Thread (24 messages) 24 messages, 3 authors, 2021-11-26

Re: [RFC 12/13] arm64: dts: mt8192: Add apu tinysys

From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Date: 2021-10-26 15:18:46
Also in: dri-devel, linux-arm-kernel, linux-media, lkml

Il 23/10/21 13:14, Flora Fu ha scritto:
quoted hunk ↗ jump to hunk
Add node for APU tinysys.

Signed-off-by: Flora Fu <redacted>
---
  arch/arm64/boot/dts/mediatek/mt8192.dtsi | 36 ++++++++++++++++++++++++
  1 file changed, 36 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
index c505c6926839..8108084a3f6f 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
@@ -925,6 +925,42 @@
  			#iommu-cells = <1>;
  		};
  
+		apusys_rv@19001000 {
+			compatible = "mediatek,mt8192-apusys-rv";
+			reg = <0 0x19000000 0 0x1000>,
+			      <0 0x19001000 0 0x1000>,
+			      <0 0x19002000 0 0x10>;
+			reg-names = "apu_mbox",
+				    "md32_sysctrl",
+				    "apu_wdt";
+			mediatek,apusys-power = <&apusys_power>;
As said on the IOMMU commit, I think that apusys-power can be passed as a
power domain here as well... also keeping in mind that the apuspm power
domain is being used in both the IOMMU and in apusys-power already, so you
could even pass only the apusys-power pd here, because apuspm would be
already being turned on by the former...

...unless there's any possibility to have some functionality with apuspm up
but apusys-power down? From how it looks right now, that's not a thing.
+			power-domains = <&apuspm 0>;
+			iommus = <&iommu_apu IOMMU_PORT_APU_DATA>;
+			interrupts = <GIC_SPI 393 IRQ_TYPE_LEVEL_HIGH 0>,
+				     <GIC_SPI 404 IRQ_TYPE_LEVEL_HIGH 0>;
+			interrupt-names = "apu_wdt",
+					  "mbox0_irq";
+			apu_ctrl {
+				compatible = "mediatek,apu-ctrl-rpmsg";
+				mtk,rpmsg-name = "apu-ctrl-rpmsg";
This is supposed to be "mediatek,rpmsg-name" instead... or it won't work.
+			};
+
+			apu_pwr_tx {
+				compatible = "mediatek,apupwr-tx-rpmsg";
+				mtk,rpmsg-name = "apupwr-tx-rpmsg";
+			};
+
+			apu_pwr_rx {
+				compatible = "mediatek,apupwr-rx-rpmsg";
+				mtk,rpmsg-name = "apupwr-rx-rpmsg";
+			};
+
+			apu_mdw_rpmsg {
+				compatible = "mediatek,apu-mdw-rpmsg";
+				mtk,rpmsg-name = "apu-mdw-rpmsg";
+			};
+		};
+
  		apu_conn: apu_conn@19020000 {
  			compatible = "mediatek,mt8192-apu-conn", "syscon";
  			reg = <0 0x19020000 0 0x1000>;
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