diff options
| author | jpinto | 2017-01-09 13:35:08 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-01-09 20:54:29 +0100 |
| commit | b4b7b772e8b018286482d8d1fba7804ceac56a64 (patch) | |
| tree | 4388fe9d8bd9cb3b868436c01c66e30b6986d318 /drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | |
| parent | alx: add feature flag for rx checksumming (diff) | |
| download | kernel-qcow2-linux-b4b7b772e8b018286482d8d1fba7804ceac56a64.tar.gz kernel-qcow2-linux-b4b7b772e8b018286482d8d1fba7804ceac56a64.tar.xz kernel-qcow2-linux-b4b7b772e8b018286482d8d1fba7804ceac56a64.zip | |
stmmac: adding DT parameter for LPI tx clock gating
This patch adds a new parameter to the stmmac DT: snps,en-tx-lpi-clockgating.
It was ported from synopsys/dwc_eth_qos.c and it is useful if lpi tx clock
gating is needed by stmmac users also.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Tested-by: Niklas Cassel <niklas.cassel@axis.com>
Reviewed-by: Lars Persson <larper@axis.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index 02eab798050d..834f40f08208 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -137,7 +137,8 @@ static void dwmac4_get_umac_addr(struct mac_device_info *hw, GMAC_ADDR_LOW(reg_n)); } -static void dwmac4_set_eee_mode(struct mac_device_info *hw) +static void dwmac4_set_eee_mode(struct mac_device_info *hw, + bool en_tx_lpi_clockgating) { void __iomem *ioaddr = hw->pcsr; u32 value; @@ -149,6 +150,9 @@ static void dwmac4_set_eee_mode(struct mac_device_info *hw) value = readl(ioaddr + GMAC4_LPI_CTRL_STATUS); value |= GMAC4_LPI_CTRL_STATUS_LPIEN | GMAC4_LPI_CTRL_STATUS_LPITXA; + if (en_tx_lpi_clockgating) + value |= GMAC4_LPI_CTRL_STATUS_LPITCSE; + writel(value, ioaddr + GMAC4_LPI_CTRL_STATUS); } |