drivers: net: xgene: Fix module unload crash - clkrst sequence

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This patch fixes clock reset sequence.

- Added clock reset sequence for ACPI
- Added delay in clock reset sequence to make sure pulse is generated
- Added clk_unprepare_disable() in port shutdown to make sure
  clock increment/decrement counts are matching
- Removed MII_MGMT_CONFIG programming, since it is not required
- Fixed programming XGENET_CONFIG_REG to enable SGMII mode

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Fushen Chen <fchen@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Iyappan Subramanian 2016-07-25 17:12:39 -07:00 • committed by David S. Miller

parent cb0366b7c1

commit bc61167ac8

4 changed files with 86 additions and 18 deletions

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34

drivers/net/ethernet/apm/xgene/xgene_enet_hw.c

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45

drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c

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1

drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.h

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24

drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c

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