Re: [PATCH v3 3/5] fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire

2018-07-12 Thread Benjamin Herrenschmidt
On Thu, 2018-07-12 at 17:53 +1000, Joel Stanley wrote: > On 12 July 2018 at 13:48, Benjamin Herrenschmidt > wrote: > > The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which > > is currently unused on OpenPower systems. > > > > This adds an alternative to the fsi-master-gpio driver that

Re: [PATCH v3 3/5] fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire

2018-07-12 Thread Benjamin Herrenschmidt
On Thu, 2018-07-12 at 17:53 +1000, Joel Stanley wrote: > On 12 July 2018 at 13:48, Benjamin Herrenschmidt > wrote: > > The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which > > is currently unused on OpenPower systems. > > > > This adds an alternative to the fsi-master-gpio driver that

Re: [PATCH v3 3/5] fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire

2018-07-12 Thread Joel Stanley
On 12 July 2018 at 13:48, Benjamin Herrenschmidt wrote: > The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which > is currently unused on OpenPower systems. > > This adds an alternative to the fsi-master-gpio driver that > uses that coprocessor instead of bit banging from the ARM > core

Re: [PATCH v3 3/5] fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire

2018-07-12 Thread Joel Stanley
On 12 July 2018 at 13:48, Benjamin Herrenschmidt wrote: > The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which > is currently unused on OpenPower systems. > > This adds an alternative to the fsi-master-gpio driver that > uses that coprocessor instead of bit banging from the ARM > core

[PATCH v3 3/5] fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire

2018-07-11 Thread Benjamin Herrenschmidt
The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which is currently unused on OpenPower systems. This adds an alternative to the fsi-master-gpio driver that uses that coprocessor instead of bit banging from the ARM core itself. The end result is about 4 times faster. The firmware for the

[PATCH v3 3/5] fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire

2018-07-11 Thread Benjamin Herrenschmidt
The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which is currently unused on OpenPower systems. This adds an alternative to the fsi-master-gpio driver that uses that coprocessor instead of bit banging from the ARM core itself. The end result is about 4 times faster. The firmware for the