Re: [EXTERNAL]Re: FSL serial 166550 errata broken?

2017-09-28 Thread Joakim Tjernlund
On Thu, 2017-09-28 at 17:54 +0200, Joakim Tjernlund wrote: > On Wed, 2017-09-27 at 15:32 +, York Sun wrote: > > On 09/27/2017 04:03 AM, Joakim Tjernlund wrote: > > > On Mon, 2017-09-25 at 17:26 +, York Sun wrote: > > > > On 09/25/2017 09:55 AM, Joakim Tjernlund wrote: > > > > > We got some

Re: [EXTERNAL]Re: FSL serial 166550 errata broken?

2017-09-28 Thread Joakim Tjernlund
On Wed, 2017-09-27 at 15:32 +, York Sun wrote: > On 09/27/2017 04:03 AM, Joakim Tjernlund wrote: > > On Mon, 2017-09-25 at 17:26 +, York Sun wrote: > > > On 09/25/2017 09:55 AM, Joakim Tjernlund wrote: > > > > We got some "broken" boards(mpx8321) where UART RX is held low(BREAK) > > > >

Re: FSL serial 166550 errata broken?

2017-09-27 Thread York Sun
On 09/27/2017 04:03 AM, Joakim Tjernlund wrote: > On Mon, 2017-09-25 at 17:26 +, York Sun wrote: >> On 09/25/2017 09:55 AM, Joakim Tjernlund wrote: >>> We got some "broken" boards(mpx8321) where UART RX is held low(BREAK) >>> There we get a few: >>> serial8250: too much work for irq18 >>>

Re: FSL serial 166550 errata broken?

2017-09-27 Thread Joakim Tjernlund
On Mon, 2017-09-25 at 17:26 +, York Sun wrote: > On 09/25/2017 09:55 AM, Joakim Tjernlund wrote: > > We got some "broken" boards(mpx8321) where UART RX is held low(BREAK) > > There we get a few: > >serial8250: too much work for irq18 > > and the board freezes. > > > > Looking inte to

Re: FSL serial 166550 errata broken?

2017-09-25 Thread York Sun
On 09/25/2017 09:55 AM, Joakim Tjernlund wrote: > We got some "broken" boards(mpx8321) where UART RX is held low(BREAK) > There we get a few: >serial8250: too much work for irq18 > and the board freezes. > > Looking inte to driver/CPU there is an errtum(A-004737) w.r.t BREAK handling > and I

FSL serial 166550 errata broken?

2017-09-25 Thread Joakim Tjernlund
We got some "broken" boards(mpx8321) where UART RX is held low(BREAK) There we get a few: serial8250: too much work for irq18 and the board freezes. Looking inte to driver/CPU there is an errtum(A-004737) w.r.t BREAK handling and I can see we are hitting the irq function fsl8250_handle_irq()