linux-kernel - [PATCH v2] arm64: dts: amlogic: meson-g12-common: Set the rates of the clocks for the NPU

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Date:   Tue, 14 Nov 2023 16:48:43 +0100
From:   Tomeu Vizoso <tomeu@...euvizoso.net>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     Tomeu Vizoso <tomeu@...euvizoso.net>,
        Lucas Stach <l.stach@...gutronix.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] arm64: dts: amlogic: meson-g12-common: Set the rates of the clocks for the NPU

Otherwise they are left at 24MHz and the NPU runs very slowly.

Signed-off-by: Tomeu Vizoso <tomeu@...euvizoso.net>
Suggested-by: Lucas Stach <l.stach@...gutronix.de>
Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>

---

v2: Fix subject (Jerome Brunet)
---
 arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
index ff68b911b729..9d5eab6595d0 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi
@@ -2502,6 +2502,9 @@ npu: npu@...00000 {
 		clocks = <&clkc CLKID_NNA_CORE_CLK>,
 			 <&clkc CLKID_NNA_AXI_CLK>;
 		clock-names = "core", "bus";
+		assigned-clocks = <&clkc CLKID_NNA_CORE_CLK>,
+				  <&clkc CLKID_NNA_AXI_CLK>;
+		assigned-clock-rates = <800000000>, <800000000>;
 		resets = <&reset RESET_NNA>;
 		status = "disabled";
 	};
-- 
2.41.0