RE: [PATCH v4 5/6] dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 combo SS phy
From: Pritam Manohar Sutar <hidden>
Date: 2025-07-09 10:00:57
Also in:
linux-arm-kernel, linux-phy, linux-samsung-soc, lkml
Hi Krzysztof,
-----Original Message----- From: Krzysztof Kozlowski <krzk@kernel.org> Sent: 06 July 2025 03:14 PM To: Pritam Manohar Sutar <redacted> Cc: vkoul@kernel.org; kishon@kernel.org; robh@kernel.org; krzk+dt@kernel.org; conor+dt@kernel.org; alim.akhtar@samsung.com; andre.draszik@linaro.org; peter.griffin@linaro.org; neil.armstrong@linaro.org; kauschluss@disroot.org; ivo.ivanov.ivanov1@gmail.com; m.szyprowski@samsung.com; s.nawrocki@samsung.com; linux- phy@lists.infradead.org; devicetree@vger.kernel.org; linux- kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-samsung- soc@vger.kernel.org; rosa.pila@samsung.com; dev.tailor@samsung.com; faraz.ata@samsung.com; muhammed.ali@samsung.com; selvarasu.g@samsung.com Subject: Re: [PATCH v4 5/6] dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 combo SS phy On Tue, Jul 01, 2025 at 05:37:05PM +0530, Pritam Manohar Sutar wrote:quoted
This phy supports USB3.1 SSP+(10Gbps) protocol and is backwardsAgian, this?quoted
compatible to the USB3.0 SS(5Gbps). 'Add-on USB2.0' phy is required to support USB2.0 HS(480Mbps), FS(12Mbps) and LS(1.5Mbps) data rates. These two phys are combined to form a combo phy. Add a dedicated compatible string for USB combo SS phy found in this SoC. The SoC requires two clocks, named "phy" and "ref" and various power supplies (regulators) for the internal circuitry to work. The required voltages are: * avdd075_usb - 0.75v * avdd18_usb20 - 1.8v * avdd33_usb20 - 3.3vOne more commitm message completely copy-pasted and completely uninforming. The voltages are irrelevant. Explain the architecture. This should be just one patch with proper full description.quoted
Add schema only for 'USB3.1 SSP+' SS phy in this commit.Why only? Add everything, describe everything, but not what voltages you have there but the architecture of the PHY.
Will combine patch 3 (combo HS phy) & 5(combo SS phy) to describe combo phy and even will add some details as mentioned in cover letter.
Best regards, Krzysztof