On 11/24/21 11:35 AM, Andreas Kemnade wrote:
Hi,
On Tue, 23 Nov 2021 07:39:05 -0800
Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
On 11/23/21 4:14 AM, Alistair Francis wrote:
On Tue, Nov 16, 2021 at 9:10 AM Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote:
Hi,
this all creates a lot of question marks...
One of my main question is whether sy7636a = sy7636 (at least the
driver in the kobo vendor kernels does not have the "A" at the end,
whic does not necessarily mean a difference).
https://www.silergy.com/products/panel_pmic
lists only a SY7636ARMC, so chances are good that the letters were just
stripped away by the driver developers. Printing on chip package is
cryptic so it is not that helpful. It is just "BWNBDA"
I don't have a definite answer for you. But I think it's sy7636a
The page you linked to above lists SY7636ARMC as well as SY7627RMC,
SY7570RMC. That makes me think that the RMC is a generic suffix and
this actual IC is the SY7636A.
Almost all chips have an ordering suffix, indicating things like
temperature range or packaging. The datasheet says:
yes, they have. The only question is where it starts. So did you find a
public datasheet which you can chere
I registered an account on the Silergy web site, and I was subsequently
able to download the datasheet. The document has a "confidential"
watermark, so I can not share it. You should be able to register an
account and download it yourself, though.
Ordering Information
SY7636 □(□□)□
| Temperature Code (C)
| Package Code (RM)
| Optional Spec Code (A)
The datasheet otherwise refers to the chip as SY7636A.
so there is no indication of something like this where the A really
makes a difference:
I may be missing it, but I see nothing in the datasheet that would indicate
that or if the "A" has any relevance other than "Optional Spec Code",
and I do not see an explanation for that term either.
Guenter
