On 03/15/2018 11:18 AM, Grygorii Strashko wrote: > > > On 03/15/2018 12:39 PM, Grygorii Strashko wrote: >> >> >> On 03/15/2018 11:56 AM, SZ Lin (林上智) wrote: >>> According to AM335x TRM[1] 14.3.6.2, AM437x TRM[2] 15.3.6.2 and >>> DRA7 TRM[3] 24.11.4.8.7.3.3, in-band mode in EXT_EN(bit18) register >>> is only >>> available when PHY is configured in RGMII mode with 10Mbps speed. It >>> will >>> cause some networking issues without RGMII mode, such as carrier sense >>> errors and low throughput. TI also mentioned this issue in their >>> forum[4]. >>> >>> This patch adds the check mechanism for PHY interface with RGMII >>> interface >>> type, the in-band mode can only be set in RGMII mode with 10Mbps speed. >>> >>> References: >>> [1]: https://www.ti.com/lit/ug/spruh73p/spruh73p.pdf >>> [2]: http://www.ti.com/lit/ug/spruhl7h/spruhl7h.pdf >>> [3]: http://www.ti.com/lit/ug/spruic2b/spruic2b.pdf >>> [4]: https://e2e.ti.com/support/arm/sitara_arm/f/791/p/640765/2392155 >>> >>> Suggested-by: Holsety Chen (陳憲輝) <holsety.c...@moxa.com> >>> Signed-off-by: SZ Lin (林上智) <sz....@moxa.com> >>> Signed-off-by: Schuyler Patton <spat...@ti.com> >>> --- >>> Changes from v1: >>> - Use phy_interface_is_rgmii helper function >>> - Remove blank line >>> >> >> Reviewed-by: Grygorii Strashko <grygorii.stras...@ti.com> >> > > Also could this be marked as stable material 4.9+?
This is not how it works for networking changes, just make sure you provide a "Fixes:" tag, and David would usually take care of queueing the change to -stable accordingly: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/networking/netdev-FAQ.txt#n148 -- Florian
