linux-kernel - Re: [PATCH-next v1] arm64: dts: rockchip: Enable NVM Express PCIe controller on rock3a

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Date:   Wed, 28 Sep 2022 02:15:30 +0800
From:   Chukun Pan <amadeus@....edu.cn>
To:     linux.amoon@...il.com
Cc:     heiko@...ech.de, robh+dt@...nel.org, michael.riesch@...fvision.net,
        krzysztof.kozlowski+dt@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Chukun Pan <amadeus@....edu.cn>
Subject: Re: [PATCH-next v1] arm64: dts: rockchip: Enable NVM Express PCIe controller on rock3a

Hi Anand,

On 27-09-22, 19:16, Anand Moon wrote:

> As per the schematic below pice support with 2 regulators
>
> VCC3V3_PCIE        (SCT2250FPA)
> VCC3V3_PI6C_03  (PI6C557-03 is a spread spectrum clock generator
> supporting PCI Express and Ethernet requirements)

> [0] https://dl.radxa.com/rock3/docs/hw/3a/rock3a_v1.3_sch.pdf

Thanks for sharing, I rewrote this patch, can you try again?

> No, it did not work on my board, see bool logs.
> [0] https://pastebin.com/Lk93VFxg

>From the boot log, looks like ethernet is broken:
  mdio_bus stmmac-0: MDIO device at address 0 is missing.
  rk_gmac-dwmac fe010000.ethernet eth0: no phy at addr -1

Actually I had this problem too, and reusing the "snps, reset"
property solved it. What confuses me is am I doing something
wrong or there is something wrong with the device tree now?

Thanks,
Chukun

---
Chukun Pan (1):
  arm64: dts: rockchip: Add PCIe v3 nodes to rock-3a

 .../boot/dts/rockchip/rk3568-rock-3a.dts      | 52 ++++++++++++++++++-
 1 file changed, 51 insertions(+), 1 deletion(-)

-- 
2.25.1