Re: [PATCH v2 2/3] spi: meson-axg: enhance output enable feature

From: Sunny Luo
Date: Thu Dec 13 2018 - 07:50:13 EST


Hi Mark&Jerome,

On 2018/12/13 19:53, Mark Brown wrote:
On Thu, Dec 13, 2018 at 10:04:56AM +0100, Jerome Brunet wrote:
On Thu, 2018-12-13 at 16:39 +0800, Sunny Luo wrote:

writel_bits_relaxed(BIT(24), BIT(24), spicc->base + SPICC_TESTREG);
+ meson_spicc_oen_enable(spicc);
+

Any specific reason for doing this in prepare_message() ? It looks like
something that could/should be done during the probe ?

If it's for power management then there should be a matching disable in
unprepare_message() (or this should just be in the runtime PM code,
though it's possible there's stuff that's only needed while actually
doing transfers in which case this could make sense).

OEN is only used to avoid the signals floating in unexpected state, i will move it into probe next patch.

Please delete unneeded context from mails when replying. Doing this
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material.

OK.