Tag: linux

Linux 6.10 was released last Sunday, following its now well-known release cadence. As usual, head over to LWN.net to have some good summary of the important features merged in this kernel release: part 1 and part 2.

LWN also published an article on statistics of the 6.10 release cycle, and Bootlin shows up in the most active employers by changed lines, with 7746 lines changed by Bootlin engineers. According to ths Kernel Patch Statistics site, we contributed 110 changes, putting us as the 19th contributing company (counting “Unknown” and “Hobbyists” as companies).

Also, in addition to the 110 patches we contributed, some of our engineers are also maintainers of different subsystems, and as such they review/merge patches contributed by others:

• Alexandre Belloni reviewed/merged 19 patches for the I3C and RTC subsystems which he maintains
• Grégory Clement reviewed/merged 14 patches for the Marvell ARM and ARM64 platforms that he maintains
• Miquèl Raynal reviewed/merged 12 patches for the MTD subsystem, which he co-maintains

Continue reading “Linux 6.10 released, Bootlin contributions inside”

The Linux 6.8 kernel has been released on March 10 by Linus Torvalds. As usual, we definitely recommend the coverage by LWN of the merge window for this release cycle to get a good grasp on the most important new features: first half and second half. Some work from Bootlin is briefly mentioned in those articles, such as the support for Lantiq PEF2256 (FALC56) framers, Lantiq PEF2256 (FALC56) pin controllers, and Techwell TW9900 video decoders.

With a total of 135 commits contributed by Bootlin engineers during this release cycle, we have been much more active than for the previous 6.7 release. This allows Bootlin to show in the recently published Development statistics for 6.8, as the 17th contributing company by number of commits, and 13th contributing company by number of changed lines.

Continue reading “Linux 6.8 released, Bootlin contributions”

Linux 6.6 was released yesterday, so this is the time for our usual blog post about our contributions to this release. Before that, to get an overall idea of what went into Linux 6.6, we recommend reading the articles from LWN.net covering the Linux 6.6 merge window: part 1 and part 2. The KernelNewbies page is perhaps a little bit less rich than it used to be, but still relevant.

On our side, this time around we contributed 68 changes to this release:

• Alexandre Belloni, as the RTC subsystem maintainer, submitted a few asorted patches touching various drivers in this subsystem
• Alexis Lothoré pushed some patches extending the rzn1-a5psw Ethernet switch driver with VLAN support and port_bridge_flags support. These patches were initially written by Clément Léger but had not been accepted until now.
• Hervé Codina got his audio-iio-aux driver merged, which allows the ASoC subsystem (for audio devices) to use IIO devices, such as a potentiometer. This came together with a number of fixes/improvements in the IIO subsystem. Hervé also fixed some reference counting issues in several I2C mux drivers.
• Miquèl Raynal pushed to the finish line a patch written several years ago by Bootlin engineer Kamel Bouhara, who hadn’t been accepted until now. This patch adds a sysfs interface that allows to retrieve the reset reason on Microchip ARM platforms
• Luca Ceresoli fixed some issues in two DRM panel drivers and also fixed a regression in the NVidia Tegra camera interface driver
• Miquèl Raynal did a number of different, unrelated, contributions:
  • support for the EDT ET028013DMA display panel to the existing sitronix-st7789v driver, which required quite a few preparation changes
  • fix a clock polarity issue in the DRM driver for the display controller used in Microchip ARM platforms
  • improve many small aspects of the qcom NAND controller driver
  • improve the handling of nvmem layouts in the nvmem subsystem
  • fix an issue in the SJA1000 CAN controller driver that would cause the HW to stall after an overrun on some platforms
• Paul Kocialkowski contributed a few small asorted fixes in the media subsystem documentation

Here are the complete details of our contributions:

