mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-08-28 16:54:57 -04:00
bbaf8733b8
Add support for devices using SETAASA, such as SPD5118 and SPD5108 attached to DDR5 memory modules that do not support ENTDAA. Follow the guidelines proposed by the MIPI Discovery and Configuration Specification [1] for discovering such devices. SETAASA (Set All Addresses to Static Address) differs from standard I3C address assignment that uses ENTDAA or SETDASA to assign dynamic addresses. Devices using SETAASA assign their pre-defined static addresses as their dynamic addresses during DAA, and it is not mandatory for these devices to implement standard CCC commands like GETPID, GETDCR, or GETBCR. For such devices, it is generally recommended to issue SETHID (specified by JEDEC JESD300) as a prerequisite for SETAASA to stop HID bit flipping. [1] https://www.mipi.org/mipi-disco-for-i3c-download Signed-off-by: Akhil R <akhilrajeev@nvidia.com> Link: https://www.mipi.org/mipi-disco-for-i3c-download Link: https://patch.msgid.link/20260728065955.809445-5-akhilrajeev@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>