diff mbox

[U-Boot,v2,3/6] mx6: soc: Set the VDDSOC at 1.175 V

Message ID 1388076695-28174-3-git-send-email-festevam@gmail.com
State Accepted
Delegated to: Stefano Babic
Headers show

Commit Message

Fabio Estevam Dec. 26, 2013, 4:51 p.m. UTC 
From: Fabio Estevam <fabio.estevam@freescale.com>

mx6 datasheet specifies that the minimum VDDSOC at 792 MHz is 1.15 V.
Add a 25 mV margin and set it to 1.175V.

This also matches the VDDSOC voltages for 792MHz operation that the kernel configures:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/mach-mx6/cpu_op-mx6.c?h=imx_3.0.35_4.1.0

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Changes since v1:
- None

 arch/arm/cpu/armv7/mx6/soc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Stefano Babic Jan. 2, 2014, 4:19 p.m. UTC | #1 
On 26/12/2013 17:51, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> mx6 datasheet specifies that the minimum VDDSOC at 792 MHz is 1.15 V.
> Add a 25 mV margin and set it to 1.175V.
> 
> This also matches the VDDSOC voltages for 792MHz operation that the kernel configures:
> http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/mach-mx6/cpu_op-mx6.c?h=imx_3.0.35_4.1.0
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic
diff mbox

Patch

diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index 13b9e36..0136eb0 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -151,7 +151,7 @@  int arch_cpu_init(void)
 {
 	init_aips();
 
-	set_vddsoc(1200);	/* Set VDDSOC to 1.2V */
+	set_vddsoc(1175);	/* Set VDDSOC to 1.175V */
 
 	imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */