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openwrt/target/linux/ath79/patches-5.4/0040-ath79-sgmii-config.patch

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ath79: force SGMII SerDes mode to MAC operation The mode on the SGMII SerDes on the QCA9563 is 1000 Base-X by default. This only allows for 1000 Mbit/s links, however when used with an SGMII PHY in 100 Mbit/s link mode, the link remains dead. This strictly has nothing to do with the SerDes calibration, however it is done at the same point in the QCA reference U-Boot which is the blueprint for everything happening here. As the current state is more or less a hack, this should be fine. This fixes the issues outlined above on a TP-Link EAP-225 Outdoor. Reported-by: Tom Herbers <freifunk@tomherbers.de> Tested-by: Tom Herbers <freifunk@tomherbers.de> Signed-off-by: David Bauer <mail@david-bauer.net> (cherry picked from commit fbbad9a9a629b388626b477e6cd692c160f63fb3)
2021-03-31 23:20:45 +00:00
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
@@ -1376,5 +1376,6 @@
#define QCA956X_SGMII_CONFIG_MODE_CTRL_SHIFT 0
#define QCA956X_SGMII_CONFIG_MODE_CTRL_MASK 0x7
+#define QCA956X_SGMII_CONFIG_MODE_CTRL_SGMII_MAC 0x2
#endif /* __ASM_MACH_AR71XX_REGS_H */
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