• Alexandre Belloni (5):
  • rtc: pcf2127: remove useless check
  • rtc: stop warning for invalid alarms when the alarm is disabled
  • rtc: sun6i: remove unnecessary message
  • rtc: twl: remove unnecessary messages
  • rtc: wm8350: remove unnecessary messages
• Alexis Lothoré (2):
  • net: dsa: rzn1-a5psw: remove redundant logs
  • dt-bindings: net: dsa: marvell: fix wrong model in compatibility list
• Clément Léger (3):
  • net: dsa: rzn1-a5psw: use a5psw_reg_rmw() to modify flooding resolution
  • net: dsa: rzn1-a5psw: add support for .port_bridge_flags
  • net: dsa: rzn1-a5psw: add vlan support
• Herve Codina (17):
  • ASoC: dt-bindings: Add audio-iio-aux
  • ASoC: dt-bindings: simple-card: Add additional-devs subnode
  • iio: inkern: Check error explicitly in iio_channel_read_max()
  • iio: consumer.h: Fix raw values documentation notes
  • iio: inkern: Remove the ‘unused’ variable usage in iio_channel_read_max()
  • iio: inkern: Fix headers inclusion order
  • minmax: Introduce {min,max}_array()
  • iio: inkern: Use max_array() to get the maximum value from an array
  • iio: inkern: Replace a FIXME comment by a TODO one
  • iio: inkern: Add a helper to query an available minimum raw value
  • ASoC: soc-dapm.h: Convert macros to return a compound literal
  • ASoC: codecs: Add support for the generic IIO auxiliary devices
  • ASoC: simple-card: Handle additional devices
  • ASoC: fsl: fsl_qmc_audio: Fix snd_pcm_format_t values handling
  • i2c: muxes: i2c-mux-pinctrl: Use of_get_i2c_adapter_by_node()
  • i2c: muxes: i2c-demux-pinctrl: Use of_get_i2c_adapter_by_node()
  • i2c: muxes: i2c-mux-gpmux: Use of_get_i2c_adapter_by_node()
• Kamel Bouhara (1):
  • power: reset: at91-reset: add sysfs interface to the power on reason
• Kory Maincent (2):
  • ethtool: Fix mod state of verbose no_mask bitset
  • Revert “ethtool: Fix mod state of verbose no_mask bitset”
• Luca Ceresoli (4):
  • drm/panel: db7430: remove unused variables
  • drm/panel: simple: Fix Innolux G156HCE-L01 LVDS clock
  • staging: media: tegra-video: fix infinite recursion regression
  • dt-bindings: trivial-devices: Fix MEMSIC MXC4005 compatible string
• Miquel Raynal (31):
  • dt-bindings: mtd: spi-nor: clarify the need for spi-nor compatibles
  • dt-bindings: mtd: Fix nand-controller.yaml license
  • of: module: Export of_device_uevent()
  • gpu: host1x: Stop open-coding of_device_uevent()
  • mtd: rawnand: qcom: Use the BIT() macro
  • mtd: rawnand: qcom: Use u8 instead of uint8_t
  • mtd: rawnand: qcom: Fix alignment with open parenthesis
  • mtd: rawnand: qcom: Fix the spacing
  • mtd: rawnand: qcom: Fix wrong indentation
  • mtd: rawnand: qcom: Fix a typo
  • mtd: rawnand: qcom: Early structure initialization
  • mtd: rawnand: qcom: Fix address parsing within ->exec_op()
  • dt-bindings: display: st7789v: Add the edt,et028013dma panel compatible
  • dt-bindings: display: st7789v: bound the number of Rx data lines
  • drm/panel: sitronix-st7789v: Use 9 bits per spi word by default
  • drm/panel: sitronix-st7789v: Clarify a definition
  • drm/panel: sitronix-st7789v: Add EDT ET028013DMA panel support
  • drm/panel: sitronix-st7789v: Check display ID
  • mtd: Clean refcounting with MTD_PARTITIONED_MASTER
  • drm: atmel-hlcdc: Support inverting the pixel clock polarity
  • mtd: spi-nor: Add support for sst26vf032b flash
  • nvmem: core: Create all cells before adding the nvmem device
  • nvmem: core: Return NULL when no nvmem layout is found
  • nvmem: core: Do not open-code existing functions
  • nvmem: core: Notify when a new layout is registered
  • i3c: master: svc: Describe member ‘saved_regs’
  • mtd: rawnand: marvell: Ensure program page operations are successful
  • mtd: rawnand: arasan: Ensure program page operations are successful
  • mtd: rawnand: pl353: Ensure program page operations are successful
  • ASoC: soc-generic-dmaengine-pcm: Fix function name in comment
  • can: sja1000: Always restart the Tx queue after an overrun
• Paul Kocialkowski (3):
  • media: doc: dev-encoder: Fixup whitespace before bold asterisks
  • media: doc: codec: Rename “Return fields” to “Returned fields” for consistency
  • media: doc: dev-encoder: Fixup type for ENUM_FRAMEINTERVALS

Linux 6.4 was released on June 25, just before the start of the Embedded Open Source Summit in Prague. As usual, lots of changes in Linux 6.4, and we recommend reading LWN coverage of the merge window (part 1, part 2). Sadly, the usual KernelNewbies page hasn’t received a lot of attention, contributions are probably welcome to revive this useful resource.

With 59 commits from Bootlin engineers, Bootlin is ranked as the #28 contributing company by number of commits for this 6.4 release, according to contribution statistics. Our main contributions have been:

• Alexis Lothoré and Clément Léger contributed a few fixes to the Renesas RZ/N1 A5PSW Ethernet switch driver
• Hervé Codina contributed a number of new drivers needed to support complex audio setups on some relatively old Freescale PowerPC 32-bit platforms: a driver for the Time Slot Assigner (TSA), a driver for the QUICC Multichannel Controller (QMC), and an ALSA driver that provides audio support over QMC. We have more contributions coming in this area, most notably to support HDLC network traffic over QMC.
• Kamel Bouhara added support for the TI TAS5733 audio codec in the existing tas571x driver
• Luca Ceresoli improved the fsl-ldb driver, used on NXP i.MX8MP and i.MX93 for the built-in DPI-to-LVDS encoder. Luca’s improvement allows to use LVDS channel 1 only, while the driver initially supported using either LVDS channel 0, or LVDS channel 0 and 1 combined.
• Maxime Chevallier contributed an improvement to the regmap code, which allows upshifting register addresses before performing operations
• Maxime Chevallier also contributed some small fixes to the phylink code related to previous work on QUSGMII support
• Miquèl Raynal contributed the support for Real-While-Write in the MTD SPI-NOR subsystem. This allows to perform read operations while erase/program operations are on-going, which helps to reduce read latencies. This of course only works on SPI NOR chips that support this feature.
• Miquèl Raynal contributed several improvements to the NVMEM subsystem. First, a brand new NVMEM driver capable of parsing the ONIE TLV information, as defined by the ONIE spec used on network equipment. Second, he contributed changes that allow NVMEM layout drivers to be compiled as kernel modules rather than being built-in

