From: Peter De Schrijver <pdeschrijver@nvidia.com>
To: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Colin Cross <ccross@android.com>, Olof Johansson <olof@lixom.net>,
Stephen Warren <swarren@wwwdotorg.org>,
Russell King <linux@arm.linux.org.uk>,
linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] ARM: tegra: Initialize pll_p_out1
Date: Mon, 23 Apr 2012 11:31:49 +0300 [thread overview]
Message-ID: <1335169910-29403-1-git-send-email-pdeschrijver@nvidia.com> (raw)
pll_a uses pll_p_out1 as its parent. Therefore this clock needs to be
initialized to make sure pll_a has a known input clock. Failure to do so
will cause the system to crash early in the bootup.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
--
Changes in v2:
* moved pll_p_out1 initialization to early_init to make it similar to the
tegra20 code.
---
arch/arm/mach-tegra/common.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index c50f2ee..654a457 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -95,6 +95,17 @@ static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = {
};
#endif
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+static __initdata struct tegra_clk_init_table tegra30_clk_init_table[] = {
+ /* name parent rate enabled */
+ { "clk_m", NULL, 0, true },
+ { "pll_p", "clk_m", 408000000, true },
+ { "pll_p_out1", "pll_p", 9600000, true },
+ { NULL, NULL, 0, 0},
+};
+#endif
+
+
static void __init tegra_init_cache(u32 tag_latency, u32 data_latency)
{
#ifdef CONFIG_CACHE_L2X0
@@ -129,6 +140,7 @@ void __init tegra30_init_early(void)
{
tegra_init_fuse();
tegra30_init_clocks();
+ tegra_clk_init_from_table(tegra30_clk_init_table);
tegra_init_cache(0x441, 0x551);
tegra_pmc_init();
tegra_powergate_init();
--
1.7.7.rc0.72.g4b5ea.dirty
next reply other threads:[~2012-04-23 8:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-23 8:31 Peter De Schrijver [this message]
2012-04-23 16:31 ` Stephen Warren
2012-04-24 8:26 ` Peter De Schrijver
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