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From: Lee Jones <lee.jones@linaro.org>
To: Brian Norris <computersforpeace@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, kernel@stlinux.com, "Gupta,
	Pekon\"" <pekon@ti.com>,
	Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
	linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
	Boris BREZILLON <b.brezillon.dev@gmail.com>
Subject: Re: [PATCH] mtd: nand: stm_nand_bch: add new driver
Date: Wed, 6 Aug 2014 11:44:40 +0100	[thread overview]
Message-ID: <20140806104440.GC10136@lee--X1> (raw)
In-Reply-To: <20140731164709.GK9030@lee--X1>

On Thu, 31 Jul 2014, Lee Jones wrote:
> On Wed, 02 Jul 2014, Brian Norris wrote:
> > On Wed, May 28, 2014 at 10:20:05AM +0100, Lee Jones wrote:

[...]

> > > +	if (IS_ERR(pdata))
> > > +		return PTR_ERR(pdata);
> > > +
> > > +	ppdata.of_node = stm_of_get_partitions_node(np, 0);
> > 
> > So you only support a single bank, at chip-select 0? Is this a
> > hardware limitation, or simply software? You might consider whether this
> > needs to be noted in the DT binding too -- it currently suggests that
> > this can be plural.
> 
> Yes, only one bank.  Chip select is not possible.

Sorry, not only one bank.

We can have multiple banks, but only one chip.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

WARNING: multiple messages have this Message-ID (diff)
From: Lee Jones <lee.jones@linaro.org>
To: Brian Norris <computersforpeace@gmail.com>
Cc: devicetree@vger.kernel.org,
	Boris BREZILLON <b.brezillon.dev@gmail.com>,
	kernel@stlinux.com, linux-kernel@vger.kernel.org,
	linux-mtd@lists.infradead.org, "Gupta, Pekon\"" <pekon@ti.com>,
	Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] mtd: nand: stm_nand_bch: add new driver
Date: Wed, 6 Aug 2014 11:44:40 +0100	[thread overview]
Message-ID: <20140806104440.GC10136@lee--X1> (raw)
In-Reply-To: <20140731164709.GK9030@lee--X1>

On Thu, 31 Jul 2014, Lee Jones wrote:
> On Wed, 02 Jul 2014, Brian Norris wrote:
> > On Wed, May 28, 2014 at 10:20:05AM +0100, Lee Jones wrote:

[...]

> > > +	if (IS_ERR(pdata))
> > > +		return PTR_ERR(pdata);
> > > +
> > > +	ppdata.of_node = stm_of_get_partitions_node(np, 0);
> > 
> > So you only support a single bank, at chip-select 0? Is this a
> > hardware limitation, or simply software? You might consider whether this
> > needs to be noted in the DT binding too -- it currently suggests that
> > this can be plural.
> 
> Yes, only one bank.  Chip select is not possible.

Sorry, not only one bank.

We can have multiple banks, but only one chip.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

WARNING: multiple messages have this Message-ID (diff)
From: lee.jones@linaro.org (Lee Jones)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mtd: nand: stm_nand_bch: add new driver
Date: Wed, 6 Aug 2014 11:44:40 +0100	[thread overview]
Message-ID: <20140806104440.GC10136@lee--X1> (raw)
In-Reply-To: <20140731164709.GK9030@lee--X1>

On Thu, 31 Jul 2014, Lee Jones wrote:
> On Wed, 02 Jul 2014, Brian Norris wrote:
> > On Wed, May 28, 2014 at 10:20:05AM +0100, Lee Jones wrote:

[...]

> > > +	if (IS_ERR(pdata))
> > > +		return PTR_ERR(pdata);
> > > +
> > > +	ppdata.of_node = stm_of_get_partitions_node(np, 0);
> > 
> > So you only support a single bank, at chip-select 0? Is this a
> > hardware limitation, or simply software? You might consider whether this
> > needs to be noted in the DT binding too -- it currently suggests that
> > this can be plural.
> 
> Yes, only one bank.  Chip select is not possible.

Sorry, not only one bank.

We can have multiple banks, but only one chip.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

  parent reply	other threads:[~2014-08-06 10:44 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-28  9:20 [PATCH] mtd: nand: stm_nand_bch: add new driver Lee Jones
2014-05-28  9:20 ` Lee Jones
2014-05-28  9:20 ` Lee Jones
2014-07-03  0:22 ` Brian Norris
2014-07-03  0:22   ` Brian Norris
2014-07-03  0:22   ` Brian Norris
2014-07-03  8:05   ` Boris BREZILLON
2014-07-03  8:05     ` Boris BREZILLON
2014-07-03  8:05     ` Boris BREZILLON
2014-07-07 23:52     ` Brian Norris
2014-07-07 23:52       ` Brian Norris
2014-07-07 23:52       ` Brian Norris
2014-07-07 23:52       ` Brian Norris
2014-07-08  7:58       ` Boris BREZILLON
2014-07-08  7:58         ` Boris BREZILLON
2014-07-08  7:58         ` Boris BREZILLON
2014-07-09 17:22         ` Brian Norris
2014-07-09 17:22           ` Brian Norris
2014-07-09 17:22           ` Brian Norris
2014-07-09 17:22           ` Brian Norris
2014-07-03  9:09   ` Gupta, Pekon
2014-07-03  9:09     ` Gupta, Pekon
2014-07-03  9:09     ` Gupta, Pekon
2014-07-08  0:16     ` Brian Norris
2014-07-08  0:16       ` Brian Norris
2014-07-08  0:16       ` Brian Norris
2014-07-08  0:16       ` Brian Norris
2014-08-05 14:23     ` Lee Jones
2014-08-05 14:23       ` Lee Jones
2014-08-05 14:23       ` Lee Jones
2014-08-05 14:23       ` Lee Jones
2014-08-05 21:02       ` pekon
2014-08-05 21:02         ` pekon at pek-sem.com
2014-08-05 21:02         ` pekon
2014-08-19  2:12         ` Brian Norris
2014-08-19  2:12           ` Brian Norris
2014-08-19  2:12           ` Brian Norris
2014-08-19  2:12           ` Brian Norris
2014-08-20 18:02           ` pekon
2014-08-20 18:02             ` pekon
2014-08-20 18:02             ` pekon
2014-07-31 16:47   ` Lee Jones
2014-07-31 16:47     ` Lee Jones
2014-07-31 16:47     ` Lee Jones
2014-07-31 17:54     ` Brian Norris
2014-07-31 17:54       ` Brian Norris
2014-07-31 17:54       ` Brian Norris
2014-07-31 17:54       ` Brian Norris
2014-08-01  9:27       ` Lee Jones
2014-08-01  9:27         ` Lee Jones
2014-08-01  9:27         ` Lee Jones
2014-08-19  2:42         ` Brian Norris
2014-08-19  2:42           ` Brian Norris
2014-08-19  2:42           ` Brian Norris
2014-08-19  2:42           ` Brian Norris
2014-08-06 10:44     ` Lee Jones [this message]
2014-08-06 10:44       ` Lee Jones
2014-08-06 10:44       ` Lee Jones
2014-08-06 10:26   ` Lee Jones
2014-08-06 10:26     ` Lee Jones
2014-08-06 10:26     ` Lee Jones
2014-07-03  0:50 ` Brian Norris
2014-07-03  0:50   ` Brian Norris
2014-07-03  0:50   ` Brian Norris

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