diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2025-09-13 18:16:00 +0800 |
|---|---|---|
| committer | Chen-Yu Tsai <wens@csie.org> | 2025-09-15 00:03:02 +0800 |
| commit | e6fad4960fc67b7225255b10b080765b451a7bc7 (patch) | |
| tree | 2f19327ddba0bb02dc6f8e904d3888f6cb341acb | |
| parent | caffed0800ef4dd29cc29ee17a89d015e867e03a (diff) | |
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 <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20250913101600.3932762-1-wens@kernel.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
| -rw-r--r-- | arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi index d00da1cd744e..7b36c47a3a13 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 { |