feat(nordic/ble): request specific connection interval and phy

diff --git a/nordic/trezor/trezor-ble/prj.conf b/nordic/trezor/trezor-ble/prj.conf
index 61e97a577..1c5756226 100644
--- a/nordic/trezor/trezor-ble/prj.conf
+++ b/nordic/trezor/trezor-ble/prj.conf
@@ -53,7 +53,12 @@ CONFIG_BT_PRIVACY=y
 CONFIG_BT_TINYCRYPT_ECC=y
 CONFIG_BT_LL_SW_SPLIT=y
 CONFIG_BT_CTLR_TX_PWR_PLUS_4=y
-
+CONFIG_BT_GAP_PERIPHERAL_PREF_PARAMS=y
+CONFIG_BT_PERIPHERAL_PREF_MIN_INT=6
+CONFIG_BT_PERIPHERAL_PREF_MAX_INT=6
+CONFIG_BT_PERIPHERAL_PREF_TIMEOUT=400
+CONFIG_BT_CTLR_PHY_2M=y
+CONFIG_BT_USER_PHY_UPDATE=y
 
 #PHY update needed for updating PHY request
 CONFIG_BT_PHY_UPDATE=y
diff --git a/nordic/trezor/trezor-ble/src/ble/connection.c b/nordic/trezor/trezor-ble/src/ble/connection.c
index c581f09ee..1cdcbdde2 100644
--- a/nordic/trezor/trezor-ble/src/ble/connection.c
+++ b/nordic/trezor/trezor-ble/src/ble/connection.c
@@ -35,6 +35,27 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME);
 static struct bt_conn *current_conn = NULL;
 static struct bt_conn *next_conn = NULL;
 
+static void show_params(struct bt_conn *conn) {
+  struct bt_conn_info info;
+  if (bt_conn_get_info(conn, &info) == 0 && info.type == BT_CONN_TYPE_LE) {
+    const struct bt_conn_le_info *le = &info.le;
+    /* Bluetooth units: interval = 1.25 ms, timeout = 10 ms */
+    uint32_t interval_ms = le->interval * 125 / 100;  // 1.25 ms units → ms
+    uint32_t timeout_ms = le->timeout * 10;           // 10 ms units  → ms
+    LOG_INF("Conn params: interval=%u.%02u ms, latency=%u, timeout=%u ms",
+            interval_ms, (le->interval * 125) % 100, le->latency, timeout_ms);
+  }
+}
+
+/* Called when central updates params */
+static void le_param_updated(struct bt_conn *conn, uint16_t interval,
+                             uint16_t latency, uint16_t timeout) {
+  uint32_t interval_ms = interval * 125 / 100;
+  uint32_t timeout_ms = timeout * 10;
+  LOG_INF("Params updated: interval=%u.%02u ms, latency=%u, timeout=%u ms",
+          interval_ms, (interval * 125) % 100, latency, timeout_ms);
+}
+
 void connected(struct bt_conn *conn, uint8_t err) {
   char addr[BT_ADDR_LE_STR_LEN];
 
@@ -43,6 +64,20 @@ void connected(struct bt_conn *conn, uint8_t err) {
     return;
   }
 
+  show_params(conn);
+
+  const struct bt_le_conn_param *param = BT_LE_CONN_PARAM(6, 6, 0, 400);
+  bt_conn_le_param_update(conn, param);
+
+  // Prefer 2M both directions; 0 options = no specific constraints
+  const struct bt_conn_le_phy_param phy_2m = {
+      .options = 0,
+      .pref_tx_phy = BT_GAP_LE_PHY_2M,
+      .pref_rx_phy = BT_GAP_LE_PHY_2M,
+  };
+
+  bt_conn_le_phy_update(conn, &phy_2m);
+
   bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
   LOG_INF("Connected %s", addr);
 
@@ -106,6 +141,7 @@ BT_CONN_CB_DEFINE(conn_callbacks) = {
     .connected = connected,
     .disconnected = disconnected,
     .security_changed = security_changed,
+    .le_param_updated = le_param_updated,
 };
 
 bool connection_init(void) { return true; }
@@ -120,3 +156,21 @@ void connection_disconnect(void) {
 }
 
 struct bt_conn *connection_get_current(void) { return current_conn; }
+
+void connection_suspend(void) {
+  struct bt_conn *conn = connection_get_current();
+
+  if (conn != NULL) {
+    const struct bt_le_conn_param *param = BT_LE_CONN_PARAM(400, 800, 0, 500);
+    bt_conn_le_param_update(conn, param);
+  }
+}
+
+void connection_resume(void) {
+  struct bt_conn *conn = connection_get_current();
+
+  if (conn != NULL) {
+    const struct bt_le_conn_param *param = BT_LE_CONN_PARAM(6, 6, 0, 400);
+    bt_conn_le_param_update(conn, param);
+  }
+}
diff --git a/nordic/trezor/trezor-ble/src/ble/inc/ble/ble.h b/nordic/trezor/trezor-ble/src/ble/inc/ble/ble.h
index 0d48d9803..90a89fa3a 100644
--- a/nordic/trezor/trezor-ble/src/ble/inc/ble/ble.h
+++ b/nordic/trezor/trezor-ble/src/ble/inc/ble/ble.h
@@ -26,3 +26,9 @@ bool ble_init(void);
 
 // Stop advertising
 void advertising_stop(void);
+
+// Set connection to suspended state- slower interval and so
+void connection_suspend(void);
+
+// Resume connection - faster interval
+void connection_resume(void);
diff --git a/nordic/trezor/trezor-ble/src/management/management.c b/nordic/trezor/trezor-ble/src/management/management.c
index fd267d86a..fd300beb6 100644
--- a/nordic/trezor/trezor-ble/src/management/management.c
+++ b/nordic/trezor/trezor-ble/src/management/management.c
@@ -194,10 +194,12 @@ static void process_command(uint8_t *data, uint16_t len) {
       LOG_INF("Suspend");
       trz_comm_suspend();
       advertising_stop();
+      connection_suspend();
       break;
     case MGMT_CMD_RESUME:
       LOG_INF("Resume");
       trz_comm_resume();
+      connection_resume();
       break;
     case MGMT_CMD_AUTH_CHALLENGE:
       LOG_INF("Challenge command");