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Fri, 19 Mar 2021 04:05:39 -0700 (PDT) From: Daniel Lezcano To: heiko@sntech.de Cc: Rob Herring , Johan Jonker , Helen Koike , Shunqian Zheng , Jacob Chen , Chen-Yu Tsai , Markus Reichl , Robin Murphy , Boris Brezillon , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Rockchip SoC support), linux-rockchip@lists.infradead.org (open list:ARM/Rockchip SoC support), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] dt: rockchip: rk3399: Add dynamic power coefficient for GPU Date: Fri, 19 Mar 2021 12:05:09 +0100 Message-Id: <20210319110511.24787-1-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210319_110542_339566_861DE731 X-CRM114-Status: GOOD ( 13.08 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The DTPM framework is looking for upstream SoC candidates to share the power numbers. We can see around different numbers but the one which seems to be consistent with the initial post for the values on the CPUs can be found in the patch https://lore.kernel.org/patchwork/patch/810159/ I don't know the precision of this value but it is better than nothing. Hopefully, one day SoC vendors will be more generous with the power numbers at least for the SoC which are from the previous generation and give the community the opportunity to develop power based frameworks. --- arch/arm64/boot/dts/rockchip/rk3399.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index edbbf35fe19e..1ab1d293d2e9 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi @@ -1933,6 +1933,7 @@ interrupt-names = "job", "mmu", "gpu"; clocks = <&cru ACLK_GPU>; #cooling-cells = <2>; + dynamic-power-coefficient = <977>; power-domains = <&power RK3399_PD_GPU>; status = "disabled"; };