Re: [PATCH v3 00/13] Support ACPI and SETAASA device discovery

[Akhil R <akhilrajeev@nvidia.com>]

On Sun, 14 Jun 2026 22:56:06 +0200, Alexandre Belloni wrote:
> On 23/04/2026 14:26:59+0530, Akhil R wrote:
>> This patch series adds SETAASA device discovery to the I3C subsystem,
>> enabling support for SPD5118 temperature sensors found on DDR5 memory
>> modules. The changes also add ACPI support for all existing DAA
>> methods like SETDASA, SETNEWDA as well as I2C devices on I3C bus.
>> 
>> SPD5118 and similar devices on DDR5 memory modules differ from typical
>> I3C devices in their initialization. They use SETAASA broadcast CCC
>> instead of ENTDAA for address assignment, and per JEDEC specification,
>> are not required to have a Provisioned ID or implement standard device
>> information CCC commands (GETPID, GETDCR, GETBCR).
>> 
>> The series enables to describe all I3C and I2C devices on both Device
>> Tree and the ACPI table, using unified device property APIs throughout
>> the I3C core and the Synopsys DesignWare I3C master driver.
>> 
>> Please note that the series modifies drivers across multiple subsystems,
>> like Device Tree bindings, ACPI, I3C and HWMON.
>> 
>> v2->v3:
>>   * Fix maximum value and indent bit list for mipi-i3c-static-method.
>>   * Move I3C_ADDR_METHOD_* macros to dt-bindings header.
>>   * Drop ACPICA commit IDs, keep only the Link: tags.
>>   * Revert the change which proceeds to register other devices if SETAASA
>>     is not supported so that it aligns with the rest of the driver and to
>>     avoid the issues pointed by Sashiko.
>>   * Rework multiple commit messages.
>> 
>> v1->v2:
>>   * Added patch to remove 16-bit addressing support for SPD5118
>>   * Guard ACPI calls with #ifdef CONFIG_ACPI
>>   * Remove CONFIG_OF guard for of_alias_get_highest_id()
>>   * Mask mipi-i3c-static-method in the driver to select only valid values.
>>   * Proceed to register other devices if SETAASA is not supported.
>>   * Update commit message and links in the description of multiple commits.
>> 
>> 
>> Akhil R (13):
>>   dt-bindings: i3c: Add mipi-i3c-static-method to support SETAASA
>>   ACPICA: Read LVR from the I2C resource descriptor
>>   i3c: master: Use unified device property interface
>>   i3c: master: Support ACPI enumeration of child devices
>>   i3c: master: Add support for devices using SETAASA
>>   i3c: master: Add support for devices without PID
>>   i3c: master: match I3C device through DT and ACPI
>>   i3c: dw-i3c-master: Add SETAASA as supported CCC
>>   i3c: dw-i3c-master: Add a quirk to skip clock and reset
>>   i3c: dw-i3c-master: Add ACPI ID for Tegra410
>>   hwmon: spd5118: Remove 16-bit addressing
>>   hwmon: spd5118: Add I3C support
>>   arm64: defconfig: Enable I3C and SPD5118 hwmon
>> 
> 
> I'd really like to apply this but I would have preferred having an
> actual ack from Rob on patch 1. Also, you are going to have to rebase on
> the current i3c-next. Can you do this?

Definitely. I had been addressing the comments from Rob and Saashiko, but
got hooked up into somethings else in the last few weeks. I will send v4
soon. Thanks for reaching out.

Best Regards,
Akhil