And the full details of our contributions:

• Alexis Lothoré (1):
  • net: dsa: rzn1-a5psw: fix STP states handling
• Clément Léger (4):
  • dt-bindings: soc: renesas: renesas.yaml: Add renesas,rzn1d400-eb compatible
  • clk: add missing of_node_put() in “assigned-clocks” property parsing
  • net: dsa: rzn1-a5psw: enable management frames for CPU port
  • net: dsa: rzn1-a5psw: disable learning for standalone ports
• Herve Codina (16):
  • dt-bindings: soc: fsl: cpm_qe: Add TSA controller
  • soc: fsl: cpm1: Add support for TSA
  • MAINTAINERS: add the Freescale TSA controller entry
  • powerpc/8xx: Use a larger CPM1 command check mask
  • dt-bindings: soc: fsl: cpm_qe: Add QMC controller
  • soc: fsl: cpm1: Add support for QMC
  • MAINTAINERS: add the Freescale QMC controller entry
  • dt-bindings: sound: Add support for QMC audio
  • ASoC: fsl: Add support for QMC audio
  • MAINTAINERS: add the Freescale QMC audio entry
  • dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Remove unneeded property
  • dt-bindings: soc: fsl: cpm_qe: cpm1-tsa: Remove unneeded property
  • soc: fsl: cpm1: qmc: Fix test dependency
  • ASoC: simple-card: Add missing of_node_put() in case of error
  • soc: fsl: cpm1: Fix TSA and QMC dependencies in case of COMPILE_TEST
  • serial: cpm_uart: Fix a COMPILE_TEST dependency
• Kamel Bouhara (2):
  • ASoC: tas571x: add tas5733 compatible
  • ASoC: tas571x: add support for TAS5733
• Luca Ceresoli (2):
  • drm: bridge: ldb: add missing \n in dev_warn() string
  • drm: bridge: ldb: add support for using channel 1 only
• Maxime Chevallier (4):
  • regmap: add a helper to translate the register address
  • regmap: allow upshifting register addresses before performing operations
  • net: phylink: report correct max speed for QUSGMII
  • net: phylink: use a dedicated helper to parse usgmii control word
• Miquel Raynal (30):
  • mtd: Avoid printing error messages on probe deferrals
  • mtd: Avoid magic values
  • net: mvpp2: Defer probe if MAC address source is not yet ready
  • mtd: spi-nor: Introduce the concept of bank
  • mtd: spi-nor: Add a macro to define more banks
  • mtd: spi-nor: Reorder the preparation vs. locking steps
  • mtd: spi-nor: Separate preparation and locking
  • mtd: spi-nor: Prepare the introduction of a new locking mechanism
  • mtd: spi-nor: Add a RWW flag
  • mtd: spi-nor: Enhance locking to support reads while writes
  • mtd: spi-nor: Fix a trivial typo
  • mtd: spi-nor: Delay the initialization of bank_size
  • mtd: spi-nor: macronix: Add support for mx25uw51245g with RWW
  • of: Fix modalias string generation
  • of: Update of_device_get_modalias()
  • of: Rename of_modalias_node()
  • of: Move of_modalias() to module.c
  • of: Move the request module helper logic to module.c
  • usb: ulpi: Use of_request_module()
  • of: device: Kill of_device_request_module()
  • nvmem: core: handle the absence of expected layouts
  • nvmem: core: request layout modules loading
  • nvmem: layouts: onie-tlv: Add new layout driver
  • MAINTAINERS: Add myself as ONIE tlv NVMEM layout maintainer
  • nvmem: Add macro to register nvmem layout drivers
  • nvmem: layouts: sl28vpd: Use module_nvmem_layout_driver()
  • nvmem: layouts: onie-tlv: Use module_nvmem_layout_driver()
  • nvmem: layouts: onie-tlv: Drop wrong module alias
  • MAINTAINERS: Update wpan tree
  • MAINTAINERS: Add wpan patchwork

Linux 6.2 was released a few days ago, and as usual we point our readers to the LWN coverage of the merge window (part 1 and part 2), or the traditional KernelNewbies page or alternatively the embedded focused CNX Software coverage.

At Bootlin, we contributed a total of 122 patches to this release, making Bootlin the 21st contributing company by number of commits according to statistics. Also Bootlin engineer Paul Kocialkowski appears in the top developers by changed lines in the Linux 6.2 statistics.

Continue reading “Linux 6.2 released, Bootlin contributions inside”