Messages in this thread Patch in this message | | | From | Amelie Delaunay <> | Subject | [PATCH 2/3] usb: dwc2: enable FS/LS PHY clock select on STM32MP15 FS OTG | Date | Mon, 23 Nov 2020 10:01:13 +0100 |
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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(+)
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) -- 2.17.1
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