On Thu, Nov 02, 2023 at 05:08:07PM +0800, Delphine CC Chiu wrote:
I have a datasheet for this chip with a "Revision 1.0 (10-25-10)" in the
footer. Reviewed the change against the datasheet.
> Add support for EMC1442 which is compatible with EMC1403.
>
> Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@xxxxxxxxxx>
> ---
> change in v2:
> Revised emc1403 to emc1402
> + case 0x60:
> + strscpy(info->type, "emc1442", I2C_NAME_SIZE);
> + break;
Confirmed against datasheet.
Section 2.2 "Register Set Delta" specifies:
- Product ID | 60h
> static const unsigned short emc1403_address_list[] = {
> - 0x18, 0x1c, 0x29, 0x4c, 0x4d, 0x5c, I2C_CLIENT_END
> + 0x18, 0x1c, 0x29, 0x3c, 0x4c, 0x4d, 0x5c, I2C_CLIENT_END
Confirmed against datasheet.
Section 5.1.2 "SMBus Address and RD/WR Bit" has a table indicating that
a 22k pull-up resistor corresponds to `0011_100?` binary.
> { "emc1422", emc1402 },
> { "emc1423", emc1403 },
> { "emc1424", emc1404 },
> + { "emc1442", emc1402 },
Datasheet section 2.1 is titled "Functional Delta from EMC1412 to
EMC1442", with minimal differences. We map "emc1412" to `emc1402`, so
mapping "emc1442" to the same should be appropriate.
Reviewed-by: Patrick Williams <patrick@xxxxxxxxx>
--
Patrick Williams
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