[PATCH 5/7] ppc: mpc85xx: add stashing support

[Renaud Barbier]

The eTSEC 2.0 devices found on the 85xx family of SoCs support stashing
buffer descriptors in the L2 cache. This updates the device tree fixup
for these devices to ensure that the stashing related properties used
by Linux are initialised correctly.

Signed-off-by: Renaud Barbier <renaud.barbier at ge.com>
---
 arch/ppc/mach-mpc85xx/fdt.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/ppc/mach-mpc85xx/fdt.c b/arch/ppc/mach-mpc85xx/fdt.c
index b1da144..1a2d780 100644
--- a/arch/ppc/mach-mpc85xx/fdt.c
+++ b/arch/ppc/mach-mpc85xx/fdt.c
@@ -54,6 +54,14 @@ static void fdt_add_enet_stashing(void *fdt)
 		of_property_write_u32(node, "rx-stash-idx", 0);
 		node = of_find_compatible_node(node, NULL, "gianfar");
 	}
+
+	node = of_find_compatible_node(fdt, NULL, "fsl,etsec2");
+	while (node) {
+		of_set_property(node, "bd-stash", NULL, 0, 1);
+		of_property_write_u32(node, "rx-stash-len", 96);
+		of_property_write_u32(node, "rx-stash-idx", 0);
+		node = of_find_compatible_node(node, NULL, "fsl,etsec2");
+	}
 }
 
 static int fdt_stdout_setup(struct device_node *blob)
-- 
1.8.4.2