diff options
| author | Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> | 2026-07-13 16:05:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-07 17:37:24 +0200 |
| commit | 7ea5b0ca2f39c8d5ffda3dd7d39526861a729b34 (patch) | |
| tree | 972dfd2333442ae656f60b257b83ad63fc0d4f33 | |
| parent | ec631aff93261c6d031f953549802322032f2aba (diff) | |
| download | linux-stable-7ea5b0ca2f39c8d5ffda3dd7d39526861a729b34.tar.gz linux-stable-7ea5b0ca2f39c8d5ffda3dd7d39526861a729b34.zip | |
i3c: renesas: Clean DATBAS register on detach
commit 797ed83c0cd495be4b345750c59e0363bf4d6207 upstream.
The controller uses DATBAS registers on TX/RX logic. Clean the DATBAS
register for the detached I3C device to avoid issues.
Fixes: d028219a9f14 ("i3c: master: Add basic driver for the Renesas I3C controller")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260713130545.568657-8-claudiu.beznea+renesas@tuxon.dev
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/i3c/master/renesas-i3c.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c index 1aa245c6886a..9439295ee30f 100644 --- a/drivers/i3c/master/renesas-i3c.c +++ b/drivers/i3c/master/renesas-i3c.c @@ -924,6 +924,8 @@ static void renesas_i3c_detach_i3c_dev(struct i3c_dev_desc *dev) struct i3c_master_controller *m = i3c_dev_get_master(dev); struct renesas_i3c *i3c = to_renesas_i3c(m); + renesas_writel(i3c->regs, DATBAS(data->index), 0); + i3c_dev_set_master_data(dev, NULL); i3c->addrs[data->index] = 0; i3c->free_pos |= BIT(data->index); |