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mpc85xx: add mpic timer clock frequency to avoid boot log warning

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MPIC timers are enabled in the config, however a devicetree clock setting
is missing causing the following error:
/soc@ffe00000/timer@41100: cannot get timer frequency.
/soc@ffe00000/timer@42100: cannot get timer frequency.

This patch adds the missing clock and avoids the error.
It's a functional copy of this code
do_fixup_by_compat_u32(blob, "fsl,mpic",
        "clock-frequency", get_bus_freq(0), 1);
in arch/powerpc/cpu/mpc85xx/fdt.c in the u-boot code.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>

SVN-Revision: 44501
This commit is contained in:
John Crispin 2015-02-22 08:28:48 +00:00
parent 850b3169ed
commit 2f544d56d0
1 changed files with 48 additions and 0 deletions
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48
target/linux/mpc85xx/patches-3.18/142-add-mpic-timer-clock-frequency.patch Normal file
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@ -0,0 +1,48 @@
From 1c20a5420c2602e2438209f34a633eae377eda5e Mon Sep 17 00:00:00 2001
From: Heiner Kallweit <hkallweit1@gmail.com>
Date: Thu, 19 Feb 2015 23:43:32 +0100
Subject: [PATCH] mpc85xx: add mpic timer clock frequency
MPIC timers are enabled in the config, however a devicetree clock setting
is missing causing the following error:
/soc@ffe00000/timer@41100: cannot get timer frequency.
/soc@ffe00000/timer@42100: cannot get timer frequency.
This patch adds the missing clock and avoids the error.
It's a functional copy of this code
do_fixup_by_compat_u32(blob, "fsl,mpic",
"clock-frequency", get_bus_freq(0), 1);
in arch/powerpc/cpu/mpc85xx/fdt.c in the u-boot code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
arch/powerpc/boot/cuboot-tl-wdr4900-v1.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/cuboot-tl-wdr4900-v1.c b/arch/powerpc/boot/cuboot-tl-wdr4900-v1.c
index 095e777..17459ef 100644
--- a/arch/powerpc/boot/cuboot-tl-wdr4900-v1.c
+++ b/arch/powerpc/boot/cuboot-tl-wdr4900-v1.c
@@ -119,7 +119,7 @@ static void process_boot_dtb(void *boot_dtb)
static void platform_fixups(void)
{
- void *soc;
+ void *soc, *mpic;
dt_fixup_memory(0, mem_size);
@@ -144,6 +144,10 @@ static void platform_fixups(void)
sizeof(bus_freq));
}
}
+
+ mpic = find_node_by_compatible(NULL, "fsl,mpic");
+ if (mpic)
+ setprop(mpic, "clock-frequency", &bus_freq, sizeof(bus_freq));
}
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
--
2.3.0