From: k.kozlowski@samsung•com (Krzysztof Kozlowski)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC v2 13/13] ARM: dts: exynos: Fix LAN and HUB after bootloader initialization on Odroid U3
Date: Fri, 06 May 2016 08:28:48 +0200 [thread overview]
Message-ID: <572C39A0.8030701@samsung.com> (raw)
In-Reply-To: <9dff13ae-5863-2b45-0e6a-00b345a19019@osg.samsung.com>
On 05/05/2016 10:16 PM, Javier Martinez Canillas wrote:
> Hello Krzysztof,
>
> On 05/05/2016 08:34 AM, Krzysztof Kozlowski wrote:
>> On Odroid U3 (Exynos4412-based) board if USB was initialized by
>> bootloader (in U-Boot "usb start" before tftpboot), the HUB (usb3503)
>> and LAN (smsc95xx) after after successful probing were not visible in the
>> system ("lsusb").
>>
>> In such case the devices had to be fully reset before configuring.
>> Reset by GPIO (called RESET_N pin) and by RESET field in STCD register
>> in usb3503 HUB are not sufficient. Instead full reset has to be done by
>> disabling and enabling regulator.
>>
>> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung•com>
>> ---
>
> [snip]
>
>>
>> + lan_pwrseq: pwrseq2 {
>> + compatible = "mmc-pwrseq-simple";
>
> It feels strange to have a "mmc-pwrseq-simple" compatible for a USB power
> sequence provider. As I mentioned in the other patch, I think there should
> either be a DT binding for the USB pwrseq-simple with a "usb-pwrseq-simple"
> compatible that binds to the same pwrseq-simple driver or maybe having a
> generic DT binding for any device with a new "pwrseq-simple" compatible.
>
> Patch looks good to me though, so after having a DT binding and changing
> the compatible string:
>
> Reviewed-by: Javier Martinez Canillas <javier@osg•samsung.com>
Probably this will change after Rob's feedback. :)
Best regards,
Krzysztof
next prev parent reply other threads:[~2016-05-06 6:28 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-05 12:34 [RFC v2 00/13] usb/mmc/power: Fix USB/LAN when TFTP booting Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 01/13] usb: misc: usb3503: Clean up on driver unbind Krzysztof Kozlowski
2016-05-05 18:32 ` Javier Martinez Canillas
2016-05-06 6:13 ` Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 02/13] power/mmc: Move pwrseq drivers to power/pwrseq Krzysztof Kozlowski
2016-05-05 18:44 ` Javier Martinez Canillas
2016-05-06 6:15 ` Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 03/13] MAINTAINERS: Retain Ulf Hansson as the same maintainer of pwrseq Krzysztof Kozlowski
2016-05-05 18:46 ` Javier Martinez Canillas
2016-05-05 12:34 ` [RFC v2 04/13] power: pwrseq: Enable COMPILE_TEST for drivers Krzysztof Kozlowski
2016-05-05 18:57 ` Javier Martinez Canillas
2016-05-05 12:34 ` [RFC v2 05/13] power: pwrseq: Remove mmc prefix from mmc_pwrseq Krzysztof Kozlowski
2016-05-05 19:09 ` Javier Martinez Canillas
2016-05-06 6:20 ` Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 06/13] power: pwrseq: Generalize mmc_pwrseq operations by removing mmc prefix Krzysztof Kozlowski
2016-05-05 19:14 ` Javier Martinez Canillas
2016-05-05 12:34 ` [RFC v2 07/13] power: pwrseq: simple: Add support for toggling regulator Krzysztof Kozlowski
2016-05-05 19:31 ` Javier Martinez Canillas
2016-05-06 6:24 ` Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 08/13] usb: hub: Handle deferred probe Krzysztof Kozlowski
2016-05-05 19:33 ` Javier Martinez Canillas
2016-05-05 12:34 ` [RFC v2 09/13] power: pwrseq: Add support for USB hubs with external power Krzysztof Kozlowski
2016-05-05 19:52 ` Javier Martinez Canillas
2016-05-06 6:26 ` Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 10/13] usb: hub: Power sequence the ports on activation Krzysztof Kozlowski
2016-05-05 14:09 ` Alan Stern
2016-05-05 17:37 ` Krzysztof Kozlowski
2016-05-05 19:56 ` Javier Martinez Canillas
2016-05-05 12:34 ` [RFC v2 11/13] usb: port: Parse pwrseq phandle from Device Tree Krzysztof Kozlowski
2016-05-05 20:10 ` Javier Martinez Canillas
2016-05-06 6:27 ` Krzysztof Kozlowski
2016-05-05 12:34 ` [RFC v2 12/13] ARM: dts: exynos: Switch the buck8 to GPIO mode on Odroid U3 Krzysztof Kozlowski
2016-05-05 20:11 ` Javier Martinez Canillas
2016-05-05 12:34 ` [RFC v2 13/13] ARM: dts: exynos: Fix LAN and HUB after bootloader initialization " Krzysztof Kozlowski
2016-05-05 20:16 ` Javier Martinez Canillas
2016-05-06 6:28 ` Krzysztof Kozlowski [this message]
2016-05-05 22:42 ` [RFC v2 00/13] usb/mmc/power: Fix USB/LAN when TFTP booting Rob Herring
2016-05-06 5:44 ` Peter Chen
2016-05-06 6:12 ` Krzysztof Kozlowski
2016-05-06 7:15 ` Peter Chen
2016-05-06 6:10 ` Krzysztof Kozlowski
2016-05-06 13:01 ` Rob Herring
2016-05-09 7:46 ` Ulf Hansson
2016-05-09 18:18 ` Rob Herring
2016-05-10 11:02 ` Ulf Hansson
2016-05-28 3:36 ` Peter Chen
2016-05-31 0:58 ` Peter Chen
2016-05-31 11:54 ` Krzysztof Kozlowski
2016-12-13 12:20 ` Hans Verkuil
2016-12-13 12:34 ` Hans Verkuil
2016-12-13 13:53 ` Krzysztof Kozlowski
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