Initial support for ALT v2 (#21754)

14 files changed, 662 insertions, 0 deletions

diff --git a/keyboards/drop/alt/keymaps/default/keymap.c b/keyboards/drop/alt/keymaps/default/keymap.c
new file mode 100644
index 0000000000..28d7232bcf
--- /dev/null
+++ b/keyboards/drop/alt/keymaps/default/keymap.c
@@ -0,0 +1,20 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_65_ansi_blocker(
+        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_DEL,
+        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_HOME,
+        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_PGUP,
+        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_PGDN,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),   KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+    [1] = LAYOUT_65_ansi_blocker(
+        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,  _______, KC_MUTE,
+        _______, RGB_TOG, RGB_VAI, RGB_SPI, RGB_HUI, RGB_SAI, _______, _______, _______, _______, KC_PSCR, KC_SCRL, KC_PAUS, _______, KC_END, 
+        _______, RGB_MOD, RGB_VAD, RGB_SPD, RGB_HUD, RGB_SAD, _______, _______, _______, _______, _______, _______,          _______, KC_VOLU,
+        _______, RGB_M_P, RGB_M_B, RGB_M_R, RGB_M_SW,QK_BOOT, NK_TOGG, _______, _______, _______, _______, _______,          KC_PGUP, KC_VOLD,
+        _______, _______, _______,                            EE_CLR,                             KC_APP,  _______, KC_HOME, KC_PGDN, KC_END
+    )
+};
diff --git a/keyboards/drop/alt/keymaps/via/config.h b/keyboards/drop/alt/keymaps/via/config.h
new file mode 100644
index 0000000000..616f8e3291
--- /dev/null
+++ b/keyboards/drop/alt/keymaps/via/config.h
@@ -0,0 +1,5 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#define DYNAMIC_KEYMAP_LAYER_COUNT 8
diff --git a/keyboards/drop/alt/keymaps/via/keymap.c b/keyboards/drop/alt/keymaps/via/keymap.c
new file mode 100644
index 0000000000..28d7232bcf
--- /dev/null
+++ b/keyboards/drop/alt/keymaps/via/keymap.c
@@ -0,0 +1,20 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_65_ansi_blocker(
+        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_DEL,
+        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_HOME,
+        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_PGUP,
+        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_PGDN,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),   KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+    [1] = LAYOUT_65_ansi_blocker(
+        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,  _______, KC_MUTE,
+        _______, RGB_TOG, RGB_VAI, RGB_SPI, RGB_HUI, RGB_SAI, _______, _______, _______, _______, KC_PSCR, KC_SCRL, KC_PAUS, _______, KC_END, 
+        _______, RGB_MOD, RGB_VAD, RGB_SPD, RGB_HUD, RGB_SAD, _______, _______, _______, _______, _______, _______,          _______, KC_VOLU,
+        _______, RGB_M_P, RGB_M_B, RGB_M_R, RGB_M_SW,QK_BOOT, NK_TOGG, _______, _______, _______, _______, _______,          KC_PGUP, KC_VOLD,
+        _______, _______, _______,                            EE_CLR,                             KC_APP,  _______, KC_HOME, KC_PGDN, KC_END
+    )
+};
diff --git a/keyboards/drop/alt/keymaps/via/rules.mk b/keyboards/drop/alt/keymaps/via/rules.mk
new file mode 100644
index 0000000000..036bd6d1c3
--- /dev/null
+++ b/keyboards/drop/alt/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/drop/alt/v2/board.h b/keyboards/drop/alt/v2/board.h
new file mode 100644
index 0000000000..ed3ea4b1f7
--- /dev/null
+++ b/keyboards/drop/alt/v2/board.h
@@ -0,0 +1,8 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#include_next <board.h>
+
+#undef STM32_HSECLK
+#define STM32_HSECLK 16000000U
diff --git a/keyboards/drop/alt/v2/config.h b/keyboards/drop/alt/v2/config.h
new file mode 100644
index 0000000000..f3f432390e
--- /dev/null
+++ b/keyboards/drop/alt/v2/config.h
@@ -0,0 +1,29 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#define ADC_BUFFER_DEPTH 4
