linux-kernel - Re: [PATCH] spi: atmel,quadspi: Define lan966x QSPI

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Date:   Thu, 7 Apr 2022 12:54:49 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <Kavyasree.Kotagiri@...rochip.com>, <broonie@...nel.org>,
        <robh+dt@...nel.org>, <krzk+dt@...nel.org>
CC:     <Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <Claudiu.Beznea@...rochip.com>, <linux-spi@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>,
        <Manohar.Puri@...rochip.com>
Subject: Re: [PATCH] spi: atmel,quadspi: Define lan966x QSPI

On 4/7/22 13:54, Kavyasree Kotagiri wrote:
> LAN966x SoC supports 3 QSPI controllers. Each of them support
> data and clock frequency upto 100Mhz DDR and QUAD protocol.

How is this IP different than microchip,sama7g5-qspi? Does this speed
limitation come from the IP itself or from the board that you're using?

Neither of these instances support octal mode?

Cheers,
ta

> 
> Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@...rochip.com>
> ---
>  Documentation/devicetree/bindings/spi/atmel,quadspi.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/atmel,quadspi.yaml b/Documentation/devicetree/bindings/spi/atmel,quadspi.yaml
> index 1d493add4053..100d6e7f2748 100644
> --- a/Documentation/devicetree/bindings/spi/atmel,quadspi.yaml
> +++ b/Documentation/devicetree/bindings/spi/atmel,quadspi.yaml
> @@ -19,6 +19,7 @@ properties:
>        - microchip,sam9x60-qspi
>        - microchip,sama7g5-qspi
>        - microchip,sama7g5-ospi
> +      - microchip,lan966x-qspi
>  
>    reg:
>      items: