1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
Downloaded from:
https://patchwork.ozlabs.org/project/uboot/patch/20210406151059.1187379-1-icenowy@aosc.io
From patchwork Tue Apr 6 15:10:59 2021
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Icenowy Zheng <icenowy@aosc.io>
X-Patchwork-Id: 1462876
X-Patchwork-Delegate: ykai007@gmail.com
Return-Path: <u-boot-bounces@lists.denx.de>
X-Original-To: incoming@patchwork.ozlabs.org
Delivered-To: patchwork-incoming@bilbo.ozlabs.org
Authentication-Results: ozlabs.org;
spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de
(client-ip=85.214.62.61; helo=phobos.denx.de;
envelope-from=u-boot-bounces@lists.denx.de; receiver=<UNKNOWN>)
Authentication-Results: ozlabs.org;
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=mymailcheap.com header.i=@mymailcheap.com
header.a=rsa-sha256 header.s=default header.b=unszVtqT;
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=aosc.io header.i=@aosc.io header.a=rsa-sha256
header.s=default header.b=mWwYCh9A;
dkim-atps=neutral
Received: from phobos.denx.de (phobos.denx.de [85.214.62.61])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest
SHA256)
(No client certificate requested)
by ozlabs.org (Postfix) with ESMTPS id 4FF9wc3GdNz9sW1
for <incoming@patchwork.ozlabs.org>; Wed, 7 Apr 2021 01:11:42 +1000 (AEST)
Received: from h2850616.stratoserver.net (localhost [IPv6:::1])
by phobos.denx.de (Postfix) with ESMTP id C1F9C8040A;
Tue, 6 Apr 2021 17:11:32 +0200 (CEST)
Authentication-Results: phobos.denx.de;
dmarc=none (p=none dis=none) header.from=aosc.io
Authentication-Results: phobos.denx.de;
spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de
Authentication-Results: phobos.denx.de;
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=mymailcheap.com header.i=@mymailcheap.com
header.b="unszVtqT";
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=aosc.io header.i=@aosc.io header.b="mWwYCh9A";
dkim-atps=neutral
Received: by phobos.denx.de (Postfix, from userid 109)
id E4F22805B4; Tue, 6 Apr 2021 17:11:30 +0200 (CEST)
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de
X-Spam-Level:
X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE autolearn=ham
autolearn_force=no version=3.4.2
Received: from relay3.mymailcheap.com (relay3.mymailcheap.com
[217.182.66.161])
(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
(No client certificate requested)
by phobos.denx.de (Postfix) with ESMTPS id 2FC4A8039D
for <u-boot@lists.denx.de>; Tue, 6 Apr 2021 17:11:27 +0200 (CEST)
Authentication-Results: phobos.denx.de;
dmarc=none (p=none dis=none) header.from=aosc.io
Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=icenowy@aosc.io
Received: from filter2.mymailcheap.com (filter2.mymailcheap.com
[91.134.140.82])
by relay3.mymailcheap.com (Postfix) with ESMTPS id A6AC13ECDF;
Tue, 6 Apr 2021 17:11:26 +0200 (CEST)
Received: from localhost (localhost [127.0.0.1])
by filter2.mymailcheap.com (Postfix) with ESMTP id 88D512A915;
Tue, 6 Apr 2021 17:11:26 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mymailcheap.com;
s=default; t=1617721886;
bh=qb5gt5o7M9qjdJd67A3WHGZp/76w4s4FS6+u1VuEh/o=;
h=From:To:Cc:Subject:Date:From;
b=unszVtqTnO9MGZVbgLH5H0cMo3VfQ+g5377blmOUcrtzMSqNbDD5SM25MUhlTUKiB
hTFq4L53gszBYfRPfh7Z5XgNVERULL5Zx0+WnVjZ7kUIp/wS3IQqxe81ChoFEsLTr8
22UB9NN3OSVkuN/jRAzX+lKpugVGBHwOCjZBZukQ=
Received: from filter2.mymailcheap.com ([127.0.0.1])
by localhost (filter2.mymailcheap.com [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id V9lVOgo6gApH; Tue, 6 Apr 2021 17:11:25 +0200 (CEST)
Received: from mail20.mymailcheap.com (mail20.mymailcheap.com [51.83.111.147])
(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by filter2.mymailcheap.com (Postfix) with ESMTPS;
Tue, 6 Apr 2021 17:11:25 +0200 (CEST)
Received: from [213.133.102.83] (ml.mymailcheap.com [213.133.102.83])
by mail20.mymailcheap.com (Postfix) with ESMTP id C9EA3400B6;
Tue, 6 Apr 2021 15:11:24 +0000 (UTC)
Authentication-Results: mail20.mymailcheap.com; dkim=pass (1024-bit key;
unprotected) header.d=aosc.io header.i=@aosc.io header.b="mWwYCh9A";
dkim-atps=neutral
AI-Spam-Status: Not processed
Received: from ice-e5v2.lan (unknown [59.41.163.135])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest
SHA256) (No client certificate requested)
by mail20.mymailcheap.com (Postfix) with ESMTPSA id 251F840C16;
Tue, 6 Apr 2021 15:11:10 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=aosc.io; s=default;
t=1617721874; bh=qb5gt5o7M9qjdJd67A3WHGZp/76w4s4FS6+u1VuEh/o=;
h=From:To:Cc:Subject:Date:From;
b=mWwYCh9AM8eRWm9hiEqirytotj/G/C1p9r2fd0zUxPhS0UQH+kw6L3RWZnsfmXAYq
HmYFiM3ktIfwevqQw89tOi8c2ktb49iYOyHXkfi8hTZl1dNsJDS94uyzBiHYY+U7x5
P0aTRRaL5C8ua2c1GedoPx06nrARO/KMEFy39rxI=
From: Icenowy Zheng <icenowy@aosc.io>
To: Simon Glass <sjg@chromium.org>, Kever Yang <kever.yang@rock-chips.com>,
