summaryrefslogtreecommitdiffstats
path: root/drivers/usb/dwc2/params.c
diff options
context:
space:
mode:
authorAmelie Delaunay <amelie.delaunay@st.com>2020-06-16 16:07:16 +0200
committerFelipe Balbi <balbi@kernel.org>2020-07-23 14:45:36 +0300
commit916f8b627288039d9e771a9b2ab1b3c79b303039 (patch)
tree52b638aca8b8a3cbc6f52e8b49240705cf94d541 /drivers/usb/dwc2/params.c
parentbc0f0d4a5853e32ba97a0318f774570428fc5634 (diff)
downloadlinux-stable-916f8b627288039d9e771a9b2ab1b3c79b303039.tar.gz
linux-stable-916f8b627288039d9e771a9b2ab1b3c79b303039.tar.bz2
linux-stable-916f8b627288039d9e771a9b2ab1b3c79b303039.zip
usb: dwc2: don't use ID/Vbus detection if usb-role-switch on STM32MP15 SoCs
If usb-role-switch is present in the device tree, it means that ID and Vbus signals are not connected to the OTG controller but to an external component (GPIOs, Type-C controller). In this configuration, usb role switch is used to force valid sessions on STM32MP15 SoCs. Acked-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/dwc2/params.c')
-rw-r--r--drivers/usb/dwc2/params.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 8f9d061c4d5f..bd792c9cdef9 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -183,9 +183,11 @@ static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg)
static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg)
{
struct dwc2_core_params *p = &hsotg->params;
+ struct device_node *np = hsotg->dev->of_node;
p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
- p->activate_stm_id_vb_detection = true;
+ p->activate_stm_id_vb_detection =
+ !of_property_read_bool(np, "usb-role-switch");
p->host_rx_fifo_size = 440;
p->host_nperio_tx_fifo_size = 256;
p->host_perio_tx_fifo_size = 256;