Re: [PATCH 1/1] RTC: Ensure msecure is mux'd to be able to set RTC


Koen Kooi
 

Op 16 jun 2011, om 08:07 heeft Jingdong Lu het volgende geschreven:

From: Jingdong Lu <jingdong.lu@...>

commit e2a346a2a054f702fd76f328ff747b9ad9264a4c from git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git
When I do 'git show e2a346a2a054f702fd76f328ff747b9ad9264a4' I get:

commit e2a346a2a054f702fd76f328ff747b9ad9264a4c
Author: Alexander Holler <holler@...>

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Date: Tue Apr 5 15:40:08 2011 +0200

arm: omap3: beagle: Ensure msecure is mux'd to be able to set the RTC

Without msecure beeing high it isn't possible to set (or start)
the RTC.

Tested with a BeagleBoard C4.

Signed-off-by: Alexander Holler <holler@...>
Signed-off-by: Tony Lindgren <tony@...>

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index be71426..d64ed97 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -579,6 +579,9 @@ static void __init omap3_beagle_init(void)
omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
ARRAY_SIZE(omap3beagle_nand_partitions));

+ /* Ensure msecure is mux'd to be able to set the RTC. */
+ omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
+
/* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);


So if you're going to change the author, you'd also need to remove the SOBs.


arm: omap3: beagle: Ensure msecure is mux'd to be able to set the RTC.
"Msecure" signal provides for protection of the RTC register in TPS65950 be
disabling that function via a control signal from the OMAP3530. So ensure
msecure is mux'd to be able to set the RTC.

Tested with a BeagleBoard C4.
Fixes bug [YOCTO #767]

Signed-off-by: Alexander Holler <holler@...>
Signed-off-by: Tony Lindgren <tony@...>
Integrated-by: Jingdong Lu <jingdong.lu@...>
---
arch/arm/mach-omap2/board-omap3beagle.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index af1166b..925c0b3 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -580,6 +580,9 @@ static void __init omap3_beagle_init(void)
usb_ehci_init(&ehci_pdata);
omap3beagle_flash_init();

+ /* Ensure msecure is mux'd to be able to set the RTC. */
+ omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
+
/* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
--
1.7.0.4

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