+#define ADC_SAMPLING_RATE ADC_SMPR_SMP_601P5
+#define ADC_RESOLUTION ADC_CFGR_RES_12BITS
+
+#define I2C_DRIVER I2CD2
+#define I2C1_SCL_PIN A9
+#define I2C1_SDA_PIN A10
+
+#define EXTERNAL_EEPROM_I2C_BASE_ADDRESS 0b10101000
+#define EXTERNAL_EEPROM_WP_PIN B5
+#define EEPROM_I2C_24LC256
+
+#define DRIVER_ADDR_1 0b1010011
+#define DRIVER_ADDR_2 0b1011111
+#define DRIVER_COUNT 2
+#define RGB_MATRIX_LED_COUNT 111
+#define ISSI_PWM_FREQUENCY 0b010 // 26k
+
+#define RGB_DISABLE_WHEN_USB_SUSPENDED
+#define RGB_MATRIX_DEFAULT_VAL 100
+#define RGB_MATRIX_KEYPRESSES
+#define RGB_MATRIX_FRAMEBUFFER_EFFECTS
+
+#define RGB_MATRIX_CYCLE_ZONES_ENABLE
+#define RGB_MATRIX_CAPS_LOCK_INDEX 30
diff --git a/keyboards/drop/alt/v2/halconf.h b/keyboards/drop/alt/v2/halconf.h
new file mode 100644
index 0000000000..77495ecfa0
--- /dev/null
+++ b/keyboards/drop/alt/v2/halconf.h
@@ -0,0 +1,8 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#define HAL_USE_ADC TRUE
+#define HAL_USE_I2C TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/drop/alt/v2/info.json b/keyboards/drop/alt/v2/info.json
new file mode 100644
index 0000000000..432dd4b2d1
--- /dev/null
+++ b/keyboards/drop/alt/v2/info.json
@@ -0,0 +1,261 @@
+{
+    "keyboard_name": "ALT v2", 
+    "manufacturer": "Drop Inc.",
+    "maintainer": "zvecr",
+    "processor": "STM32F303",
+    "bootloader": "tinyuf2",
+    "diode_direction": "COL2ROW",
+    "matrix_pins": {
+        "cols": ["C0", "C1", "C2", "C3", "B4", "B3", "C6", "C7", "C8", "C9", "C10", "C11", "C12", "C13", "C14"],
+        "rows": ["A0", "A1", "A2", "A3", "B10"]
+    },
+    "usb": {
+        "vid": "0x359B",
+        "pid": "0x0006",
+        "device_version": "2.0.0"
+    },
+    "eeprom": {
+        "driver": "i2c"
+    },
+    "features": {
+        "rgb_matrix": true,
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
+    "community_layouts": ["65_ansi_blocker"],
+    "layout_aliases": {
+        "LAYOUT": "LAYOUT_65_ansi_blocker"
+    },
+    "layouts": {
+        "LAYOUT_65_ansi_blocker": {
+            "layout": [
+              {"matrix": [0,  0], "label":"ESCAPE", "x":0, "y":0},
+              {"matrix": [0,  1], "label":"1", "x":1, "y":0},
+              {"matrix": [0,  2], "label":"2", "x":2, "y":0},
+              {"matrix": [0,  3], "label":"3", "x":3, "y":0},
+              {"matrix": [0,  4], "label":"4", "x":4, "y":0},
+              {"matrix": [0,  5], "label":"5", "x":5, "y":0},
+              {"matrix": [0,  6], "label":"6", "x":6, "y":0},
+              {"matrix": [0,  7], "label":"7", "x":7, "y":0},
+              {"matrix": [0,  8], "label":"8", "x":8, "y":0},
+              {"matrix": [0,  9], "label":"9", "x":9, "y":0},
+              {"matrix": [0, 10], "label":"0", "x":10, "y":0},
+              {"matrix": [0, 11], "label":"MINUS", "x":11, "y":0},
+              {"matrix": [0, 12], "label":"EQUALS", "x":12, "y":0},
+              {"matrix": [0, 13], "label":"BACKSPACE", "x":13, "y":0, "w":2},
+              {"matrix": [0, 14], "label":"DELETE", "x":15, "y":0},
+              {"matrix": [1,  0], "label":"TAB", "x":0, "y":1, "w":1.5},
+              {"matrix": [1,  1], "label":"Q", "x":1.5, "y":1},
+              {"matrix": [1,  2], "label":"W", "x":2.5, "y":1},
+              {"matrix": [1,  3], "label":"E", "x":3.5, "y":1},
+              {"matrix": [1,  4], "label":"R", "x":4.5, "y":1},
+              {"matrix": [1,  5], "label":"T", "x":5.5, "y":1},
+              {"matrix": [1,  6], "label":"Y", "x":6.5, "y":1},
+              {"matrix": [1,  7], "label":"U", "x":7.5, "y":1},
+              {"matrix": [1,  8], "label":"I", "x":8.5, "y":1},
+              {"matrix": [1,  9], "label":"O", "x":9.5, "y":1},
+              {"matrix": [1, 10], "label":"P", "x":10.5, "y":1},
+              {"matrix": [1, 11], "label":"LEFT BRACKET", "x":11.5, "y":1},
