diff --git a/.github/workflows/circuitpython.yml b/.github/workflows/circuitpython.yml
index 2adcb901..fca03ba0 100644
--- a/.github/workflows/circuitpython.yml
+++ b/.github/workflows/circuitpython.yml
@@ -210,7 +210,7 @@ jobs:
         run: timeout 300 ./builds/circuitpython/unix/coverage/micropython modules/mdns/tests/test_mdns.py
 
   # The ESP32-P4 host engine on CircuitPython: usbhost's C compiled against
-  # CircuitPython's own ESP-IDF 6 and Espressif's usb component, for the
+  # CircuitPython's own ESP-IDF 6.1 and Espressif's usb component, for the
   # DEV-KIT's board cell. Nothing else in CI compiles this path, since the
   # unix port builds usbhost to nothing, and a change to the shared engine
   # sources (modules/usbhost/src) can break it with every other check green.
diff --git a/deps.lock b/deps.lock
index c1bcac78..47c8df8b 100644
--- a/deps.lock
+++ b/deps.lock
@@ -16,9 +16,9 @@ SDL2      https://github.com/libsdl-org/SDL/releases/download/release-2.30.10/SD
 espressif__tinyusb https://github.com/micropython/tinyusb-espressif.git                                     v0.21.0.1-micropython1
 # CircuitPython is the second interpreter, and the one pin that is a source
 # tree rather than a toolchain. Always our own checkout in deps/, never a link
-# to a sibling. 11.0.0-alpha.1 is commit 520805e12, the first release of the
-# 11.0 line, whose core is MicroPython 1.29, like UPSTREAM.
-circuitpython https://github.com/adafruit/circuitpython.git                                                  11.0.0-alpha.1
+# to a sibling. 11.0.0-alpha.2 is commit d53b2277c, whose core is MicroPython
+# 1.29, like UPSTREAM, and whose espressif port moved to ESP-IDF 6.1.
+circuitpython https://github.com/adafruit/circuitpython.git                                                  11.0.0-alpha.2
 # ESP-IDF components for cameraif on CircuitPython's espressif port: the camera
 # sensor drivers and the two components they need, from Espressif's component
 # registry, at the versions MicroPython's P4 build resolves. CircuitPython
diff --git a/docs/build-plan.md b/docs/build-plan.md
index 5242da1f..3dd295e7 100644
--- a/docs/build-plan.md
+++ b/docs/build-plan.md
@@ -331,7 +331,7 @@ interpreter is shared: the module names and `modules.lock`, the workspace
 links, the output layout and the build record. What differs is one function:
 
 - **The checkout.** CircuitPython is pinned in `deps.lock` like a toolchain
-  (`11.0.0-alpha.1`, whose core is MicroPython 1.29) and cloned into
+  (`11.0.0-alpha.2`, whose core is MicroPython 1.29) and cloned into
   `deps/circuitpython`, always our own clone, never a link to a sibling
   checkout. A build fetches only the submodules its target needs, with
   CircuitPython's own `tools/ci_fetch_deps.py` (a board's name, or `tests`
@@ -347,7 +347,7 @@ links, the output layout and the build record. What differs is one function:
   objects under a directory named like the module's, and two worktrees
   checked out under the same branch name would otherwise share one.
 - **espressif brings its own ESP-IDF.** CircuitPython's espressif port builds
-  with the ESP-IDF in `ports/espressif/esp-idf` (6.0 for 11.0.0-alpha.1), not
+  with the ESP-IDF in `ports/espressif/esp-idf` (6.1 for 11.0.0-alpha.2), not
   the `esp-idf` in `deps.lock`. Before make, the build initialises that tree's
   submodules shallowly (ESP-IDF's CMake would otherwise clone them with their
   whole history, gigabytes for `esp32-wifi-lib` alone), runs its `install.sh`
@@ -389,7 +389,7 @@ links, the output layout and the build record. What differs is one function:
   of each it passes Linux's 128 KB limit on one argument.
 
 The banner is CircuitPython's, unchanged: `Adafruit CircuitPython
-11.0.0-alpha.1 on <date>; <board name> with <chip>`. A module that has to
+11.0.0-alpha.2 on <date>; <board name> with <chip>`. A module that has to
 behave differently here can test `CIRCUITPY`, which every CircuitPython port
 sets, unix included; pygraphics also passes its own define from its
 `micropython.mk`, so it knows it came in as a user C module and not through
diff --git a/modules/displayif/UPSTREAM b/modules/displayif/UPSTREAM
index c209e369..aadddee3 100644
--- a/modules/displayif/UPSTREAM
+++ b/modules/displayif/UPSTREAM
@@ -11,9 +11,9 @@ CI builds the unix port from that pin. Nothing here repeats it, so it can't go s
   Verify locally with: git -C <your micropython checkout> rev-parse HEAD   # matches ../../UPSTREAM
 
 ## CircuitPython (usdl2 desktop path only, as a user C module)
-Tested against: 11.0.0-alpha.1 (CircuitPython 11 is the first line whose
+Tested against: 11.0.0-alpha.2 (CircuitPython 11 is the first line whose
 USER_C_MODULES block matches MicroPython 1.29's)
-  https://github.com/adafruit/circuitpython @ 520805e12
+  https://github.com/adafruit/circuitpython @ d53b2277c
 
