linux-kernel - Re: [PATCH v3 1/3] arm64: dts: marvell: espressobin-ultra: fix SPI-NOR config

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Date:   Thu, 24 Mar 2022 13:20:00 +0100
From:   Robert Marko <robert.marko@...tura.hr>
To:     Andrew Lunn <andrew@...n.ch>, gregory.clement@...tlin.com,
        sebastian.hesselbarth@...il.com, Rob Herring <robh+dt@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Pali Rohár <pali@...nel.org>
Subject: Re: [PATCH v3 1/3] arm64: dts: marvell: espressobin-ultra: fix
 SPI-NOR config

On Tue, Sep 28, 2021 at 7:09 PM Robert Marko <robert.marko@...tura.hr> wrote:
>
> SPI config for the SPI-NOR is incorrect and completely breaking
> reading/writing to the onboard SPI-NOR.
>
> SPI-NOR is connected in the single(x1) IO mode and not in the quad
> (x4) mode.
> Also, there is no need to override the max frequency from the DTSI
> as the mx25u3235f that is used supports 104Mhz.
>
> Fixes: 3404fe15a60f ("arm64: dts: marvell: add DT for ESPRESSObin-Ultra")
> Signed-off-by: Robert Marko <robert.marko@...tura.hr>
> ---
> Changes in v3:
> * Add Fixes tag
> ---
>  arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dts | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dts b/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dts
> index c5eb3604dd5b..610ff6f385c7 100644
> --- a/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dts
> +++ b/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dts
> @@ -71,10 +71,6 @@ &sdhci1 {
>
>  &spi0 {
>         flash@0 {
> -               spi-max-frequency = <108000000>;
> -               spi-rx-bus-width = <4>;
> -               spi-tx-bus-width = <4>;
> -
>                 partitions {
>                         compatible = "fixed-partitions";
>                         #address-cells = <1>;
> --
> 2.31.1
>

Hi,

It would be great to get a review of the series or at least of this patch,
otherwise, the SPI-NOR is unusable.

Regards,
Robert


-- 
Robert Marko
Staff Embedded Linux Engineer
Sartura Ltd.
Lendavska ulica 16a
10000 Zagreb, Croatia
Email: robert.marko@...tura.hr
Web: www.sartura.hr