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Changelog: 18aa36238a4d: net: phy: realtek: add interrupt support for RTL8221B 61958b33ef0b: net: phy: realtek: Add RTL8224 cable testing support ffff5c8fc2af: net: phy: realtek: fix rtl8221b-vm-cg name 2c67301584f2: net: phy: realtek: Avoid PHYCR2 access if PHYCR2 not present f63f21e82eca: net: phy: realtek: support for TRIGGER_NETDEV_LINK on RTL8211E and RTL8211F a9b24b3583ae: net: phy: realtek: add error handling to rtl8211f_get_wol Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl> Link: https://github.com/openwrt/openwrt/pull/20650 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
106 lines
3.1 KiB
Diff
106 lines
3.1 KiB
Diff
From 18aa36238a4d835c1644dcccd63d32c7fdd4b310 Mon Sep 17 00:00:00 2001
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From: Jianhui Zhao <zhaojh329@gmail.com>
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Date: Sun, 2 Nov 2025 16:26:37 +0100
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Subject: [PATCH] net: phy: realtek: add interrupt support for RTL8221B
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This commit introduces interrupt support for RTL8221B (C45 mode).
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Interrupts are mapped on the VEND2 page. VEND2 registers are only
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accessible via C45 reads and cannot be accessed by C45 over C22.
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Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>
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[Enable only link state change interrupts]
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Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Link: https://patch.msgid.link/20251102152644.1676482-1-olek2@wp.pl
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/phy/realtek/realtek_main.c | 56 ++++++++++++++++++++++++++
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1 file changed, 56 insertions(+)
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--- a/drivers/net/phy/realtek/realtek_main.c
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+++ b/drivers/net/phy/realtek/realtek_main.c
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@@ -130,6 +130,11 @@
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*/
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#define RTL822X_VND2_C22_REG(reg) (0xa400 + 2 * (reg))
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+#define RTL8221B_VND2_INER 0xa4d2
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+#define RTL8221B_VND2_INER_LINK_STATUS BIT(4)
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+
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+#define RTL8221B_VND2_INSR 0xa4d4
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+
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#define RTL8224_MII_RTCT 0x11
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#define RTL8224_MII_RTCT_ENABLE BIT(0)
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#define RTL8224_MII_RTCT_PAIR_A BIT(4)
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@@ -1772,6 +1777,53 @@ static irqreturn_t rtl9000a_handle_inter
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return IRQ_HANDLED;
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}
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+static int rtl8221b_ack_interrupt(struct phy_device *phydev)
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+{
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+ int err;
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+
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+ err = phy_read_mmd(phydev, MDIO_MMD_VEND2, RTL8221B_VND2_INSR);
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+
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+ return (err < 0) ? err : 0;
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+}
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+
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+static int rtl8221b_config_intr(struct phy_device *phydev)
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+{
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+ int err;
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+
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+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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+ err = rtl8221b_ack_interrupt(phydev);
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+ if (err)
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+ return err;
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+
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+ err = phy_write_mmd(phydev, MDIO_MMD_VEND2, RTL8221B_VND2_INER,
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+ RTL8221B_VND2_INER_LINK_STATUS);
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+ } else {
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+ err = phy_write_mmd(phydev, MDIO_MMD_VEND2,
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+ RTL8221B_VND2_INER, 0);
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+ if (err)
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+ return err;
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+
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+ err = rtl8221b_ack_interrupt(phydev);
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+ }
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+
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+ return err;
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+}
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+
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+static irqreturn_t rtl8221b_handle_interrupt(struct phy_device *phydev)
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+{
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+ int err;
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+
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+ err = rtl8221b_ack_interrupt(phydev);
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+ if (err) {
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+ phy_error(phydev);
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+ return IRQ_NONE;
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+ }
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+
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+ phy_trigger_machine(phydev);
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+
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+ return IRQ_HANDLED;
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+}
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+
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static struct phy_driver realtek_drvs[] = {
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{
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PHY_ID_MATCH_EXACT(0x00008201),
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@@ -1946,6 +1998,8 @@ static struct phy_driver realtek_drvs[]
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}, {
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.match_phy_device = rtl8221b_vb_cg_c45_match_phy_device,
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.name = "RTL8221B-VB-CG 2.5Gbps PHY (C45)",
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+ .config_intr = rtl8221b_config_intr,
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+ .handle_interrupt = rtl8221b_handle_interrupt,
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.probe = rtl822x_probe,
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.config_init = rtl822xb_config_init,
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.get_rate_matching = rtl822xb_get_rate_matching,
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@@ -1970,6 +2024,8 @@ static struct phy_driver realtek_drvs[]
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}, {
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.match_phy_device = rtl8221b_vm_cg_c45_match_phy_device,
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.name = "RTL8221B-VM-CG 2.5Gbps PHY (C45)",
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+ .config_intr = rtl8221b_config_intr,
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+ .handle_interrupt = rtl8221b_handle_interrupt,
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.probe = rtl822x_probe,
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.config_init = rtl822xb_config_init,
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.get_rate_matching = rtl822xb_get_rate_matching,
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