RIGHT
 // #define EE_HANDS
 
-// #define SSD1306OLED
-
 #define QUICK_TAP_TERM 0
 #define TAPPING_TERM 50
 
diff --git a/keyboards/lily58/keymaps/domnantas/config.h b/keyboards/lily58/keymaps/domnantas/config.h
index 143a950ef2..830139cc03 100644
--- a/keyboards/lily58/keymaps/domnantas/config.h
+++ b/keyboards/lily58/keymaps/domnantas/config.h
@@ -28,7 +28,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define MASTER_RIGHT
 #define EE_HANDS
 
-// #define SSD1306OLED
-
 #define QUICK_TAP_TERM 0
 #define TAPPING_TERM 100
diff --git a/keyboards/lily58/keymaps/hvp/config.h b/keyboards/lily58/keymaps/hvp/config.h
index ec0960470a..35c0f25f2c 100644
--- a/keyboards/lily58/keymaps/hvp/config.h
+++ b/keyboards/lily58/keymaps/hvp/config.h
@@ -28,8 +28,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define MASTER_RIGHT
 // #define EE_HANDS
 
-#define SSD1306OLED
-
 #define TAPPING_TERM 100
 #undef TAPPING_TERM
 #define TAPPING_TERM 150
diff --git a/keyboards/lily58/keymaps/hvp/keymap.c b/keyboards/lily58/keymaps/hvp/keymap.c
index 5ca0b73653..b94ea9397c 100644
--- a/keyboards/lily58/keymaps/hvp/keymap.c
+++ b/keyboards/lily58/keymaps/hvp/keymap.c
@@ -5,9 +5,6 @@
   #include "lufa.h"
   #include "split_util.h"
 #endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 #ifdef RGBLIGHT_ENABLE
 //Following line allows macro to read current RGB settings
@@ -84,63 +81,9 @@ void matrix_init_user(void) {
     #ifdef RGBLIGHT_ENABLE
       RGB_current_mode = rgblight_config.mode;
     #endif
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
 }
 
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-// When add source files to SRC in rules.mk, you can use functions.
-const char *read_layer_state(void);
-const char *read_logo(void);
-void set_keylog(uint16_t keycode, keyrecord_t *record);
-const char *read_keylog(void);
-const char *read_keylogs(void);
-
-void matrix_scan_user(void) {
-   iota_gfx_task();
-}
-
-void matrix_render_user(struct CharacterMatrix *matrix) {
-  if (is_master) {
-    // If you want to change the display of OLED, you need to change here
-    matrix_write_ln(matrix, read_layer_state());
-    matrix_write_ln(matrix, read_keylog());
-    matrix_write_ln(matrix, read_keylogs());
-    //matrix_write_ln(matrix, read_mode_icon(keymap_config.swap_lalt_lgui));
-    //matrix_write_ln(matrix, read_host_led_state());
-    //matrix_write_ln(matrix, read_timelog());
-  } else {
-    matrix_write(matrix, read_logo());
-  }
-}
-
-void matrix_update(struct CharacterMatrix *dest, const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-  matrix_clear(&matrix);
-  matrix_render_user(&matrix);
-  matrix_update(&display, &matrix);
-}
-#endif//SSD1306OLED
-
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  if (record->event.pressed) {
-#ifdef SSD1306OLED
-    set_keylog(keycode, record);
-#endif
-    // set_timelog();
-  }
-
   switch (keycode) {
     case QWERTY:
       if (record->event.pressed) {
diff --git a/keyboards/lily58/keymaps/jhelvy/config.h b/keyboards/lily58/keymaps/jhelvy/config.h
index dbd058a8b5..08ddcd4e32 100644
--- a/keyboards/lily58/keymaps/jhelvy/config.h
+++ b/keyboards/lily58/keymaps/jhelvy/config.h
@@ -28,8 +28,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define MASTER_RIGHT
 // #define EE_HANDS
 
-#define SSD1306OLED
-
 #define QUICK_TAP_TERM 0
 #undef TAPPING_TERM
 #define TAPPING_TERM 200
diff --git a/keyboards/lily58/keymaps/jhelvy/keymap.c b/keyboards/lily58/keymaps/jhelvy/keymap.c
index 03e56b1bd1..ae44d372c6 100644
--- a/keyboards/lily58/keymaps/jhelvy/keymap.c
+++ b/keyboards/lily58/keymaps/jhelvy/keymap.c
@@ -4,10 +4,6 @@
   #include "lufa.h"
   #include "split_util.h"
 #endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
-
 
 extern uint8_t is_master;
 
@@ -45,68 +41,3 @@ LGUI(KC_BSPC),MO(2),LGUI(KC_S),LGUI(KC_C),LGUI(KC_V),LGUI(KC_X),
                                   KC_NO,   KC_NO,KC_NO,  KC_NO,    KC_NO, KC_TRNS,     KC_NO,     KC_NO)
 
