linux/drivers/soc/tegra/cbb, branch master

soc/tegra: cbb: Fix cross-fabric target timeout lookup

2026-03-27T14:30:54Z

When a fabric receives an error interrupt, the error may have occurred on a different fabric. The target timeout lookup was using the wrong base address (cbb->regs) with offsets from a different fabric's target map, causing a kernel page fault. Unable to handle kernel paging request at virtual address ffff80000954cc00 pc : tegra234_cbb_get_tmo_slv+0xc/0x28 Call trace: tegra234_cbb_get_tmo_slv+0xc/0x28 print_err_notifier+0x6c0/0x7d0 tegra234_cbb_isr+0xe4/0x1b4 Add tegra234_cbb_get_fabric() to look up the correct fabric device using fab_id, and use its base address for accessing target timeout registers. Fixes: 25de5c8fe0801 ("soc/tegra: cbb: Improve handling for per SoC fabric data") Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Fix incorrect ARRAY_SIZE in fabric lookup tables

2026-03-27T14:30:50Z

Fix incorrect ARRAY_SIZE usage in fabric lookup tables which could cause out-of-bounds access during target timeout lookup. Fixes: 25de5c8fe0801 ("soc/tegra: cbb: Improve handling for per SoC fabric data") Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Set ERD on resume for err interrupt

2026-03-27T14:30:46Z

Set the Error Response Disable (ERD) bit to mask SError responses and use interrupt-based error reporting. When the ERD bit is set, inband error responses to the initiator via SError are suppressed, and fabric errors are reported via an interrupt instead. The register is set during boot but the info is lost during system suspend and needs to be set again on resume. Fixes: fc2f151d2314 ("soc/tegra: cbb: Add driver for Tegra234 CBB 2.0") Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Add support for CBB fabrics in Tegra238

2026-03-27T14:24:54Z

Add support for CBB 2.0 based fabrics in Tegra238 SoC using DT. Fabrics reporting errors are: CBB, AON, BPMP, APE. Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: Resolve a spelling error in the tegra194-cbb.c

2025-11-14T15:16:20Z

Fix a typo spotted during code reading. Signed-off-by: Bruno Sobreira França Reviewed-by: Jon Hunter Acked-by: Uwe Kleine-König Reviewed-by: Herve Codina Signed-off-by: Thierry Reding

soc/tegra: cbb: Add support for CBB fabrics in Tegra254

2025-07-09T12:29:19Z

Add support for CBB 2.0 based fabrics in Tegra254 SoC using ACPI. Fabrics reporting errors are: C2C, GPU and Display_Cluster. Tegra254 uses a hardware based lookup to get target node address, so the target_map tables for each fabric are no longer needed. Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Add support for CBB fabrics in Tegra264

2025-07-09T12:28:55Z

Add support for CBB 2.0 based fabrics in Tegra264 SoC using DT. Fabrics reporting errors are: SYSTEM, TOP0, UPHY0 and VISION. Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Support HW lookup to get timed out target address

2025-07-09T12:28:07Z

Add support for hardware based lookup to get the address of the timed out target node. This features is added in upcoming SoCs and avoids the need for creating per fabric target_map tables in the driver. Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Improve handling for per SoC fabric data

2025-07-09T12:27:41Z

Improve handling for the per SoC fabrics and targets. The below changes make them more flexible and ready for future SoC's. - Added SoC prefix to Fabric_ID enums. - Rename *lookup_target_timeout() to *sw_lookup_target_timeout() to make it separate from HW based lookup function to be added later. - Moved target_map within fabric_lookup table to make it easy to check whether SW vs HW lookup is supported and handle accordingly. - Slight improvements to some error prints. Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding

soc/tegra: cbb: Make error interrupt enable and status per SoC

2025-07-09T12:27:14Z

Make the error interrupt enable and error status fields as per SoC. Both of these fields can change for different SoC's. Moving them to per SoC data helps to set or clear the required bits only for a SoC. Signed-off-by: Sumit Gupta Signed-off-by: Thierry Reding