On Wed, Jul 17, 2019 at 03:26:07PM +0200, Wolfram Sang wrote: > On Wed, Jul 17, 2019 at 02:57:39PM +0200, Simon Horman wrote: > > * According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of > > August 24, 2018, the TX clock internal delay mode isn't supported > > on R-Car E3 (r8a77990) and D3 (r8a77995). > > > > * TX clock internal delay mode is required for reliable 1Gbps communication > > using the KSZ9031RNX phy present on the Ebisu and Draak boards. > > > > Thus, the E3 based Ebisu and D3 based Draak boards reliably use 1Gbps and > > the speed should be limited to 100Mbps. > > > > Based on work by Kazuya Mizuguchi. > > > > Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx> > > What about adding a short comment explaining the situation? Do you mean in the DT itself?
