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Wed, 23 Jul 2025 12:45:10 +0000 (GMT) From: "Alim Akhtar" To: "'Krzysztof Kozlowski'" , "'Pritam Manohar Sutar'" , "'Krzysztof Kozlowski'" Cc: , , , , , , , , , , , , , , , , , , , , , In-Reply-To: <6e1c67d2-9bfa-442a-9d53-8c5970a2a9ef@kernel.org> Subject: RE: [PATCH v4 1/6] dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 HS phy compatible Date: Wed, 23 Jul 2025 18:15:08 +0530 Message-ID: <2a1901dbfbcf$a21b45e0$e651d1a0$@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Content-Language: en-us Thread-Index: AQJAgQZ9LFXBZrDskwNBYris6jFv1AKCX9A9Aa5wAf0Bi5UAqwCML2yKAWUlSf8CRPacEQIi1iyNAmb2xVkCD/Nw+wC0VRd5AgU5Triy3GiwIA== X-CMS-MailID: 20250723124513epcas5p40a7150ee82c674eb479589288323da54 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P cpgsPolicy: CPGSC10-542,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250701115955epcas5p320cfe73ca33522cd2f9f7970cfde1c63 References: <20250701120706.2219355-1-pritam.sutar@samsung.com> <20250701120706.2219355-2-pritam.sutar@samsung.com> <20250706-fresh-meaty-cougar-5af170@krzk-bin> <07d301dbf0ae$0658cbe0$130a63a0$@samsung.com> <9a2d0ad7-cb1f-473d-a91a-3a1b59b71280@kernel.org> <000c01dbf70b$ccdbf630$6693e290$@samsung.com> <00ff01dbfac1$ee528860$caf79920$@samsung.com> <9a97cc9e-2221-44d6-83e9-25b1bec10a6f@kernel.org> <000901dbfb90$42873060$c7959120$@samsung.com> <6e1c67d2-9bfa-442a-9d53-8c5970a2a9ef@kernel.org> > -----Original Message----- > From: Krzysztof Kozlowski > Sent: Wednesday, July 23, 2025 2:13 PM > To: Pritam Manohar Sutar ; 'Krzysztof > Kozlowski' > Cc: vkoul=40kernel.org; kishon=40kernel.org; robh=40kernel.org; =5Bsnip=5D > >>>>> Ok got it. Will change supplies name as below avdd075_usb =3D> > >>>>> avdd075-usb > >>>>> avdd18_usb20 =3D> avdd18-usb20 > >>>>> avdd33_usb20 =3D> avdd33-usb20 > >>>>> > >>>>> Confirm the above change that is meant in terms of DTS style. > >>>> Yes. I have doubts that actual supplies have suffix usb20. Are > >>>> there more than one avdd18 for this block? > >>>> > >>> > >>> Yes, there are more than one vdd18 supplies for this block. > >> > >> And their names are? > >> > >>> > >>> Re-analysed your comment on adding new supplies. > >>> Going to re-use existing supplies as mentioned below, rather than > >>> introducing new supplies > >>> > >>> dvdd-usb20-supply =3D> for 0.75v > >>> vddh-usb20-supply =3D> for 1.8v > >>> vdd33-usb20-supply =3D> for 3.3v > >> > >> > >> You just expect us to guess whether this is correct... > > > > Sorry about not being clear so far. > > > > V920 needs three supplies, 0.75v, 1.8v and 3.3v for USB PHY The naming > > convention used in the schematic are avdd075-usb, avdd18_usb20, > > avdd33_usb20. > > > > However, PHY's user manual just mentions DVDD, VDD33 and VDD18. >=20 >=20 > Then dvdd, vdd33 and vdd18. >=20 > > Since GS101 binding already using supply names similar to what is > mentioned in the PHY user manual. >=20 >=20 > GS101 has USB 2.0 and DP, thus the suffix made some sense. I think you ha= ve > only USB 2.0, that's why I question the suffix. >=20 I cross checked the schematic of v920 SADK, this is a combo PHY which suppo= rt USB-3.0 as well.=20 =40 Pritam Schema should capture all the supplies including USB-3.0, similar to GS101 = (which has USB2.0 and DP combo). So that would be as below: dvdd075-usb20-supply vdd18-usb20-supply vdd33-usb20-supply dvdd075-usb30-supply vdd18-usb30-supply please cross check the supply at your end and do the needful.=20 >=20 > Best regards, > Krzysztof