diff mbox

ARM: AM33xx: add support for reboot

Message ID 1351448275-23509-1-git-send-email-zonque@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Daniel Mack Oct. 28, 2012, 6:17 p.m. UTC
This patch adds the ability to reboot am33xx-based systems.

Signed-off-by: Daniel Mack <zonque@gmail.com>
---
 arch/arm/mach-omap2/board-generic.c | 1 +
 arch/arm/mach-omap2/prcm.c          | 6 ++++++
 2 files changed, 7 insertions(+)

Comments

Daniel Mack Oct. 28, 2012, 7:19 p.m. UTC | #1
[Cc Tony]

On 28.10.2012 19:17, Daniel Mack wrote:
> This patch adds the ability to reboot am33xx-based systems.

Sorry, I lacked to investigate on the attribution here. According to
"git blame" of a BSP kernel I got these lines from, the original author
is Afzal Mohammed.

Afzal, are you planning to resubmit this for mainline? My version can of
course be disposed then.


Thanks,
Daniel




> Signed-off-by: Daniel Mack <zonque@gmail.com>
> ---
>  arch/arm/mach-omap2/board-generic.c | 1 +
>  arch/arm/mach-omap2/prcm.c          | 6 ++++++
>  2 files changed, 7 insertions(+)
> 
> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
> index 601ecdf..6a69ceb 100644
> --- a/arch/arm/mach-omap2/board-generic.c
> +++ b/arch/arm/mach-omap2/board-generic.c
> @@ -114,6 +114,7 @@ DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
>  	.init_machine	= omap_generic_init,
>  	.timer		= &omap3_am33xx_timer,
>  	.dt_compat	= am33xx_boards_compat,
> +	.restart	= omap_prcm_restart,
>  MACHINE_END
>  #endif
>  
> diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
> index 0f51e03..8a3068a 100644
> --- a/arch/arm/mach-omap2/prcm.c
> +++ b/arch/arm/mach-omap2/prcm.c
> @@ -32,6 +32,7 @@
>  #include "clock2xxx.h"
>  #include "cm2xxx_3xxx.h"
>  #include "prm2xxx_3xxx.h"
> +#include "prm33xx.h"
>  #include "prm44xx.h"
>  #include "prminst44xx.h"
>  #include "cminst44xx.h"
> @@ -72,6 +73,11 @@ void omap_prcm_restart(char mode, const char *cmd)
>  		omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
>  	} else if (cpu_is_omap44xx()) {
>  		omap4_prminst_global_warm_sw_reset(); /* never returns */
> +	} else if (soc_is_am33xx()) {
> +		prcm_offs = AM33XX_PRM_DEVICE_MOD;
> +		omap2_prm_set_mod_reg_bits(OMAP4430_RST_GLOBAL_COLD_SW_MASK,
> +					   prcm_offs,
> +					   AM33XX_PRM_RSTCTRL_OFFSET);
>  	} else {
>  		WARN_ON(1);
>  	}
>
Vaibhav Bedia Oct. 29, 2012, 4:34 a.m. UTC | #2
On Mon, Oct 29, 2012 at 00:49:19, Daniel Mack wrote:
> [Cc Tony]
> 
> On 28.10.2012 19:17, Daniel Mack wrote:
> > This patch adds the ability to reboot am33xx-based systems.
> 
> Sorry, I lacked to investigate on the attribution here. According to
> "git blame" of a BSP kernel I got these lines from, the original author
> is Afzal Mohammed.
> 
> Afzal, are you planning to resubmit this for mainline? My version can of
> course be disposed then.
> 

This should be on top of Paul's recent changes [1] to save him some rework
headache.
 
Regards,
Vaibhav

[1] http://marc.info/?l=linux-omap&m=135120744528680&w=2
Afzal Mohammed Oct. 29, 2012, 8:08 a.m. UTC | #3
Hi Daniel,

On Monday 29 October 2012 12:49 AM, Daniel Mack wrote:

> Afzal, are you planning to resubmit this for mainline? My version can of
> course be disposed then.

I am not planning to submit it as of now, and Vaibhav H has
a better suggestion on this, you may co-ordinate with him.

Regards
Afzal
diff mbox

Patch

diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 601ecdf..6a69ceb 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -114,6 +114,7 @@  DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
 	.init_machine	= omap_generic_init,
 	.timer		= &omap3_am33xx_timer,
 	.dt_compat	= am33xx_boards_compat,
+	.restart	= omap_prcm_restart,
 MACHINE_END
 #endif
 
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index 0f51e03..8a3068a 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -32,6 +32,7 @@ 
 #include "clock2xxx.h"
 #include "cm2xxx_3xxx.h"
 #include "prm2xxx_3xxx.h"
+#include "prm33xx.h"
 #include "prm44xx.h"
 #include "prminst44xx.h"
 #include "cminst44xx.h"
@@ -72,6 +73,11 @@  void omap_prcm_restart(char mode, const char *cmd)
 		omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
 	} else if (cpu_is_omap44xx()) {
 		omap4_prminst_global_warm_sw_reset(); /* never returns */
+	} else if (soc_is_am33xx()) {
+		prcm_offs = AM33XX_PRM_DEVICE_MOD;
+		omap2_prm_set_mod_reg_bits(OMAP4430_RST_GLOBAL_COLD_SW_MASK,
+					   prcm_offs,
+					   AM33XX_PRM_RSTCTRL_OFFSET);
 	} else {
 		WARN_ON(1);
 	}