Hi, I have a board attached via SPI0 to a BBB (also tested with Green). I'm activating SPI0 via uEnv.txt entries which I read is the best practice. Now I can use the board with its user space software (no kernel driver whatsoever involved). The setup *works* with 3.8 and 4.1 kernels but *not* with 4.4 and 4.9. Below I have the output of
cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pinmux-pins | grep spi and the actual device name for each version. I cannot spot any relevant difference. So what has changed in the SPI code between those kernels or has anyone an idea what could be the issue here? BG, Thomas 3.8.13 /dev/spidev1.0 pin 84 (44e10950): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 85 (44e10954): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 86 (44e10958): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 87 (44e1095c): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins 4.1.x /dev/spidev1.0 pin 84 (44e10950.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 85 (44e10954.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 86 (44e10958.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 87 (44e1095c.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins 4.4.x /dev/spidev1.0 pin 84 (44e10950.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 85 (44e10954.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 86 (44e10958.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 87 (44e1095c.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins 4.9.x /dev/spidev0.0 pin 84 (44e10950.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 85 (44e10954.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 86 (44e10958.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins pin 87 (44e1095c.0): 48030000.spi (GPIO UNCLAIMED) function pinmux_bb_spi0_pins group pinmux_bb_spi0_pins -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/e1a2e7ae-1e6e-406b-be64-7efb1cbfe8f6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