+              {"matrix": [1, 12], "label":"RIGHT BRACKET", "x":12.5, "y":1},
+              {"matrix": [1, 13], "label":"BACK SLASH", "x":13.5, "y":1, "w":1.5},
+              {"matrix": [1, 14], "label":"HOME", "x":15, "y":1},
+              {"matrix": [2,  0], "label":"CAPS LOCK", "x":0, "y":2, "w":1.75},
+              {"matrix": [2,  1], "label":"A", "x":1.75, "y":2},
+              {"matrix": [2,  2], "label":"S", "x":2.75, "y":2},
+              {"matrix": [2,  3], "label":"D", "x":3.75, "y":2},
+              {"matrix": [2,  4], "label":"F", "x":4.75, "y":2},
+              {"matrix": [2,  5], "label":"G", "x":5.75, "y":2},
+              {"matrix": [2,  6], "label":"H", "x":6.75, "y":2},
+              {"matrix": [2,  7], "label":"J", "x":7.75, "y":2},
+              {"matrix": [2,  8], "label":"K", "x":8.75, "y":2},
+              {"matrix": [2,  9], "label":"L", "x":9.75, "y":2},
+              {"matrix": [2, 10], "label":"SEMICOLON", "x":10.75, "y":2},
+              {"matrix": [2, 11], "label":"SINGLE TICK", "x":11.75, "y":2},
+              {"matrix": [2, 13], "label":"ENTER", "x":12.75, "y":2, "w":2.25},
+              {"matrix": [2, 14], "label":"PAGE UP", "x":15, "y":2},
+              {"matrix": [3,  0], "label":"LEFT SHIFT", "x":0, "y":3, "w":2.25},
+              {"matrix": [3,  2], "label":"Z", "x":2.25, "y":3},
+              {"matrix": [3,  3], "label":"X", "x":3.25, "y":3},
+              {"matrix": [3,  4], "label":"C", "x":4.25, "y":3},
+              {"matrix": [3,  5], "label":"V", "x":5.25, "y":3},
+              {"matrix": [3,  6], "label":"B", "x":6.25, "y":3},
+              {"matrix": [3,  7], "label":"N", "x":7.25, "y":3},
+              {"matrix": [3,  8], "label":"M", "x":8.25, "y":3},
+              {"matrix": [3,  9], "label":"COMMA", "x":9.25, "y":3},
+              {"matrix": [3, 10], "label":"PERIOD", "x":10.25, "y":3},
+              {"matrix": [3, 11], "label":"FORWARD SLASH", "x":11.25, "y":3},
+              {"matrix": [3, 12], "label":"RIGHT SHIFT", "x":12.25, "y":3, "w":1.75},
+              {"matrix": [3, 13], "label":"UP ARROW", "x":14, "y":3},
+              {"matrix": [3, 14], "label":"PAGE DOWN", "x":15, "y":3},
+              {"matrix": [4,  0], "label":"LEFT CTRL", "x":0, "y":4, "w":1.25},
+              {"matrix": [4,  1], "label":"LEFT WIN", "x":1.25, "y":4, "w":1.25},
+              {"matrix": [4,  2], "label":"LEFT ALT", "x":2.5, "y":4, "w":1.25},
+              {"matrix": [4,  6], "label":"SPACEBAR", "x":3.75, "y":4, "w":6.25},
+              {"matrix": [4, 10], "label":"RIGHT ALT", "x":10, "y":4, "w":1.25},
+              {"matrix": [4, 11], "label":"FN", "x":11.25, "y":4, "w":1.25},
+              {"matrix": [4, 12], "label":"LEFT ARROW", "x":13, "y":4},
+              {"matrix": [4, 13], "label":"DOWN ARROW", "x":14, "y":4},
+              {"matrix": [4, 14], "label":"RIGHT ARROW", "x":15, "y":4}
+            ]
+        }
+    },
+    "rgb_matrix": {
+        "driver": "IS31FL3733",
+        "animations": {
+            "alphas_mods": true,
+            "gradient_up_down": true,
+            "gradient_left_right": true,
+            "breathing": true,
+            "band_sat": true,
+            "band_val": true,
+            "band_pinwheel_sat": true,
+            "band_pinwheel_val": true,
+            "band_spiral_sat": true,
+            "band_spiral_val": true,
+            "cycle_all": true,
+            "cycle_left_right": true,
+            "cycle_up_down": true,
+            "cycle_out_in": true,
+            "cycle_out_in_dual": true,
+            "rainbow_moving_chevron": true,
+            "cycle_pinwheel": true,
+            "cycle_spiral": true,
+            "dual_beacon": true,
+            "rainbow_beacon": true,
+            "rainbow_pinwheels": true,
+            "raindrops": true,
+            "jellybean_raindrops": true,
+            "hue_breathing": true,
+            "hue_pendulum": true,
+            "hue_wave": true,
+            "pixel_fractal": true,
+            "pixel_flow": true,
+            "pixel_rain": true,
+            "typing_heatmap": true,
+            "digital_rain": true,
+            "solid_reactive_simple": true,
+            "solid_reactive": true,
+            "solid_reactive_wide": true,
+            "solid_reactive_multiwide": true,
+            "solid_reactive_cross": true,
+            "solid_reactive_multicross": true,
+            "solid_reactive_nexus": true,
+            "solid_reactive_multinexus": true,
+            "splash": true,
+            "multisplash": true,
+            "solid_splash": true,
+            "solid_multisplash": true
+        },
+        "layout": [
+            { "flags": 4, "matrix": [0, 0], "x": 8, "y": 56 },
+            { "flags": 4, "matrix": [0, 1], "x": 22, "y": 56 },
+            { "flags": 4, "matrix": [0, 2], "x": 35, "y": 56 },
+            { "flags": 4, "matrix": [0, 3], "x": 49, "y": 56 },
+            { "flags": 4, "matrix": [0, 4], "x": 63, "y": 56 },
+            { "flags": 4, "matrix": [0, 5], "x": 77, "y": 56 },
+            { "flags": 4, "matrix": [0, 6], "x": 91, "y": 56 },
+            { "flags": 4, "matrix": [0, 7], "x": 105, "y": 56 },
+            { "flags": 4, "matrix": [0, 8], "x": 118, "y": 56 },
+            { "flags": 4, "matrix": [0, 9], "x": 132, "y": 56 },
+            { "flags": 4, "matrix": [0, 10], "x": 146, "y": 56 },
+            { "flags": 4, "matrix": [0, 11], "x": 160, "y": 56 },
+            { "flags": 4, "matrix": [0, 12], "x": 174, "y": 56 },
+            { "flags": 4, "matrix": [0, 13], "x": 195, "y": 56 },
+            { "flags": 4, "matrix": [0, 14], "x": 215, "y": 56 },
+            { "flags": 4, "matrix": [1, 0], "x": 11, "y": 44 },
+            { "flags": 4, "matrix": [1, 1], "x": 28, "y": 44 },
+            { "flags": 4, "matrix": [1, 2], "x": 42, "y": 44 },
+            { "flags": 4, "matrix": [1, 3], "x": 56, "y": 44 },
+            { "flags": 4, "matrix": [1, 4], "x": 70, "y": 44 },
+            { "flags": 4, "matrix": [1, 5], "x": 84, "y": 44 },
+            { "flags": 4, "matrix": [1, 6], "x": 98, "y": 44 },
+            { "flags": 4, "matrix": [1, 7], "x": 112, "y": 44 },
+            { "flags": 4, "matrix": [1, 8], "x": 125, "y": 44 },
+            { "flags": 4, "matrix": [1, 9], "x": 139, "y": 44 },
+            { "flags": 4, "matrix": [1, 10], "x": 153, "y": 44 },
+            { "flags": 4, "matrix": [1, 11], "x": 167, "y": 44 },
+            { "flags": 4, "matrix": [1, 12], "x": 181, "y": 44 },
+            { "flags": 4, "matrix": [1, 13], "x": 198, "y": 44 },
+            { "flags": 4, "matrix": [1, 14], "x": 215, "y": 44 },
+            { "flags": 4, "matrix": [2, 0], "x": 13, "y": 32 },
+            { "flags": 4, "matrix": [2, 1], "x": 32, "y": 32 },
+            { "flags": 4, "matrix": [2, 2], "x": 46, "y": 32 },
+            { "flags": 4, "matrix": [2, 3], "x": 60, "y": 32 },
+            { "flags": 4, "matrix": [2, 4], "x": 73, "y": 32 },
+            { "flags": 4, "matrix": [2, 5], "x": 87, "y": 32 },
+            { "flags": 4, "matrix": [2, 6], "x": 101, "y": 32 },
+            { "flags": 4, "matrix": [2, 7], "x": 115, "y": 32 },
+            { "flags": 4, "matrix": [2, 8], "x": 129, "y": 32 },
+            { "flags": 4, "matrix": [2, 9], "x": 143, "y": 32 },
+            { "flags": 4, "matrix": [2, 10], "x": 156, "y": 32 },
+            { "flags": 4, "matrix": [2, 11], "x": 170, "y": 32 },
+            { "flags": 4, "matrix": [2, 13], "x": 193, "y": 32 },
+            { "flags": 4, "matrix": [2, 14], "x": 215, "y": 32 },
+            { "flags": 4, "matrix": [3, 0], "x": 16, "y": 19 },
+            { "flags": 4, "matrix": [3, 2], "x": 39, "y": 19 },
+            { "flags": 4, "matrix": [3, 3], "x": 53, "y": 19 },
+            { "flags": 4, "matrix": [3, 4], "x": 67, "y": 19 },
+            { "flags": 4, "matrix": [3, 5], "x": 80, "y": 19 },
