diff options
| author |   Joakim Zhang <qiangqing.zhang@nxp.com> | 2021-03-15 20:16:46 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-03-15 14:46:21 -0700 |
| commit | 5ec55823438e850c91c6b92aec93fb04ebde29e2 (patch) | |
| tree | c1a2157632c7e16770a5a1ac557aac9862884ab9 /drivers/net/ethernet/stmicro/stmmac/stmmac.h | |
| parent | Merge branch 'net-pcs-stmmac=add-C37-AN-SGMII-support' (diff) | |
| download | linux-5ec55823438e850c91c6b92aec93fb04ebde29e2.tar.xz linux-5ec55823438e850c91c6b92aec93fb04ebde29e2.zip | |
net: stmmac: add clocks management for gmac driver
This patch intends to add clocks management for stmmac driver:
If CONFIG_PM enabled:
1. Keep clocks disabled after driver probed.
2. Enable clocks when up the net device, and disable clocks when down
the net device.
If CONFIG_PM disabled:
Keep clocks always enabled after driver probed.
Note:
1. It is fine for ethtool, since the way of implementing ethtool_ops::begin
in stmmac is only can be accessed when interface is enabled, so the clocks
are ticked.
2. The MDIO bus has a different life cycle to the MAC, need ensure
clocks are enabled when _mdio_read/write() need clocks, because these
functions can be called while the interface it not opened.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index e553b9a1f785..10e8ae8e2d58 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -272,6 +272,7 @@ void stmmac_disable_eee_mode(struct stmmac_priv *priv); bool stmmac_eee_init(struct stmmac_priv *priv); int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt); int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size); +int stmmac_bus_clks_config(struct stmmac_priv *priv, bool enabled); #if IS_ENABLED(CONFIG_STMMAC_SELFTESTS) void stmmac_selftest_run(struct net_device *dev, |