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Message-ID: <c9fa6376-a88d-278a-7c20-813f0e8975d8@salutedevices.com>
Date: Tue, 9 Apr 2024 17:10:25 +0300
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Subject: Re: [PATCH v2 1/2] dt-bindings: mtd: amlogic,meson-nand: support
 fields for boot ROM code
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To: Rob Herring <robh@kernel.org>
CC: Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger
	<richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Neil
 Armstrong <neil.armstrong@linaro.org>, Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>, Martin Blumenstingl
	<martin.blumenstingl@googlemail.com>, <linux-mtd@lists.infradead.org>,
	<devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>,
	<linux-amlogic@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	<oxffffaa@gmail.com>, <kernel@sberdevices.ru>
References: <20240408085931.456337-1-avkrasnov@salutedevices.com>
 <20240408085931.456337-2-avkrasnov@salutedevices.com>
 <20240409134718.GA1050037-robh@kernel.org>
From: Arseniy Krasnov <avkrasnov@salutedevices.com>
In-Reply-To: <20240409134718.GA1050037-robh@kernel.org>
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On 09.04.2024 16:47, Rob Herring wrote:
> On Mon, Apr 08, 2024 at 11:59:30AM +0300, Arseniy Krasnov wrote:
>> Boot ROM code on Meson requires that some pages on NAND must be written
>> in special mode: "short" ECC mode where each block is 384 bytes and
>> scrambling mode is on. Such pages located with the specified interval
>> within specified offset. Both interval and offset are located in the
>> device tree and used by driver if 'nand-is-boot-medium' is set for
>> NAND chip.
>>
>> Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
>> ---
>>  .../bindings/mtd/amlogic,meson-nand.yaml           | 14 ++++++++++++++
>>  1 file changed, 14 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> index 57b6957c8415..80ba5003ca70 100644
>> --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml
>> @@ -64,11 +64,25 @@ patternProperties:
>>          items:
>>            maximum: 0
>>  
>> +      amlogic,boot-page-last:
>> +        $ref: /schemas/types.yaml#/definitions/uint32
>> +        description:
>> +          The NFC driver needs this information to select ECC
>> +          algorithms supported by the boot ROM.
>> +
>> +      amlogic,boot-page-step:
>> +        $ref: /schemas/types.yaml#/definitions/uint32
>> +        description:
>> +          The NFC driver needs this information to select ECC
>> +          algorithms supported by the boot ROM (in pages).
>> +
>>      unevaluatedProperties: false
>>  
>>      dependencies:
>>        nand-ecc-strength: [nand-ecc-step-size]
>>        nand-ecc-step-size: [nand-ecc-strength]
>> +      amlogic,boot-page-last: [nand-is-boot-medium, amlogic,boot-page-step]
>> +      amlogic,boot-page-step: [nand-is-boot-medium, amlogic,boot-page-last]
> 
> You need quotes if using the inline syntax.

IIUC it must look like this:

amlogic,boot-page-last: [nand-is-boot-medium, "amlogic,boot-page-step"]

etc.

> 
> Rob