+            { "flags": 4, "matrix": [3, 6], "x": 94, "y": 19 },
+            { "flags": 4, "matrix": [3, 7], "x": 108, "y": 19 },
+            { "flags": 4, "matrix": [3, 8], "x": 122, "y": 19 },
+            { "flags": 4, "matrix": [3, 9], "x": 136, "y": 19 },
+            { "flags": 4, "matrix": [3, 10], "x": 150, "y": 19 },
+            { "flags": 4, "matrix": [3, 11], "x": 163, "y": 19 },
+            { "flags": 4, "matrix": [3, 12], "x": 182, "y": 19 },
+            { "flags": 4, "matrix": [3, 13], "x": 201, "y": 19 },
+            { "flags": 4, "matrix": [3, 14], "x": 215, "y": 19 },
+            { "flags": 4, "matrix": [4, 0], "x": 9, "y": 7 },
+            { "flags": 4, "matrix": [4, 1], "x": 27, "y": 7 },
+            { "flags": 4, "matrix": [4, 2], "x": 44, "y": 7 },
+            { "flags": 4, "matrix": [4, 6], "x": 96, "y": 7 },
+            { "flags": 4, "matrix": [4, 10], "x": 148, "y": 7 },
+            { "flags": 4, "matrix": [4, 11], "x": 165, "y": 7 },
+            { "flags": 4, "matrix": [4, 12], "x": 188, "y": 7 },
+            { "flags": 4, "matrix": [4, 13], "x": 201, "y": 7 },
+            { "flags": 4, "matrix": [4, 14], "x": 215, "y": 7 },
+            { "flags": 2, "x": 1, "y": 1 },
+            { "flags": 2, "x": 15, "y": 0 },
+            { "flags": 2, "x": 31, "y": 0 },
+            { "flags": 2, "x": 47, "y": 0 },
+            { "flags": 2, "x": 63, "y": 0 },
+            { "flags": 2, "x": 79, "y": 0 },
+            { "flags": 2, "x": 95, "y": 0 },
+            { "flags": 2, "x": 112, "y": 0 },
+            { "flags": 2, "x": 128, "y": 0 },
+            { "flags": 2, "x": 144, "y": 0 },
+            { "flags": 2, "x": 160, "y": 0 },
+            { "flags": 2, "x": 176, "y": 0 },
+            { "flags": 2, "x": 192, "y": 0 },
+            { "flags": 2, "x": 208, "y": 0 },
+            { "flags": 2, "x": 222, "y": 1 },
+            { "flags": 2, "x": 224, "y": 13 },
+            { "flags": 2, "x": 224, "y": 25 },
+            { "flags": 2, "x": 224, "y": 38 },
+            { "flags": 2, "x": 224, "y": 50 },
+            { "flags": 2, "x": 222, "y": 62 },
+            { "flags": 2, "x": 191, "y": 64 },
+            { "flags": 2, "x": 179, "y": 64 },
+            { "flags": 2, "x": 167, "y": 64 },
+            { "flags": 2, "x": 153, "y": 64 },
+            { "flags": 2, "x": 139, "y": 64 },
+            { "flags": 2, "x": 125, "y": 64 },
+            { "flags": 2, "x": 112, "y": 64 },
+            { "flags": 2, "x": 98, "y": 64 },
+            { "flags": 2, "x": 84, "y": 64 },
+            { "flags": 2, "x": 70, "y": 64 },
+            { "flags": 2, "x": 56, "y": 64 },
+            { "flags": 2, "x": 42, "y": 64 },
+            { "flags": 2, "x": 28, "y": 64 },
+            { "flags": 2, "x": 1, "y": 62 },
+            { "flags": 2, "x": 0, "y": 50 },
+            { "flags": 2, "x": 0, "y": 38 },
+            { "flags": 2, "x": 0, "y": 25 },
+            { "flags": 2, "x": 0, "y": 13 }
+        ]
+    }
+}
diff --git a/keyboards/drop/alt/v2/mcuconf.h b/keyboards/drop/alt/v2/mcuconf.h
new file mode 100644
index 0000000000..dc3e45dac0
--- /dev/null
+++ b/keyboards/drop/alt/v2/mcuconf.h
@@ -0,0 +1,20 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PLLM_VALUE
+#define STM32_PLLM_VALUE 16
+
+#undef STM32_PREDIV_VALUE
+#define STM32_PREDIV_VALUE 2
+
+#undef STM32_ADC_USE_ADC2
+#define STM32_ADC_USE_ADC2 TRUE
+
+#undef STM32_ADC_USE_ADC3
+#define STM32_ADC_USE_ADC3 TRUE
+
+#undef STM32_I2C_USE_I2C2
+#define STM32_I2C_USE_I2C2 TRUE
diff --git a/keyboards/drop/alt/v2/readme.md b/keyboards/drop/alt/v2/readme.md
new file mode 100644
index 0000000000..bf69d4b289
--- /dev/null
+++ b/keyboards/drop/alt/v2/readme.md
@@ -0,0 +1,24 @@
+# ALT v2
+
+The Drop ALT v2 is a 65% mechanical keyboard featuring dual USB-C connectors, an integrated Hi-Speed USB 2.0 hub, and fully customizable RGB backlighting and underlighting.
