linux-kernel - [PATCH 4/4]fsl/powerpc/b4420: Adds DSP cores/clusters and their L2 caches

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Date:	Sat, 19 Sep 2015 23:46:50 +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 4/4]fsl/powerpc/b4420: Adds DSP cores/clusters and their L2 caches

B4420 has 1 DSP cluster, having 2 DSP cores (SC3900), and 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/b4420si-post.dtsi |  6 ++++++
 arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi  | 23 +++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/arch/powerpc/boot/dts/fsl/b4420si-post.dtsi b/arch/powerpc/boot/dts/fsl/b4420si-post.dtsi
index f996cce..02fa374 100644
--- a/arch/powerpc/boot/dts/fsl/b4420si-post.dtsi
+++ b/arch/powerpc/boot/dts/fsl/b4420si-post.dtsi
@@ -94,4 +94,10 @@
 		reg = <0xc20000 0x40000>;
 		next-level-cache = <&cpc>;
 	};
+
+	L2_2: l2-cache-controller@...000 {
+		compatible = "fsl,b4420-l2-cache-controller";
+		reg = <0xc60000 0x40000>;
+		next-level-cache = <&cpc>;
+	};
 };
diff --git a/arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi b/arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi
index 4257a77..900086b 100644
--- a/arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi
+++ b/arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi
@@ -76,4 +76,27 @@
 			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>;
+			};
+		};
+	};
 };
-- 
1.9.1

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