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From: Johan Hovold <johan@kernel.org>
To: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Cc: Krishna Kurapati PSSNV <quic_kriskura@quicinc.com>,
	Bjorn Andersson <andersson@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Andy Gross <agross@kernel.org>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Felipe Balbi <balbi@kernel.org>,
	Wesley Cheng <quic_wcheng@quicinc.com>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"quic_pkondeti@quicinc.com" <quic_pkondeti@quicinc.com>,
	"quic_ppratap@quicinc.com" <quic_ppratap@quicinc.com>,
	"quic_jackp@quicinc.com" <quic_jackp@quicinc.com>,
	"quic_harshq@quicinc.com" <quic_harshq@quicinc.com>,
	"ahalaney@redhat.com" <ahalaney@redhat.com>,
	"quic_shazhuss@quicinc.com" <quic_shazhuss@quicinc.com>
Subject: Re: [PATCH v9 05/10] usb: dwc3: core: Refactor PHY logic to support Multiport Controller
Date: Thu, 19 Oct 2023 15:20:24 +0200	[thread overview]
Message-ID: <ZTEtGIerwI90P6aA@hovoldconsulting.com> (raw)
In-Reply-To: <20230801013031.ft3zpoatiyfegmh6@synopsys.com>

[ Digging through some old mails. ]

On Tue, Aug 01, 2023 at 01:30:36AM +0000, Thinh Nguyen wrote:
> On Fri, Jul 21, 2023, Johan Hovold wrote:
> > On Mon, Jul 03, 2023 at 12:26:26AM +0530, Krishna Kurapati PSSNV wrote:
  
> > > >> +/* Number of ports supported by a multiport controller */
> > > >> +#define DWC3_MAX_PORTS 4
> > > > 
> > > > You did not answer my question about whether this was an arbitrary
> > > > implementation limit (i.e. just reflecting the only currently supported
> > > > multiport controller)?
> > > > 
> > > I mentioned in commit text that it is limited to 4. Are you referring to 
> > > state the reason why I chose the value 4 ?
> > 
> > Yes, and to clarify whether this was an arbitrary limit you chose
> > because it was all that was needed for the hw you care about, or if it's
> > a more general limitation.
> > 
> 
> Note: We can support many, but we set the current limit to 4 usb3 ports
> and up to 15 usb2 ports.

Thanks for clarifying.

Johan

  reply	other threads:[~2023-10-19 13:20 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-21  4:36 [PATCH v9 00/10] Add multiport support for DWC3 controllers Krishna Kurapati
2023-06-21  4:36 ` [PATCH v9 01/10] dt-bindings: usb: qcom,dwc3: Add bindings for SC8280 Multiport Krishna Kurapati
2023-06-23 20:41   ` Rob Herring
2023-06-27 11:20   ` Johan Hovold
2023-06-27 15:38     ` Johan Hovold
2023-07-02 19:11       ` Krishna Kurapati PSSNV
2023-07-21  8:10         ` Johan Hovold
2023-06-21  4:36 ` [PATCH v9 02/10] dt-bindings: usb: Add bindings for multiport properties on DWC3 controller Krishna Kurapati
2023-06-23 20:41   ` Rob Herring
2023-06-27 11:24   ` Johan Hovold
2023-06-21  4:36 ` [PATCH v9 03/10] usb: dwc3: core: Access XHCI address space temporarily to read port info Krishna Kurapati
2023-06-23 22:14   ` Thinh Nguyen
2023-06-27 11:45   ` Johan Hovold
2023-07-02 18:48     ` Krishna Kurapati PSSNV
2023-07-21  7:44       ` Johan Hovold
2023-07-23 14:59     ` Krishna Kurapati PSSNV
2023-07-24 15:41       ` Johan Hovold
2023-07-25  5:39         ` Krishna Kurapati PSSNV
2023-06-21  4:36 ` [PATCH v9 04/10] usb: dwc3: core: Skip setting event buffers for host only controllers Krishna Kurapati
2023-06-23 22:27   ` Thinh Nguyen
2023-06-24  7:20     ` Krishna Kurapati PSSNV
2023-06-26 23:34       ` Thinh Nguyen
2023-06-26 23:46         ` Thinh Nguyen
2023-07-02 18:45           ` Krishna Kurapati PSSNV
2023-07-05 22:40             ` Thinh Nguyen
2023-06-21  4:36 ` [PATCH v9 05/10] usb: dwc3: core: Refactor PHY logic to support Multiport Controller Krishna Kurapati
2023-06-23 22:55   ` Thinh Nguyen
2023-06-24  7:15     ` Krishna Kurapati PSSNV
2023-06-27 12:09   ` Johan Hovold
2023-07-02 18:56     ` Krishna Kurapati PSSNV
2023-07-21  7:56       ` Johan Hovold
2023-08-01  1:30         ` Thinh Nguyen
2023-10-19 13:20           ` Johan Hovold [this message]
2023-06-27 19:37   ` kernel test robot
2023-06-21  4:36 ` [PATCH v9 06/10] usb: dwc3: qcom: Add support to read IRQ's related to multiport Krishna Kurapati
2023-06-21 10:05   ` Konrad Dybcio
2023-06-21 10:08     ` Krishna Kurapati PSSNV
2023-06-27 14:31   ` Johan Hovold
2023-07-02 18:59     ` Krishna Kurapati PSSNV
2023-07-11  6:42       ` Krishna Kurapati PSSNV
2023-07-21  8:14       ` Johan Hovold
2023-07-21  8:19         ` Krishna Kurapati PSSNV
2023-07-21  9:21           ` Johan Hovold
2023-07-21  9:35             ` Krishna Kurapati PSSNV
2023-07-21 11:11               ` Johan Hovold
2023-07-12 12:12   ` Johan Hovold
2023-07-12 18:26     ` Krishna Kurapati PSSNV
2023-07-14  9:05       ` Johan Hovold
2023-07-14 10:40         ` Krishna Kurapati PSSNV
2023-07-15 19:01           ` Krishna Kurapati PSSNV
2023-07-17 15:15             ` Krishna Kurapati PSSNV
2023-07-21  8:35             ` Johan Hovold
2023-07-21  8:45               ` Krishna Kurapati PSSNV
2023-06-21  4:36 ` [PATCH v9 07/10] usb: dwc3: qcom: Add multiport suspend/resume support for wrapper Krishna Kurapati
2023-06-27 15:05   ` Johan Hovold
2023-07-02 19:02     ` Krishna Kurapati PSSNV
2023-06-21  4:36 ` [PATCH v9 08/10] arm64: dts: qcom: sc8280xp: Add multiport controller node for SC8280 Krishna Kurapati
2023-06-23 22:39   ` Konrad Dybcio
2023-06-24  7:13     ` Krishna Kurapati PSSNV
2023-06-27 15:16       ` Johan Hovold
2023-07-02 19:10         ` Krishna Kurapati PSSNV
2023-07-21  8:08           ` Johan Hovold
2023-06-27 15:11     ` Johan Hovold
2023-06-21  4:36 ` [PATCH v9 09/10] arm64: dts: qcom: sa8295p: Enable tertiary controller and its 4 USB ports Krishna Kurapati
2023-06-23 22:40   ` Konrad Dybcio
2023-06-21  4:36 ` [PATCH v9 10/10] arm64: dts: qcom: sa8540-ride: Enable first port of tertiary usb controller Krishna Kurapati
2023-06-23 22:42   ` Konrad Dybcio
2023-06-24  7:11     ` Krishna Kurapati PSSNV
2023-06-27 15:19 ` [PATCH v9 00/10] Add multiport support for DWC3 controllers Johan Hovold

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