Re: [PATCH v3] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

2017-02-15 Thread Christopher Covington
On 02/15/2017 03:07 PM, Greg Kroah-Hartman wrote: > On Wed, Feb 15, 2017 at 07:50:27PM +, Mark Rutland wrote: >> On Wed, Feb 15, 2017 at 01:01:59PM -0500, Christopher Covington wrote: >>> Due to known (although trivial) conflicts in silicon-errata.txt, based on >>> http://git.kernel.org/cgit/l

Re: [PATCH v3] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

2017-02-15 Thread Greg Kroah-Hartman
On Wed, Feb 15, 2017 at 07:50:27PM +, Mark Rutland wrote: > On Wed, Feb 15, 2017 at 01:01:59PM -0500, Christopher Covington wrote: > > The Qualcomm Datacenter Technologies QDF2400 family of SoCs contains a > > custom (non-PrimeCell) implementation of the SBSA UART. Occasionally the > > BUSY bit

Re: [PATCH v3] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

2017-02-15 Thread Mark Rutland
On Wed, Feb 15, 2017 at 01:01:59PM -0500, Christopher Covington wrote: > The Qualcomm Datacenter Technologies QDF2400 family of SoCs contains a > custom (non-PrimeCell) implementation of the SBSA UART. Occasionally the > BUSY bit in the Flag Register gets stuck as 1, erratum 44 for both 2432v1 > an

Re: [PATCH v3] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

2017-02-15 Thread Timur Tabi
On 02/15/2017 12:01 PM, Christopher Covington wrote: Signed-off-by: Christopher Covington Acked-by: Russell King Acked-by: Timur Tabi It would great if we could get this into 4.11. As crazy it sounds, it is the only critical patch in 4.11 that we need for our platform. -- Qualcomm Datac

[PATCH v3] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

2017-02-15 Thread Christopher Covington
The Qualcomm Datacenter Technologies QDF2400 family of SoCs contains a custom (non-PrimeCell) implementation of the SBSA UART. Occasionally the BUSY bit in the Flag Register gets stuck as 1, erratum 44 for both 2432v1 and 2400v1 SoCs.Checking that the Transmit FIFO Empty (TXFE) bit is 0, instead of