[PATCH v6 3/3] usb: dwc2: don't use ID/Vbus detection if usb-role-switch on STM32MP15 SoCs
From: Amelie Delaunay <hidden>
Date: 2020-09-09 09:35:56
Also in:
linux-devicetree, linux-usb, lkml
Subsystem:
designware usb2 drd ip driver, the rest, usb subsystem · Maintainers:
Minas Harutyunyan, Linus Torvalds, Greg Kroah-Hartman
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: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Amelie Delaunay <redacted> --- drivers/usb/dwc2/params.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index a3611cdd1dea..50df72f32b4c 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c@@ -185,7 +185,7 @@ static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg) struct dwc2_core_params *p = &hsotg->params; p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; - p->activate_stm_id_vb_detection = true; + p->activate_stm_id_vb_detection = !device_property_read_bool(hsotg->dev, "usb-role-switch"); p->host_rx_fifo_size = 440; p->host_nperio_tx_fifo_size = 256; p->host_perio_tx_fifo_size = 256;
--
2.17.1
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