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i3c: master: svc: Flush FIFO before sending Dynamic Address Assignment(DAA)

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[ Upstream commit a892ee4cf22a50e1d6988d0464a9a421f3e5db2f ]

Ensure the FIFO is empty before issuing the DAA command to prevent
incorrect command data from being sent. Align with other data transfers,
such as svc_i3c_master_start_xfer_locked(), which flushes the FIFO before
sending a command.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20250129162250.3629189-1-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Frank Li
2025-01-29 11:22:50 -05:00
committed by Greg Kroah-Hartman
parent 398351dcdb
commit 671fea645a
1 changed files with 2 additions and 0 deletions
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drivers/i3c/master/svc-i3c-master.c
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@@ -841,6 +841,8 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
u32 reg; u32 reg;
int ret, i; int ret, i;
svc_i3c_master_flush_fifo(master);
while (true) { while (true) {
/* Enter/proceed with DAA */ /* Enter/proceed with DAA */
writel(SVC_I3C_MCTRL_REQUEST_PROC_DAA | writel(SVC_I3C_MCTRL_REQUEST_PROC_DAA |