[U-Boot] [PATCH] MPC8260: fixup device tree by property instead of path

[Wolfgang Denk]

cpu/mpc8260/cpu.c used to use do_fixup_by_path_u32() to update the
clock frequencies in the device tree, using a CPU path
"/cpus/OF_CPU", with OF_CPU beind defined in the board config file.

However, this does not work when one board config file (here:
MPC8260ADS.h) is intended to be used for several diffrent CPUs and
therefor contains a generic definition like "cpu at 0", as the device
trees that will then be loaded will contain specific names like
"PowerPC,8272 at 0".

We switch to using do_fixup_by_prop_u32() instead, so we can search
for device_type="cpu", as it is done in other architectures, too.

Signed-off-by: Wolfgang Denk <wd at denx.de>
Cc: Heiko Schicher <hs at denx.de>
---

Heiko, could you please test if this works with mgcoge, too?

 cpu/mpc8260/cpu.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/cpu/mpc8260/cpu.c b/cpu/mpc8260/cpu.c
index d4622ca..17e6248 100644
--- a/cpu/mpc8260/cpu.c
+++ b/cpu/mpc8260/cpu.c
@@ -304,8 +304,6 @@ void watchdog_reset (void)
 #if defined(CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
 void ft_cpu_setup (void *blob, bd_t *bd)
 {
-	char * cpu_path = "/cpus/" OF_CPU;
-
 #if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) ||\
     defined(CONFIG_HAS_ETH2) || defined(CONFIG_HAS_ETH3)
 	fdt_fixup_ethernet(blob);
@@ -314,9 +312,12 @@ void ft_cpu_setup (void *blob, bd_t *bd)
 	do_fixup_by_compat_u32(blob, "fsl,cpm2-brg",
 			       "clock-frequency", bd->bi_brgfreq, 1);
 
-	do_fixup_by_path_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
-	do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
-	do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
+	do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
+		"bus-frequency", bd->bi_busfreq, 1);
+	do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
+		"timebase-frequency", OF_TBCLK, 1);
+	do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
+		"clock-frequency", bd->bi_intfreq, 1);
 }
 #endif /* CONFIG_OF_LIBFDT */
 
-- 
1.6.0.6