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[net-next,v1,0/1] Enable SERDES power up/down

Message ID 20200420154252.8000-1-weifeng.voon@intel.com
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Series Enable SERDES power up/down | expand

Message

Voon, Weifeng April 20, 2020, 3:42 p.m. UTC 
This patch is to enable Intel SERDES power up/down sequence. The SERDES
converts 8/10 bits data to SGMII signal.
1.Introduced 2 new BSP callbacks ->serdes_powerup() and ->serdes_powerdown().
2.The 2 new BSP callbacks is called in stmmac_dvr_probe() and
  stmmac_resume() for SERDER powerup; stmmac_dvr_remove() and
  stmmac_suspend() for SERDES powerdown.
3.Intel platform specific SERDES powerup and powerdown sequence functions
  are added in dwmac-intel.c.
4.Since configuring the SERDES is through mdio, mdio communication is
  needed to be up before powerup sequence. As for SERDES power-down
  sequence, it must be configured after all dma stop and before unregister
  the mdio bus.
5.New file dwmac-intel.h is created for register definition.

Voon Weifeng (1):
  net: stmmac: Enable SERDES power up/down sequence

 .../net/ethernet/stmicro/stmmac/dwmac-intel.c | 189 ++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/dwmac-intel.h |  23 +++
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |  23 +++
 include/linux/stmmac.h                        |   2 +
 4 files changed, 237 insertions(+)
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-intel.h