From: Robby Cai <robby.cai@nxp.com>
To: p.zabel@pengutronix.de, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, Frank.Li@nxp.com, s.hauer@pengutronix.de,
festevam@gmail.com
Cc: devicetree@vger.kernel.org, kernel@pengutronix.de,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, aisheng.dong@nxp.com
Subject: [PATCH 0/2] Fix active-low handling of MIPI CSI resets on i.MX8MQ
Date: Tue, 31 Mar 2026 18:13:29 +0800 [thread overview]
Message-ID: <20260331101331.1405588-1-robby.cai@nxp.com> (raw)
Hi all,
This series updates the Device Tree bindings and reset controller driver
to correctly reflect the active-low polarity of the MIPI CSI reset lines
on i.MX8MQ.
The MIPI CSI reset signals are active-low, but the original reset
identifiers and driver implementation did not clearly indicate or handle
this polarity. Patch 1 updates the DT binding header to add *_RESET_N
variants for the MIPI CSI reset definitions, while keeping the old names
temporarily for DT ABI compatibility. Patch 2 updates the imx7 reset
controller driver to correctly treat these resets as active-low.
Thanks,
Robby
Robby Cai (2):
dt-bindings: reset: imx8mq: Add _N suffix to
IMX8MQ_RESET_MIPI_CSI*_RESET
reset: imx7: Fix handling of MIPI CSI resets on i.MX8MQ
drivers/reset/reset-imx7.c | 18 ++++++++++++------
include/dt-bindings/reset/imx8mq-reset.h | 18 ++++++++++++------
2 files changed, 24 insertions(+), 12 deletions(-)
--
2.37.1
next reply other threads:[~2026-03-31 10:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-31 10:13 Robby Cai [this message]
2026-03-31 10:13 ` [PATCH 1/2] dt-bindings: reset: imx8mq: Add _N suffix to IMX8MQ_RESET_MIPI_CSI*_RESET Robby Cai
2026-03-31 12:45 ` Philipp Zabel
2026-04-01 7:41 ` Krzysztof Kozlowski
2026-03-31 10:13 ` [PATCH 2/2] reset: imx7: Fix handling of MIPI CSI resets on i.MX8MQ Robby Cai
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