From 39821d58c91d97b48a36ea340adedc4c9b8f5b85 Mon Sep 17 00:00:00 2001 From: Murali Karicheri Date: Fri, 17 Apr 2020 11:12:09 -0400 Subject: [PATCH] net: ethernet: ti: am65-cpsw-nuss: enable 10Mbps link speed in rgmii mode In RGMII mode the 10Mbps link speed is supported only when CPSW2G MAC SL is configured for External Control ("in band") mode CPSW_PN_MAC_CONTROL_REG.CTL_EN(18) = 1 Hence update am65_cpsw_update_link() to follow documentation. Signed-off-by: Murali Karicheri Reviewed-by: Grygorii Strashko --- drivers/net/ti/am65-cpsw-nuss.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ti/am65-cpsw-nuss.c b/drivers/net/ti/am65-cpsw-nuss.c index 2b77213001..7531a07203 100644 --- a/drivers/net/ti/am65-cpsw-nuss.c +++ b/drivers/net/ti/am65-cpsw-nuss.c @@ -61,6 +61,7 @@ #define AM65_CPSW_MACSL_CTL_REG 0x0 #define AM65_CPSW_MACSL_CTL_REG_IFCTL_A BIT(15) +#define AM65_CPSW_MACSL_CTL_EXT_EN BIT(18) #define AM65_CPSW_MACSL_CTL_REG_GIG BIT(7) #define AM65_CPSW_MACSL_CTL_REG_GMII_EN BIT(5) #define AM65_CPSW_MACSL_CTL_REG_LOOPBACK BIT(1) @@ -187,6 +188,9 @@ static int am65_cpsw_update_link(struct am65_cpsw_priv *priv) AM65_CPSW_MACSL_CTL_REG_GMII_EN; if (phy->speed == 1000) mac_control |= AM65_CPSW_MACSL_CTL_REG_GIG; + if (phy->speed == 10 && phy_interface_is_rgmii(phy)) + /* Can be used with in band mode only */ + mac_control |= AM65_CPSW_MACSL_CTL_EXT_EN; if (phy->duplex == DUPLEX_FULL) mac_control |= AM65_CPSW_MACSL_CTL_REG_FULL_DUPLEX; if (phy->speed == 100) -- 2.39.5