patches: Add kernel 7.0 support with Surface Pro 10 camera patches#2156
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djmulder wants to merge 9 commits into
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patches: Add kernel 7.0 support with Surface Pro 10 camera patches#2156djmulder wants to merge 9 commits into
djmulder wants to merge 9 commits into
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Add patches/7.0/ based on 6.19 patch set with the following additions to 0013-cameras.patch: - Add Sony IMX681 sensor driver supporting both Surface Pro 10 (MTL, 380.8 MHz C-PHY) and Surface Pro 11 (LNL, 969.6 MHz D-PHY) - Add ipu-bridge entries for SONY0681 (C-PHY, dual freq) and OVTID858 - Add INT3472 GPIO type 0x08 (DVDD) and 0x10 (DOVDD) support, replacing the SP9 magic number workaround with proper constants - Add INT3472 CLK_IS_CRITICAL and always-on regulator constraints - Add OV13858 reset GPIO handling for Surface Pro 10 Tested on Surface Pro 10 (MSHW0520/MSHW0521) with Ubuntu 26.04 / kernel 7.0.0-15-generic.
Remove development debug messages from SP10 camera patches: - Remove verbose dev_info calls from imx681, ov13858, int3472 - Downgrade ipu-bridge sensor connection messages to dev_dbg - Keep meaningful messages (reset GPIO toggle, probe success)
The OV13858 rear camera on Surface Pro 10 (Microsoft Surface Pro 10 for Business) is mounted 180° rotated. Add a DMI match entry so ipu-bridge reports the correct rotation to libcamera/v4l2. Patchset: cameras
Adds work-in-progress patch for IPU6EP-MTL C-PHY support needed for the IMX681 front camera on Surface Pro 10 for Business. The patch implements the C-PHY detection and routing infrastructure but still needs correct DWC PHY IFC register values for C-PHY mode.
All kernel driver infrastructure correct. Blocked on Linux firmware not supporting C-PHY. See contrib/surface-pro-10-cphy/README.md.
HUB_FW register investigation confirmed: HUB_FW[4] stays 0 even for working D-PHY port 0, so it is not the blocker. The firmware simply does not process C-PHY data for PORT_4/src=4, and rejects PORT_6/src=6 with FW_INTERNAL_CONSISTENCY error. All kernel infrastructure correct.
…se=0 ETL trace analysis confirmed Windows driver uses: src=6 (CSI2_3PH_CPHY_PORT0), vc=0, isl_use=0, sensor_type=14, nlanes=2 This is identical to what we tried. Linux firmware rejects src=6 with FW_INTERNAL_CONSISTENCY error. isl_use=1/2/3 cause INVALID_STREAM_CONFIG. The Linux firmware binary is confirmed as the sole blocker.
Key findings from extended debugging session: 1. SIP registers use isp->base (full BAR0), not isys->pdata->base (ISYS sub-region) 2. SIP1_RXA/RXB_CTRL bit 0 can be written but doesn't affect data flow 3. FB_PORT_CFG (0x238054) is firmware-controlled read-only 4. SETTLE timing registers at SIP1+0x18 don't accept writes for 2-trio config 5. Writing SIP registers corrupts hardware state across reboots - DO NOT write 6. CTRL0_IRQ_STATUS and UNISPART_IRQ both read 0 for working D-PHY (firmware clears) 7. D-PHY timing (SETTLE_D1=0x37) is set by firmware, not driver Root cause confirmed: firmware does not process C-PHY data for src=4. All kernel-side hardware is correctly configured. Awaiting firmware update.
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This PR adds patches/7.0/ based on the 6.19 patch set, with the following
additions to 0013-cameras.patch for Microsoft Surface Pro 10 (Meteor Lake):
New driver:
C-PHY) and Surface Pro 11 (LNL, 969.6 MHz D-PHY) with platform-specific
PLL selection at stream-on time
ipu-bridge:
INT3472:
constants, replacing the SP9 magic number workaround
OV13858:
Tested on Surface Pro 10 for Business (MSHW0520/MSHW0521), Ubuntu 26.04,
kernel 7.0.0-15-generic. Both sensors probe successfully. Rear camera
produces frames (ISP tuning pending). Front camera probes but produces
black frames pending C-PHY support in ipu6-isys-dwc-phy.c.