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[U-Boot,v2,3/4] arm: koelsch: Disable TMU0 before OS boots

Message ID 1389144744-6578-3-git-send-email-nobuhiro.iwamatsu.yj@renesas.com
State Accepted
Delegated to: Nobuhiro Iwamatsu
Headers show

Commit Message

Nobuhiro Iwamatsu Jan. 8, 2014, 1:32 a.m. UTC 
On U-boot uses TMU0 as timer, but TMU0 does not use on linux kernel
and other.
This disables TMU0 at the request of from kernel user.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
 v2: no changes.

 board/renesas/koelsch/koelsch.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/board/renesas/koelsch/koelsch.c b/board/renesas/koelsch/koelsch.c
index 89f5c91..32d3b58 100644
--- a/board/renesas/koelsch/koelsch.c
+++ b/board/renesas/koelsch/koelsch.c
@@ -253,6 +253,12 @@  int board_early_init_f(void)
 	return 0;
 }
 
+void arch_preboot_os(void)
+{
+	/* Disable TMU0 */
+	mstp_setbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
+}
+
 /* LSI pin pull-up control */
 #define PUPR5 0xe6060114
 #define PUPR5_ETH 0x3FFC0000