From: Lucas Stach <dev@lynxeye.de>
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] ARM: tegra30: slow down CPU to 600 MHz
Date: Wed, 7 May 2014 22:05:29 +0200 [thread overview]
Message-ID: <1399493130-13670-1-git-send-email-dev@lynxeye.de> (raw)
It's not safe to ramp up the CPU clock speed to
1,4 GHz on all T30 SKUs, as this may result in failure
to start the kernel properly. Start CPU at 600 MHz,
which is safe even for the slowest SKUs.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
---
arch/arm/mach-tegra/tegra_avp_init.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-tegra/tegra_avp_init.c b/arch/arm/mach-tegra/tegra_avp_init.c
index 1afea44..53e81d9 100644
--- a/arch/arm/mach-tegra/tegra_avp_init.c
+++ b/arch/arm/mach-tegra/tegra_avp_init.c
@@ -87,10 +87,10 @@ static struct pll_config pllx_config_table[][4] = {
{1000, 26, 0, 12}, /* OSC 26.0 MHz */
}, /* TEGRA 20 */
{
- {862, 8, 0, 8},
- {583, 8, 0, 4},
- {700, 6, 0, 8},
- {700, 13, 0, 8},
+ {600, 13, 0, 8 },
+ {500, 16, 0, 8 },
+ {600, 12, 0, 8 },
+ {600, 26, 0, 8 },
}, /* TEGRA 30 */
};
--
1.9.0
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next reply other threads:[~2014-05-07 20:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-07 20:05 Lucas Stach [this message]
2014-05-07 20:05 ` [PATCH 2/2] ARM: tegra30: ramp vdd_core to 1,2V Lucas Stach
2014-05-08 7:36 ` [PATCH 1/2] ARM: tegra30: slow down CPU to 600 MHz Sascha Hauer
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