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authorAndy Yan <andy.yan@rock-chips.com>2025-05-22 10:05:24 +0800
committerHeiko Stuebner <heiko@sntech.de>2025-06-09 11:11:44 +0200
commitaf9feb0b85f92d2972061224839c5fea5ee39f6d (patch)
tree9385eba2ba84730588f36134ffbc53519467db88 /scripts/lib/abi/abi_regex.py
parentaf0f43d5d0d6e486b6a83190000dfa7ad447f825 (diff)
arm64: dts: rockchip: Adjust the HDMI DDC IO driver strength for rk3588
For the RK3588 HDMI controller, the falling edge of DDC SDA and SCL almost coincide and cannot be adjusted by HDMI registrer, resulting in poor compatibility of DDC communication. An improvement of the compatibility of DDC can be done by increasing the driver strength of SCL and decreasing the driver strength of SDA to increase the slope of the falling edge. It should be noted that the maximum driving strength of hdmim0_tx1_scl is only 3, which is different from that of the other IOs. Signed-off-by: Andy Yan <andy.yan@rock-chips.com> Tested-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Link: https://lore.kernel.org/r/20250522020537.1884771-1-andyshrk@163.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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