linux-kernel - Re: [PATCH] arm64: dts: imx8mn-var-som-symphony: fix USB OTG

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Message-ID: <CAOMZO5BNaQVMKbxU9rc5zOBwv9c+HayLnkjqrSgPKgMGzQ585A@mail.gmail.com>
Date:   Tue, 4 Jul 2023 18:02:53 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Hugo Villeneuve <hugo@...ovil.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Pierluigi Passaro <pierluigi.p@...iscite.com>,
        Nate Drude <nate.d@...iscite.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mn-var-som-symphony: fix USB OTG

Hi Hugo,

On Tue, Jul 4, 2023 at 5:41 PM Hugo Villeneuve <hugo@...ovil.com> wrote:

> Hi Fabio,
> with interrupts = <11 IRQ_TYPE_LEVEL_LOW>, USB OTG doesn't work.

PTN5150 datasheet says:

"Any changes in the attach/detach events or Rp current source changes
will trigger INTB pin to go LOW."

What about:  interrupts = <11 IRQ_TYPE_EDGE_FALLING>; ?

Also, please add a pullup to the GPIO1_11 pad.

Does it work?