Frank Wang <frank.wang@rock-chips.com>,
Jagan Teki <jagan@amarulasolutions.com>
Cc: u-boot@lists.denx.de,
Icenowy Zheng <icenowy@aosc.io>
Subject: [PATCH] phy: rockchip: inno-usb2: fix hang when multiple controllers
exit
Date: Tue, 6 Apr 2021 23:10:59 +0800
Message-Id: <20210406151059.1187379-1-icenowy@aosc.io>
X-Mailer: git-send-email 2.30.2
MIME-Version: 1.0
X-Rspamd-Server: mail20.mymailcheap.com
X-Spamd-Result: default: False [4.90 / 20.00]; RCVD_VIA_SMTP_AUTH(0.00)[];
ARC_NA(0.00)[]; R_DKIM_ALLOW(0.00)[aosc.io:s=default];
RECEIVED_SPAMHAUS_PBL(0.00)[59.41.163.135:received];
FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[];
R_MISSING_CHARSET(2.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[];
MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[aosc.io];
BROKEN_CONTENT_TYPE(1.50)[]; R_SPF_SOFTFAIL(0.00)[~all];
RCPT_COUNT_FIVE(0.00)[6]; ML_SERVERS(-3.10)[213.133.102.83];
DKIM_TRACE(0.00)[aosc.io:+]; MID_CONTAINS_FROM(1.00)[];
RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[];
MIME_TRACE(0.00)[0:+];
ASN(0.00)[asn:24940, ipnet:213.133.96.0/19, country:DE];
RCVD_COUNT_TWO(0.00)[2];
HFILTER_HELO_BAREIP(3.00)[213.133.102.83,1]
X-Rspamd-Queue-Id: C9EA3400B6
X-BeenThere: u-boot@lists.denx.de
X-Mailman-Version: 2.1.34
Precedence: list
List-Id: U-Boot discussion <u-boot.lists.denx.de>
List-Unsubscribe: <https://lists.denx.de/options/u-boot>,
<mailto:u-boot-request@lists.denx.de?subject=unsubscribe>
List-Archive: <https://lists.denx.de/pipermail/u-boot/>
List-Post: <mailto:u-boot@lists.denx.de>
List-Help: <mailto:u-boot-request@lists.denx.de?subject=help>
List-Subscribe: <https://lists.denx.de/listinfo/u-boot>,
<mailto:u-boot-request@lists.denx.de?subject=subscribe>
Errors-To: u-boot-bounces@lists.denx.de
Sender: "U-Boot" <u-boot-bounces@lists.denx.de>
X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de
X-Virus-Status: Clean
The OHCI and EHCI controllers are both bound to the same PHY. They will
both do init and power_on operations when the controller is brought up
and both do power_off and exit when the controller is stopped. However,
the PHY uclass of U-Boot is not as sane as we thought -- they won't
maintain a status mark for PHYs, and thus the functions of the PHYs
could be called for multiple times. Calling init/power_on for multiple
times have no severe problems, however calling power_off/exit for
multiple times have a problem -- the first exit call will stop the PHY
clock, and power_off/exit calls after it still trying to write to PHY
registers. The write operation to PHY registers will fail because clock
is already stopped.
Adapt the count mechanism from phy-sun4i-usb to both init/exit and
power_on/power_off functions to phy-rockchip-inno-usb2 to fix this
problem. With this stopping USB controllers (manually or before booting
a kernel) will work.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Fixes: ac97a9ece14e ("phy: rockchip: Add Rockchip USB2PHY driver")
Tested-by: Peter Robinson <pbrobinson@gmail.com>
---
drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 62b8ba3a4a..be9cc99d90 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -62,6 +62,8 @@ struct rockchip_usb2phy {
void *reg_base;
struct clk phyclk;
const struct rockchip_usb2phy_cfg *phy_cfg;
+ int init_count;
+ int power_on_count;
};
static inline int property_enable(void *reg_base,
@@ -92,6 +94,10 @@ static int rockchip_usb2phy_power_on(struct phy *phy)
struct rockchip_usb2phy *priv = dev_get_priv(parent);
const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+ priv->power_on_count++;
+ if (priv->power_on_count != 1)
+ return 0;
+
property_enable(priv->reg_base, &port_cfg->phy_sus, false);
/* waiting for the utmi_clk to become stable */
@@ -106,6 +112,10 @@ static int rockchip_usb2phy_power_off(struct phy *phy)
struct rockchip_usb2phy *priv = dev_get_priv(parent);
const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+ priv->power_on_count--;
+ if (priv->power_on_count != 0)
+ return 0;
+
property_enable(priv->reg_base, &port_cfg->phy_sus, true);
return 0;
@@ -118,6 +128,10 @@ static int rockchip_usb2phy_init(struct phy *phy)
const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
int ret;
+ priv->init_count++;
+ if (priv->init_count != 1)
+ return 0;
+
ret = clk_enable(&priv->phyclk);
if (ret) {
dev_err(phy->dev, "failed to enable phyclk (ret=%d)\n", ret);
@@ -140,6 +154,10 @@ static int rockchip_usb2phy_exit(struct phy *phy)
struct udevice *parent = dev_get_parent(phy->dev);
struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ priv->init_count--;
+ if (priv->init_count != 0)
+ return 0;
+
clk_disable(&priv->phyclk);
return 0;
@@ -212,6 +230,9 @@ static int rockchip_usb2phy_probe(struct udevice *dev)
return ret;
}
+ priv->power_on_count = 0;
+ priv->init_count = 0;
+
return 0;
}
|
