linux-kernel - Re: [PATCH v7 0/5] Introduce SpacemiT K1 PCIe phy support

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Message-ID: <20251219121901-GYB1958363@gentoo.org>
Date: Fri, 19 Dec 2025 20:19:01 +0800
From: Yixun Lan <dlan@...too.org>
To: Alex Elder <elder@...cstar.com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	vkoul@...nel.org, kishon@...nel.org, ziyao@...root.org,
	aurelien@...el32.net, johannes@...felt.com, pjw@...nel.org,
	palmer@...belt.com, aou@...s.berkeley.edu, alex@...ti.fr,
	p.zabel@...gutronix.de, guodong@...cstar.com,
	devicetree@...r.kernel.org, linux-phy@...ts.infradead.org,
	spacemit@...ts.linux.dev, linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 0/5] Introduce SpacemiT K1 PCIe phy support

Hi Vinod,
 Could you take a look of this series? I suppose patch 1-3 should go via
the generic phy tree, for patch 3, it's already got Neil's R-y [1] which
Alex should collect the tag..
 the Changelog for previous versions are also dropped.. which is bad

Link: https://lore.kernel.org/all/ba532f8d-a452-40e5-af46-b58b89f70a92@linaro.org/ [1]

On 09:12 Thu 18 Dec     , Alex Elder wrote:
> This series introduces a PHY driver to support PCIe on the SpacemiT K1
> SoC.  The PCIe controller implementation is derived from a Synopsys
> DesignWare PCIe IP.  The PHY driver supports one combination PCIe/USB
> PHY as well as two PCIe-only PHYs.  The combo PHY port uses one PCIe
> lane, and the other two ports each have two lanes.  All PCIe ports
> operate at 5 GT/second.
> 
> The PCIe PHYs must be configured using a value that can only be
> determined using the combo PHY, operating in PCIe mode.  To allow
> that PHY to be used for USB, the needed calibration step is performed
> by the PHY driver automatically at probe time.  Once this step is done,
> the PHY can be used for either PCIe or USB.
> 
> The PCIe controller driver that was included in earlier versions of
> this series has already been accepted upstream:
>   a812b09a6b599 ("dt-bindings: pci: spacemit: Introduce PCIe host
> 		  controller")
>   ff64e078e45fa ("PCI: spacemit: Add SpacemiT PCIe host driver")
> However this series still includes devicetree patches to enable the
> PCIe controller (along with the PHYs).
> 
> The patches that remain in version 7 of this series are unchanged;
> they are simply rebased on top of Linux v6.19-rc1.  The first two
> patches are the DT bindings for the PCIe and combo PCIe/USB PHY.
> The third is the PHY driver, and the last two are devicetree updates
> to enable the PCIe controller and PHYs.
> 
> 					-Alex
> 
> Alex Elder (5):
>   dt-bindings: phy: spacemit: Add SpacemiT PCIe/combo PHY
>   dt-bindings: phy: spacemit: Introduce PCIe PHY
>   phy: spacemit: Introduce PCIe/combo PHY
>   riscv: dts: spacemit: Add a PCIe regulator
>   riscv: dts: spacemit: PCIe and PHY-related updates
> 
anyway, for this series, I've also tested on bananapi with nvme card, so

Tested-by: Yixun Lan <dlan@...too.org>

-- 
Yixun Lan (dlan)