From: Ofer Heifetz <oferh@xxxxxxxxxxx>
The mvebu xHCI host driver does not have suspend/resume support. Use of
the XHCI_RESET_ON_RESUME quirk is mandatory in order to avoid failures
after resume. This will work only if no USB device is plugged-in.
While at it, mention in the Kconfig file that this IP is also present
on the A3700 SoC.
Signed-off-by: Ofer Heifetz <oferh@xxxxxxxxxxx>
[miquel.raynal@xxxxxxxxxxx: Reword the commit message]
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
drivers/usb/host/Kconfig | 2 +-
drivers/usb/host/xhci-mvebu.c | 11 +++++++++++
drivers/usb/host/xhci-mvebu.h | 6 ++++++
drivers/usb/host/xhci-plat.c | 7 +++++++
4 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 16758b12a5e9..2f9b099c10f7 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -75,7 +75,7 @@ config USB_XHCI_MVEBU
depends on ARCH_MVEBU || COMPILE_TEST
---help---
Say 'Y' to enable the support for the xHCI host controller
- found in Marvell Armada 375/38x ARM SOCs.
+ found in Marvell Armada 375/38x/3700 ARM SOCs.
config USB_XHCI_RCAR
tristate "xHCI support for Renesas R-Car SoCs"
diff --git a/drivers/usb/host/xhci-mvebu.c b/drivers/usb/host/xhci-mvebu.c
index 32e158568788..60651a50770f 100644
--- a/drivers/usb/host/xhci-mvebu.c
+++ b/drivers/usb/host/xhci-mvebu.c
@@ -13,6 +13,7 @@
#include <linux/usb/hcd.h>
#include "xhci-mvebu.h"
+#include "xhci.h"
#define USB3_MAX_WINDOWS 4
#define USB3_WIN_CTRL(w) (0x0 + ((w) * 8))
@@ -72,3 +73,13 @@ int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd)
return 0;
}
+
+int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd)
+{
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+
+ /* Without reset on resume, the HC won't work at all */
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+
+ return 0;
+}
diff --git a/drivers/usb/host/xhci-mvebu.h b/drivers/usb/host/xhci-mvebu.h
index 09791df2cec0..ca0a3a5721dd 100644
--- a/drivers/usb/host/xhci-mvebu.h
+++ b/drivers/usb/host/xhci-mvebu.h
@@ -12,10 +12,16 @@ struct usb_hcd;
#if IS_ENABLED(CONFIG_USB_XHCI_MVEBU)
int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd);
+int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd);
#else
static inline int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd)
{
return 0;
}
+
+static inline int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd)
+{
+ return 0;
+}
#endif
#endif /* __LINUX_XHCI_MVEBU_H */
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 32b5574ad5c5..9eaefd9b3217 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -98,6 +98,10 @@ static const struct xhci_plat_priv xhci_plat_marvell_armada = {
.init_quirk = xhci_mvebu_mbus_init_quirk,
};
+static const struct xhci_plat_priv xhci_plat_marvell_armada3700 = {
+ .init_quirk = xhci_mvebu_a3700_init_quirk,
+};
+
static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
.init_quirk = xhci_rcar_init_quirk,
@@ -123,6 +127,9 @@ static const struct of_device_id usb_xhci_of_match[] = {
}, {
.compatible = "marvell,armada-380-xhci",
.data = &xhci_plat_marvell_armada,
+ }, {
+ .compatible = "marvell,armada3700-xhci",
+ .data = &xhci_plat_marvell_armada3700,
}, {
.compatible = "renesas,xhci-r8a7790",
.data = &xhci_plat_renesas_rcar_gen2,
--
2.19.1
