linux-kernel - Re: [PATCH v2 1/6] dt-bindings: pci: amlogic,meson-pcie: Add G12A bindings

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Date:   Mon, 16 Sep 2019 14:46:43 +0100
From:   Andrew Murray <andrew.murray@....com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     khilman@...libre.com, lorenzo.pieralisi@....com, kishon@...com,
        bhelgaas@...gle.com, devicetree@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        yue.wang@...ogic.com, maz@...nel.org, repk@...plefau.lt,
        nick@...das.com, gouwa@...das.com, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v2 1/6] dt-bindings: pci: amlogic,meson-pcie: Add G12A
 bindings

On Mon, Sep 16, 2019 at 02:50:17PM +0200, Neil Armstrong wrote:
> Add PCIE bindings for the Amlogic G12A SoC, the support is the same
> but the PHY is shared with USB3 to control the differential lines.
> 
> Thus this adds a phy phandle to control the PHY, and only requires the
> MIPI clock for the Amlogic AXG SoC Family.
> 
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---

Reviewed-by: Andrew Murray <andrew.murray@....com>

>  .../devicetree/bindings/pci/amlogic,meson-pcie.txt   | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt
> index efa2c8b9b85a..84fdc422792e 100644
> --- a/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt
> +++ b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt
> @@ -9,13 +9,16 @@ Additional properties are described here:
>  
>  Required properties:
>  - compatible:
> -	should contain "amlogic,axg-pcie" to identify the core.
> +	should contain :
> +	- "amlogic,axg-pcie" for AXG SoC Family
> +	- "amlogic,g12a-pcie" for G12A SoC Family
> +	to identify the core.
>  - reg:
>  	should contain the configuration address space.
>  - reg-names: Must be
>  	- "elbi"	External local bus interface registers
>  	- "cfg"		Meson specific registers
> -	- "phy"		Meson PCIE PHY registers
> +	- "phy"		Meson PCIE PHY registers for AXG SoC Family
>  	- "config"	PCIe configuration space
>  - reset-gpios: The GPIO to generate PCIe PERST# assert and deassert signal.
>  - clocks: Must contain an entry for each entry in clock-names.
> @@ -23,12 +26,13 @@ Required properties:
>  	- "pclk"       PCIe GEN 100M PLL clock
>  	- "port"       PCIe_x(A or B) RC clock gate
>  	- "general"    PCIe Phy clock
> -	- "mipi"       PCIe_x(A or B) 100M ref clock gate
> +	- "mipi"       PCIe_x(A or B) 100M ref clock gate for AXG SoC Family
>  - resets: phandle to the reset lines.
>  - reset-names: must contain "phy" "port" and "apb"
> -       - "phy"         Share PHY reset
> +       - "phy"         Share PHY reset for AXG SoC Family
>         - "port"        Port A or B reset
>         - "apb"         Share APB reset
> +- phys: should contain a phandle to the shared phy for G12A SoC Family
>  - device_type:
>  	should be "pci". As specified in designware-pcie.txt
>  
> -- 
> 2.22.0
>