target/linux/mvebu/patches-4.4/051-ARM-dts-armada-38x-add-buffer-manager-nodes.patch

   1 From: Marcin Wojtas <mw@semihalf.com>
   2 Date: Mon, 14 Mar 2016 09:38:57 +0100
   3 Subject: [PATCH] ARM: dts: armada-38x: add buffer manager nodes
   4
   5 Armada 38x network controller supports hardware buffer management (BM).
   6 Since it is now enabled in mvneta driver, appropriate nodes can be added
   7 to armada-38x.dtsi - for the actual common BM unit (bm@c8000) and its
   8 internal SRAM (bm-bppi), which is used for indirect access to buffer
   9 pointer ring residing in DRAM.
  10
  11 Pools - ports mapping, bm-bppi entry in 'soc' node's ranges and optional
  12 parameters are supposed to be set in board files.
  13
  14 Signed-off-by: Marcin Wojtas <mw@semihalf.com>
  15 Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
  16 Signed-off-by: David S. Miller <davem@davemloft.net>
  17 ---
  18
  19 --- a/arch/arm/boot/dts/armada-38x.dtsi
  20 +++ b/arch/arm/boot/dts/armada-38x.dtsi
  21 @@ -540,6 +540,14 @@
  22                                 status = "disabled";
  23                         };
  24
  25 +                       bm: bm@c8000 {
  26 +                               compatible = "marvell,armada-380-neta-bm";
  27 +                               reg = <0xc8000 0xac>;
  28 +                               clocks = <&gateclk 13>;
  29 +                               internal-mem = <&bm_bppi>;
  30 +                               status = "disabled";
  31 +                       };
  32 +
  33                         sata@e0000 {
  34                                 compatible = "marvell,armada-380-ahci";
  35                                 reg = <0xe0000 0x2000>;
  36 @@ -618,6 +626,17 @@
  37                         #size-cells = <1>;
  38                         ranges = <0 MBUS_ID(0x09, 0x15) 0 0x800>;
  39                 };
  40 +
  41 +               bm_bppi: bm-bppi {
  42 +                       compatible = "mmio-sram";
  43 +                       reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>;
  44 +                       ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>;
  45 +                       #address-cells = <1>;
  46 +                       #size-cells = <1>;
  47 +                       clocks = <&gateclk 13>;
  48 +                       no-memory-wc;
  49 +                       status = "disabled";
  50 +               };
  51         };
  52
  53         clocks {