The Allwinner A64's GPU has currently three operating points. However, the BSP runs the GPU fixed at 432 MHz. In addition, at least one of the devices using that SoC - the pinephone - shows unstabilities (see link) that can be circumvented by running the GPU at a fixed rate.
Therefore, remove the other two operating points from the GPU OPP table, so that the GPU runs at a fixed rate of 432 MHz. Link: https://gitlab.com/postmarketOS/pmaports/-/issues/805 Acked-by: Erico Nunes <nunes.er...@gmail.com> Signed-off-by: Frank Oltmanns <fr...@oltmanns.dev> --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 8 -------- 1 file changed, 8 deletions(-) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 57ac18738c99..c810380aab6d 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -107,14 +107,6 @@ de: display-engine { gpu_opp_table: opp-table-gpu { compatible = "operating-points-v2"; - opp-120000000 { - opp-hz = /bits/ 64 <120000000>; - }; - - opp-312000000 { - opp-hz = /bits/ 64 <312000000>; - }; - opp-432000000 { opp-hz = /bits/ 64 <432000000>; }; -- 2.44.0
