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

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Message-Id: <20220926180102.37614-1-amadeus@jmu.edu.cn>
Date:   Tue, 27 Sep 2022 02:00:59 +0800
From:   Chukun Pan <amadeus@....edu.cn>
To:     linux.amoon@...il.com
Cc:     heiko@...ech.de, 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,
        michael.riesch@...fvision.net, robh+dt@...nel.org,
        Chukun Pan <amadeus@....edu.cn>
Subject: Re: [PATCH-next v1] arm64: dts: rockchip: Enable NVM Express PCIe controller on rock3a

Hi,

On 26-09-22, 06:14, Anand Moon wrote:

> +	pcie30_3v3: gpio-regulator {
> +		compatible = "regulator-gpio";
> +		regulator-name = "pcie30_3v3";
> +		regulator-min-microvolt = <100000>;
> +		regulator-max-microvolt = <3300000>;
> +		gpios = <&gpio0 RK_PD4 GPIO_ACTIVE_HIGH>;
> +		gpios-states = <0x1>;
> +		states = <100000 0x0>, <3300000 0x1>;
> +	};

This is actually no different from vcc3v3-pcie regulator?

> +&pcie30phy {
> +	data-lanes = <0 1 2 3>;
> +	phy-supply = <&vcc3v3_pi6c_03>;
> +	status = "okay";
> +};

It seems that there is no need to define additional data-lanes when
the pcie3x1 node is not enabled, and phy-supply seems unnecessary on
this board.

Excuse me, can you try the patches I posted? Lspci can recognize
pcie3x2 normally, but I don't have a spare nvme hard drive right
now to test if it works.

Thanks, Chukun

---
Chukun Pan (3):
  arm64: dts: rockchip: Add regulator suffix to ROCK3 Model A
  arm64: dts: rockchip: Rename pinctrl label of pcie2x1 on rock-3a
  arm64: dts: rockchip: Add PCIe v3 nodes to rock-3a

 .../boot/dts/rockchip/rk3568-rock-3a.dts      | 36 ++++++++++++++-----
 1 file changed, 27 insertions(+), 9 deletions(-)

-- 
2.25.1