From 45853413e2396e6a603d35e21d75712029a4cb19 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Beh=C3=BAn?= <marek.behun@nic.cz>
Date: Mon, 7 Jun 2021 16:34:48 +0200
Subject: [PATCH] arm: mvebu: turris_mox: start blinking PHY LEDs when entering
rescue
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Configure blinking on ethernet PHY LEDs on the MOX A board when entering
rescue mode via reset button.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
---
board/CZ.NIC/turris_mox/turris_mox.c | 35 ++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/board/CZ.NIC/turris_mox/turris_mox.c b/board/CZ.NIC/turris_mox/turris_mox.c
index a78f33661e..44c272c7cb 100644
--- a/board/CZ.NIC/turris_mox/turris_mox.c
+++ b/board/CZ.NIC/turris_mox/turris_mox.c
@@ -377,6 +377,38 @@ int misc_init_r(void)
return 0;
}
+static void mox_phy_modify(struct phy_device *phydev, int page, int reg,
+ u16 mask, u16 set)
+{
+ int val;
+
+ val = phydev->drv->readext(phydev, MDIO_DEVAD_NONE, page, reg);
+ val &= ~mask;
+ val |= set;
+ phydev->drv->writeext(phydev, MDIO_DEVAD_NONE, page, reg, val);
+}
+
+static void mox_phy_leds_start_blinking(void)
+{
+ struct phy_device *phydev;
+ struct mii_dev *bus;
+
+ bus = miiphy_get_dev_by_name("neta@30000");
+ if (!bus) {
+ printf("Cannot get MDIO bus device!\n");
+ return;
+ }
+
+ phydev = phy_find_by_mask(bus, BIT(1), PHY_INTERFACE_MODE_RGMII);
+ if (!phydev) {
+ printf("Cannot get ethernet PHY!\n");
+ return;
+ }
+
+ mox_phy_modify(phydev, 3, 0x12, 0x700, 0x400);
+ mox_phy_modify(phydev, 3, 0x10, 0xff, 0xbb);
+}
+
static bool read_reset_button(void)
{
struct udevice *button, *led;
@@ -424,6 +456,9 @@ static void handle_reset_button(void)
/* Ensure bootcmd_rescue is used by distroboot */
env_set("boot_targets", "rescue");
+ /* start blinking PHY LEDs */
+ mox_phy_leds_start_blinking();
+
printf("RESET button was pressed, overwriting boot_targets!\n");
} else {
/*
--
2.39.5