Kevin, On Thu, 04 Oct 2012 16:06:27 -0700, Kevin Hilman wrote: > > It seems they are exactly the same, unless my eyes missed > > something, of course. > > The example I gave was only for the UART3 RX, you should dump the > UART3 TX pins as. Using the omap_mux debugfs, you can see all of the > potential pins where uart3_tx can be routed: Well, UART3 TX seems to be working fine. Do RX and TX have mutual influence in terms of pin muxing? > Yes, that tells me where UART3 is expected to be mux'd on the board. > So you can ignore the dss_data* and husb_data* files above and focus > on uart3* > > So to summarize, in /sys/kernel/debug/omap_mux, just do a 'cat uart3*' > on a working and non-working board and see if there are any > differences. 3.2 (working) name: uart3_cts_rctx.uart3_cts_rctx (0x4800219a/0x16a = 0x0108), b h18, t NA mode: OMAP_PIN_INPUT_PULLDOWN | OMAP_MUX_MODE0 signals: uart3_cts_rctx | NA | NA | NA | gpio_163 | NA | NA | safe_mode name: uart3_rts_sd.uart3_rts_sd (0x4800219c/0x16c = 0x0000), b h19, t NA mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE0 signals: uart3_rts_sd | NA | NA | NA | gpio_164 | NA | NA | safe_mode name: uart3_rx_irrx.uart3_rx_irrx (0x4800219e/0x16e = 0x0100), b h20, t NA mode: OMAP_PIN_INPUT | OMAP_MUX_MODE0 signals: uart3_rx_irrx | NA | NA | NA | gpio_165 | NA | NA | safe_mode name: uart3_tx_irtx.uart3_tx_irtx (0x480021a0/0x170 = 0x0000), b h21, t NA mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE0 signals: uart3_tx_irtx | NA | NA | NA | gpio_166 | NA | NA | safe_mode 3.6 (not working) name: uart3_cts_rctx.uart3_cts_rctx (0x4800219a/0x16a = 0x0108), b h18, t NA mode: OMAP_PIN_INPUT_PULLDOWN | OMAP_MUX_MODE0 signals: uart3_cts_rctx | NA | NA | NA | gpio_163 | NA | NA | safe_mode name: uart3_rts_sd.uart3_rts_sd (0x4800219c/0x16c = 0x0000), b h19, t NA mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE0 signals: uart3_rts_sd | NA | NA | NA | gpio_164 | NA | NA | safe_mode name: uart3_rx_irrx.uart3_rx_irrx (0x4800219e/0x16e = 0x0100), b h20, t NA mode: OMAP_PIN_INPUT | OMAP_MUX_MODE0 signals: uart3_rx_irrx | NA | NA | NA | gpio_165 | NA | NA | safe_mode name: uart3_tx_irtx.uart3_tx_irtx (0x480021a0/0x170 = 0x0000), b h21, t NA mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE0 signals: uart3_tx_irtx | NA | NA | NA | gpio_166 | NA | NA | safe_mode Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
