Re: [U-Boot, 3/3] pmic: allow dump command for non contiguous register maps

On Tue, Jan 14, 2020 at 03:56:18PM +0000, Ian Ray wrote:

From: Martin Fuzzey martin.fuzzey@flowbird.group

Some PMICs (such as the DA9063) have non-contiguous register maps. Attempting to read the non implemented registers returns an error rather than a dummy value which causes 'pmic dump' to terminate prematurely.

Fix this by allowing the PMIC driver to return -ENODATA for such registers, which will then be displayed as '--' by pmic dump.

Use a single error code rather than any error code so that we can distinguish between a hardware failure reading the PMIC and a non implemented register known to the driver.

Signed-off-by: Martin Fuzzey martin.fuzzey@flowbird.group

Applied to u-boot/master, thanks!