 };
-
-void matrix_init_user(void) {
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
-}
-
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-// When add source files to SRC in rules.mk, you can use functions.
-const char *read_layer_state(void);
-const char *read_logo(void);
-void set_keylog(uint16_t keycode, keyrecord_t *record);
-const char *read_keylog(void);
-const char *read_keylogs(void);
-
-// const char *read_mode_icon(bool swap);
-// const char *read_host_led_state(void);
-// void set_timelog(void);
-// const char *read_timelog(void);
-
-void matrix_scan_user(void) {
-   iota_gfx_task();
-}
-
-void matrix_render_user(struct CharacterMatrix *matrix) {
-  if (is_master) {
-    // If you want to change the display of OLED, you need to change here
-    matrix_write_ln(matrix, read_layer_state());
-    matrix_write_ln(matrix, read_keylog());
-    matrix_write_ln(matrix, read_keylogs());
-    //matrix_write_ln(matrix, read_mode_icon(keymap_config.swap_lalt_lgui));
-    //matrix_write_ln(matrix, read_host_led_state());
-    //matrix_write_ln(matrix, read_timelog());
-  } else {
-    matrix_write(matrix, read_logo());
-  }
-}
-
-void matrix_update(struct CharacterMatrix *dest, const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-  matrix_clear(&matrix);
-  matrix_render_user(&matrix);
-  matrix_update(&display, &matrix);
-}
-#endif//SSD1306OLED
-
-bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  if (record->event.pressed) {
-#ifdef SSD1306OLED
-    set_keylog(keycode, record);
-#endif
-    // set_timelog();
-  }
-  return true;
-}
diff --git a/keyboards/lily58/keymaps/mikefightsbears/keymap.c b/keyboards/lily58/keymaps/mikefightsbears/keymap.c
index 4bf723eb8d..ce9aa64e35 100644
--- a/keyboards/lily58/keymaps/mikefightsbears/keymap.c
+++ b/keyboards/lily58/keymaps/mikefightsbears/keymap.c
@@ -4,9 +4,6 @@
   #include "lufa.h"
   #include "split_util.h"
 #endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 #ifdef RGBLIGHT_ENABLE
 //Following line allows macro to read current RGB settings
diff --git a/keyboards/lily58/keymaps/yshrsmz/keymap.c b/keyboards/lily58/keymaps/yshrsmz/keymap.c
index 03269aa6a9..3ab9222b9d 100644
--- a/keyboards/lily58/keymaps/yshrsmz/keymap.c
+++ b/keyboards/lily58/keymaps/yshrsmz/keymap.c
@@ -4,9 +4,6 @@
   #include "lufa.h"
   #include "split_util.h"
 #endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 #ifdef RGBLIGHT_ENABLE
 //Following line allows macro to read current RGB settings
diff --git a/keyboards/lily58/keymaps/yuchi/keymap.c b/keyboards/lily58/keymaps/yuchi/keymap.c
index 1c87661113..c8c9eea5e9 100644
--- a/keyboards/lily58/keymaps/yuchi/keymap.c
+++ b/keyboards/lily58/keymaps/yuchi/keymap.c
@@ -4,9 +4,6 @@
   #include "lufa.h"
   #include "split_util.h"
 #endif
-#ifdef SSD1306OLED
-  #include "ssd1306.h"
-#endif
 
 extern uint8_t is_master;
 
diff --git a/keyboards/rgbkb/sol/keymaps/xyverz/config.h b/keyboards/rgbkb/sol/keymaps/xyverz/config.h
deleted file mode 100644
index 334eee608c..0000000000
--- a/keyboards/rgbkb/sol/keymaps/xyverz/config.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
-This is the c configuration file for the keymap
-
-Copyright 2012 Jun Wako <wakojun@gmail.com>
-Copyright 2015 Jack Humbert
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#pragma once
-
-
-// place overrides here
-
-/* #define SSD1306OLED */
diff --git a/keyboards/rgbkb/zygomorph/keymaps/5x6pad/keymap.c b/keyboards/rgbkb/zygomorph/keymaps/5x6pad/keymap.c
index 01cccab9e5..4aeaddc39f 100644
--- a/keyboards/rgbkb/zygomorph/keymaps/5x6pad/keymap.c
+++ b/keyboards/rgbkb/zygomorph/keymaps/5x6pad/keymap.c
@@ -3,9 +3,6 @@
 #include "lufa.h"
 #include "split_util.h"
 #endif
-#ifdef SSD1306OLED
-  #include "common/ssd1306.h"
-#endif
 
 extern keymap_config_t keymap_config;
 
