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arm64: dts: allwinner: a64: Run GPU at 432 MHz

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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.erico@gmail.com>
Signed-off-by: Frank Oltmanns <frank@oltmanns.dev>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20240310-pinephone-pll-fixes-v4-5-46fc80c83637@oltmanns.dev
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
This commit is contained in:
Frank Oltmanns 2024-03-10 14:21:15 +01:00 committed by Jernej Skrabec
parent 0f47ef3ff1
commit 1428f0c19f
1 changed files with 0 additions and 8 deletions
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8
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
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@ -107,14 +107,6 @@
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>;
};