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From: Claudiu Beznea <claudiu.beznea@kernel.org>
To: wsa+renesas@sang-engineering.com,
	tommaso.merciai.xr@bp.renesas.com, alexandre.belloni@bootlin.com,
	Frank.Li@nxp.com, p.zabel@pengutronix.de
Cc: claudiu.beznea@kernel.org, claudiu.beznea@tuxon.dev,
	linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-renesas-soc@vger.kernel.org,
	Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>,
	stable@vger.kernel.org
Subject: [PATCH 08/17] i3c: renesas: Clean DATBAS register on detach
Date: Fri, 22 May 2026 13:18:06 +0300	[thread overview]
Message-ID: <20260522101815.1722909-9-claudiu.beznea@kernel.org> (raw)
In-Reply-To: <20260522101815.1722909-1-claudiu.beznea@kernel.org>

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

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
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
 drivers/i3c/master/renesas-i3c.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c
index c009d0de6a2b..d32646deb69f 100644
--- a/drivers/i3c/master/renesas-i3c.c
+++ b/drivers/i3c/master/renesas-i3c.c
@@ -922,6 +922,8 @@ 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);
-- 
2.43.0


  parent reply	other threads:[~2026-05-22 10:18 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-22 10:17 [PATCH 00/17] i3c: renesas: Suspend to RAM with power loss and runtime PM Claudiu Beznea
2026-05-22 10:17 ` [PATCH 01/17] i3c: renesas: Check that the transfer is valid before accessing it Claudiu Beznea
2026-05-22 19:02   ` Frank Li
2026-05-22 10:18 ` [PATCH 02/17] i3c: renesas: Use the divider 128 Claudiu Beznea
2026-05-22 19:06   ` Frank Li
2026-05-23  8:14     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 03/17] i3c: renesas: Restore STDBR and EXTBR registers on resume Claudiu Beznea
2026-05-22 19:10   ` Frank Li
2026-05-28  8:29     ` Claudiu Beznea
2026-05-28 19:13       ` Frank Li
2026-05-22 10:18 ` [PATCH 04/17] i3c: renesas: Follow the reset deassert order used in probe Claudiu Beznea
2026-05-22 19:11   ` Frank Li
2026-05-22 10:18 ` [PATCH 05/17] i3c: renesas: Fix re-attach Claudiu Beznea
2026-05-22 19:13   ` Frank Li
2026-05-22 10:18 ` [PATCH 06/17] i3c: renesas: Reset the controller on resume Claudiu Beznea
2026-05-22 19:15   ` Frank Li
2026-05-23 10:24     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 07/17] i3c: renesas: Perform Dynamic Address Assignment " Claudiu Beznea
2026-05-22 19:16   ` Frank Li
2026-05-23 10:26     ` Claudiu Beznea
2026-05-22 10:18 ` Claudiu Beznea [this message]
2026-05-22 19:17   ` [PATCH 08/17] i3c: renesas: Clean DATBAS register on detach Frank Li
2026-05-22 10:18 ` [PATCH 09/17] i3c: renesas: Use reset_control_bulk_{assert, deassert}() Claudiu Beznea
2026-05-22 19:19   ` Frank Li
2026-05-23 10:26     ` Claudiu Beznea
2026-05-22 10:18 ` [PATCH 10/17] i3c: renesas: Return immediately if there is nothing to transfer Claudiu Beznea
2026-05-22 19:20   ` Frank Li
2026-05-22 10:18 ` [PATCH 11/17] i3c: renesas: Follow a unified pattern for transfer and command initialization Claudiu Beznea
2026-05-22 19:21   ` Frank Li
2026-05-22 10:18 ` [PATCH 12/17] i3c: renesas: Drop the explicit memset() call Claudiu Beznea
2026-05-22 19:43   ` Frank Li
2026-05-22 10:18 ` [PATCH 13/17] i3c: renesas: Update HW registers after SW computations are done Claudiu Beznea
2026-05-22 19:48   ` Frank Li
2026-05-22 10:18 ` [PATCH 14/17] i3c: renesas: Organize structures to avoid unnecessary padding Claudiu Beznea
2026-05-22 19:50   ` Frank Li
2026-05-22 10:18 ` [PATCH 15/17] i3c: renesas: Use the "dev_name:irq_name" format for the interrupt name Claudiu Beznea
2026-05-22 19:51   ` Frank Li
2026-05-22 10:18 ` [PATCH 16/17] i3c: renesas: Drop unnecessary tab Claudiu Beznea
2026-05-22 19:52   ` Frank Li
2026-05-22 10:18 ` [PATCH 17/17] i3c: renesas: Add runtime PM support Claudiu Beznea
2026-05-22 20:01   ` Frank Li
2026-05-23 10:23     ` Claudiu Beznea
2026-06-02 11:49       ` Claudiu Beznea

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