dtoverlays: Add override for target-path on I2C overlays #6541
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pelwell
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Dec 16, 2024
pelwell
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Dec 16, 2024
I was wanting to make sure you approved of the approach, but was then intending to add it to the majority of the overlays for I2C peripherals. I'll go and update a load more now. |
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Updated with almost all the I2C based overlays. Now to just get all the dtoverlaycheck issues sorted..... |
To allow for attaching any of the standard overlays to a bitbashed i2c-gpio bus, allow specifying the target path for the overlay. Suggested by: https://forums.raspberrypi.com/viewtopic.php?t=381059 Example: dtoverlay=i2c-gpio,i2c_gpio_sda=10,i2c_gpio_scl=11 dtoverlay=mcp23017,i2c-path=/i2c@0 dtoverlay=i2c-gpio,i2c_gpio_sda=12,i2c_gpio_scl=13,bus=3 dtoverlay=mcp23017,i2c-path=/i2c@3 Signed-off-by: Dave Stevenson <[email protected]>
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kernel: dtoverlays: Add override for target-path on I2C overlays See: raspberrypi/linux#6541 kernel: misc: rp1-pio: Support larger data transfers See: raspberrypi/linux#6543 kernel: dtoverlays: Use continuous clock mode for ov9281 See: raspberrypi/linux#6542 kernel: overlays: goodix: Allow override i2c address See: raspberrypi/linux#6547 kernel: Add PIO-assisted WS2812 LEDs driver See: raspberrypi/linux#6551 kernel: overlays: Add and document i2c_csi_dsi0 parameters See: raspberrypi/linux#6553
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kernel: dtoverlays: Add override for target-path on I2C overlays See: raspberrypi/linux#6541 kernel: misc: rp1-pio: Support larger data transfers See: raspberrypi/linux#6543 kernel: dtoverlays: Use continuous clock mode for ov9281 See: raspberrypi/linux#6542 kernel: overlays: goodix: Allow override i2c address See: raspberrypi/linux#6547 kernel: Add PIO-assisted WS2812 LEDs driver See: raspberrypi/linux#6551 kernel: overlays: Add and document i2c_csi_dsi0 parameters See: raspberrypi/linux#6553
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To allow for attaching any of the standard overlays to a bitbashed i2c-gpio bus, allow specifying the target path for the overlay.
Suggested by:
https://forums.raspberrypi.com/viewtopic.php?t=381059 2 overlays implemented as examples, but could be applied to all.
Example: