From: Matthias Kaehlcke <mka@chromium.org>
To: Benjamin Bara <bbara93@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Benjamin Bara <benjamin.bara@skidata.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH v2 2/3] usb: misc: onboard-hub: add support for Cypress HX3 USB 3.0 family
Date: Wed, 21 Jun 2023 15:01:18 +0000 [thread overview]
Message-ID: <ZJMQvpOYp1zagtE2@google.com> (raw)
In-Reply-To: <20230620-hx3-v2-2-76a53434c713@skidata.com>
On Wed, Jun 21, 2023 at 04:26:28PM +0200, Benjamin Bara wrote:
> From: Benjamin Bara <benjamin.bara@skidata.com>
>
> The HX3 comes in different variants (up to 4 USB 3.0 ports; multi-TT),
> e.g. CYUSB330x/CYUSB331x/CYUSB332x/CYUSB230x. It operates with two
> different power supplies: 1V2 and 3V3.
>
> Add the support for this hub, for controlling the reset pin and the
> power supplies.
>
> Reset time is extracted from data sheet, page 24:
> "The RESETN pin can be tied to VDD_IO through an external resistor and
> to ground (GND) through an external capacitor (minimum 5 ms time
> constant)."
> V_IH min is given at 0.7 * 3V3 (page 34), therefore use 10ms.
>
> Also add USB PIDs for the USB 2.0 and USB 3.0 root hub.
>
> Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
Acked-by: Matthias Kaehlcke <mka@chromium.org>
next prev parent reply other threads:[~2023-06-21 15:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-21 14:26 [PATCH v2 0/3] usb: misc: onboard_usb_hub: add support for Cypress HX3 USB 3.0 family Benjamin Bara
2023-06-21 14:26 ` [PATCH v2 1/3] usb: misc: onboard-hub: support multiple power supplies Benjamin Bara
2023-06-21 14:57 ` Matthias Kaehlcke
2023-06-21 15:45 ` Benjamin Bara
2023-06-21 15:52 ` Matthias Kaehlcke
2023-06-22 5:16 ` Alexander Stein
2023-06-22 5:31 ` Benjamin Bara
2023-06-21 14:26 ` [PATCH v2 2/3] usb: misc: onboard-hub: add support for Cypress HX3 USB 3.0 family Benjamin Bara
2023-06-21 15:01 ` Matthias Kaehlcke [this message]
2023-06-21 14:26 ` [PATCH v2 3/3] dt-bindings: usb: Add binding " Benjamin Bara
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