| Message ID | 20201123090114.12641-3-amelie.delaunay@st.com |
|---|---|
| State | New |
| Headers | show |
| Series | STM32MP15 OTG params updates | expand |
On 11/23/2020 1:01 PM, Amelie Delaunay wrote: > When the core is in FS host mode, using the FS transceiver, and a Low-Speed > device is connected, transceiver clock is 6Mhz. > So, to support Low-Speed devices, enable support of FS/LS Low Power mode, > so that the PHY supplies a 6 MHz clock during Low-Speed mode. > > Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> > --- > drivers/usb/dwc2/params.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c > index 0df693319f0a..9e5dd7f3f2f6 100644 > --- a/drivers/usb/dwc2/params.c > +++ b/drivers/usb/dwc2/params.c > @@ -179,6 +179,8 @@ static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg) > p->activate_stm_id_vb_detection = true; > p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; > p->power_down = DWC2_POWER_DOWN_PARAM_NONE; > + p->host_support_fs_ls_low_power = true; > + p->host_ls_low_power_phy_clk = true; > } > > static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg) >
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 0df693319f0a..9e5dd7f3f2f6 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -179,6 +179,8 @@ static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg) p->activate_stm_id_vb_detection = true; p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; p->power_down = DWC2_POWER_DOWN_PARAM_NONE; + p->host_support_fs_ls_low_power = true; + p->host_ls_low_power_phy_clk = true; } static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg)
When the core is in FS host mode, using the FS transceiver, and a Low-Speed device is connected, transceiver clock is 6Mhz. So, to support Low-Speed devices, enable support of FS/LS Low Power mode, so that the PHY supplies a 6 MHz clock during Low-Speed mode. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> --- drivers/usb/dwc2/params.c | 2 ++ 1 file changed, 2 insertions(+)