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| author | Hans Christian Lonstad <hcl@datarespons.com> | 2022-08-22 08:34:18 +0200 |
|---|---|---|
| committer | Hans Christian Lonstad <hcl@datarespons.com> | 2022-09-17 12:51:26 +0200 |
| commit | 12e728f17a99e371b6c3d86d21bfa48f90ad70f5 (patch) | |
| tree | 5fc584e46d24f4262431a2d5a45daa030a38bf4b | |
| parent | 14a36bcaec727fce6c27f5117095e316cbcbfa6c (diff) | |
| download | barebox-12e728f17a99e371b6c3d86d21bfa48f90ad70f5.tar.gz barebox-12e728f17a99e371b6c3d86d21bfa48f90ad70f5.tar.xz | |
usb: dwc3: support snps,dis-u2-freeclk-exists-quirk for i.MX8MP
The driver currently configures the Synopsis USB 3.0/2.0 PHY to
unconditionally provide a free-running PHY clock. This must
be disabled on the i.MX8MP as well as RK3328 and RK3399 SoC,
because the clock control input is inactive.
The upstream Linux binding specifies a boolean DT property
snps,dis-u2-freeclk-exists-quirk to disable the free-running
PHY clock and the property is already used in the i.MX8MP
DT, that barebox imports from upstream. Thus implement the
binding for barebox. This fixes barebox USB host support on the
i.MX8MP, which previously triggered a BUG() when enumerating[1].
Link: https://github.com/saschahauer/barebox/issues/13 [1]
Fixes: e213627bbe1d ("usb: dwc3: of-simple: add i.MX8MP compatible")
Signed-off-by: Hans Christian Lønstad <hcl@datarespons.no>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
| -rw-r--r-- | drivers/usb/dwc3/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 30aaef90ac..7be3b18df9 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1001,6 +1001,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->dr_mode = of_usb_get_dr_mode(dev->device_node, NULL); dwc->hsphy_mode = of_usb_get_phy_mode(dev->device_node, NULL); + dwc->dis_u2_freeclk_exists_quirk = of_property_read_bool(dev->device_node, + "snps,dis-u2-freeclk-exists-quirk"); dwc->lpm_nyet_threshold = lpm_nyet_threshold; dwc->tx_de_emphasis = tx_de_emphasis; |