+
+* Keyboard Maintainer: [zvecr](https://github.com/zvecr)
+* Hardware Availability: [Drop ALT Mechanical Keyboard](https://drop.com/buy/drop-alt-mechanical-keyboard)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make drop/alt/v2:default
+
+Flashing example for this keyboard:
+
+    make drop/alt/v2:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Quickly double tap the button located under the spacebar
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available
diff --git a/keyboards/drop/alt/v2/rules.mk b/keyboards/drop/alt/v2/rules.mk
new file mode 100644
index 0000000000..a504f81cb1
--- /dev/null
+++ b/keyboards/drop/alt/v2/rules.mk
@@ -0,0 +1,4 @@
+UF2_DEVICE_TYPE_ID = 0x35446147
+UF2CONV_ARGS = --device-type $(UF2_DEVICE_TYPE_ID)
+
+SRC += analog.c lib/common.c lib/mux.c
diff --git a/keyboards/drop/alt/v2/v2.c b/keyboards/drop/alt/v2/v2.c
new file mode 100644
index 0000000000..2e183fe4d8
--- /dev/null
+++ b/keyboards/drop/alt/v2/v2.c
@@ -0,0 +1,114 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifdef RGB_MATRIX_ENABLE
+#    include "rgb_matrix.h"
+
+const is31_led PROGMEM g_is31_leds[RGB_MATRIX_LED_COUNT] = {
+     { 1, B_2, A_2, C_2 },
+     { 1, E_3, D_3, F_3 },
+     { 1, E_4, D_4, F_4 },
+     { 1, E_5, D_5, F_5 },
+     { 1, E_6, D_6, F_6 },
+     { 1, E_7, D_7, F_7 },
+     { 1, E_8, D_8, F_8 },
+     { 1, B_13, A_13, C_13 },
+     { 0, E_1, D_1, F_1 },
+     { 0, E_2, D_2, F_2 },
+     { 0, E_3, D_3, F_3 },
+     { 0, E_4, D_4, F_4 },
+     { 0, E_5, D_5, F_5 },
+     { 0, E_6, D_6, F_6 },
+     { 0, B_7, A_7, C_7 },
+     { 1, E_2, D_2, F_2 },
+     { 1, H_3, G_3, I_3 },
+     { 1, H_4, G_4, I_4 },
+     { 1, H_5, G_5, I_5 },
+     { 1, H_6, G_6, I_6 },
+     { 1, H_7, G_7, I_7 },
+     { 1, H_8, G_8, I_8 },
+     { 0, H_1, G_1, I_1 },
+     { 0, H_2, G_2, I_2 },
+     { 0, H_3, G_3, I_3 },
+     { 0, H_4, G_4, I_4 },
+     { 0, H_5, G_5, I_5 },
+     { 0, K_11, J_11, L_11 },
+     { 0, H_6, G_6, I_6 },
+     { 0, E_7, D_7, F_7 },
+     { 1, H_2, G_2, I_2 },
+     { 1, K_3, J_3, L_3 },
+     { 1, K_4, J_4, L_4 },
+     { 1, K_5, J_5, L_5 },
+     { 1, K_6, J_6, L_6 },
+     { 1, K_7, J_7, L_7 },
+     { 1, K_8, J_8, L_8 },
+     { 0, K_1, J_1, L_1 },
+     { 0, K_2, J_2, L_2 },
+     { 0, K_3, J_3, L_3 },
+     { 0, K_4, J_4, L_4 },
+     { 0, K_5, J_5, L_5 },
+     { 0, K_6, J_6, L_6 },
+     { 0, H_7, G_7, I_7 },
+     { 1, K_2, J_2, L_2 },
+     { 1, E_9, D_9, F_9 },
+     { 1, B_9, A_9, C_9 },
+     { 1, K_9, J_9, L_9 },
+     { 1, H_9, G_9, I_9 },
+     { 1, K_12, J_12, L_12 },
+     { 1, K_13, J_13, L_13 },
+     { 0, K_9, J_9, L_9 },
+     { 0, K_10, J_10, L_10 },
+     { 0, H_10, G_10, I_10 },
+     { 0, H_11, G_11, I_11 },
+     { 0, B_11, A_11, C_11 },
+     { 0, E_11, D_11, F_11 },
+     { 0, K_7, J_7, L_7 },
+     { 1, H_10, G_10, I_10 },
+     { 1, E_10, D_10, F_10 },
+     { 1, B_10, A_10, C_10 },
+     { 1, H_12, G_12, I_12 },
+     { 0, E_10, D_10, F_10 },
+     { 0, B_10, A_10, C_10 },
+     { 0, B_12, A_12, C_12 },
+     { 0, H_12, G_12, I_12 },
+     { 0, E_12, D_12, F_12 },
+     { 1, K_11, J_11, L_11 },
