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Macpaul Lin 666e6f39fa
arm64: dts: mediatek: mt8395-genio-1200-evk: add u3port1 for xhci1
This patch fixes an issue where xhci1 was not functioning properly because
the state and PHY settings were incorrect.

The introduction of the 'force-mode' property in the phy-mtk-tphy driver
allows for the correct initialization of xhci1 by updating the Device Tree
settings accordingly.

The necessary fixup which added support for the 'force-mode' switch in the
phy-mtk-tphy driver.
commit 9b27303003 ("phy: mediatek: tphy: add support force phy mode switch")
Link: https://lore.kernel.org/r/20231211025624.28991-2-chunfeng.yun@mediatek.com

Prior to this fix, the system would exhibit the following probe failure messages
for xhci1:
  xhci-mtk 11290000.usb: supply vbus not found, using dummy regulator
  xhci-mtk 11290000.usb: uwk - reg:0x400, version:104
  xhci-mtk 11290000.usb: xHCI Host Controller
  xhci-mtk 11290000.usb: new USB bus registered, assigned bus number 5
  xhci-mtk 11290000.usb: clocks are not stable (0x1003d0f)
  xhci-mtk 11290000.usb: can't setup: -110
  xhci-mtk 11290000.usb: USB bus 5 deregistered
  xhci-mtk: probe of 11290000.usb failed with error -110

With the application of this dts fixup, the aforementioned initialization errors
are resolved and xhci1 is working.

Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Link: https://lore.kernel.org/r/20240216095751.4937-1-macpaul.lin@mediatek.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
History 2024-06-27 10:10:22 +02:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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There are various text files in the Documentation/ subdirectory,
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Please read the Documentation/process/changes.rst file, as it contains the
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