diff options
| author | Andrejs Cainikovs <andrejs.cainikovs@toradex.com> | 2024-02-08 12:33:04 +0100 |
|---|---|---|
| committer | Andrejs Cainikovs <andrejs.cainikovs@toradex.com> | 2024-02-09 14:37:44 +0100 |
| commit | 0900663521b6d9723b086980519e0620d148bd1e (patch) | |
| tree | b831c10f609494eacd4b217f52d655f1ab2bc89d /arch/arm64/boot/dts/ti/k3-am62-main.dtsi | |
| parent | 440f0e729cc3a61e955a30b8584c755c6ead5a76 (diff) | |
arm64: dts: ti: k3-am62-main: disable usb lpm
AM62 USB works with some devices, while failing to operate with others.
[ 560.189822] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
[ 560.195631] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 2
[ 574.388509] xhci-hcd xhci-hcd.4.auto: can't setup: -110
[ 574.393814] xhci-hcd xhci-hcd.4.auto: USB bus 2 deregistered
[ 574.399544] xhci-hcd: probe of xhci-hcd.4.auto failed with error -110
This seems to be related to LPM (Link Power Management), and disabling it
turns USB into reliable working state.
As per AM62 reference manual:
> 4.8.2.1 USB2SS Unsupported Features
>
> The following features are not supported on this family of devices:
> ...
> - USB 2.0 ECN: Link Power Management (LPM)
> ...
Upstream-Status: Submitted [https://lore.kernel.org/all/20240209130213.38908-1-andrejs.cainikovs@gmail.com/]
Fixes: 2240f96cf3cd ("arm64: dts: ti: k3-am62-main: Add support for USB")
Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>
Diffstat (limited to 'arch/arm64/boot/dts/ti/k3-am62-main.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi index a9ccf7bb2ecc..b02b5e39a2c7 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi @@ -636,6 +636,8 @@ interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; @@ -659,6 +661,8 @@ interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; |