From 84f6ab5fedf735a447080e2fd286eff9859cd199 Mon Sep 17 00:00:00 2001 From: Jerome Brunet Date: Tue, 25 Jun 2024 13:54:41 +0200 Subject: arm64: dts: amlogic: g12: bump spdif output drive strength Spdif output currently uses a 0.5mA drive strength by default. While the result depends on how the spdif output is hooked to rest of the system, this is a bit weak and signal quality may be poor. This was reported on the vim3l for example. Increase the drive strength to 3mA, as used for TDM, to be on the safe side. Fixes: 649675db939d ("arm64: dts: meson: g12a: add spdifouts") Signed-off-by: Jerome Brunet Link: https://lore.kernel.org/r/20240625115443.934763-1-jbrunet@baylibre.com Signed-off-by: Neil Armstrong --- arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi index 138fb18c6480..4057ee808a58 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi @@ -987,7 +987,7 @@ mux { groups = "spdif_out_h"; function = "spdif_out"; - drive-strength-microamp = <500>; + drive-strength-microamp = <3000>; bias-disable; }; }; @@ -996,7 +996,7 @@ mux { groups = "spdif_out_a11"; function = "spdif_out"; - drive-strength-microamp = <500>; + drive-strength-microamp = <3000>; bias-disable; }; }; @@ -1005,7 +1005,7 @@ mux { groups = "spdif_out_a13"; function = "spdif_out"; - drive-strength-microamp = <500>; + drive-strength-microamp = <3000>; bias-disable; }; }; @@ -1826,7 +1826,7 @@ mux { groups = "spdif_ao_out"; function = "spdif_ao_out"; - drive-strength-microamp = <500>; + drive-strength-microamp = <3000>; bias-disable; }; }; -- cgit