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Groups > linux.kernel > #1377990
| From | Bryan O'Donoghue <pure.logic@nexus-software.ie> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART |
| Date | 2016-04-13 16:40 +0200 |
| Message-ID | <rnu7w-2D7-3@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <rmMpQ-8jk-43@gated-at.bofh.it> <rn9mq-1RY-5@gated-at.bofh.it> <rn9FL-22N-1@gated-at.bofh.it> <rnr9E-rU-13@gated-at.bofh.it> <rnrMn-116-47@gated-at.bofh.it> |
| Organization | Nexus Software |
On Wed, 2016-04-13 at 15:03 +0300, Andy Shevchenko wrote:
> Because a probability of FIFO overrun.
>
> There is a big chapter ("Peripheral Burst Transaction Requests") in
> dw_apb_dmac_db.pdf covering this.
I thought there was flow control between the controller and the FIFO
here ? I don't have the spec SoC spec for the UART to hand but, if
memory serves...
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[PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-04-07 22:40 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-04-11 17:40 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-04-11 18:00 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-04-11 18:10 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-04-12 18:30 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-04-12 18:50 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-04-13 13:30 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-04-13 14:10 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-04-13 16:40 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-04-13 16:50 +0200
Re: [PATCH v1 12/12] serial: 8250_lpss: enable DMA on Intel Quark UART Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-04-13 17:30 +0200
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