Re: [PATCH v3] dmaengine: mv_xor_v2: Fix clock resource by adding a register clock

On Wed, Mar 07, 2018 at 04:40:10PM +0100, Gregory CLEMENT wrote:

On the CP110 components which are present on the Armada 7K/8K SoC we need
to explicitly enable the clock for the registers. However it is not
needed for the AP8xx component, that's why this clock is optional.

With this patch both clock have now a name, but in order to be backward
compatible, the name of the first clock is not used. It allows to still
use this clock with a device tree using the old binding.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
---
Changelog:

v1 -> v2

 - Fix typos in the commit log
 - Add more explanation in te commit log
 - Only skip the reg clock usage if the clock is not presetn in the
   device tree (-ENOENT)
 - Add dt list in CC

v2 -> v3

 - Fix the ENOENT test

 .../devicetree/bindings/dma/mv-xor-v2.txt          |  6 +++++-

Reviewed-by: Rob Herring <robh@kernel.org>

 drivers/dma/mv_xor_v2.c                            | 25 +++++++++++++++++-----
 2 files changed, 25 insertions(+), 6 deletions(-)