Re: [PATCH 0/3] tty: serial: 8250_omap: Enable DMA support

From	Tony Lindgren <tony@atomide.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 0/3] tty: serial: 8250_omap: Enable DMA support
Date	2017-01-13 19:30 +0100
Message-ID	<sZeLT-4cm-23@gated-at.bofh.it> (permalink)
References	<sZ55T-6Ta-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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* Vignesh R <vigneshr@ti.com> [170113 00:03]:
> This patch series re enables DMA support for UART 8250_omap driver.
> 
> Tested on AM335x, AM437x that use EDMA and OMAP5 and DRA74 EVM with
> SDMA.

Is 8250_omap serial console working for you on omap5 in general?

I've noticed that it's really unresponsive for me as if the FIFO
interrupt was not working. For example logging in might take several
attempts and a long time with each character showing up much later
after some timeout.

TX on the uart on omap5 seems to work OK, I do see all the console
messages fine. And these patches do not make the issue better or
worse.

Regards,

Tony

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[PATCH 0/3] tty: serial: 8250_omap: Enable DMA support Vignesh R <vigneshr@ti.com> - 2017-01-13 09:10 +0100
  [PATCH 2/3] tty: serial: 8250_omap: Add OMAP_DMA_TX_KICK quirk for AM437x Vignesh R <vigneshr@ti.com> - 2017-01-13 09:10 +0100
  [PATCH 1/3] serial: 8250: omap: pause DMA only if DMA transfer in progress Vignesh R <vigneshr@ti.com> - 2017-01-13 09:10 +0100
  [PATCH 3/3] tty: serial: 8250_omap: Remove rx_dma_broken flag Vignesh R <vigneshr@ti.com> - 2017-01-13 09:10 +0100
  Re: [PATCH 0/3] tty: serial: 8250_omap: Enable DMA support Tony Lindgren <tony@atomide.com> - 2017-01-13 19:30 +0100

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