linux-kernel - Re: [PATCH 1/3] dt-bindings: phy: tegra-xusb: List PLL power supplies

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Date:   Tue, 21 May 2019 17:00:44 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Jon Hunter <jonathanh@...dia.com>, JC Kuo <jckuo@...dia.com>,
        linux-tegra@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH 1/3] dt-bindings: phy: tegra-xusb: List PLL power supplies

On Thu, Apr 25, 2019 at 05:34:42PM +0200, Thierry Reding wrote:
> From: Thierry Reding <treding@...dia.com>
> 
> These power supplies provide power for various PLLs that are set up and
> driven by the XUSB pad controller. These power supplies were previously
> improperly added to the PCIe and XUSB controllers, but depending on the
> driver probe order, power to the PLLs will not be supplied soon enough
> and cause initialization to fail.
> 
> Reviewed-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Thierry Reding <treding@...dia.com>
> ---
> This was previously reviewed here:
> 
>     https://patchwork.ozlabs.org/patch/1077153/
> 
>  .../bindings/phy/nvidia,tegra124-xusb-padctl.txt     | 12 ++++++++++++
>  1 file changed, 12 insertions(+)

Hi Kishon,

do you have any comments on this series. It's fairly straightforward but
is required in order to make XUSB work properly on Jetson Nano for which
support was merged in v5.2-rc1.

Thanks,
Thierry

> 
> diff --git a/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt b/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt
> index daedb15f322e..9fb682e47c29 100644
> --- a/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt
> +++ b/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt
> @@ -42,6 +42,18 @@ Required properties:
>  - reset-names: Must include the following entries:
>    - "padctl"
>  
> +For Tegra124:
> +- avdd-pll-utmip-supply: UTMI PLL power supply. Must supply 1.8 V.
> +- avdd-pll-erefe-supply: PLLE reference PLL power supply. Must supply 1.05 V.
> +- avdd-pex-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05 V.
> +- hvdd-pex-pll-e-supply: High-voltage PLLE power supply. Must supply 3.3 V.
> +
> +For Tegra210:
> +- avdd-pll-utmip-supply: UTMI PLL power supply. Must supply 1.8 V.
> +- avdd-pll-uerefe-supply: PLLE reference PLL power supply. Must supply 1.05 V.
> +- dvdd-pex-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05 V.
> +- hvdd-pex-pll-e-supply: High-voltage PLLE power supply. Must supply 1.8 V.
> +
>  For Tegra186:
>  - avdd-pll-erefeut-supply: UPHY brick and reference clock as well as UTMI PHY
>    power supply. Must supply 1.8 V.
> -- 
> 2.21.0
> 

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