 ## SDL2 (desktop usdl2 backend)
 Minimum: >= 2.0 (SDL_* API used by src/ports/desktop/usdl2/)
diff --git a/patches/circuitpython/0006-espressif-esp-idf-components-a-user-c-module-asks-for.patch b/patches/circuitpython/0006-espressif-esp-idf-components-a-user-c-module-asks-for.patch
index e292671b..6d573537 100644
--- a/patches/circuitpython/0006-espressif-esp-idf-components-a-user-c-module-asks-for.patch
+++ b/patches/circuitpython/0006-espressif-esp-idf-components-a-user-c-module-asks-for.patch
@@ -26,9 +26,9 @@ is in the firmware.
 diff --git a/ports/espressif/CMakeLists.txt b/ports/espressif/CMakeLists.txt
 --- a/ports/espressif/CMakeLists.txt
 +++ b/ports/espressif/CMakeLists.txt
-@@ -8,6 +8,20 @@
- set(COMPONENTS bt driver esp_driver_dac esp_driver_gpio esp_driver_gptimer esp_driver_i2c esp_driver_i2s esp_driver_ledc esp_driver_pcnt esp_driver_rmt esp_driver_sdmmc esp_driver_spi esp_driver_touch_sens esp_driver_tsens esp_driver_uart esp-tls esp_adc esp_event esp_netif esp_psram esp_security esp_wifi esptool_py freertos log lwip main mbedtls mdns pthread soc ulp wpa_supplicant esp_lcd vfs esp_stdio sdmmc esp-camera)
- set(EXTRA_COMPONENT_DIRS "esp-protocols/components/mdns" "esp-camera")
+@@ -13,6 +13,20 @@ if(CIRCUITPY_ESP_HOSTED)
+     list(APPEND COMPONENTS esp-hosted)
+ endif()
  
 +# ESP-IDF components a user C module needs that this list leaves out
 +# (USER_ESP_IDF_COMPONENTS, which the module's micropython.mk adds to), and
@@ -45,12 +45,12 @@ diff --git a/ports/espressif/CMakeLists.txt b/ports/espressif/CMakeLists.txt
 +list(REMOVE_DUPLICATES COMPONENTS)
 +
  include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+ set(ENV{ESP_IDF_VERSION} "${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}")
  project(circuitpython)
- 
 diff --git a/ports/espressif/Makefile b/ports/espressif/Makefile
 --- a/ports/espressif/Makefile
 +++ b/ports/espressif/Makefile
-@@ -879,13 +879,19 @@
+@@ -935,13 +935,19 @@ endif
  
  SDKCONFIGS := esp-idf-config/sdkconfig.defaults;$(DEBUG_SDKCONFIG);$(FLASH_SIZE_SDKCONFIG);$(FLASH_MODE_SDKCONFIG);$(FLASH_SPEED_SDKCONFIG);$(PSRAM_SDKCONFIG);$(PSRAM_SIZE_SDKCONFIG);$(PSRAM_MODE_SDKCONFIG);$(PSRAM_SPEED_SDKCONFIG);$(BLE_SDKCONFIG)$(NATIVE_SDKCONFIG);$(TARGET_SDKCONFIG);boards/$(BOARD)/sdkconfig
  
