4 Aug
2025
4 Aug
'25
12:08 p.m.
Hi,
On 4-Aug-25 10:57 AM, Andy Shevchenko wrote:
On Mon, Aug 4, 2025 at 10:51 AM Hans de Goede hansg@kernel.org wrote:
On 4-Aug-25 10:47 AM, Andy Shevchenko wrote:
On Mon, Aug 4, 2025 at 10:34 AM Hans de Goede hansg@kernel.org wrote:
...
/* Reading multiple registers at once is not supported */.use_single_read = true,By HW or by problem in regmap as being suggested here: https://lore.kernel.org/linux-gpio/CALNFmy1ZRqHz6_DD_2qamm-iLQ51AOFQH=ahCWRN... ?
This is a hw limitation. I tried with i2ctransfer to directly access the chip and it returns invalid values (1) after the first byte read.
- I don't remember if it was 0, 0xff or repeating
of the first byte. But it definitely did not work.
Perhaps elaborate the above in the comment, by at least putting keyword HW there?
Ok, I've just send out a v2 clarifying the comment.
Regards,
Hans