Hi all, The mcp251xfd allows two pins to be configured as GPIOs. This series adds support for this feature. The GPIO functionality is controlled with the IOCON register which has an erratum. Patch 1-3 from https://lore.kernel.org/linux-can/20240429-mcp251xfd-runtime_pm-v1-0-c26a93a66544@xxxxxxxxxxxxxx/ Patch 4 refactor of no-crc functions to prepare workaround for non-crc writes Patch 5 is the fix/workaround for the aforementioned erratum Patch 6 only configure pin1 for rx-int Patch 7 adds the gpio support Patch 8 updates dt-binding --- Changes in v3: - Implement workaround for non-crc writes - Configure only Pin1 for rx-int feature - moved errata check to .gather_write callback function - Added MCP251XFD_REG_IOCON_*() macros - Added Marcs suggestions - Collect Krzysztofs Acked-By - Link to v2: https://lore.kernel.org/r/20240506-mcp251xfd-gpio-feature-v2-0-615b16fa8789@xxxxxxxxxxxxxxx Changes in v2: - picked Marcs patches from https://lore.kernel.org/linux-can/20240429-mcp251xfd-runtime_pm-v1-0-c26a93a66544@xxxxxxxxxxxxxx/ - Drop regcache - Add pm_runtime in mcp251xfd_gpio_request/mcp251xfd_gpio_free - Implement mcp251xfd_gpio_get_multiple/mcp251xfd_gpio_set_multiple - Move check for rx_int/gpio conflict to mcp251xfd_gpio_request - Link to v1: https://lore.kernel.org/r/20240417-mcp251xfd-gpio-feature-v1-0-bc0c61fd0c80@xxxxxxxxxxxxxxx --- Gregor Herburger (5): can: mcp251xfd: utilize gather_write function for all non-CRC writes can: mcp251xfd: add workaround for errata 5 can: mcp251xfd: only configure PIN1 when rx_int is set can: mcp251xfd: add gpio functionality dt-bindings: can: mcp251xfd: add gpio-controller property Marc Kleine-Budde (3): can: mcp251xfd: properly indent labels can: mcp251xfd: move mcp251xfd_timestamp_start()/stop() into mcp251xfd_chip_start/stop() can: mcp251xfd: move chip sleep mode into runtime pm .../bindings/net/can/microchip,mcp251xfd.yaml | 5 + drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 338 ++++++++++++++++----- drivers/net/can/spi/mcp251xfd/mcp251xfd-dump.c | 2 +- drivers/net/can/spi/mcp251xfd/mcp251xfd-regmap.c | 116 +++++-- drivers/net/can/spi/mcp251xfd/mcp251xfd-tef.c | 2 +- .../net/can/spi/mcp251xfd/mcp251xfd-timestamp.c | 7 +- drivers/net/can/spi/mcp251xfd/mcp251xfd-tx.c | 2 +- drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 11 + 8 files changed, 389 insertions(+), 94 deletions(-) --- base-commit: 1fdad13606e104ff103ca19d2d660830cb36d43e change-id: 20240417-mcp251xfd-gpio-feature-29a1bf6acb54 Best regards, -- TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht München, HRB 105018 Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider https://www.tq-group.com/