@@ -66,12 +66,12 @@ diff --git a/ports/espressif/Makefile b/ports/espressif/Makefile
  QSTR_GLOBAL_REQUIREMENTS += $(BUILD)/esp-idf/config/sdkconfig.h
  $(BUILD)/esp-idf/config/sdkconfig.h: boards/$(BOARD)/sdkconfig boards/$(BOARD)/mpconfigboard.mk CMakeLists.txt | $(BUILD)/esp-idf
  	$(STEPECHO) "Create $@"
--	$(Q)env IDF_PATH=$(IDF_PATH) IDF_COMPONENT_MANAGER=0 cmake -S . -B $(BUILD)/esp-idf -DSDKCONFIG=$(BUILD)/esp-idf/sdkconfig -DSDKCONFIG_DEFAULTS="$(SDKCONFIGS)" -DCMAKE_TOOLCHAIN_FILE=$(IDF_PATH)/tools/cmake/toolchain-$(IDF_TARGET).cmake -DIDF_TARGET=$(IDF_TARGET) -GNinja
-+	$(Q)env IDF_PATH=$(IDF_PATH) IDF_COMPONENT_MANAGER=0 cmake -S . -B $(BUILD)/esp-idf -DSDKCONFIG=$(BUILD)/esp-idf/sdkconfig -DSDKCONFIG_DEFAULTS="$(SDKCONFIGS)" -DCMAKE_TOOLCHAIN_FILE=$(IDF_PATH)/tools/cmake/toolchain-$(IDF_TARGET).cmake -DIDF_TARGET=$(IDF_TARGET) $(USER_ESP_IDF_CMAKE_ARGS) -GNinja
+-	$(Q)env IDF_PATH=$(IDF_PATH) IDF_COMPONENT_MANAGER=0 cmake -S . -B $(BUILD)/esp-idf -DSDKCONFIG=$(BUILD)/esp-idf/sdkconfig -DSDKCONFIG_DEFAULTS="$(SDKCONFIGS)" -DCMAKE_TOOLCHAIN_FILE=$(IDF_PATH)/tools/cmake/toolchain-$(IDF_TARGET).cmake -DIDF_TARGET=$(IDF_TARGET) -DCIRCUITPY_ESP_HOSTED=$(CIRCUITPY_ESP_HOSTED) -GNinja
++	$(Q)env IDF_PATH=$(IDF_PATH) IDF_COMPONENT_MANAGER=0 cmake -S . -B $(BUILD)/esp-idf -DSDKCONFIG=$(BUILD)/esp-idf/sdkconfig -DSDKCONFIG_DEFAULTS="$(SDKCONFIGS)" -DCMAKE_TOOLCHAIN_FILE=$(IDF_PATH)/tools/cmake/toolchain-$(IDF_TARGET).cmake -DIDF_TARGET=$(IDF_TARGET) -DCIRCUITPY_ESP_HOSTED=$(CIRCUITPY_ESP_HOSTED) $(USER_ESP_IDF_CMAKE_ARGS) -GNinja
  	$(Q)$(PYTHON) tools/check-sdkconfig.py \
  		CIRCUITPY_DUALBANK=$(CIRCUITPY_DUALBANK) \
  		CIRCUITPY_STORAGE_EXTEND=$(CIRCUITPY_STORAGE_EXTEND) \
-@@ -996,6 +1002,21 @@
+@@ -1124,6 +1130,21 @@ endif
  ifneq ($(CIRCUITPY_SDIOIO),0)
  	ESP_IDF_COMPONENTS_LINK += sdmmc esp_driver_sdmmc esp_driver_sd_intf esp_hal_sd
  endif
@@ -96,7 +96,7 @@ diff --git a/ports/espressif/Makefile b/ports/espressif/Makefile
 diff --git a/ports/espressif/supervisor/port.c b/ports/espressif/supervisor/port.c
 --- a/ports/espressif/supervisor/port.c
 +++ b/ports/espressif/supervisor/port.c
-@@ -413,6 +413,9 @@
+@@ -436,6 +436,9 @@ void *esp_native_code_commit(void *buf, size_t len, void *reloc) {
  }
  #endif
  
@@ -106,7 +106,7 @@ diff --git a/ports/espressif/supervisor/port.c b/ports/espressif/supervisor/port
  void reset_port_early(void) {
      // esp-camera adds an I2C device on the ESP I2C bus, and keeps it there. This
      // is unlike busio.I2C, which adds and removes the device on each operation.
-@@ -421,6 +424,13 @@
+@@ -444,6 +447,13 @@ void reset_port_early(void) {
      #if CIRCUITPY_ESPCAMERA
      espcamera_reset();
      #endif
diff --git a/patches/circuitpython/0007-audiomixer-level-one-passes-samples-through-unchanged.patch b/patches/circuitpython/0007-audiomixer-level-one-passes-samples-through-unchanged.patch
deleted file mode 100644
index 2b0affaa..00000000
--- a/patches/circuitpython/0007-audiomixer-level-one-passes-samples-through-unchanged.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-audiomixer: level 1.0 passes samples through unchanged without ARM
-
-On ARM Cortex-M4 and up, Mixer.c multiplies a sample by a voice's level
-with smulwb, which is exact. Every other build (unix, the Xtensa ESP32
-ports) fell back to a float divide by (1 << 15) - 1. The level is a Q15
-number where 1.0 is 32768, so a voice at level 1.0 had a gain of
-32768/32767, and any sample above about 32740 gained a step. A bare mixer
-turned -32752 into -32753.
-
-A level of exactly 1.0 now copies the sample. Every other level keeps
-the float multiply it had, so a quieter voice scales as before.
-
-diff --git a/shared-module/audiomixer/Mixer.c b/shared-module/audiomixer/Mixer.c
-index 464117f..c7109c7 100644
---- a/shared-module/audiomixer/Mixer.c
-+++ b/shared-module/audiomixer/Mixer.c
-@@ -108,8 +108,14 @@ static inline uint32_t mult16signed(uint32_t val, int32_t lomul, int32_t himul)
-     #else
-     uint32_t result = 0;
-     for (int8_t i = 0; i < 2; i++) {
--        float mod_mul = (float)(i ? himul : lomul) / (float)((1 << 15) - 1);
-+        int32_t mul = i ? himul : lomul;
-         int16_t ai = (val >> (sizeof(uint16_t) * 8 * i));
-+        if (mul == (1 << 15)) {
-+            // Level 1.0 passes the sample through unchanged.
-+            result |= (((uint32_t)ai) & 0xffff) << (sizeof(int16_t) * 8 * i);
-+            continue;
-+        }
-+        float mod_mul = (float)mul / (float)((1 << 15) - 1);
-         int32_t intermediate = (int32_t)(ai * mod_mul);
-         if (intermediate > SHRT_MAX) {
-             intermediate = SHRT_MAX;