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[PATCH] hw/ppc: e500: Add missing <ranges> in the eTSEC node
From: |
Bin Meng |
Subject: |
[PATCH] hw/ppc: e500: Add missing <ranges> in the eTSEC node |
Date: |
Wed, 24 Feb 2021 17:28:39 +0800 |
From: Bin Meng <bin.meng@windriver.com>
The eTSEC node should provide an empty <ranges> property in the
eTSEC node, otherwise of_translate_address() in the Linux kernel
fails to get the eTSEC register base, reporting:
OF: ** translation for device /platform@f00000000/ethernet@0/queue-group **
OF: bus is default (na=1, ns=1) on /platform@f00000000/ethernet@0
OF: translating address: 00000000
OF: parent bus is default (na=1, ns=1) on /platform@f00000000
OF: no ranges; cannot translate
Per devicetree spec v0.3 [1] chapter 2.3.8:
If the property is not present in a bus node, it is assumed that
no mapping exists between children of the node and the parent
address space.
This is why of_translate_address() aborts the address translation.
Apparently U-Boot devicetree parser seems to be tolerant with
missing <ranges> as this was not noticed when testing with U-Boot.
The empty <ranges> property is present in all kernel shipped dtsi
files for eTSEC, Let's add it to conform with the spec.
[1]
https://github.com/devicetree-org/devicetree-specification/releases/download/v0.3/devicetree-specification-v0.3.pdf
Fixes: fdfb7f2cdb2d ("e500: Add support for eTSEC in device tree")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
---
hw/ppc/e500.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index c84a021..79467ac 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -231,6 +231,7 @@ static int create_devtree_etsec(SysBusDevice *sbdev,
PlatformDevtreeData *data)
assert(irq2 >= 0);
qemu_fdt_add_subnode(fdt, node);
+ qemu_fdt_setprop(fdt, node, "ranges", NULL, 0);
qemu_fdt_setprop_string(fdt, node, "device_type", "network");
qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,etsec2");
qemu_fdt_setprop_string(fdt, node, "model", "eTSEC");
--
2.7.4
- [PATCH] hw/ppc: e500: Add missing <ranges> in the eTSEC node,
Bin Meng <=