Re: [PATCH 10/13] ARM: mvebu: add buffer manager nodes to armada-38x.dtsi
From: Sergei Shtylyov <hidden>
Date: 2015-11-22 09:41:44
Also in:
linux-arm-kernel, lkml
Hello. On 11/22/2015 10:53 AM, Marcin Wojtas wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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@c8000 {
The ePAPR standard tells us to give generic names to the device nodes,
hence this should be named "buffer-manager" (?).
[...]quoted hunk ↗ jump to hunk
@@ -617,6 +625,16 @@ #size-cells = <1>; ranges = <0 MBUS_ID(0x09, 0x15) 0 0x800>; }; + + bm_bppi: bm-bppi {
And this one "memory" (?).
[...]
MBR, Sergei