Re: [PATCH v2 0/2] Add support for Infineon/Intel XMM6260 modem

[Svyatoslav Ryhel]

сб, 23 трав. 2026 р. о 11:44 Svyatoslav Ryhel <clamor95@xxxxxxxxx> пише:
>
> The Infineon/Intel XMM6260 is a 3G-focused, slim modem platform designed
> for smartphones, data cards, and Machine-to-Machine (M2M) applications.
>
> The modem is typically connected via the application processor's USB line
> in HSIC mode. To function correctly, the modem must control this line, as
> it requires precise timing to initiate or de-initialize the USB connection.
> This control is necessary to successfully enumerate the next stage of the
> USB device loader (moving from firmware loading to the actual device
> interface for example).
>
> Patchset adds support for the generic portion of the Infineon XMM6260
> baseband modem, which was used in many Tegra-, OMAP-, and Exynos-based
> devices circa 2012. This driver provides generic power sequences,
> manages initial communication with the application processor, handles the
> SoC-specific modem powersequence, and verifies that the modem USB device
> appears correctly.
>
> While current support is relatively basic, this configuration already
> allows the modem device to appear in the dmesg of my device
> (LG Optimus Vu (P895)):
>
> [    9.427014] ci_hdrc ci_hdrc.1: EHCI Host Controller
> [    9.431488] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
> [    9.457197] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
> [    9.460370] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.16
> [    9.468470] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> [    9.475597] usb usb1: Product: EHCI Host Controller
> [    9.480508] usb usb1: Manufacturer: Linux 6.16.0+ ehci_hcd
> [    9.485913] usb usb1: SerialNumber: ci_hdrc.1
> [    9.490862] hub 1-0:1.0: USB hub found
> [    9.494005] hub 1-0:1.0: 1 port detected
> [    9.657191] usb 1-1: new high-speed USB device number 2 using ci_hdrc
> [    9.844726] usb 1-1: New USB device found, idVendor=1519, idProduct=0020, bcdDevice=12.74
> [    9.850530] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [    9.857594] usb 1-1: Product: HSIC Device
> [    9.861606] usb 1-1: Manufacturer: Comneon
> [    9.865627] usb 1-1: SerialNumber: 0123456789
> [    9.908739] cdc_acm 1-1:1.0: ttyACM0: USB ACM device
>
> This patchset is a part of larger series aiming to bring XMM6260 modem
> support for Tegra devices:
> https://lore.kernel.org/lkml/20260511135703.62470-1-clamor95@xxxxxxxxx/
>
> ---
> Changes in v2:
> - changed phy to pwrseq in schema
> - adjusted Kconfig dependencies
> - implemented bitmap for modem state tracking
> - switched from phy to power sequencing
> - in notifier added chech to filter only USB events
> - in notifier added USB_DEVICE_REMOVE
> - added tracking for regulator, rfkill access, usb device
>   presence and poweroff calls using bitops
> - moved pseq on call from work to irq handler
> - improved rfkill registration logic
> ---
>
> Svyatoslav Ryhel (2):
>   dt-bindings: net: Document Infineon/Intel XMM6260 modem
>   net: usb: Add Infineon XMM6260 Baseband modem support
>
>  .../bindings/net/infineon,xmm6260.yaml        |  74 ++++
>  drivers/net/usb/Kconfig                       |  15 +
>  drivers/net/usb/Makefile                      |   1 +
>  drivers/net/usb/baseband-xmm6260.c            | 378 ++++++++++++++++++
>  4 files changed, 468 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/infineon,xmm6260.yaml
>  create mode 100644 drivers/net/usb/baseband-xmm6260.c
>
> --
> 2.51.0
>

Hello there! There will be no v3. Sorry for disturbing LKML with 15
year old obsolete tech. My mistake.