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SubjectRe: [PATCH v2 2/3] mmc: sunxi: Filter out unsupported modes declared in the device tree
On Tue, Feb 05, 2019 at 11:42:24PM +0800, Chen-Yu Tsai wrote:
> The MMC device tree bindings include properties used to signal various
> signalling speed modes. Until now the sunxi driver was accepting them
> without any further filtering, while the sunxi device trees were not
> actually using them.
> Since some of the H5 boards can not run at higher speed modes stably,
> we are resorting to declaring the higher speed modes per-board.
> Regardless, having boards declare modes and blindly following them,
> even without proper support in the driver, is generally a bad thing.
> Filter out all unsupported modes from the capabilities mask after
> the device tree properties have been parsed.
> Cc: <>
> Signed-off-by: Chen-Yu Tsai <>

Acked-by: Maxime Ripard <>


Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
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