+     { 1, H_11, G_11, I_11 },
+     { 1, E_11, D_11, F_11 },
+     { 1, B_11, A_11, C_11 },
+     { 1, B_12, A_12, C_12 },
+     { 1, E_12, D_12, F_12 },
+     { 1, E_13, D_13, F_13 },
+     { 1, H_13, G_13, I_13 },
+     { 0, H_9, G_9, I_9 },
+     { 0, E_9, D_9, F_9 },
+     { 0, B_9, A_9, C_9 },
+     { 0, B_13, A_13, C_13 },
+     { 0, H_13, G_13, I_13 },
+     { 0, E_13, D_13, F_13 },
+     { 0, K_13, J_13, L_13 },
+     { 0, K_12, J_12, L_12 },
+     { 0, K_8, J_8, L_8 },
+     { 0, H_8, G_8, I_8 },
+     { 0, E_8, D_8, F_8 },
+     { 0, B_8, A_8, C_8 },
+     { 0, B_6, A_6, C_6 },
+     { 0, B_5, A_5, C_5 },
+     { 0, B_4, A_4, C_4 },
+     { 0, B_3, A_3, C_3 },
+     { 0, B_2, A_2, C_2 },
+     { 0, B_1, A_1, C_1 },
+     { 0, B_14, A_14, C_14 },
+     { 1, B_8, A_8, C_8 },
+     { 1, B_7, A_7, C_7 },
+     { 1, B_6, A_6, C_6 },
+     { 1, B_5, A_5, C_5 },
+     { 1, B_4, A_4, C_4 },
+     { 1, B_3, A_3, C_3 },
+     { 1, B_1, A_1, C_1 },
+     { 1, E_1, D_1, F_1 },
+     { 1, H_1, G_1, I_1 },
+     { 1, K_1, J_1, L_1 },
+     { 1, K_10, J_10, L_10 },
+};
+
+#endif
diff --git a/keyboards/drop/lib/common.c b/keyboards/drop/lib/common.c
new file mode 100644
index 0000000000..515625a686
--- /dev/null
+++ b/keyboards/drop/lib/common.c
@@ -0,0 +1,54 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifdef RGB_MATRIX_ENABLE
+#    include "host.h"
+#    include "rgb_matrix.h"
+
+#    define LED_FLAG_ANY_SWITCH (LED_FLAG_KEYLIGHT | LED_FLAG_MODIFIER | LED_FLAG_INDICATOR)
+
+#    ifdef RGB_MATRIX_CAPS_LOCK_INDEX
+bool rgb_matrix_indicators_kb(void) {
+    if (!rgb_matrix_indicators_user()) {
+        return false;
+    }
+
+    if (host_keyboard_led_state().caps_lock) {
+        rgb_matrix_set_color(RGB_MATRIX_CAPS_LOCK_INDEX, RGB_WHITE);
+    } else if ((rgb_matrix_get_flags() & LED_FLAG_ANY_SWITCH) == 0) {
+        rgb_matrix_set_color(RGB_MATRIX_CAPS_LOCK_INDEX, RGB_OFF);
+    }
+    return true;
+}
+#    endif
+
+#    ifdef RGB_MATRIX_CYCLE_ZONES_ENABLE
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+    if (!process_record_user(keycode, record)) {
+        return false;
+    }
+
+    if (!record->event.pressed) {
+        switch (keycode) {
+            case RGB_TOG:
+                switch (rgb_matrix_get_flags()) {
+                    case LED_FLAG_ALL:
+                        rgb_matrix_set_flags(LED_FLAG_ANY_SWITCH);
+                        break;
+                    case LED_FLAG_ANY_SWITCH:
+                        rgb_matrix_set_flags(LED_FLAG_UNDERGLOW);
+                        break;
+                    case LED_FLAG_UNDERGLOW:
+                        rgb_matrix_set_flags(LED_FLAG_NONE);
+                        break;
+                    default:
+                        rgb_matrix_set_flags(LED_FLAG_ALL);
+                        break;
+                }
+                return false;
+        }
+    }
+    return true;
+};
+#    endif
+
+#endif
diff --git a/keyboards/drop/lib/mux.c b/keyboards/drop/lib/mux.c
new file mode 100644
index 0000000000..85a657544f
--- /dev/null
+++ b/keyboards/drop/lib/mux.c
@@ -0,0 +1,94 @@
+// Copyright 2023 Massdrop, Inc.
