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Message-Id: <20230704172801.f11422b3f947c625f53af871@hugovil.com>
Date: Tue, 4 Jul 2023 17:28:01 -0400
From: Hugo Villeneuve <hugo@...ovil.com>
To: Fabio Estevam <festevam@...il.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
On Tue, 4 Jul 2023 18:02:53 -0300
Fabio Estevam <festevam@...il.com> wrote:
> 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."
Hi Fabio,
it is important to remember that on this board, like I explained
before, the INTB pin is not connected to anything.
It is only the ID pin (9) that is connected to the GPIO1_11 pin.
> What about: interrupts = <11 IRQ_TYPE_EDGE_FALLING>; ?
With this setting, USB OTG works:
$ dmesg | grep 5150
[ 4.833529] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 4.839972] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 4.874173] ptn5150 1-003d: DEBUG_IRQ: error in usb_role_switch_get()
[ 4.896822] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 4.902905] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 4.911190] ptn5150 1-003d: DEBUG_IRQ: error in usb_role_switch_get()
[ 4.918462] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 4.926197] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 4.935210] ptn5150 1-003d: DEBUG_IRQ: error in usb_role_switch_get()
[ 4.947673] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 4.953771] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 4.961104] ptn5150 1-003d: DEBUG_IRQ: error in usb_role_switch_get()
[ 5.052165] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 5.058234] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 5.064632] ptn5150 1-003d: DEBUG_IRQ: error in usb_role_switch_get()
[ 5.096452] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 5.102578] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 5.114959] ptn5150 1-003d: DEBUG_IRQ: error in usb_role_switch_get()
[ 5.187060] ptn5150 1-003d: No VBUS GPIO, ignoring VBUS control
[ 5.193243] ptn5150 1-003d: DEBUG_IRQ: i2c->irq: 42
[ 5.206235] ptn5150 1-003d: DEBUG_IRQ: probe done
> Also, please add a pullup to the GPIO1_11 pad.
There is already an external 10K pull-up resistor (R88) to +3.3V
on GPIO1_11 pin...
Hugo.
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