From: SZ Lin (林上智) <sz.lin@xxxxxxxx> Date: Fri, 16 Mar 2018 00:56:01 +0800 > 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.Chen@xxxxxxxx> > Signed-off-by: SZ Lin (林上智) <sz.lin@xxxxxxxx> > Signed-off-by: Schuyler Patton <spatton@xxxxxx> Applied and queued up for -stable, thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
