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Tue, 17 Jun 2025 17:49:34 +0000 (GMT) From: "Pritam Manohar Sutar" To: "'Krzysztof Kozlowski'" Cc: , , , , , , , , , , , , , , , , , , , , , In-Reply-To: <20250616-remarkable-zealous-orangutan-7ace78@kuoka> Subject: RE: [PATCH v3 3/9] arm64: dts: exynos: ExynosAutov920: add USB and USB-phy nodes Date: Tue, 17 Jun 2025 23:19:33 +0530 Message-ID: <000301dbdfb0$3168ee00$943aca00$@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQNTkACKxnsdZBPuyPiYuNftoBZF1gGoxAPYAeRpXwgBWhb/9LDxAqUA Content-Language: en-in X-CMS-MailID: 20250617174937epcas5p202e625e46a92fba4f4ab08fdbf1063ae X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P cpgsPolicy: CPGSC10-542,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250613055047epcas5p220b1cd1e9b2819997a3d4747c395d13d References: <20250613055613.866909-1-pritam.sutar@samsung.com> <20250613055613.866909-4-pritam.sutar@samsung.com> <20250616-remarkable-zealous-orangutan-7ace78@kuoka> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250617_181749_720795_708E66E7 X-CRM114-Status: GOOD ( 17.75 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Krzysztof, > -----Original Message----- > From: Krzysztof Kozlowski > Sent: 16 June 2025 01:43 PM > To: Pritam Manohar Sutar > Cc: vkoul=40kernel.org; kishon=40kernel.org; robh=40kernel.org; > krzk+dt=40kernel.org; conor+dt=40kernel.org; alim.akhtar=40samsung.com; > andre.draszik=40linaro.org; peter.griffin=40linaro.org; kauschluss=40disr= oot.org; > ivo.ivanov.ivanov1=40gmail.com; m.szyprowski=40samsung.com; > s.nawrocki=40samsung.com; linux-phy=40lists.infradead.org; > devicetree=40vger.kernel.org; linux-kernel=40vger.kernel.org; linux-arm- > kernel=40lists.infradead.org; linux-samsung-soc=40vger.kernel.org; > rosa.pila=40samsung.com; dev.tailor=40samsung.com; > faraz.ata=40samsung.com; muhammed.ali=40samsung.com; > selvarasu.g=40samsung.com > Subject: Re: =5BPATCH v3 3/9=5D arm64: dts: exynos: ExynosAutov920: add U= SB > and USB-phy nodes >=20 > On Fri, Jun 13, 2025 at 11:26:07AM GMT, Pritam Manohar Sutar wrote: > > Add USB controller and USB PHY controller nodes for this SoC. > > > > The USB controller has following features: > > * Dual Role Device (DRD) controller > > * DWC3 compatible > > * Supports USB 3.0 host and USB 3.0 device interfaces but phy > > controller capability is limited to USB 2.0. > > * Supports full-speed (12 Mbps) and high-speed (480 Mbps) modes with > > USB device 2.0 interface > > * Supports on-chip USB PHY transceiver > > * Supports up to 16 bi-directional endpoints (that includes control > > endpoint 0) > > * Complies with xHCI 1.1 specification > > > > Signed-off-by: Pritam Manohar Sutar > > --- > > .../boot/dts/exynos/exynosautov920-sadk.dts =7C 37 ++++++ > > .../arm64/boot/dts/exynos/exynosautov920.dtsi =7C 108 > > ++++++++++++++++++ > > 2 files changed, 145 insertions(+) >=20 > DTS cannot be a dependency for driver changes. Organize your patchset > correctly or fix the dependency. >=20 ExynosAutov920 has three types of the phy controllers (please check block d= iagram mentioned in cover-letter https://lore.kernel.org/linux-phy/20250613= 055613.866909-1-pritam.sutar=40samsung.com/) 1. HS phy (synopsys phy version v303), similar as existing exynos850. 2. SS phy in combo that that suppors only SS+, SS 3. HS phy (synopsys phy version v400) in 'Add-on' HS phy in combo phy (with= 2nd phy). Different from 1st phy in case of reg offsets and bits. This implementation follows below sequence to post patches for above phys 1. schema=20 2. driver changes 3. DTS changes=20 Please elaborate your comment. Do you want these DTS related patches in sep= arate patch-set series (not with this patch-set)? > Best regards, > Krzysztof Thank you. Regards, Pritam