From 2e1fae80023a38ea03dfca3eab65b3b46617ef3b Mon Sep 17 00:00:00 2001 From: Dragan Simic Date: Sun, 30 Jun 2024 18:00:40 +0200 Subject: arm64: dts: rockchip: Add GPU OPP voltage ranges to RK356x SoC dtsi Add support for voltage ranges to the GPU OPPs defined in the SoC dtsi for Rockchip RK356x. This is, for example, useful for RK356x-based boards that are designed to use the same power supply for the GPU and NPU portions of the SoC, which is described further in the following documents: - Rockchip RK3566 Hardware Design Guide, version 1.1.0, page 37 - Rockchip RK3568 Hardware Design Guide, version 1.2, page 78 The values for the exact GPU OPP voltages and the lower limits for the GPU OPP voltage ranges differ from the values found in the vendor kernel source (cf. downstream commit f8b9431ee38e ("arm64: dts: rockchip: rk3568: support adjust opp-table by otp")), [1][2] and present the exact GPU OPP voltage values that have served us well so far. [1] https://github.com/rockchip-linux/kernel/commit/f8b9431ee38ed561650be7092ab93f564598daa9 [2] https://raw.githubusercontent.com/rockchip-linux/kernel/f8b9431ee38ed561650be7092ab93f564598daa9/arch/arm64/boot/dts/rockchip/rk3568.dtsi Suggested-by: Diederik de Haas Helped-by: Jonas Karlman Signed-off-by: Dragan Simic Link: https://lore.kernel.org/r/7e9ba70fd54a21d6f1f267df11e0acabff8d24e0.1719763100.git.dsimic@manjaro.org Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk356x.dtsi | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'arch/arm64/boot') diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi index 3e2a8bfcafea..710291940856 100644 --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi @@ -195,32 +195,32 @@ opp-200000000 { opp-hz = /bits/ 64 <200000000>; - opp-microvolt = <825000>; + opp-microvolt = <825000 825000 1000000>; }; opp-300000000 { opp-hz = /bits/ 64 <300000000>; - opp-microvolt = <825000>; + opp-microvolt = <825000 825000 1000000>; }; opp-400000000 { opp-hz = /bits/ 64 <400000000>; - opp-microvolt = <825000>; + opp-microvolt = <825000 825000 1000000>; }; opp-600000000 { opp-hz = /bits/ 64 <600000000>; - opp-microvolt = <825000>; + opp-microvolt = <825000 825000 1000000>; }; opp-700000000 { opp-hz = /bits/ 64 <700000000>; - opp-microvolt = <900000>; + opp-microvolt = <900000 900000 1000000>; }; opp-800000000 { opp-hz = /bits/ 64 <800000000>; - opp-microvolt = <1000000>; + opp-microvolt = <1000000 1000000 1000000>; }; }; -- cgit v1.2.3