net: stmmac: starfive: use PHY capability for TX clock stop

Whether the MII transmit clock can be stopped is primarily a property
of the PHY (there is a capability bit that should be checked first.)
Whether the MAC is capable of stopping the transmit clock is a separate
issue, but this is already handled by the core DesignWare MAC code.

Add the flag to allow the stmmac core to use the PHY capability.

Cc: Samin Guo <samin.guo@starfivetech.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tsITu-005vGF-TM@rmk-PC.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
index 5e31cb3bb4b839957187371fdaf321da0dc5fb8d..2013d7477eb761473107254b1ecbf5c5e957be3d 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -124,6 +124,7 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
                plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;
 
        dwmac->dev = &pdev->dev;
+       plat_dat->flags |= STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP;
        plat_dat->bsp_priv = dwmac;
        plat_dat->dma_cfg->dche = true;