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i3c: master: match I3C device through DT and ACPI

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SETAASA-based devices cannot always be identified by PID or DCR; the
standard I3C id_table matching may not be applicable. Allow such devices to
match through Device Tree or ACPI.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Link: https://patch.msgid.link/20260728065955.809445-7-akhilrajeev@nvidia.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Akhil R 2026-07-28 06:59:48 +00:00 committed by Alexandre Belloni
parent a1dd42fb82
commit 3456baa211
1 changed files with 19 additions and 1 deletions
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20
drivers/i3c/master.c
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@ -19,6 +19,7 @@
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/slab.h>
@ -345,15 +346,32 @@ static int i3c_device_match(struct device *dev, const struct device_driver *drv)
{
struct i3c_device *i3cdev;
const struct i3c_driver *i3cdrv;
u8 static_addr_method = 0;
if (dev->type != &i3c_device_type)
return 0;
i3cdev = dev_to_i3cdev(dev);
i3cdrv = drv_to_i3cdrv(drv);
if (i3c_device_match_id(i3cdev, i3cdrv->id_table))
if (i3cdev->desc && i3cdev->desc->boardinfo)
static_addr_method = i3cdev->desc->boardinfo->static_addr_method;
/*
* SETAASA-based devices need not always have a matching ID since
* it is not mandatory for such devices to implement deviceinfo
* CCC commands. Allow them to register through DT or ACPI.
*/
if (i3cdrv->id_table && i3c_device_match_id(i3cdev, i3cdrv->id_table))
return 1;
if (static_addr_method & I3C_ADDR_METHOD_SETAASA) {
if (of_driver_match_device(dev, drv))
return 1;
if (acpi_driver_match_device(dev, drv))
return 1;
}
return 0;
}