diff --git a/keyboards/frooastboard/walnut/keymaps/via/config.h b/keyboards/frooastboard/walnut/keymaps/via/config.h
new file mode 100644
index 00000000..0ef255fb
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/via/config.h
@@ -0,0 +1,7 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#define VIA_CUSTOM_LIGHTING_ENABLE
+#define DYNAMIC_KEYMAP_LAYER_COUNT 2
diff --git a/keyboards/frooastboard/walnut/keymaps/via/keymap.c b/keyboards/frooastboard/walnut/keymaps/via/keymap.c
new file mode 100644
index 00000000..84b73e21
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/via/keymap.c
@@ -0,0 +1,131 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	[0] = LAYOUT_all(
+		KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_HOME, KC_PGUP,
+		KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_DEL,  KC_END,  KC_PGDN,
+		KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
+		KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                            KC_UP,
+		KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    KC_RALT, MO(1),   KC_MENU, KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT),
+
+	[1] = LAYOUT_all(
+		KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  EE_CLR,           KC_PSCR, KC_SCRL, KC_PAUS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                            RGB_VAI,
+		KC_TRNS, GUI_TOG, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   RGB_RMOD,RGB_VAD, RGB_MOD)
+};
+
+#if defined(RGB_MATRIX_ENABLE) && defined(VIA_CUSTOM_LIGHTING_ENABLE)
+
+// VIA supports only 4 discrete values for effect speed; map these to some
+// useful speed values for RGB Matrix.
+enum speed_values {
+    RGBLIGHT_SPEED_0 = UINT8_MAX / 16, // not 0 to avoid really slow effects
+    RGBLIGHT_SPEED_1 = UINT8_MAX / 4,
+    RGBLIGHT_SPEED_2 = UINT8_MAX / 2,     // matches the default value
+    RGBLIGHT_SPEED_3 = UINT8_MAX / 4 * 3, // UINT8_MAX is really fast
+};
+
+static uint8_t speed_from_rgblight(uint8_t rgblight_speed) {
+    switch (rgblight_speed) {
+        case 0:
+            return RGBLIGHT_SPEED_0;
+        case 1:
+            return RGBLIGHT_SPEED_1;
+        case 2:
+        default:
+            return RGBLIGHT_SPEED_2;
+        case 3:
+            return RGBLIGHT_SPEED_3;
+    }
+}
+
+static uint8_t speed_to_rgblight(uint8_t rgb_matrix_speed) {
+    if (rgb_matrix_speed < ((RGBLIGHT_SPEED_0 + RGBLIGHT_SPEED_1) / 2)) {
+        return 0;
+    } else if (rgb_matrix_speed < ((RGBLIGHT_SPEED_1 + RGBLIGHT_SPEED_2) / 2)) {
+        return 1;
+    } else if (rgb_matrix_speed < ((RGBLIGHT_SPEED_2 + RGBLIGHT_SPEED_3) / 2)) {
+        return 2;
+    } else {
+        return 3;
+    }
+}
+
+void via_qmk_rgblight_get_value(uint8_t *data) {
+    uint8_t *value_id   = &(data[0]);
+    uint8_t *value_data = &(data[1]);
+    switch (*value_id) {
+        case id_qmk_rgblight_brightness: {
+            value_data[0] = rgb_matrix_get_val();
+            break;
+        }
+        case id_qmk_rgblight_effect: {
+            value_data[0] = rgb_matrix_is_enabled() ? rgb_matrix_get_mode() : 0;
+            break;
+        }
+        case id_qmk_rgblight_effect_speed: {
+            value_data[0] = speed_to_rgblight(rgb_matrix_get_speed());
+            break;
+        }
+        case id_qmk_rgblight_color: {
+            value_data[0] = rgb_matrix_get_hue();
+            value_data[1] = rgb_matrix_get_sat();
+            break;
+        }
+    }
+}
+
+void via_qmk_rgblight_set_value(uint8_t *data) {
+    uint8_t *value_id   = &(data[0]);
+    uint8_t *value_data = &(data[1]);
+    switch (*value_id) {
+        case id_qmk_rgblight_brightness: {
+            rgb_matrix_sethsv_noeeprom(rgblight_get_hue(), rgblight_get_sat(), value_data[0]);
+            break;
+        }
+        case id_qmk_rgblight_effect: {
+            if (value_data[0] == 0) {
+                rgb_matrix_disable_noeeprom();
+            } else {
+                rgb_matrix_enable_noeeprom();
+                rgb_matrix_mode_noeeprom(value_data[0]);
+            }
+            break;
+        }
+        case id_qmk_rgblight_effect_speed: {
+            rgb_matrix_set_speed_noeeprom(speed_from_rgblight(value_data[0]));
+            break;
+        }
+        case id_qmk_rgblight_color: {
+            rgb_matrix_sethsv_noeeprom(value_data[0], value_data[1], rgblight_get_val());
+            break;
+        }
+    }
+}
+
+void raw_hid_receive_kb(uint8_t *data, uint8_t length) {
+    uint8_t *command_id   = &(data[0]);
+    uint8_t *command_data = &(data[1]);
+    switch (*command_id) {
+        case id_lighting_set_value:
+            via_qmk_rgblight_set_value(command_data);
+            break;
+        case id_lighting_get_value:
+            via_qmk_rgblight_get_value(command_data);
+            break;
+        case id_lighting_save:
+            eeconfig_update_rgb_matrix();
+            break;
+        default:
+            // Unhandled message.
+            *command_id = id_unhandled;
+            break;
+    }
+}
+
+#endif // defined(RGB_MATRIX_ENABLE) && defined(VIA_CUSTOM_LIGHTING_ENABLE)
diff --git a/keyboards/frooastboard/walnut/keymaps/via/rules.mk b/keyboards/frooastboard/walnut/keymaps/via/rules.mk
new file mode 100644
index 00000000..1e5b9980
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/kbdfans/tiger80/keymaps/via/keymap.c b/keyboards/kbdfans/tiger80/keymaps/via/keymap.c
new file mode 100644
index 00000000..2732c23f
--- /dev/null
+++ b/keyboards/kbdfans/tiger80/keymaps/via/keymap.c
@@ -0,0 +1,63 @@
+/* Copyright 2022 DZTECH <moyi4681@Live.cn>
+ *
+ * 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 QMK_KEYBOARD_H
+
+enum layers {
+    _LAYER0,
+    _LAYER1,
+    _LAYER2,
+    _LAYER3,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [_LAYER0] = LAYOUT_all(
+        KC_ESC, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_MUTE, KC_PSCR, KC_SLCK, KC_PAUS, 
+        KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_BSPC, KC_INS, KC_HOME, KC_PGUP, 
+        KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL, KC_END, KC_PGDN, 
+        KC_CAPS, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_ENT, 
+        KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, KC_UP,
+        KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_RALT, KC_RGUI, KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+
+    [_LAYER1] = LAYOUT_all(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+
+    [_LAYER2] = LAYOUT_all(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS 
+    ),
+
+    [_LAYER3] = LAYOUT_all(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, 
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};
diff --git a/keyboards/kbdfans/tiger80/keymaps/via/rules.mk b/keyboards/kbdfans/tiger80/keymaps/via/rules.mk
new file mode 100644
index 00000000..f87b150d
--- /dev/null
+++ b/keyboards/kbdfans/tiger80/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LT0_ENABLE = yes