From: Fabio Estevam <festevam@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/6] mx6: soc: Set the VDDSOC at 1.175 V
Date: Thu, 19 Dec 2013 01:16:26 -0200 [thread overview]
Message-ID: <1387422989-15307-3-git-send-email-festevam@gmail.com> (raw)
In-Reply-To: <1387422989-15307-1-git-send-email-festevam@gmail.com>
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>
---
arch/arm/cpu/armv7/mx6/soc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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 */
--
1.8.1.2
next prev parent reply other threads:[~2013-12-19 3:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-19 3:16 [U-Boot] [PATCH 1/6] mx6: soc: Staticize set_vddsoc() Fabio Estevam
2013-12-19 3:16 ` [U-Boot] [PATCH 2/6] mx6: soc: Clear the LDO ramp values up prior to setting the LDO voltages Fabio Estevam
2013-12-19 3:16 ` Fabio Estevam [this message]
2013-12-19 3:16 ` [U-Boot] [PATCH 4/6] mx6: soc: Introduce set_ldo_voltage() Fabio Estevam
2013-12-19 3:16 ` [U-Boot] [PATCH 5/6] mx6: soc: Add the required LDO ramp up delay Fabio Estevam
2013-12-19 3:16 ` [U-Boot] [PATCH 6/6] mx6: soc: Disable VDDPU regulator Fabio Estevam
2013-12-24 15:30 ` Ranjani.Vaidyanathan at freescale.com
2013-12-26 17:00 ` Fabio Estevam
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