@@ -171,113 +168,4 @@ void matrix_init_user(void) {
     #ifdef RGBLIGHT_ENABLE
       RGB_current_mode = rgblight_config.mode;
     #endif
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
 }
-
-
-//SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
-#ifdef SSD1306OLED
-
-// hook point for 'led_test' keymap
-//   'default' keymap's led_test_init() is empty function, do nothing
-//   'led_test' keymap's led_test_init() force rgblight_mode_noeeprom(35);
-__attribute__ ((weak))
-void led_test_init(void) {}
-
-void matrix_scan_user(void) {
-    led_test_init();
-    iota_gfx_task();  // this is what updates the display continuously
-}
-
-void matrix_update(struct CharacterMatrix *dest,
-                          const struct CharacterMatrix *source) {
-  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
-    memcpy(dest->display, source->display, sizeof(dest->display));
-    dest->dirty = true;
-  }
-}
-
-//assign the right code to your layers for OLED display
-#define L_BASE 0
-#define L_FN (1<<_FN)
-#define L_ADJ (1<<_ADJ)
-
-static void render_logo(struct CharacterMatrix *matrix) {
-
-  static char logo[]={
-    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
-    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
-    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
-    0};
-  matrix_write(matrix, logo);
-  //matrix_write_P(&matrix, PSTR(" Split keyboard kit"));
-}
-
-
-
-void render_status(struct CharacterMatrix *matrix) {
-
-  // Render to mode icon
-  static char logo[][2][3]={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
-  if(keymap_config.swap_lalt_lgui==false){
-    matrix_write(matrix, logo[0][0]);
-    matrix_write_P(matrix, PSTR("\n"));
-    matrix_write(matrix, logo[0][1]);
-  }else{
-    matrix_write(matrix, logo[1][0]);
-    matrix_write_P(matrix, PSTR("\n"));
-    matrix_write(matrix, logo[1][1]);
-  }
-
-  // Define layers here, Have not worked out how to have text displayed for each layer. Copy down the number you see and add a case for it below
-  char buf[40];
-  snprintf(buf,sizeof(buf), "Undef-%ld", layer_state);
-  matrix_write_P(matrix, PSTR("\nLayer: "));
-    switch (layer_state) {
-        case L_BASE:
-           matrix_write_P(matrix, PSTR("Default"));
-           break;
-        case L_FN:
-           matrix_write_P(matrix, PSTR("FN"));
-           break;
-        case L_ADJ:
-        case L_ADJ_TRI:
-           matrix_write_P(matrix, PSTR("ADJ"));
-           break;
-        default:
-           matrix_write(matrix, buf);
-    }
-
-  // Host Keyboard LED Status
-  char led[40];
-  led_t led_state = host_keyboard_led_state();
-    snprintf(led, sizeof(led), "\n%s  %s  %s",
-            led_state.num_lock ? "NUMLOCK" : "       ",
-            led_state.caps_lock ? "CAPS" : "    ",
-            led_state.scroll_lock ? "SCLK" : "    ");
-  matrix_write(matrix, led);
-}
-
-
-void iota_gfx_task_user(void) {
-  struct CharacterMatrix matrix;
-
-#if DEBUG_TO_SCREEN
-  if (debug_enable) {
-    return;
-  }
-#endif
-
-  matrix_clear(&matrix);
-  if(is_master){
-    render_status(&matrix);
-  }else{
-    render_logo(&matrix);
-  }
-  matrix_update(&display, &matrix);
-}
-
-#endif
diff --git a/keyboards/spacetime/rev2/rev2.c b/keyboards/spacetime/rev2/rev2.c
deleted file mode 100644
index 3ecef1c1d8..0000000000
--- a/keyboards/spacetime/rev2/rev2.c
+++ /dev/null
@@ -1,24 +0,0 @@
-/* Copyright 2019 Kyle Terry
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "rev2.h"
-
-bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
-#ifdef SSD1306OLED
-  return process_record_gfx(keycode,record) && process_record_user(keycode, record);
-#else
-  return process_record_user(keycode, record);
-#endif
-}
diff --git a/layouts/community/split_3x6_3/drashna/config.h b/layouts/community/split_3x6_3/drashna/config.h
index 92065e8f31..cfed26931b 100644
--- a/layouts/community/split_3x6_3/drashna/config.h
+++ b/layouts/community/split_3x6_3/drashna/config.h
@@ -24,7 +24,6 @@
 #define SPLIT_MODS_ENABLE
 
 #undef USE_I2C
-#undef SSD1306OLED
 
 // #define QUICK_TAP_TERM 0
 // #define TAPPING_TERM 100
diff --git a/quantum/split_common/split_util.c b/quantum/split_common/split_util.c
index fca95e0847..5d044c4ea0 100644
--- a/quantum/split_common/split_util.c
+++ b/quantum/split_common/split_util.c
@@ -206,9 +206,6 @@ void split_pre_init(void) {
 #endif
 
     if (is_keyboard_master()) {
-#if defined(USE_I2C) && defined(SSD1306OLED)
-        matrix_master_OLED_init();
-#endif
         transport_master_init();
     }
 }
diff --git a/quantum/split_common/split_util.h b/quantum/split_common/split_util.h
index ab42c85e9f..f83b05b6a6 100644
--- a/quantum/split_common/split_util.h
+++ b/quantum/split_common/split_util.h
@@ -7,7 +7,6 @@
 
 extern volatile bool isLeftHand;
 
-void matrix_master_OLED_init(void);
 void split_pre_init(void);
 void split_post_init(void);