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usb: dwc2: don't use ID/Vbus detection if usb-role-switch on STM32MP15 SoCs

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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>
This commit is contained in:
Amelie Delaunay 2020-06-16 16:07:16 +02:00 committed by Felipe Balbi
parent bc0f0d4a58
commit 916f8b6272
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/dwc2/params.c
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@ -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;