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From: <Tudor.Ambarus@microchip.com>
To: <p.yadav@ti.com>, <miquel.raynal@bootlin.com>, <richard@nod.at>,
	<vigneshr@ti.com>, <linux-mtd@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Cc: boris.brezillon@collabora.com, nsekhar@ti.com
Subject: Re: [PATCH v13 07/15] mtd: spi-nor: core: use dummy cycle and address width info from SFDP
Date: Wed, 30 Sep 2020 06:46:00 +0000	[thread overview]
Message-ID: <e8e829b2-5d06-6213-c240-17f2fdb72482@microchip.com> (raw)
In-Reply-To: <20200916124418.833-8-p.yadav@ti.com>

On 9/16/20 3:44 PM, Pratyush Yadav wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> The xSPI Profile 1.0 table specifies how many dummy cycles and address
> bytes are needed for the Read Status Register command in octal DTR mode.
> Use that information to send the correct Read SR command.
> 
> Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
> ---
>  drivers/mtd/spi-nor/core.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
> index cbb1aab27d03..88c9e18067f4 100644
> --- a/drivers/mtd/spi-nor/core.c
> +++ b/drivers/mtd/spi-nor/core.c
> @@ -383,6 +383,11 @@ static int spi_nor_read_sr(struct spi_nor *nor, u8 *sr)
>                                    SPI_MEM_OP_NO_DUMMY,
>                                    SPI_MEM_OP_DATA_IN(1, sr, 1));
> 
> +               if (spi_nor_protocol_is_dtr(nor->reg_proto)) {

this should be done just for octal dtr

> +                       op.addr.nbytes = nor->params->rdsr_addr_nbytes;
> +                       op.dummy.nbytes = nor->params->rdsr_dummy;
> +               }
> +
>                 spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
> 
>                 ret = spi_mem_exec_op(nor->spimem, &op);
> @@ -415,6 +420,11 @@ static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
>                                    SPI_MEM_OP_NO_DUMMY,
>                                    SPI_MEM_OP_DATA_IN(1, fsr, 1));
> 
> +               if (spi_nor_protocol_is_dtr(nor->reg_proto)) {

same here

> +                       op.addr.nbytes = nor->params->rdsr_addr_nbytes;
> +                       op.dummy.nbytes = nor->params->rdsr_dummy;
> +               }
> +
>                 spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
> 
>                 ret = spi_mem_exec_op(nor->spimem, &op);
> --
> 2.28.0
> 

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  reply	other threads:[~2020-09-30  6:46 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-16 12:44 [PATCH v13 00/15] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 01/15] mtd: spi-nor: core: use EOPNOTSUPP instead of ENOTSUPP Pratyush Yadav
2020-09-29 11:30   ` Tudor.Ambarus
2020-09-16 12:44 ` [PATCH v13 02/15] mtd: spi-nor: core: add spi_nor_{read, write}_reg() helpers Pratyush Yadav
2020-09-29 11:38   ` [PATCH v13 02/15] mtd: spi-nor: core: add spi_nor_{read,write}_reg() helpers Tudor.Ambarus
2020-09-29 12:54     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 03/15] mtd: spi-nor: core: add spi_nor_controller_ops_erase helper Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 04/15] mtd: spi-nor: add support for DTR protocol Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 05/15] mtd: spi-nor: sfdp: get command opcode extension type from BFPT Pratyush Yadav
2020-09-30  6:17   ` Tudor.Ambarus
2020-09-16 12:44 ` [PATCH v13 06/15] mtd: spi-nor: sfdp: parse xSPI Profile 1.0 table Pratyush Yadav
2020-09-30  6:44   ` Tudor.Ambarus
2020-09-30  6:53     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 07/15] mtd: spi-nor: core: use dummy cycle and address width info from SFDP Pratyush Yadav
2020-09-30  6:46   ` Tudor.Ambarus [this message]
2020-09-16 12:44 ` [PATCH v13 08/15] mtd: spi-nor: core: do 2 byte reads for SR and FSR in DTR mode Pratyush Yadav
2020-09-30  6:50   ` Tudor.Ambarus
2020-09-30  6:55     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 09/15] mtd: spi-nor: core: enable octal DTR mode when possible Pratyush Yadav
2020-09-29 11:26   ` Tudor.Ambarus
2020-09-29 12:51     ` Pratyush Yadav
2020-09-29 13:05       ` Tudor.Ambarus
2020-09-30  7:11   ` Tudor.Ambarus
2020-09-16 12:44 ` [PATCH v13 10/15] mtd: spi-nor: sfdp: detect Soft Reset sequence support from BFPT Pratyush Yadav
2020-09-30  7:23   ` Tudor.Ambarus
2020-09-30  7:31     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 11/15] mtd: spi-nor: core: perform a Soft Reset on shutdown Pratyush Yadav
2020-09-29 13:08   ` Pratyush Yadav
2020-09-30  7:32     ` Tudor.Ambarus
2020-09-30  7:43       ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 12/15] mtd: spi-nor: core: disable Octal DTR mode on suspend Pratyush Yadav
2020-09-30  7:40   ` Tudor.Ambarus
2020-09-30  7:44     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 13/15] mtd: spi-nor: core: expose spi_nor_default_setup() in core.h Pratyush Yadav
2020-09-30  7:51   ` Tudor.Ambarus
2020-09-30  8:03     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 14/15] mtd: spi-nor: spansion: add support for Cypress Semper flash Pratyush Yadav
2020-09-30  8:36   ` Tudor.Ambarus
2020-09-30 12:32     ` Pratyush Yadav
2020-09-16 12:44 ` [PATCH v13 15/15] mtd: spi-nor: micron-st: allow using MT35XU512ABA in Octal DTR mode Pratyush Yadav
2020-09-30  9:12   ` Tudor.Ambarus
2020-09-29  9:59 ` [RFC PATCH 0/3] mtd: spi-nor: Tackle stateful modes Tudor Ambarus
2020-09-29  9:59   ` [RFC PATCH 1/3] mtd: spi-nor: Introduce SNOR_F_IO_MODE_EN_VOLATILE Tudor Ambarus
2020-09-29 16:45     ` Vignesh Raghavendra
2020-09-29  9:59   ` [RFC PATCH 2/3] mtd: spi-nor: Introduce MTD_SPI_NOR_ALLOW_STATEFUL_MODES Tudor Ambarus
2020-09-29 16:45     ` Vignesh Raghavendra
2020-09-29  9:59   ` [RFC PATCH 3/3] mtd: spi-nor: Parse SFDP SCCR Map Tudor Ambarus
2020-09-30  9:57 ` [PATCH v13 00/15] mtd: spi-nor: add xSPI Octal DTR support Tudor.Ambarus
2020-09-30 12:01   ` Pratyush Yadav

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