From: Roger Quadros <rogerq@ti.com>
To: paul@pwsan.com, tony@atomide.com
Cc: bcousson@baylibre.com, t-kristo@ti.com, nsekhar@ti.com,
linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org,
Roger Quadros <rogerq@ti.com>
Subject: [PATCH 4/4] ARM: DRA7: hwmod_data: Prevent wait_target_disable error for usb_otg_ss
Date: Mon, 13 Mar 2017 13:53:16 +0200 [thread overview]
Message-ID: <1489405996-10718-5-git-send-email-rogerq@ti.com> (raw)
In-Reply-To: <1489405996-10718-1-git-send-email-rogerq@ti.com>
It seems that if L3_INIT clkdomain is kept in HW_AUTO while usb_otg_ss
is in use then there are random chances that the usb_otg_ss module
will fail to completely idle. i.e. IDLEST = 0x2 instead of 0x3.
Preventing L3_INIT from HW_AUTO while usb_otg_ss module is in use
fixes this issue.
We don't know yet if usb_otg_ss instances 3 and 4 are affected by this
issue or not so don't add this flag for those instances.
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
index 896f238..2d1141a 100644
--- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
@@ -2702,6 +2702,7 @@ static struct omap_hwmod dra7xx_usb_otg_ss1_hwmod = {
.class = &dra7xx_usb_otg_ss_hwmod_class,
.clkdm_name = "l3init_clkdm",
.main_clk = "dpll_core_h13x2_ck",
+ .flags = HWMOD_CLKDM_NOAUTO,
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_L3INIT_USB_OTG_SS1_CLKCTRL_OFFSET,
@@ -2723,6 +2724,7 @@ static struct omap_hwmod dra7xx_usb_otg_ss2_hwmod = {
.class = &dra7xx_usb_otg_ss_hwmod_class,
.clkdm_name = "l3init_clkdm",
.main_clk = "dpll_core_h13x2_ck",
+ .flags = HWMOD_CLKDM_NOAUTO,
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_L3INIT_USB_OTG_SS2_CLKCTRL_OFFSET,
--
2.7.4
next prev parent reply other threads:[~2017-03-13 11:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-13 11:53 [PATCH 0/4] ARM: DRA7: Fix DCAN1 stuck-in-transition Roger Quadros
2017-03-13 11:53 ` [PATCH 1/4] ARM: OMAP2+: omap_hwmod: provide space for more hwmod flags Roger Quadros
2017-03-13 13:35 ` Sekhar Nori
2017-03-14 10:49 ` Roger Quadros
2017-03-14 12:07 ` [PATCH v2 " Roger Quadros
2017-03-13 11:53 ` [PATCH 2/4] ARM: OMAP2+ hwmod: Allow modules to disable HW_AUTO Roger Quadros
2017-03-14 15:48 ` Tony Lindgren
2017-03-16 7:59 ` Roger Quadros
2017-03-16 8:04 ` Roger Quadros
2017-03-16 15:24 ` Tony Lindgren
2017-03-17 8:39 ` Roger Quadros
2017-03-17 8:58 ` [PATCH v2 " Roger Quadros
2017-03-23 20:59 ` Tony Lindgren
2017-03-13 11:53 ` [PATCH 3/4] ARM: DRA7: hwmod: Fix DCAN1 stuck in transition Roger Quadros
2017-03-13 11:53 ` Roger Quadros [this message]
2017-03-13 11:55 ` [PATCH 0/4] ARM: DRA7: Fix DCAN1 stuck-in-transition Roger Quadros
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1489405996-10718-5-git-send-email-rogerq@ti.com \
--to=rogerq@ti.com \
--cc=bcousson@baylibre.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=nsekhar@ti.com \
--cc=paul@pwsan.com \
--cc=t-kristo@ti.com \
--cc=tony@atomide.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).