From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/phy/lantiq/phy-lantiq-rcu-usb2.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/kernel/drivers/phy/lantiq/phy-lantiq-rcu-usb2.c b/kernel/drivers/phy/lantiq/phy-lantiq-rcu-usb2.c
index 5a180f7..29d246e 100644
--- a/kernel/drivers/phy/lantiq/phy-lantiq-rcu-usb2.c
+++ b/kernel/drivers/phy/lantiq/phy-lantiq-rcu-usb2.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Lantiq XWAY SoC RCU module based USB 1.1/2.0 PHY driver
*
* Copyright (C) 2016 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
* Copyright (C) 2017 Hauke Mehrtens <hauke@hauke-m.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/clk.h>
@@ -127,8 +124,16 @@
reset_control_deassert(priv->phy_reset);
ret = clk_prepare_enable(priv->phy_gate_clk);
- if (ret)
+ if (ret) {
dev_err(dev, "failed to enable PHY gate\n");
+ return ret;
+ }
+
+ /*
+ * at least the xrx200 usb2 phy requires some extra time to be
+ * operational after enabling the clock
+ */
+ usleep_range(100, 200);
return ret;
}
@@ -144,7 +149,7 @@
return 0;
}
-static struct phy_ops ltq_rcu_usb2_phy_ops = {
+static const struct phy_ops ltq_rcu_usb2_phy_ops = {
.init = ltq_rcu_usb2_phy_init,
.power_on = ltq_rcu_usb2_phy_power_on,
.power_off = ltq_rcu_usb2_phy_power_off,
@@ -195,10 +200,8 @@
}
priv->phy_reset = devm_reset_control_get_optional(dev, "phy");
- if (IS_ERR(priv->phy_reset))
- return PTR_ERR(priv->phy_reset);
- return 0;
+ return PTR_ERR_OR_ZERO(priv->phy_reset);
}
static int ltq_rcu_usb2_phy_probe(struct platform_device *pdev)
--
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