From: Marek Behún <marek.behun@nic.cz>
Date: Mon, 7 Jun 2021 14:34:48 +0000 (+0200)
Subject: arm: mvebu: turris_mox: start blinking PHY LEDs when entering rescue
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=45853413e2396e6a603d35e21d75712029a4cb19;p=u-boot.git

arm: mvebu: turris_mox: start blinking PHY LEDs when entering rescue

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>
---

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 {
 		/*