diff mbox series

[net-next,v2,1/3] net: phy: realtek: add support for reading MDIO_MMD_VEND2 regs on RTL8125/RTL8126

Message ID e821b302-5fe6-49ab-aabd-05da500581c0@gmail.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series net: phy: realtek: add hwmon support | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1 this patch: 1
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 2 this patch: 2
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 24 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Heiner Kallweit Jan. 11, 2025, 8:49 p.m. UTC 
RTL8125/RTL8126 don't support MMD access to the internal PHY, but
provide a mechanism to access at least all MDIO_MMD_VEND2 registers.
By exposing this mechanism standard MMD access functions can be used
to access the MDIO_MMD_VEND2 registers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/phy/realtek.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

Comments

Andrew Lunn Jan. 11, 2025, 9:41 p.m. UTC | #1 
On Sat, Jan 11, 2025 at 09:49:31PM +0100, Heiner Kallweit wrote:
> RTL8125/RTL8126 don't support MMD access to the internal PHY, but
> provide a mechanism to access at least all MDIO_MMD_VEND2 registers.
> By exposing this mechanism standard MMD access functions can be used
> to access the MDIO_MMD_VEND2 registers.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew
diff mbox series

Patch

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index f65d7f1f3..af9874143 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -736,7 +736,11 @@  static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
 {
 	int ret;
 
-	if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) {
+	if (devnum == MDIO_MMD_VEND2) {
+		rtl821x_write_page(phydev, regnum >> 4);
+		ret = __phy_read(phydev, 0x10 + ((regnum & 0xf) >> 1));
+		rtl821x_write_page(phydev, 0);
+	} else if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) {
 		rtl821x_write_page(phydev, 0xa5c);
 		ret = __phy_read(phydev, 0x12);
 		rtl821x_write_page(phydev, 0);
@@ -760,7 +764,11 @@  static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
 {
 	int ret;
 
-	if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
+	if (devnum == MDIO_MMD_VEND2) {
+		rtl821x_write_page(phydev, regnum >> 4);
+		ret = __phy_write(phydev, 0x10 + ((regnum & 0xf) >> 1), val);
+		rtl821x_write_page(phydev, 0);
+	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
 		rtl821x_write_page(phydev, 0xa5d);
 		ret = __phy_write(phydev, 0x10, val);
 		rtl821x_write_page(phydev, 0);