From 7c6cd70ffd0ffe4ec95b6eca375a4e5dd5003819 Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Wed, 16 Apr 2025 11:09:33 +0100 Subject: [PATCH] net: stmmac: dwc-qos: use PHY clock-stop capability Use the PHY clock-stop capability when programming the MAC LPI mode, which allows the transmit clock to the PHY to be gated. Tested on the Jetson Xavier NX platform. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/E1u4zi1-000xHh-57@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c index 583b5c071cd1..fa900b4991d0 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c @@ -252,7 +252,8 @@ bypass_clk_reset_gpio: plat_dat->fix_mac_speed = tegra_eqos_fix_speed; plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate; plat_dat->bsp_priv = eqos; - plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE; + plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE | + STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP; return 0; -- 2.25.1