linux-kernel - [PATCH 3/4]fsl/powerpc/b4860: Adds DSP cores/clusters and their L2 caches

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Date:	Sat, 19 Sep 2015 23:46:31 +0530
From:	Poonam Aggrwal <poonam.aggrwal@...escale.com>
To:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
	<devicetree-discuss@...ts.ozlabs.org>
CC:	<scottwood@...escale.com>,
	Poonam Aggrwal <poonam.aggrwal@...escale.com>,
	Shaveta Leekha <shaveta@...escale.com>
Subject: [PATCH 3/4]fsl/powerpc/b4860: Adds DSP cores/clusters and their L2 caches

B4860 has 3 DSP clusters, each cluster having 2 DSP cores (SC3900),
and every cluster has a shared L2 cache.

Signed-off-by: Shaveta Leekha <shaveta@...escale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@...escale.com>
---
- based of: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
  branch master 
 arch/powerpc/boot/dts/fsl/b4860si-post.dtsi | 18 +++++++++
 arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi  | 59 +++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)

diff --git a/arch/powerpc/boot/dts/fsl/b4860si-post.dtsi b/arch/powerpc/boot/dts/fsl/b4860si-post.dtsi
index be91803..f6c3b9b 100644
--- a/arch/powerpc/boot/dts/fsl/b4860si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/b4860si-post.dtsi
@@ -263,4 +263,22 @@
 		reg = <0xc20000 0x40000>;
 		next-level-cache = <&cpc>;
 	};
+
+	L2_2: l2-cache-controller@...000 {
+		compatible = "fsl,b4860-l2-cache-controller";
+		reg = <0xc60000 0x1000>;
+		next-level-cache = <&cpc>;
+	};
+
+	L2_3: l2-cache-controller@...000 {
+		compatible = "fsl,b4860-l2-cache-controller";
+		reg = <0xca0000 0x1000>;
+		next-level-cache = <&cpc>;
+	};
+
+	L2_4: l2-cache-controller@...000 {
+		compatible = "fsl,b4860-l2-cache-controller";
+		reg = <0xce0000 0x1000>;
+		next-level-cache = <&cpc>;
+	};
 };
diff --git a/arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi b/arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi
index 6823caa..dbfb2a6 100644
--- a/arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi
+++ b/arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi
@@ -90,4 +90,63 @@
 			fsl,portid-mapping = <0x80000000>;
 		};
 	};
+
+	dsp-clusters {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		
+		dsp-cluster0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "fsl,sc3900-cluster";
+			reg = <0>;
+
+			dsp0: dsp@0 {
+				compatible = "fsl,sc3900";
+				reg = <0>;
+				next-level-cache = <&L2_2>;
+			};
+			dsp1: dsp@1 {
+				compatible = "fsl,sc3900";
+				reg = <1>;
+				next-level-cache = <&L2_2>;
+			};
+		};
+
+		dsp-cluster1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "fsl,sc3900-cluster";
+			reg = <1>;
+
+			dsp2: dsp@2 {
+				compatible = "fsl,sc3900";
+				reg = <2>;
+				next-level-cache = <&L2_3>;
+			};
+			dsp3: dsp@3 {
+				compatible = "fsl,sc3900";
+				reg = <3>;
+				next-level-cache = <&L2_3>;
+			};
+		};
+
+		dsp-cluster2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "fsl,sc3900-cluster";
+			reg = <2>;
+
+			dsp4: dsp@4 {
+				compatible = "fsl,sc3900";
+				reg = <4>;
+				next-level-cache = <&L2_4>;
+			};
+			dsp5: dsp@5 {
+				compatible = "fsl,sc3900";
+				reg = <5>;
+				next-level-cache = <&L2_4>;
+			};
+		};
+	};
 };
-- 
1.9.1

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