Re: [edk2] [PATCH edk2-platforms] Silicon/SynQuacerPciHostBridgeLib: enable Gen2 speed

2017-11-30 Thread Ard Biesheuvel
On 29 November 2017 at 19:12, Leif Lindholm wrote: > On Wed, Nov 29, 2017 at 06:44:59PM +, Ard Biesheuvel wrote: >> As it turns out, getting the PCIe controllers to switch to Gen2 speed >> is surprisingly easy. It only involves setting the 'speed change' bit >> in

Re: [edk2] [PATCH edk2-platforms] Silicon/SynQuacerPciHostBridgeLib: enable Gen2 speed

2017-11-29 Thread Leif Lindholm
On Wed, Nov 29, 2017 at 06:44:59PM +, Ard Biesheuvel wrote: > As it turns out, getting the PCIe controllers to switch to Gen2 speed > is surprisingly easy. It only involves setting the 'speed change' bit > in the controller at initialization time, after which the hardware > will automatically

[edk2] [PATCH edk2-platforms] Silicon/SynQuacerPciHostBridgeLib: enable Gen2 speed

2017-11-29 Thread Ard Biesheuvel
As it turns out, getting the PCIe controllers to switch to Gen2 speed is surprisingly easy. It only involves setting the 'speed change' bit in the controller at initialization time, after which the hardware will automatically attempt to switch to Gen2 speed after training at Gen1 speed has