Linux 5.16操作系统内核更新一览

Linux 5.16内核在ARM、RISC-V、MIPS架构处理器的主要更新。

Arm changes in Linux 5.16

Allwinner
- Allwinner R329 – Watchdog driver
- Device tree updates:
  - DT schema fixes
  - I2S support for the R40
  - HDMI support for the Pinetab
  - devfreq support for the A64 GPU
Rockchip
- Add support for Power Off to Rockchip RK817 PMIC
- ASoC – Add support for Rockchip RV1126 and RK3568
- Adds Rockchip RK3566/RK3568
- Merge v5 of Rockchip I2S/TDM controller
Amlogic
- Amlogic Meson6, Meson8, Meson8b and Meson8m2 have an ARC core to aid in resuming the system after suspend, a new remoteproc driver for booting this core is introduced.
- Clock driver – Update video path related clocks for Amlogic meson8
- Minor cleanups, and the addition of the S905Y2 SoC ID
- Amlogic ARM64 DT changes for Linux 5.16:
  - add Ethernet PHY reset line for ODROID-C4/HC4
  - add audio playback nodes to rbox-pro
  - Fix the pwm regulator supply properties
  - meson-g12b-odroid-n2: add missing 5v regulator gpio
Samsung
- Add support for Samsung Exynos Auto V9
- clk driver updates
  - Initial clock driver for the Exynos850 SoC
  - Refactoring of the CPU clock code and conversion of Exynos5433 CPU clock driver to the platform driver
  - A few conversions to devm_platform_ioremap_resource()
  - Updates of the Samsung Kconfig help text
- Minor fix for a theoretical issue when handling IRQ setup code errors in S3C24xx and cleanup for S3C64xx.
- DTS ARM changes for Linux 5.16
  - Minor cleanups – from undocumented or unused properties, coding style
  - Add chassis-type property
- DTS ARM64 changes
  - Match Exynos5433 DTS with dtschema.
  - Add basic support for Exynos Auto v9 SoC and SADK (Samsung Automotive Development Kit) board. The Exynos Auto v9 is a design for automotive for In-vehicle Infotainments (IVI) and Advanced Driver-Assistance Systems (ADAS).
  - Add chassis-type property.
  - Add ChipID node to ExynosAutov9 DTSI.
Qualcomm
- Support for Qualcomm Snapdragon 690 (aka SM6350)
- Support for Snapdragon 750G (SM7225)
- Pinctrl
  - New subdrivers for the Qualcomm SM6350, QCM2290, and PM6350
  - Convert the Qualcomm PMIC SSBI and SPMI MPP GPIO driver to use hierarchical interrupts.
  - Convert the Qualcomm PMIC MPP device tree bindings to YAML
  - Fix a Kconfig issue in the Qualcomm driver, implement some Qualcomm SDM845 dual-edge errata, fix register offsets for UFS and SDC in the Qualcomm SM8350 driver
- Clock driver
  - GCC and RPMcc support for Qualcomm QCM2290 SoCs
  - GCC support for Qualcomm MSM8994/MSM8992 SoCs
  - LPASSCC and CAMCC support for Qualcomm SC7280 SoCs
- Add entry for Qualcomm NAND controller driver
- Qualcomm PCIe controller driver:
  - Add SC8180x compatible string
  - Add endpoint controller driver and DT binding
  - Restructure to use of_device_get_match_data()
  - Add SC7280-specific pcie_1_pipe_clk_src handling
- Networking
  - Qualcomm Ethernet switch (qca8k): support for QCA8328
  - Various updates to Qualcomm WiFi (ath11k) – Support for 80P80 and 160 MHz bandwidths, support channel 2 in 6 GHz band, etc…
  - Qualcomm phone SoC WiFi (wcn36xx) – Enable Idle Mode Power Save (IMPS) to reduce power consumption during idle
- SPI driver – Qualcomm SC7280 and SC7180
- PHY – Qualcomm QCM2290 USB2 and USB3 support
- Added Qualcomm “sleep stats” driver, which aids the efforts of bringing various Qualcomm platforms into low power mode.
- ARM64 DTS updates for Linux 5.16
  - Cleanup fixes for MSM8916
  - MSM8998 – Descriptions for the multimedia clock controller and iommu, GPU and its dedicated IOMMU.
  - IPA6018 – Added USB controller and PHY
  - IPQ8074 – Description of the SPMI controller.
  - SC7280 gains QSPI, low speed (i2c/spi/uart), GPU, thermal zones, modem, CPU topology and updated memory map.
  - SDM845 – Increase the throttling temperature of the hardware from ~70C to 95C, with up to 30% improvement in benchmarks as result. Relying on hardware throttling and
    thermal pressure, the CPU cooling devices are dropped.
  - Etc..
- ARM64 defconfig updates:
  - Disabled firmware loads userspace fallback
  - Enables the new limits driver, which controls the hardware-based thermal mitigation on a range of Qualcomm platforms.
  - Enables prima/pronto WiFi and Bluetooth drivers
  - Enable SC7280 drivers needed to boot the platform
MediaTek
- PCIe – Add MediaTek MT7621 PCIe host controller driver and DT binding
- MediaTek WiFi (mt76)
  - MT7921 – ASPM, 6GHz, SDIO, and testmode support
  - MT7915 – LED and TWT support
- Bluetooth driver support for MediaTek MT7922 and MT7921
- Mediatek improves support for the MT81xx SoCs used in Chromebooks as well as the MT76xx networking SoCs

Changelog for RISC-V in Linux 5.16

Some changes in Linux 5.16 specific to the RISC-V architecture

Allwinner D1 – Watchdog driver
DT updates for the SiFive HiFive Unmatched, that fix the regulator handling
A pair of fixes for both the SiFive Hifive Unleashed and Unmatched, that correctly hook up the MMC card detect signal.
Support for time namespaces in the VDSO, along with some associated cleanups.
Support for building rv32 randconfigs.
Improvements to the XIP port that allow larger kernels to function
Various device tree cleanups for both the SiFive and Microchip boards
A handful of defconfig updates, including enabling Nouveau (That’s GPU support!).

MIPS in Linux 5.16

There were also a few minor changes for the MIPS architecture:

Added printing of CPU options for /proc/cpuinfo
Removed support for Netlogic SOCs
Fixes and cleanup
- Build fix for ZSTD enabled configs
- Fix for preempt warning
- Fix for loongson FTLB detection
- Fix for page table level selectionKernelNewbies website
- Wire futex_waitv syscall
- Build fixes for lantiq and bcm63xx configs
- yamon-dt bugfix