From e24328974a88aa8541e94e8bb8dfa2ade1b3c45d Mon Sep 17 00:00:00 2001 From: Donggeun Yoo Date: Wed, 2 Sep 2026 00:21:26 +0900 Subject: iio: proximity: vl53l0x-i2c: claim direct mode for raw reads vl53l0x_read_raw() starts a single-shot ranging measurement and reads back the result. Once the triggered buffer is enabled the sensor runs in continuous mode and its data-ready interrupt is routed to the trigger, so a concurrent in_distance_raw read disturbs the streaming setup and never gets its completion, returning -ETIMEDOUT. The original submission claimed direct mode here, but it was dropped during review because the driver had no buffer support at the time [1]. Continuous (buffered) mode was later added without restoring the claim [2], reintroducing the conflict. Reject direct reads while buffered capture is active by claiming direct mode around the measurement, as the vl53l1x sibling already does. Fixes: 762186c6e7b1 ("iio: proximity: vl53l0x-i2c: Added continuous mode support") Link: https://lore.kernel.org/linux-iio/20180911160300.GA9212@himanshu-Vostro-3559/ [1] Link: https://lore.kernel.org/linux-iio/20240909101508.263085-3-abhashkumarjha123@gmail.com/ [2] Signed-off-by: Donggeun Yoo Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron --- .../PCI/endpoint/function/binding/pci-ntb.rst | 38 ++++++++++++++++++++++ .../PCI/endpoint/function/binding/pci-test.rst | 26 +++++++++++++++ 2 files changed, 64 insertions(+) create mode 100644 Documentation/PCI/endpoint/function/binding/pci-ntb.rst create mode 100644 Documentation/PCI/endpoint/function/binding/pci-test.rst (limited to 'Documentation/PCI/endpoint/function') diff --git a/Documentation/PCI/endpoint/function/binding/pci-ntb.rst b/Documentation/PCI/endpoint/function/binding/pci-ntb.rst new file mode 100644 index 000000000..40253d3d5 --- /dev/null +++ b/Documentation/PCI/endpoint/function/binding/pci-ntb.rst @@ -0,0 +1,38 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================== +PCI NTB Endpoint Function +========================== + +1) Create a subdirectory to pci_epf_ntb directory in configfs. + +Standard EPF Configurable Fields: + +================ =========================================================== +vendorid should be 0x104c +deviceid should be 0xb00d for TI's J721E SoC +revid don't care +progif_code don't care +subclass_code should be 0x00 +baseclass_code should be 0x5 +cache_line_size don't care +subsys_vendor_id don't care +subsys_id don't care +interrupt_pin don't care +msi_interrupts don't care +msix_interrupts don't care +================ =========================================================== + +2) Create a subdirectory to directory created in 1 + +NTB EPF specific configurable fields: + +================ =========================================================== +db_count Number of doorbells; default = 4 +mw1 size of memory window1 +mw2 size of memory window2 +mw3 size of memory window3 +mw4 size of memory window4 +num_mws Number of memory windows; max = 4 +spad_count Number of scratchpad registers; default = 64 +================ =========================================================== diff --git a/Documentation/PCI/endpoint/function/binding/pci-test.rst b/Documentation/PCI/endpoint/function/binding/pci-test.rst new file mode 100644 index 000000000..57ee866fb --- /dev/null +++ b/Documentation/PCI/endpoint/function/binding/pci-test.rst @@ -0,0 +1,26 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================== +PCI Test Endpoint Function +========================== + +name: Should be "pci_epf_test" to bind to the pci_epf_test driver. + +Configurable Fields: + +================ =========================================================== +vendorid should be 0x104c +deviceid should be 0xb500 for DRA74x and 0xb501 for DRA72x +revid don't care +progif_code don't care +subclass_code don't care +baseclass_code should be 0xff +cache_line_size don't care +subsys_vendor_id don't care +subsys_id don't care +interrupt_pin Should be 1 - INTA, 2 - INTB, 3 - INTC, 4 -INTD +msi_interrupts Should be 1 to 32 depending on the number of MSI interrupts + to test +msix_interrupts Should be 1 to 2048 depending on the number of MSI-X + interrupts to test +================ =========================================================== -- cgit v1.3.1