From f593020a288bc38ed5f7d0ec6a3b70fa8f1e8bf6 Mon Sep 17 00:00:00 2001
From: Chuanhong Guo <gch981213@gmail.com>
Date: Tue, 24 Jul 2018 21:19:04 +0800
Subject: [PATCH] ath79: ag71xx: assert a switch reset if defined in dts.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
---
.../drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
index f91144da6e..173c16a53d 100644
--- a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
+++ b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c
@@ -1218,6 +1218,7 @@ ag71xx_ar7240_probe(struct mdio_device *mdiodev)
struct mii_bus *mii = mdiodev->bus;
struct ar7240sw *as;
struct switch_dev *swdev;
+ struct reset_control *switch_reset;
u32 ctrl;
int phy_if_mode, err, i;
@@ -1231,6 +1232,14 @@ ag71xx_ar7240_probe(struct mdio_device *mdiodev)
swdev = &as->swdev;
+ switch_reset = devm_reset_control_get_optional(&mdiodev->dev, "switch");
+ if (switch_reset) {
+ reset_control_assert(switch_reset);
+ msleep(50);
+ reset_control_deassert(switch_reset);
+ msleep(200);
+ }
+
ctrl = ar7240sw_reg_read(mii, AR7240_REG_MASK_CTRL);
as->ver = (ctrl >> AR7240_MASK_CTRL_VERSION_S) &
AR7240_MASK_CTRL_VERSION_M;
--
2.25.1