Drivers for NXP SC16IS75x I2C/SPI to UART/GPIO bridges #248
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Irockasingranite
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You can find the documentation preview for this PR at this link. It will be updated about 10 minutes after the documentation build succeeds. Note: This comment is automatically posted by the Documentation Publishing GitHub Action. |
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Could we add a simple sample or implement our version of the all drivers test case that exists upstream? Also I'll define a merge order in relation to the other outstanding PR #249:
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This was referenced Jul 25, 2024
rexut
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This driver manages the MFD pseudo-bus on which child devices can be placed, and which itself is placed on either an SPI or I2C bus. The number of and ids of channels on a given bridge are determined at build time based on devicetree information. Most bus communication is performed using blocking calls, but to perform interrupt handling some non-blocking bus operations are needed. If the underlying bus supports asynchronous/callback based APIs, these are utilized. Otherwise, each driver instance creates a separate work queue for offloading bus transfers without blocking the system work queue. Signed-off-by: Sarah Renkhoff <[email protected]> Signed-off-by: Stephan Linz <[email protected]>
This driver manages the GPIO controller part of an SC16IS75x MFD. Interrupts are ultimately handled by the parent MFD, which requires enabling non-blocking bus transfers (i.e. potentially an additional work queue thread). Signed-off-by: Sarah Renkhoff <[email protected]> Signed-off-by: Stephan Linz <[email protected]>
This driver manages the UART controller part of an SC16IS75x MFD, for a specific UART channel. Using the interrupt driven UART API required interrupt handling on the parent MFD, which may require an additional work queue thread to perform non-blocking bus transfers. Signed-off-by: Sarah Renkhoff <[email protected]> Signed-off-by: Stephan Linz <[email protected]>
Warning was: /test/w1@66660000: unnecessary #address-cells/#size-cells without "ranges" or child "reg" property /test/w1@66660000:ranges: empty "ranges" property but its #size-cells (0) differs from /test (1) /test/i2c@11112222/lis2dux12@8a: duplicate unit-address (also used in node /test/i2c@11112222/iis328dq@8a) Signed-off-by: Stephan Linz <[email protected]>
Warning was:
tstdrv-bldall-display-adj.overlay:
unit address and first address in 'reg' (0xa)
don't match for /test/test_mipi_dbi_adj/ili9342c@10
unit address and first address in 'reg' (0x14)
don't match for /test/test_mipi_dbi_xfr_16bit_adj/ili9342c@20
tstdrv-bldall-i2c-adj.overlay:
tstdrv-bldall-rtc-adj.overlay:
tstdrv-bldall-uart-adj.overlay:
unit address and first address in 'reg' (0xccccdddd)
don't match for /test/spi@bbbbcccc
Signed-off-by: Stephan Linz <[email protected]>
Now all 'test_uart_adj' nodes located at 0xeeeeffff. Signed-off-by: Stephan Linz <[email protected]>
- 'test_i3c_adj: i3c@bbbbaaaa {};' for I3C devices
- 'test_w1_adj: w1@ffffeeee {};' for One-Wire (W1) devices
Signed-off-by: Stephan Linz <[email protected]>
Support the SC16IS75x chip series on build all MFD driver test. Signed-off-by: Stephan Linz <[email protected]>
Support the SC16IS75x chip series on build all GPIO driver test. Signed-off-by: Stephan Linz <[email protected]>
Support the SC16IS75x chip series on build all UART driver test. Signed-off-by: Stephan Linz <[email protected]>
Add github issue resolved by the previous commits. Signed-off-by: Sarah Renkhoff <[email protected]> Signed-off-by: Stephan Linz <[email protected]>
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@tobiaskaestner now, we use the Zephyr upstream tests for build all drivers. |
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Adds drivers for the NXP SC16IS75x series MFDs, which provide one or more UART channels and several GPIO pins over either I2C or SPI.
Closes #246.