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Message-ID: <20251201205309.528858-1-rui.wang@ideasonboard.com>
Date: Mon,  1 Dec 2025 15:50:54 -0500
From: Rui Wang <rui.wang@...asonboard.com>
To: linux-media@...r.kernel.org,
	dafna@...tmail.com,
	laurent.pinchart@...asonboard.com,
	mchehab@...nel.org,
	heiko@...ech.de,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: libcamera-devel@...ts.libcamera.org
Subject: 

Hi,

This series contains a single patch that fixes an issue in the rkisp1
filter mode configuration logic.

The rkisp1_flt_config() function performs a direct write to the
FILT_MODE register before the read/modify/write update. This write
does not include the RKISP1_CIF_ISP_FLT_ENA bit, which clears the
enable bit in hardware. After that, the read/modify/write sequence
cannot restore the original enable state, causing the filter to be
disabled unintentionally.

The patch removes the redundant direct write. The remaining
read/modify/write sequence correctly updates the mode fields while
preserving the existing enable bit.

Please review.

Thanks,
Rui Wang