[openwrt/openwrt] realtek: dsa: rtl838x: drop redundant SMI_GLB_CTRL accesses

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/47ce4d8a718de4ca94d6a8e50e657479a8d81b41

commit 47ce4d8a718de4ca94d6a8e50e657479a8d81b41
Author: Bjørn Mork <bjorn at mork.no>
AuthorDate: Wed Feb 4 16:02:08 2026 +0100

    realtek: dsa: rtl838x: drop redundant SMI_GLB_CTRL accesses
    
    Bit 15 of the rtl838x SMI_GLB_CTRL register is set early during mdio reset
    and never cleared.  There is no need to set it again.
    
    Signed-off-by: Bjørn Mork <bjorn at mork.no>
    Link: https://github.com/openwrt/openwrt/pull/21868
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/common.c | 9 ++-------
 target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c    | 2 --
 2 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/common.c b/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/common.c
index a24009ecd6..8ed55f55d7 100644
--- a/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/common.c
+++ b/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/common.c
@@ -366,14 +366,9 @@ static int rtl83xx_mdio_probe(struct rtl838x_switch_priv *priv)
 	/* Disable MAC polling the PHY so that we can start configuration */
 	priv->r->set_port_reg_le(0ULL, priv->r->smi_poll_ctrl);
 
-	/* Enable PHY control via SoC */
-	if (priv->family_id == RTL8380_FAMILY_ID) {
-		/* Enable PHY control by telling SoC that "PHY patching is done" */
-		sw_w32_mask(0, BIT(15), RTL838X_SMI_GLB_CTRL);
-	} else if (priv->family_id == RTL8390_FAMILY_ID) {
-		/* Disable PHY polling via SoC */
+	/* Disable PHY polling via SoC */
+	if (priv->family_id == RTL8390_FAMILY_ID)
 		sw_w32_mask(BIT(7), 0, RTL839X_SMI_GLB_CTRL);
-	}
 
 	return 0;
 }
diff --git a/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c b/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c
index 29052ff1b9..d33e0fa449 100644
--- a/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c
+++ b/target/linux/realtek/files-6.12/drivers/net/dsa/rtl83xx/dsa.c
@@ -60,8 +60,6 @@ static void rtldsa_enable_phy_polling(struct rtl838x_switch_priv *priv)
 	/* PHY update complete, there is no global PHY polling enable bit on the 93xx */
 	if (priv->family_id == RTL8390_FAMILY_ID)
 		sw_w32_mask(0, BIT(7), RTL839X_SMI_GLB_CTRL);
-	else if (priv->family_id == RTL8380_FAMILY_ID)
-		sw_w32_mask(0, BIT(15), RTL838X_SMI_GLB_CTRL);
 }
 
 const struct rtldsa_mib_list_item rtldsa_838x_mib_list[] = {