On Tue, Sep 10, 2019 at 02:47:59AM +0000, Anson Huang wrote:

quoted

On Sat, Sep 7, 2019 at 9:47 PM Stephen Boyd [off-list ref] wrote:

quoted

Quoting Peng Fan (2019-08-27 01:17:50)

quoted

From: Peng Fan <peng.fan@nxp.com>

There is hardware issue that:
The output clock the LPCG cell will not turn back on as expected,
even though a read of the IPG registers in the LPCG indicates that
the clock should be enabled.

The software workaround is to write twice to enable the LPCG clock
output.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Does this need a Fixes tag?

Not sure as it's not code logic issue but a hardware bug.
And 4.19 LTS still have not this driver support.

Looks like there is an errata for this issue, and Ranjani just sent a patch for review internally,

Having errata number in both commit log and code comment is generally
helpful.

Shawn

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