Hello, I am working on platform from the davinci architecture that uses the 8520 UART driver. However, there are some configurations that do not have a valid CTS input pin (it is a multi-purpose pin on a SoC part, and it may be configured for other functions). These configurations can cause a pile of "false" MSR interrupts. If, in 8250.c, I set the UART_BUG_NOMSR flag as part of the up->bugs information, the problem clears up.
The problem is that there is no way to pass bugs information via platform data. The link (below) contains a work-around patch that I had submitted to the davinci group. It was suggested that I get guidance from the folks on the davinci-serial list, and that I should consider figuring out a way to set the UART_BUG_NOMSR flag from the platform or initialization data. The patch submission also has a more detailed description of the problem for anyone interested. https://patchwork.kernel.org/patch/442671/ Should I create a new port type, add a new UPF_ flag in the flags field, figure out how to pass bugs information via platform data, or continue along the work-around path? Thanks for any insight. -Mike _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
