target/linux/ath79/patches-5.15/0040-ath79-sgmii-config.patch

   1 From: David Bauer <mail@david-bauer.net>
   2 Subject: [PATCH] ath79: force SGMII SerDes mode to MAC operation
   3
   4 The mode on the SGMII SerDes on the QCA9563 is 1000 Base-X by default.
   5 This only allows for 1000 Mbit/s links, however when used with an SGMII
   6 PHY in 100 Mbit/s link mode, the link remains dead.
   7
   8 This strictly has nothing to do with the SerDes calibration, however it
   9 is done at the same point in the QCA reference U-Boot which is the
  10 blueprint for everything happening here. As the current state is more or
  11 less a hack, this should be fine.
  12
  13 This fixes the issues outlined above on a TP-Link EAP-225 Outdoor.
  14
  15 Reported-by: Tom Herbers <freifunk@tomherbers.de>
  16 Tested-by: Tom Herbers <freifunk@tomherbers.de>
  17 Submitted-by: David Bauer <mail@david-bauer.net>
  18 ---
  19  arch/mips/include/asm/mach-ath79/ar71xx_regs.h           | 1 +
  20  1 files changed, 1 insertion(+)
  21
  22 --- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
  23 +++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
  24 @@ -1376,5 +1376,6 @@
  25
  26  #define QCA956X_SGMII_CONFIG_MODE_CTRL_SHIFT   0
  27  #define QCA956X_SGMII_CONFIG_MODE_CTRL_MASK    0x7
  28 +#define QCA956X_SGMII_CONFIG_MODE_CTRL_SGMII_MAC       0x2
  29
  30  #endif /* __ASM_MACH_AR71XX_REGS_H */