From dce32ece3bb8f3768d04d01cbe146b7ac5ccdbde Mon Sep 17 00:00:00 2001 From: Ryan Wanner Date: Mon, 14 Jul 2025 09:37:00 -0700 Subject: [PATCH] net: cadence: macb: Expose REFCLK as a device tree property The RMII and RGMII can both support internal or external provided REFCLKs 50MHz and 125MHz respectively. Since this is dependent on the board that the SoC is on this needs to be set via the device tree. This property flag is checked in the MACB DT node so the REFCLK cap is configured the correct way for the RMII or RGMII is configured on the board. Signed-off-by: Ryan Wanner Link: https://patch.msgid.link/7f9b65896d6b7b48275bc527b72a16347f8ce10a.1752510727.git.Ryan.Wanner@microchip.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/cadence/macb_main.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 53aaf6b08e39..22365f263645 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -4109,8 +4109,12 @@ static const struct net_device_ops macb_netdev_ops = { static void macb_configure_caps(struct macb *bp, const struct macb_config *dt_conf) { + struct device_node *np = bp->pdev->dev.of_node; + bool refclk_ext; u32 dcfg; + refclk_ext = of_property_read_bool(np, "cdns,refclk-ext"); + if (dt_conf) bp->caps = dt_conf->caps; @@ -4141,6 +4145,9 @@ static void macb_configure_caps(struct macb *bp, } } + if (refclk_ext) + bp->caps |= MACB_CAPS_USRIO_HAS_CLKEN; + dev_dbg(&bp->pdev->dev, "Cadence caps 0x%08x\n", bp->caps); } -- 2.47.2