linux-kernel - Re: [PATCH 06/13] mtd: spinand: Add macros for Octal DTR page read and write operations

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Message-ID: <88915cc5-a2b7-4971-f9a1-a98bd944d5e7@ti.com>
Date:   Fri, 20 Aug 2021 16:05:27 +0530
From:   Apurva Nandan <a-nandan@...com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
CC:     Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Mark Brown <broonie@...nel.org>,
        Patrice Chotard <patrice.chotard@...s.st.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, Pratyush Yadav <p.yadav@...com>
Subject: Re: [PATCH 06/13] mtd: spinand: Add macros for Octal DTR page read
 and write operations

Hi Miquèl,

On 07/08/21 12:24 am, Miquel Raynal wrote:
> Hi Apurva,
> 
> Apurva Nandan <a-nandan@...com> wrote on Tue, 13 Jul 2021 13:05:31
> +0000:
> 
>> Define new PAGE_READ_FROM_CACHE and PROG_LOAD op templates for Octal
>> DTR SPI mode. These templates would used in op_variants and
> 
>                                  will be
> 

Yeah, ok!

>> op_templates for defining Octal DTR read from cache and write to
>> cache operations.
>>
>> Datasheet: https://www.winbond.com/export/sites/winbond/datasheet/W35N01JW_Datasheet_Brief.pdf
>>
>> Signed-off-by: Apurva Nandan <a-nandan@...com>
>> ---
>>   include/linux/mtd/spinand.h | 12 ++++++++++++
>>   1 file changed, 12 insertions(+)
>>
>> diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
>> index ebb19b2cec84..35816b8cfe81 100644
>> --- a/include/linux/mtd/spinand.h
>> +++ b/include/linux/mtd/spinand.h
>> @@ -122,6 +122,12 @@
>>   		   SPI_MEM_OP_DUMMY(ndummy, 4),				\
>>   		   SPI_MEM_OP_DATA_IN(len, buf, 4))
>>   
>> +#define SPINAND_PAGE_READ_FROM_CACHE_OCTALIO_DTR_OP(addr, ndummy, buf, len) \
>> +	SPI_MEM_OP(SPI_MEM_OP_CMD_DTR(2, 0x9d9d, 8),			\
>> +		   SPI_MEM_OP_ADDR_DTR(2, addr, 8),			\
>> +		   SPI_MEM_OP_DUMMY_DTR(ndummy, 8),			\
>> +		   SPI_MEM_OP_DATA_IN_DTR(len, buf, 8))
>> +
>>   #define SPINAND_PROG_EXEC_OP(addr)					\
>>   	SPI_MEM_OP(SPI_MEM_OP_CMD(0x10, 1),				\
>>   		   SPI_MEM_OP_ADDR(3, addr, 1),				\
>> @@ -140,6 +146,12 @@
>>   		   SPI_MEM_OP_NO_DUMMY,					\
>>   		   SPI_MEM_OP_DATA_OUT(len, buf, 4))
>>   
>> +#define SPINAND_PROG_LOAD_OCTALIO_DTR(reset, addr, buf, len)		\
>> +	SPI_MEM_OP(SPI_MEM_OP_CMD_DTR(2, reset ? 0x0202 : 0x8484, 8),	\
>> +		   SPI_MEM_OP_ADDR_DTR(2, addr, 8),			\
>> +		   SPI_MEM_OP_NO_DUMMY,					\
>> +		   SPI_MEM_OP_DATA_OUT_DTR(len, buf, 8))
>> +
>>   #define SPINAND_PROTO_BUSWIDTH_MASK	GENMASK(6, 0)
>>   #define SPINAND_PROTO_DTR_BIT		BIT(7)
>>   
> 
> Thanks,
> Miquèl
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
> 

Thanks,
Apurva Nandan

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