linux-kernel - Re: [PATCH v2] ARM: dts: at91: sama5d4

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Date:   Fri, 16 Jul 2021 21:15:08 +0200
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Tudor Ambarus <tudor.ambarus@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <ludovic.desroches@...rochip.com>
CC:     <claudiu.beznea@...rochip.com>, <eugen.hristev@...rochip.com>,
        <codrin.ciubotariu@...rochip.com>, <emil.velikov@...labora.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] ARM: dts: at91: sama5d4_xplained: Remove spi0 node

On 16/07/2021 at 17:47, Tudor Ambarus wrote:
> sama5d4_xplained has an optional on-board serial DataFlash (AT25DF321A),
> which does not come populated on board by default. Since the spi0 node
> does not have any child populated by default, thus no user on
> sama5d4_xplained, remove it. This avoids the following error in SPI NOR,
> which reads the values of the pulled downed lines, unrecognizing the flash:
> 
> spi-nor spi0.0: unrecognized JEDEC id bytes: 00 00 00 00 00 00
> 
> Signed-off-by: Tudor Ambarus <tudor.ambarus@...rochip.com>

Acked-by: Nicolas Ferre <nicolas.ferre@...rochip.com>

Queued in at91-dt.

Regards,
   Nicolas

> ---
>   arch/arm/boot/dts/at91-sama5d4_xplained.dts | 10 ----------
>   1 file changed, 10 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/at91-sama5d4_xplained.dts b/arch/arm/boot/dts/at91-sama5d4_xplained.dts
> index 0b3ad1b580b8..046796c5b9b0 100644
> --- a/arch/arm/boot/dts/at91-sama5d4_xplained.dts
> +++ b/arch/arm/boot/dts/at91-sama5d4_xplained.dts
> @@ -38,16 +38,6 @@ uart0: serial@...04000 {
>   				status = "okay";
>   			};
>   
> -			spi0: spi@...10000 {
> -				cs-gpios = <&pioC 3 0>, <0>, <0>, <0>;
> -				status = "okay";
> -				m25p80@0 {
> -					compatible = "atmel,at25df321a";
> -					spi-max-frequency = <50000000>;
> -					reg = <0>;
> -				};
> -			};
> -
>   			i2c0: i2c@...14000 {
>   				i2c-digital-filter;
>   				status = "okay";
> 


-- 
Nicolas Ferre