From: Stephen Boyd <stephen.boyd@linaro.org>
To: linux-usb@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Andy Gross <andy.gross@linaro.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Neil Armstrong <narmstrong@baylibre.com>,
Arnd Bergmann <arnd@arndb.de>, Felipe Balbi <balbi@kernel.org>,
Peter Chen <peter.chen@nxp.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH v2 06/22] usb: chipidea: Add platform flag for wrapper phy management
Date: Thu, 7 Jul 2016 15:20:57 -0700 [thread overview]
Message-ID: <20160707222114.1673-7-stephen.boyd@linaro.org> (raw)
In-Reply-To: <20160707222114.1673-1-stephen.boyd@linaro.org>
The ULPI phy on qcom platforms needs to be initialized and
powered on after a USB reset and before we toggle the run/stop
bit. Otherwise, the phy locks up and doesn't work properly.
Therefore, add a flag to skip any phy power management in the
core layer, leaving it up to the glue driver to manage.
Cc: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
---
drivers/usb/chipidea/core.c | 6 ++++++
include/linux/usb/chipidea.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 01390e02ee53..532085a096d9 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -361,6 +361,9 @@ static int _ci_usb_phy_init(struct ci_hdrc *ci)
*/
static void ci_usb_phy_exit(struct ci_hdrc *ci)
{
+ if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL)
+ return;
+
if (ci->phy) {
phy_power_off(ci->phy);
phy_exit(ci->phy);
@@ -379,6 +382,9 @@ static int ci_usb_phy_init(struct ci_hdrc *ci)
{
int ret;
+ if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL)
+ return 0;
+
switch (ci->platdata->phy_mode) {
case USBPHY_INTERFACE_MODE_UTMI:
case USBPHY_INTERFACE_MODE_UTMIW:
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index f9be467d6695..d07b162073f7 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -57,6 +57,7 @@ struct ci_hdrc_platform_data {
#define CI_HDRC_OVERRIDE_AHB_BURST BIT(9)
#define CI_HDRC_OVERRIDE_TX_BURST BIT(10)
#define CI_HDRC_OVERRIDE_RX_BURST BIT(11)
+#define CI_HDRC_OVERRIDE_PHY_CONTROL BIT(12) /* Glue layer manages phy */
enum usb_dr_mode dr_mode;
#define CI_HDRC_CONTROLLER_RESET_EVENT 0
#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
--
2.9.0.rc2.8.ga28705d
next prev parent reply other threads:[~2016-07-07 22:27 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-07 22:20 [PATCH v2 00/22] Support qcom's HSIC USB and rewrite USB2 HS phy support Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 01/22] of: device: Support loading a module with OF based modalias Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 02/22] of: device: Export of_device_{get_modalias,uvent_modalias} to modules Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 03/22] usb: ulpi: Support device discovery via device properties Stephen Boyd
2016-07-08 9:04 ` Peter Chen
[not found] ` <147043245520.26915.14153612182716236022@sboyd-linaro>
2016-08-23 19:58 ` Stephen Boyd
2016-08-24 7:31 ` Heikki Krogerus
2016-07-18 2:23 ` Rob Herring
[not found] ` <147043320014.26915.7483025835695600714@sboyd-linaro>
2016-08-23 20:00 ` Stephen Boyd
2016-08-23 23:06 ` Rob Herring
2016-08-24 1:06 ` Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 04/22] usb: chipidea: Only read/write OTGSC from one place Stephen Boyd
2016-07-08 9:14 ` Peter Chen
[not found] ` <147043329762.26915.1413688974325107381@sboyd-linaro>
2016-08-06 7:42 ` Peter Chen
2016-07-07 22:20 ` [PATCH v2 05/22] usb: chipidea: Handle extcon events properly Stephen Boyd
2016-07-07 22:20 ` Stephen Boyd [this message]
2016-07-08 9:25 ` [PATCH v2 06/22] usb: chipidea: Add platform flag for wrapper phy management Peter Chen
[not found] ` <147043356053.26915.10086819023294264100@sboyd-linaro>
2016-08-06 7:59 ` Peter Chen
[not found] ` <147069998158.10825.8595816732650723884@sboyd-linaro>
2016-08-09 0:36 ` Peter Chen
2016-07-07 22:20 ` [PATCH v2 07/22] usb: chipidea: Notify events when switching host mode Stephen Boyd
2016-07-08 9:29 ` Peter Chen
2016-07-07 22:20 ` [PATCH v2 08/22] usb: chipidea: Remove locking in ci_udc_start() Stephen Boyd
2016-07-08 9:45 ` Peter Chen
[not found] ` <147043403652.26915.10865210145828633146@sboyd-linaro>
2016-08-06 7:54 ` Peter Chen
[not found] ` <147070007426.10825.11324896309403492272@sboyd-linaro>
2016-08-09 0:42 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 09/22] usb: chipidea: Kick OTG state machine for AVVIS with vbus extcon Stephen Boyd
2016-07-11 2:25 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 10/22] usb: chipidea: Add support for ULPI PHY bus Stephen Boyd
2016-07-11 3:10 ` Peter Chen
2016-07-11 22:02 ` Stephen Boyd
2016-07-07 22:21 ` [PATCH v2 11/22] usb: chipidea: msm: Mark device as runtime pm active Stephen Boyd
2016-07-11 3:19 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 12/22] usb: chipidea: msm: Rely on core to override AHBBURST Stephen Boyd
2016-07-11 3:24 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 13/22] usb: chipidea: msm: Use hw_write_id_reg() instead of writel Stephen Boyd
2016-07-07 22:21 ` [PATCH v2 14/22] usb: chipidea: msm: Add proper clk and reset support Stephen Boyd
2016-07-11 4:32 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 15/22] usb: chipidea: msm: Mux over secondary phy at the right time Stephen Boyd
2016-07-11 4:43 ` Peter Chen
2016-07-11 22:03 ` Stephen Boyd
2016-07-12 1:07 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 16/22] usb: chipidea: msm: Restore wrapper settings after reset Stephen Boyd
2016-07-11 5:24 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 17/22] usb: chipidea: msm: Make platform data driver local instead of global Stephen Boyd
2016-07-11 5:26 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 18/22] usb: chipidea: msm: Add reset controller for PHY POR bit Stephen Boyd
2016-07-11 5:32 ` Peter Chen
2016-07-11 22:07 ` Stephen Boyd
2016-07-12 1:09 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 19/22] usb: chipidea: msm: Handle phy power states Stephen Boyd
2016-07-11 5:38 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 20/22] usb: chipidea: msm: Be silent on probe defer errors Stephen Boyd
2016-07-11 5:39 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 21/22] phy: Add support for Qualcomm's USB HSIC phy Stephen Boyd
2016-07-18 2:27 ` Rob Herring
2016-07-07 22:21 ` [PATCH v2 22/22] phy: Add support for Qualcomm's USB HS phy Stephen Boyd
2016-07-18 2:28 ` Rob Herring
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