From: Fabio Estevam <festevam@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 3/6] mx6: soc: Set the VDDSOC at 1.175 V
Date: Thu, 26 Dec 2013 14:51:32 -0200 [thread overview]
Message-ID: <1388076695-28174-3-git-send-email-festevam@gmail.com> (raw)
In-Reply-To: <1388076695-28174-1-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>
---
Changes since v1:
- None
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:[~2013-12-26 16:51 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-26 16:51 [U-Boot] [PATCH v2 1/6] mx6: soc: Staticize set_vddsoc() Fabio Estevam
2013-12-26 16:51 ` [U-Boot] [PATCH v2 2/6] mx6: soc: Clear the LDO ramp values up prior to setting the LDO voltages Fabio Estevam
2014-01-02 16:18 ` Stefano Babic
2013-12-26 16:51 ` Fabio Estevam [this message]
2014-01-02 16:19 ` [U-Boot] [PATCH v2 3/6] mx6: soc: Set the VDDSOC at 1.175 V Stefano Babic
2013-12-26 16:51 ` [U-Boot] [PATCH v2 4/6] mx6: soc: Introduce set_ldo_voltage() Fabio Estevam
2014-01-02 16:20 ` Stefano Babic
2013-12-26 16:51 ` [U-Boot] [PATCH v2 5/6] mx6: soc: Add the required LDO ramp up delay Fabio Estevam
2014-01-02 16:20 ` Stefano Babic
2013-12-26 16:51 ` [U-Boot] [PATCH v2 6/6] mx6: soc: Disable VDDPU regulator Fabio Estevam
2014-01-02 16:21 ` Stefano Babic
2014-01-09 17:50 ` Otavio Salvador
2014-01-09 19:06 ` Fabio Estevam
2014-01-09 19:11 ` Otavio Salvador
2014-01-09 19:13 ` Fabio Estevam
2014-01-09 19:30 ` Fabio Estevam
2014-01-09 19:39 ` Otavio Salvador
2014-01-09 20:34 ` Fabio Estevam
2014-01-09 21:31 ` Stefano Babic
2014-01-15 17:12 ` Otavio Salvador
2014-01-15 17:33 ` Stefano Babic
2014-01-16 8:40 ` Pierre Aubert
2014-01-16 11:19 ` Fabio Estevam
2014-01-16 11:25 ` Pierre AUBERT
2014-01-02 16:21 ` [U-Boot] [PATCH v2 1/6] mx6: soc: Staticize set_vddsoc() Stefano Babic
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