Re: [PATCH v4 1/2] soc: samsung: add exynos chipid driver support

From: Pankaj Dubey
Date: Thu Dec 04 2014 - 00:00:40 EST

Hi Arnd,

On Wednesday 03 December 2014 04:13 PM, Arnd Bergmann wrote:
Exynos SoCs have Chipid, for identification of product IDs
and SoC revisions. This patch intendes to provide initialization
code for all these functionalites, at the same time it provides some
sysfs entries for accessing these information to userspace.

This driver usese existing binding for exnos-chipid.


Thanks for review.

On Wednesday 03 December 2014 13:47:37 Pankaj Dubey wrote:

+ soc_dev_attr->soc_id = exynos_product_id_to_name(soc_product_id);
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR(soc_dev))
+ goto free_rev;
+ device_create_file(soc_device_to_device(soc_dev), &exynos_product_attr);
+ device_create_file(soc_device_to_device(soc_dev),
+ &exynos_main_rev_attr);
+ device_create_file(soc_device_to_device(soc_dev), &exynos_sub_rev_attr);

I don't like the idea of having three extra nonstandard properties here,
especially when you are not using the machine field for anything useful.

I did not get you here. Any suggestions how we can use 'machine' field more useful way.

Also, all three of these just come from the same register, why expose
them all as the machine and revision standard properties.

Agreed. These properties are basically giving same information but with small modification.
As you said these are getting exposed via standard properties as well, so I have no issue to drop them. Just waiting for more review from Samsung folks, will take care of this in next version.

Pankaj Dubey

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