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-rw-r--r--target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch53
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch b/target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch
new file mode 100644
index 0000000000..b56de94e3d
--- /dev/null
+++ b/target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch
@@ -0,0 +1,53 @@
+From: Marcin Wojtas <mw@semihalf.com>
+Date: Mon, 14 Mar 2016 09:38:57 +0100
+Subject: [PATCH] ARM: dts: armada-38x: add buffer manager nodes
+
+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@c8000) 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@semihalf.com>
+Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/arch/arm/boot/dts/armada-38x.dtsi
++++ b/arch/arm/boot/dts/armada-38x.dtsi
+@@ -540,6 +540,14 @@
+ status = "disabled";
+ };
+
++ bm: bm@c8000 {
++ compatible = "marvell,armada-380-neta-bm";
++ reg = <0xc8000 0xac>;
++ clocks = <&gateclk 13>;
++ internal-mem = <&bm_bppi>;
++ status = "disabled";
++ };
++
+ sata@e0000 {
+ compatible = "marvell,armada-380-ahci";
+ reg = <0xe0000 0x2000>;
+@@ -618,6 +626,17 @@
+ #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>;
++ no-memory-wc;
++ status = "disabled";
++ };
+ };
+
+ clocks {