linux-kernel - [PATCH 10/13] ARM: mvebu: add buffer manager nodes to armada-38x.dtsi

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Message-Id: <1448178839-3541-11-git-send-email-mw@semihalf.com>
Date:	Sun, 22 Nov 2015 08:53:56 +0100
From:	Marcin Wojtas <mw@...ihalf.com>
To:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org
Cc:	davem@...emloft.net, linux@....linux.org.uk,
	sebastian.hesselbarth@...il.com, andrew@...n.ch,
	jason@...edaemon.net, thomas.petazzoni@...e-electrons.com,
	gregory.clement@...e-electrons.com, simon.guinot@...uanux.org,
	nadavh@...vell.com, alior@...vell.com, xswang@...vell.com,
	myair@...vell.com, nitroshift@...oo.com, mw@...ihalf.com,
	jaz@...ihalf.com, tn@...ihalf.com
Subject: [PATCH 10/13] ARM: mvebu: add buffer manager nodes to armada-38x.dtsi

Armada 38x network controller supports hardware buffer management (BM).
Since it is now enabled in mvneta driver, appropriate nodes can be added
to armada-38x.dtsi - for the actual common BM unit (bm@...00) and its
internal SRAM (bm-bppi), which is used for indirect access to buffer
pointer ring residing in DRAM.

Pools - ports mapping, bm-bppi entry in 'soc' node's ranges and optional
parameters are supposed to be set in board files.

Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
---
 arch/arm/boot/dts/armada-38x.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
index b7868b2..b9f4ce2 100644
--- a/arch/arm/boot/dts/armada-38x.dtsi
+++ b/arch/arm/boot/dts/armada-38x.dtsi
@@ -539,6 +539,14 @@
 				status = "disabled";
 			};
 
+			bm: bm@...00 {
+				compatible = "marvell,armada-380-neta-bm";
+				reg = <0xc8000 0xac>;
+				clocks = <&gateclk 13>;
+				internal-mem = <&bm_bppi>;
+				status = "disabled";
+			};
+
 			sata@...00 {
 				compatible = "marvell,armada-380-ahci";
 				reg = <0xe0000 0x2000>;
@@ -617,6 +625,16 @@
 			#size-cells = <1>;
 			ranges = <0 MBUS_ID(0x09, 0x15) 0 0x800>;
 		};
+
+		bm_bppi: bm-bppi {
+			compatible = "mmio-sram";
+			reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>;
+			ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			clocks = <&gateclk 13>;
+			status = "disabled";
+		};
 	};
 
 	clocks {
-- 
1.8.3.1

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