From 186f38935e28ae700b0fe062dcc6ab345211dcee Mon Sep 17 00:00:00 2001 From: Zhi Li Date: Tue, 7 Jul 2026 14:42:17 +0800 Subject: [PATCH] net: stmmac: eic7700: make RGMII delay properties optional Make rx-internal-delay-ps and tx-internal-delay-ps optional in the EIC7700 DWMAC driver. The driver previously required both properties to be present and would fail probe when they were missing. This restricts valid hardware configurations where RGMII timing is instead provided by the PHY or board design. Update the driver to treat missing delay properties as zero delay, allowing systems without explicit MAC-side delay tuning to operate correctly. This aligns the driver behavior with the updated device tree binding and provides a safe default configuration when MAC-side delay programming is not required. Signed-off-by: Zhi Li Link: https://patch.msgid.link/20260707064218.1316-1-lizhi2@eswincomputing.com Signed-off-by: Paolo Abeni --- drivers/net/ethernet/stmicro/stmmac/dwmac-eic7700.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-eic7700.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-eic7700.c index 4ac979d874d6..ec99b597aeaf 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-eic7700.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-eic7700.c @@ -165,9 +165,6 @@ static int eic7700_dwmac_probe(struct platform_device *pdev) dwc_priv->eth_clk_dly_param &= ~EIC7700_ETH_RX_ADJ_DELAY; dwc_priv->eth_clk_dly_param |= FIELD_PREP(EIC7700_ETH_RX_ADJ_DELAY, val); - } else { - return dev_err_probe(&pdev->dev, -EINVAL, - "missing required property rx-internal-delay-ps\n"); } /* Read tx-internal-delay-ps and update tx_clk delay */ @@ -187,9 +184,6 @@ static int eic7700_dwmac_probe(struct platform_device *pdev) dwc_priv->eth_clk_dly_param &= ~EIC7700_ETH_TX_ADJ_DELAY; dwc_priv->eth_clk_dly_param |= FIELD_PREP(EIC7700_ETH_TX_ADJ_DELAY, val); - } else { - return dev_err_probe(&pdev->dev, -EINVAL, - "missing required property tx-internal-delay-ps\n"); } dwc_priv->eic7700_hsp_regmap =