[PATCH 2/4] mmc: sunxi: Make sample clocks optional

[Hans de Goede]

Hi,

On 25-07-16 10:18, Maxime Ripard wrote:
> Hi,
>
> On Sat, Jul 16, 2016 at 12:46:02PM +0200, Hans de Goede wrote:
>> It turns out that sun4i (A10) and sun5i (A13 & co) do not have sample
>> clocks, so make them optional.
>>
>> Since these do not have sample clocks, they cannot (reliably) do
>> DDR rates, so only set MMC_CAP_1_8V_DDR when we do have sample clks.
>>
>> Note this patch only changes the devm_clk_get error checking and sets
>> the clocks to NULL if they don't exists. All the clk_foo calls accept
>> a NULL clk and will return success when called with a NULL clk, so this
>> is all that is necessary.
>
> The clocks aren't really optional. They're not needed for the A10 /
> A13, and mandatory for the A20 and later.
>
> Having a new compatible for the A20 that would require that clock and
> not require it for the A10/A13 anymore seems more appropriate.

Ok, I've prepared a new version using a new compatible.

Regards,

Hans