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| author | Lucas Stach <dev@lynxeye.de> | 2013-12-03 20:56:57 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-12-04 14:59:39 +0100 |
| commit | fbe8c22a2f9bae3422b615e28ab86a0892284637 (patch) | |
| tree | 647fe7fd2e5a16fed07d8a496b012e9de978eba8 /arch/arm/mach-tegra/tegra_maincomplex_init.c | |
| parent | 7b6c063f5786b7552c2c8a97f3c57a3cd5b966a7 (diff) | |
| download | barebox-fbe8c22a2f9bae3422b615e28ab86a0892284637.tar.gz barebox-fbe8c22a2f9bae3422b615e28ab86a0892284637.tar.xz | |
tegra: switch main CPU complex to PLLX early
Running at 1GHz, rather than 13MHz certainly makes things a bit faster.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-tegra/tegra_maincomplex_init.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra_maincomplex_init.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra_maincomplex_init.c b/arch/arm/mach-tegra/tegra_maincomplex_init.c index b3d59abd6b..5aad1dd65e 100644 --- a/arch/arm/mach-tegra/tegra_maincomplex_init.c +++ b/arch/arm/mach-tegra/tegra_maincomplex_init.c @@ -20,6 +20,7 @@ #include <asm/barebox-arm.h> #include <mach/lowlevel.h> #include <mach/tegra20-pmc.h> +#include <mach/tegra20-car.h> void tegra_maincomplex_entry(void) { @@ -27,6 +28,14 @@ void tegra_maincomplex_entry(void) arm_cpu_lowlevel_init(); + /* switch to PLLX */ + writel(CRC_CCLK_BURST_POLICY_SYS_STATE_RUN << + CRC_CCLK_BURST_POLICY_SYS_STATE_SHIFT | + CRC_CCLK_BURST_POLICY_SRC_PLLX_OUT0 << + CRC_CCLK_BURST_POLICY_RUN_SRC_SHIFT, + TEGRA_CLK_RESET_BASE + CRC_CCLK_BURST_POLICY); + writel(CRC_SUPER_CDIV_ENB, TEGRA_CLK_RESET_BASE + CRC_SUPER_CCLK_DIV); + switch (tegra_get_chiptype()) { case TEGRA20: rambase = 0x0; |