From e6fad4960fc67b7225255b10b080765b451a7bc7 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Sat, 13 Sep 2025 18:16:00 +0800 Subject: [PATCH] arm64: dts: sun55i: a523: Assign standard clock rates to PRCM bus clocks At least in the initial version of U-boot support landed upstream, the PRCM bus clocks were not configured, and left at their reset default 24 MHz clock rate. This is quite slow for the peripherals on them. The recommended rates from the manual are: - AHBS: 200 MHz - APBS0: 100 MHz - APBS1: 24 MHz Since 24 MHz is the hardware default, just assign rates for the first two. Reviewed-by: Jernej Skrabec Link: https://patch.msgid.link/20250913101600.3932762-1-wens@kernel.org Signed-off-by: Chen-Yu Tsai --- arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi index d00da1cd744e9..7b36c47a3a139 100644 --- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi @@ -626,6 +626,8 @@ "pll-audio"; #clock-cells = <1>; #reset-cells = <1>; + assigned-clocks = <&r_ccu CLK_R_AHB>, <&r_ccu CLK_R_APB0>; + assigned-clock-rates = <200000000>, <100000000>; }; nmi_intc: interrupt-controller@7010320 { -- 2.47.3