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Sat, 10 Jan 2026 00:32:59 +0100 (CET) Date: Sat, 10 Jan 2026 00:32:59 +0100 From: Sebastian Reichel To: Anand Moon Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Heikki Krogerus , Greg Kroah-Hartman , Nicolas Frattaroli , FUKAUMI Naoki , Cristian Ciocaltea , Yongbo Zhang , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "moderated list:ARM/Rockchip SoC support" , "open list:ARM/Rockchip SoC support" , open list , "open list:USB TYPEC CLASS" Subject: Re: [PATCH v1 2/3] arm64: dts: rockchip: rk3588-rock-5b-5bp-5t: Fix USB host phy-supply on Rock 5b-5bp-5t SbC Message-ID: References: <20260103083232.9510-1-linux.amoon@gmail.com> <20260103083232.9510-3-linux.amoon@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ji2p36iqphckh5dg" Content-Disposition: inline In-Reply-To: X-Zoho-Virus-Status: 1 X-Zoho-Virus-Status: 1 X-Zoho-AV-Stamp: zmail-av-1.5.1/267.941.65 X-ZohoMailClient: External --ji2p36iqphckh5dg Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Subject: Re: [PATCH v1 2/3] arm64: dts: rockchip: rk3588-rock-5b-5bp-5t: Fix USB host phy-supply on Rock 5b-5bp-5t SbC MIME-Version: 1.0 Hi, On Thu, Jan 08, 2026 at 12:25:12PM +0530, Anand Moon wrote: > Thanks for your review comments. > On Sat, 3 Jan 2026 at 19:35, Sebastian Reichel wrote: > > On Sat, Jan 03, 2026 at 02:01:18PM +0530, Anand Moon wrote: > > > The USB host USB2 and USB3 on the Rock 5B, 5BP, and 5T is powered by the > > > USB_HOST_PWREN_H gpio pin which is used to enable vcc5v0_host host > > > regulator which ensures proper power sequencing and management for onboard > > > Double-USB-HOST. > > > > > > Update the u2phy2_host node to reference the correct phy-supply. > > > > > > Cc: Sebastian Reichel > > > Signed-off-by: Anand Moon > > > --- > > > > u2phy2_host is connected to an onboard USB hub chip, which is > > powered by &vcc5v0_sys as the comment says. > > > > You can see this on page 9 of the v1.45 ROCK 5B schematics (page > > name USB2HUB). The usb hub chip uses VCC5V0_SYS + VCC_3V3_S0 and is > > connected to USB20_HOST0_DP, USB20_HOST0_DM. The related USB > > controller for that in the upstream DT is &usb_host0_ehci, which > > in turn is using &u2phy2_host. Thus at least for the ROCK 5B the > > existing DT is correct. Properly describing the downstream port > > VBUS regulator would require something like the following series: > > > > https://lore.kernel.org/all/20250911-v6-16-topic-usb-onboard-dev-v4-0-1af288125d74@pengutronix.de/ > > > Actually, the Radxa Rock 5 B doesn't have an onboard USB hub chip. Seriously? I provided the exact page for the hub chip in the schematics and it's easily visisble in lsusb too. I don't want to waste my time and expect a certain level of quality and this is certainly way below it... -- Sebastian --ji2p36iqphckh5dg Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE72YNB0Y/i3JqeVQT2O7X88g7+poFAmlhkCcACgkQ2O7X88g7 +prHvA/+M7sp9VJH7UdtTiVJGGZ9l3hhpP5O7HgHICqTrIgVNtvjPmkc57SavFen l9ivYV9dv0MwfPe5/nUhiAOeQAXcCTdzHWXSeu8GbSCahVG7OMkmKCLkXmaWXXMJ BUpPSZJpshXjjb5ETgq/tOLb68UBwJNrqYf8uf5xHvjJNUqI4EVwViRcYKboB8V+ tgoeX+7QO5YD3BcrVA42PQ7lc2gAgPNcP4+aBYvZKxq/n+WDLKlqbPkv2rPGr5TQ oQB9p6roVUCoVWZa0mC/qv72C4S0m8Q14GGK0rIePuZk4vVaoI/d3P8nsJWKWqiL NMp3acca67TnSea2BBPb6cUJsod+IvPRqFhey2LXPQWFuYESAWlDBIvWeDgyQ9JY jHXmPAuj6L2lxcJ/NdnRZzpMKWL1G30+Y4XmMG/9Xooey8IM1ev0DAWx+DNfBh/M zbAjVeyEGeOhOUC4oLXujgYaUDgtaSZIZwU/ycaH6iQ+QBbozjZT/DNoxPHsIgLA W49ARX9JRaKhGf9+fwlgbDWyZrtgTMBKirSGRG3SkVk+z2zPTpmp1jXnqTLQ5+62 gZTYos9FOMtJDMmTuZ9ZiUU55b0x8S7zSl9TZX+wSkr/bq4inQt19uD/RwgCRdoB uKk4Wd0dcwFXgNnuzC3NmYXpFLFXBkYx8ROPVUstgM6SZk2e+g0= =iHOy -----END PGP SIGNATURE----- --ji2p36iqphckh5dg--