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "keyboard.h"
+#include "analog.h"
+#include "gpio.h"
+#include "wait.h"
+
+#define S_UP        B12
+#define E_UP_N      B13
+#define S_DN1       B14
+#define E_DN1_N     B15
+#define E_VBUS_1    A8
+#define E_VBUS_2    A15
+#define SRC_1       B8
+#define SRC_2       B9
+#define HUB_RESET_N D2
+#define IRST        B1
+#define SDB_N       B2
+#define C1_A5_SENSE A4
+#define C1_B5_SENSE A7
+#define C2_A5_SENSE C4
+#define C2_B5_SENSE B0
+
+static inline void digital_write(pin_t pin, uint8_t level) {
+    setPinOutput(pin);
+    writePin(pin, level);
+}
+
+uint16_t v_con_1 = 0;
+uint16_t v_con_2 = 0;
+uint16_t v_con_3 = 0;
+uint16_t v_con_4 = 0;
+
+void keyboard_USB_enable(void) {
+    // initial state
+    digital_write(S_UP, 0);
+    digital_write(E_UP_N, 1);
+    digital_write(S_DN1, 1);
+    digital_write(E_DN1_N, 1);
+    digital_write(E_VBUS_1, 0);
+    digital_write(E_VBUS_2, 0);
+    digital_write(SRC_1, 1);
+    digital_write(SRC_2, 1);
+
+    setPinInput(C1_A5_SENSE);
+    setPinInput(C1_B5_SENSE);
+    setPinInput(C2_A5_SENSE);
+    setPinInput(C2_B5_SENSE);
+
+    // reset hub
+    digital_write(HUB_RESET_N, 0);
+    wait_ms(100);
+    digital_write(HUB_RESET_N, 1);
+
+    wait_ms(500); // Allow power dissipation time on CC lines
+
+    v_con_1 = analogReadPin(C1_A5_SENSE);
+    v_con_2 = analogReadPin(C1_B5_SENSE);
+    v_con_3 = analogReadPin(C2_A5_SENSE);
+    v_con_4 = analogReadPin(C2_B5_SENSE);
+
+    // TODO: dynamic port port configure logic?
+    digital_write(E_UP_N, 0);   // HOST enable
+    digital_write(E_DN1_N, 0);  // EXTRA enable
+    digital_write(E_VBUS_1, 1); // USBC-1 enable full power I/O
+    digital_write(E_VBUS_2, 1); // USBC-2 enable full power I/O
+
+    if ((v_con_1 + v_con_2) > (v_con_3 + v_con_4)) {
+        digital_write(S_UP, 0);  // HOST to USBC-1
+        digital_write(S_DN1, 1); // EXTRA to USBC-2
+        digital_write(SRC_1, 1); // HOST on USBC-1
+        digital_write(SRC_2, 0); // EXTRA available on USBC-2
+    } else {
+        digital_write(S_UP, 1);  // EXTRA to USBC-1
+        digital_write(S_DN1, 0); // HOST to USBC-2
+        digital_write(SRC_1, 0); // EXTRA available on USBC-1
+        digital_write(SRC_2, 1); // HOST on USBC-2
+    }
+}
+
+void keyboard_ISSI_enable(void) {
+#ifdef RGB_MATRIX_ENABLE
+    digital_write(IRST, 0);
+    digital_write(SDB_N, 1);
+#endif
+}
+
+
+void keyboard_pre_init_kb(void) {
+    keyboard_USB_enable();
+    keyboard_ISSI_enable();
+
+    keyboard_pre_init_user();
+}