Hi,
On Mon, Sep 11, 2023 at 07:08:26AM +0300, Tony Lindgren wrote:
> On mapphone devices we may get lots of noise on the micro-USB port in debug
> uart mode until the phy-cpcap-usb driver probes. Let's limit the noise by
> using overrun-throttle-ms.
>
> Note that there is also a related separate issue where the charger cable
> connected may cause random sysrq requests until phy-cpcap-usb probes that
> still remains.
>
> Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx>
> Cc: Carl Philipp Klemm <philipp@xxxxxxxx>
> Cc: Merlijn Wajer <merlijn@xxxxxxxxxx>
> Cc: Pavel Machek <pavel@xxxxxx>
> Cc: Sebastian Reichel <sre@xxxxxxxxxx>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> ---
A bit of a hack, but I guess it improves the status quo, so:
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
-- Sebastian
> arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi b/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
> --- a/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
> +++ b/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
> @@ -640,6 +640,7 @@ &uart1 {
> &uart3 {
> interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
> &omap4_pmx_core 0x17c>;
> + overrun-throttle-ms = <500>;
> };
>
> &uart4 {
> --
> 2.42.0
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