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From: Daniel Mack <zonque@gmail.com>
To: Jon Hunter <jon-hunter@ti.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org,
	x0148406@ti.com, tony@atomide.com, paul@pwsan.com,
	nsekhar@ti.com
Subject: Re: [PATCH 4/4] OMAP: mtd: gpmc: add DT bindings for GPMC timings and NAND
Date: Thu, 25 Oct 2012 11:43:40 +0200	[thread overview]
Message-ID: <508909CC.9000000@gmail.com> (raw)
In-Reply-To: <50889BB2.3090107@ti.com>

Hi Jon,

On 25.10.2012 03:53, Jon Hunter wrote:
> 
> On 10/22/2012 02:55 PM, Daniel Mack wrote:

>> +Example for an AM33xx board:
>> +
>> +	gpmc: gpmc@50000000 {
>> +		compatible = "ti,gpmc";
>> +		ti,hwmods = "gpmc";
>> +		reg = <0x50000000 0x1000000>;
> 
> Nit-pick, that size is quite large for a register range. I recommend
> looking at the HWMOD data file
> (arch/arm/mach-omap2/omap_hwmod_33xx_data.c) and see how much space is
> allocated for the registers (see structure am33xx_gpmc_addr_space).

Yeah but reserving the entire memory as per the reference manual also
prvents other from poking around in the same register space. Is there a
scenario in which it would of disadvantage to reserve all that memory?



Daniel



WARNING: multiple messages have this Message-ID (diff)
From: zonque@gmail.com (Daniel Mack)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] OMAP: mtd: gpmc: add DT bindings for GPMC timings and NAND
Date: Thu, 25 Oct 2012 11:43:40 +0200	[thread overview]
Message-ID: <508909CC.9000000@gmail.com> (raw)
In-Reply-To: <50889BB2.3090107@ti.com>

Hi Jon,

On 25.10.2012 03:53, Jon Hunter wrote:
> 
> On 10/22/2012 02:55 PM, Daniel Mack wrote:

>> +Example for an AM33xx board:
>> +
>> +	gpmc: gpmc at 50000000 {
>> +		compatible = "ti,gpmc";
>> +		ti,hwmods = "gpmc";
>> +		reg = <0x50000000 0x1000000>;
> 
> Nit-pick, that size is quite large for a register range. I recommend
> looking at the HWMOD data file
> (arch/arm/mach-omap2/omap_hwmod_33xx_data.c) and see how much space is
> allocated for the registers (see structure am33xx_gpmc_addr_space).

Yeah but reserving the entire memory as per the reference manual also
prvents other from poking around in the same register space. Is there a
scenario in which it would of disadvantage to reserve all that memory?



Daniel

  reply	other threads:[~2012-10-25  9:43 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-22 19:55 [PATCH 0/4] RFC: OMAP GPMC bindings Daniel Mack
2012-10-22 19:55 ` Daniel Mack
2012-10-22 19:55 ` [PATCH 1/4] mtd: omap-nand: pass device_node in platform data Daniel Mack
2012-10-22 19:55   ` Daniel Mack
2012-10-22 19:55 ` [PATCH 2/4] ARM: OMAP: gpmc: enable hwecc for AM33xx SoCs Daniel Mack
2012-10-22 19:55   ` Daniel Mack
2012-10-22 19:55 ` [PATCH 3/4] ARM: OMAP: gpmc: don't create devices from initcall on DT Daniel Mack
2012-10-22 19:55   ` Daniel Mack
2012-10-22 19:55 ` [PATCH 4/4] OMAP: mtd: gpmc: add DT bindings for GPMC timings and NAND Daniel Mack
2012-10-22 19:55   ` Daniel Mack
2012-10-24 23:27   ` Tony Lindgren
2012-10-24 23:27     ` Tony Lindgren
2012-10-24 23:31     ` Daniel Mack
2012-10-24 23:31       ` Daniel Mack
2012-10-29  8:10       ` Afzal Mohammed
2012-10-29  8:10         ` Afzal Mohammed
2012-10-29 11:15         ` Daniel Mack
2012-10-29 11:15           ` Daniel Mack
2012-10-29 11:28           ` Afzal Mohammed
2012-10-29 11:28             ` Afzal Mohammed
2012-10-29 12:32             ` Daniel Mack
2012-10-29 12:32               ` Daniel Mack
2012-10-29 12:56               ` Afzal Mohammed
2012-10-29 12:56                 ` Afzal Mohammed
2012-10-25  1:28   ` Jon Hunter
2012-10-25  1:28     ` Jon Hunter
2012-10-25  8:00     ` Daniel Mack
2012-10-25  8:00       ` Daniel Mack
2012-10-25 13:16       ` Jon Hunter
2012-10-25 13:16         ` Jon Hunter
2012-10-29  8:09       ` Afzal Mohammed
2012-10-29  8:09         ` Afzal Mohammed
2012-10-25  1:53   ` Jon Hunter
2012-10-25  1:53     ` Jon Hunter
2012-10-25  9:43     ` Daniel Mack [this message]
2012-10-25  9:43       ` Daniel Mack
2012-10-25 13:22       ` Jon Hunter
2012-10-25 13:22         ` Jon Hunter

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