linux-kernel - Re: [PATCH v2 4/4] usb: dwc2: host: add TPL support

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Message-ID: <e465c321-1d92-9f93-4e89-d9dde472d2e9@synopsys.com>
Date:   Wed, 22 Jun 2022 05:32:34 +0000
From:   Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
To:     Fabrice Gasnier <fabrice.gasnier@...s.st.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>
CC:     "stern@...land.harvard.edu" <stern@...land.harvard.edu>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "amelie.delaunay@...s.st.com" <amelie.delaunay@...s.st.com>
Subject: Re: [PATCH v2 4/4] usb: dwc2: host: add TPL support

On 6/21/2022 7:23 PM, Fabrice Gasnier wrote:
> From: Amelie Delaunay <amelie.delaunay@...s.st.com>
> 
> The Target Peripheral List (TPL) is used to identify targeted devices
> during Embedded Host compliance testing. The user can add "tpl-support"
> in the device tree to enable it.
> 
> Signed-off-by: Amelie Delaunay <amelie.delaunay@...s.st.com>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>

Acked-by: Minas Harutyunyan <hminas@...opsys.com>

> ---
> Changes in v2:
> - added dt-bindings precursor patch
> - update commit message to clarify TPL and EH meaning
> ---
>   drivers/usb/dwc2/hcd.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
> index f63a27d11fac8..4567f3c24d225 100644
> --- a/drivers/usb/dwc2/hcd.c
> +++ b/drivers/usb/dwc2/hcd.c
> @@ -52,6 +52,7 @@
>   
>   #include <linux/usb/hcd.h>
>   #include <linux/usb/ch11.h>
> +#include <linux/usb/of.h>
>   
>   #include "core.h"
>   #include "hcd.h"
> @@ -5339,6 +5340,8 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
>   	/* Don't support SG list at this point */
>   	hcd->self.sg_tablesize = 0;
>   
> +	hcd->tpl_support = of_usb_host_tpl_support(hsotg->dev->of_node);
> +
>   	if (!IS_ERR_OR_NULL(hsotg->uphy))
>   		otg_set_host(hsotg->uphy->otg, &hcd->self);
>