[PATCH v3 1/7] ARM: sun8i: smp: Add support for A83T

Mylène Josserand mylene.josserand at bootlin.com
Mon Feb 19 02:39:45 PST 2018

Hello Maxime,

On Mon, 19 Feb 2018 10:04:01 +0100
Maxime Ripard <maxime.ripard at bootlin.com> wrote:

> Hi,
> On Mon, Feb 19, 2018 at 09:18:31AM +0100, Mylène Josserand wrote:
> > Add the support for A83T.
> > 
> > A83T SoC has an additional register than A80 to handle CPU configurations:
> > R_CPUS_CFG. Information about the register comes from Allwinner's BSP
> > driver.
> > An important difference is the Power Off Gating register for clusters
> > which is BIT(4) in case of SUN9I-A80 and BIT(0) in case of SUN8I-A83T.
> > 
> > Signed-off-by: Mylène Josserand <mylene.josserand at bootlin.com>  
> This is some high-level review, but you should split this patch in
> three:
>   - One to refactor the current code to split the DT parsing function
>     (and rename the function to sun9i_smp_dt_parse) and the variable renames
>   - One to enable the A83t SMP (with the function called sun8i_a83t_smp_dt_parse)
>   - One to enable the A83t hotplug (merged with your last patch)

Thank you for the review.
Sure, I will split my patch in three.

> Also, you're calling a lot of times of_machine_is_compatible, and this
> is quite inefficient. You should call it once and store the result.




Mylène Josserand, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering

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