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net: phy: realtek: add led-link-select for RTL8221

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RTL8221B PHYs will select the different speeds for 3 LEDs to 10M/100M/1G
respectively by default. Some devices like TP-LINK TL-XDR6088/TL-XDR6086
have only one LED connects to the PHY chip LED0. If we didn't change the
default settings, the LED will only blink at 10M speed.

This patch allows configuring LED link select bitmask from DT. And it
has been tested with TP-Link XDR6088 with different DT configurations.

Signed-off-by: Yangyu Chen <cyy@cyyself.name>
This commit is contained in:
Yangyu Chen 2023-04-23 20:27:17 +08:00 committed by AmadeusGhost
parent 21364cecb2
commit 981c497ae4
1 changed files with 69 additions and 0 deletions
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69
target/linux/generic/hack-5.15/766-net-phy-realtek-add-led-link-select-for-RTL8221.patch Normal file
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@ -0,0 +1,69 @@
From f9e17c264d316611c26b98ad1a3ca01c289c67b4 Mon Sep 17 00:00:00 2001
From: Yangyu Chen <cyy@cyyself.name>
Date: Sun, 23 Apr 2023 20:06:41 +0800
Subject: [PATCH] net: phy: realtek: add led-link-select for RTL8221
RTL8221B PHYs will select the different speeds for 3 LEDs to 10M/100M/1G
respectively by default. Some devices like TP-Link TL-XDR6088/TL-XDR6086
have only one LED connects to the PHY chip LED0. If we didn't change the
default settings, the LED will only blink at 10M speed.
This patch allows configuring LED link select bitmask from DT. And it
has been tested with TP-Link XDR6088 with different DT configurations.
Signed-off-by: Yangyu Chen <cyy@cyyself.name>
---
drivers/net/phy/realtek.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -66,6 +66,10 @@
#define RTL8221B_PHYCR1_ALDPS_EN BIT(2)
#define RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN BIT(12)
+#define RTL8221B_NR_LEDS 3
+#define RTL8221B_LED_LINK_SELECT 0xd032
+#define RTL8221B_LED_LINK_SELECT_OFFSET 0x2
+
#define RTL8366RB_POWER_SAVE 0x15
#define RTL8366RB_POWER_SAVE_ON BIT(12)
@@ -885,6 +889,28 @@ static irqreturn_t rtl9000a_handle_inter
return IRQ_HANDLED;
}
+static int rtl8221b_config_led(struct phy_device *phydev) {
+ struct device_node *node = phydev->mdio.dev.of_node;
+ u32 link_select[RTL8221B_NR_LEDS];
+ int i, val;
+
+ val = of_property_read_u32_array(node, "realtek,led-link-select",
+ link_select, RTL8221B_NR_LEDS);
+
+ if (val)
+ return 0;
+
+ for (i = 0; i < RTL8221B_NR_LEDS; i++) {
+ val = phy_write_mmd(phydev, RTL8221B_MMD_PHY_CTRL,
+ RTL8221B_LED_LINK_SELECT + i * RTL8221B_LED_LINK_SELECT_OFFSET,
+ link_select[i]);
+ if (val < 0)
+ return val;
+ }
+
+ return 0;
+}
+
static int rtl8221b_config_init(struct phy_device *phydev)
{
u16 option_mode;
@@ -932,7 +958,7 @@ static int rtl8221b_config_init(struct p
phy_read_mmd_poll_timeout(phydev, RTL8221B_MMD_SERDES_CTRL, 0x7587,
val, !(val & BIT(0)), 500, 100000, false);
- return 0;
+ return rtl8221b_config_led(phydev);
}
static struct phy_driver realtek_drvs[] = {