On 04/14/2015 12:39 PM, Peter Ujfalusi wrote:
OK, got another SD card. McBSP3 in master mode works (no codec connected) playback and capture as well.
The pins for McBSP3: OMAP3_CORE1_IOPAD(0x2172, PIN_OUTPUT | MUX_MODE0) /* mcbsp3_fsx.mcbsp3_fsx */ OMAP3_CORE1_IOPAD(0x2178, PIN_OUTPUT | MUX_MODE1) /* uart2_tx.mcbsp3_clkx */ OMAP3_CORE1_IOPAD(0x2174, PIN_OUTPUT | MUX_MODE1) /* uart2_cts.mcbsp3_dx */ OMAP3_CORE1_IOPAD(0x2176, PIN_INPUT | MUX_MODE1) /* uart2_rts.mcbsp3_dr */
I still not sure why McBSP1 is not working..
This pinctrl setting is not correct for McBSP3. I was changing the registers on the fly, that's why it was working when I replied.
In McBSP3 master mode, you need: OMAP3_CORE1_IOPAD(0x2172, PIN_INPUT | MUX_MODE0) /* mcbsp3_fsx.mcbsp3_fsx */ OMAP3_CORE1_IOPAD(0x2178, PIN_INPUT | MUX_MODE1) /* uart2_tx.mcbsp3_clkx */ OMAP3_CORE1_IOPAD(0x2174, PIN_OUTPUT | MUX_MODE1) /* uart2_cts.mcbsp3_dx */ OMAP3_CORE1_IOPAD(0x2176, PIN_INPUT | MUX_MODE1) /* uart2_rts.mcbsp3_dr */
Which would work in McBSP3 slave mode as well. Playback, capture works (McBSP3 master). I have connected DX to DR and captured whatever I was playing. Came back fine.
As for McBSP1 I think this should get it working: OMAP3_CORE1_IOPAD(0x2196, PIN_INPUT | MUX_MODE0) /* mcbsp1_fsx.mcbsp1_fsx */ OMAP3_CORE1_IOPAD(0x218e, PIN_INPUT | MUX_MODE0) /* mcbsp1_fsr.mcbsp1_fsr */ OMAP3_CORE1_IOPAD(0x2198, PIN_INPUT | MUX_MODE0) /* mcbsp1_clkx.mcbsp1_clkx */ OMAP3_CORE1_IOPAD(0x218c, PIN_INPUT | MUX_MODE0) /* mcbsp1_clkr.mcbsp1_clkr */ OMAP3_CORE1_IOPAD(0x2190, PIN_OUTPUT | MUX_MODE0) /* mcbsp1_dx.mcbsp1_dx */ OMAP3_CORE1_IOPAD(0x2192, PIN_INPUT | MUX_MODE0) /* mcbsp1_dr.mcbsp1_dr */
If McBSP1 is slave, then connect the FS to both FSX and FSR and do the same for CLK.