Hello Emile
> It turns out that reading from D0 doesn't work unless RXACTIVE=1 for the SCLK
> signal. This comment from hipstercircuits confirms this. That answers my
> question #1.
> In now have this in my dts file, and both reading and writing seem to work ok:
> pinctrl-single,pins = <
0x190 0x2b /* mcasp0_aclkx.spi1_sclk, RXACTIVE | Pull-down disabled |
MODE3 */
0x194 0x33 /* mcasp0_fsx.spi1_d0, INPUT_PULLUP | MODE3 */
0x198 0x1b /* mcasp0_axr0.spi1_d1, Pull-up disabled | MODE3 */
0x19c 0x1b /* mcasp0_ahclkr.spi1_cs0, Pull-up disabled | MODE3 */
Can you share a complete copy of your DTS file?
Thx.
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