diff options
| author | JC Kuo <jckuo@nvidia.com> | 2020-03-26 16:10:09 -0700 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2020-04-02 14:30:01 -0700 |
| commit | d491dc09e4cfb7e513d3d6f448d811f1297753d9 (patch) | |
| tree | df53d53d39048ade69bc6e351ee8c78b9aff5fc7 /arch/arm/mach-tegra/tegra210/clock.c | |
| parent | 9eb15cbe5c94fca24519b5d89d934eeb34a68e5d (diff) | |
t210: do not enable PLLE and UPHY PLL HW PWRSEQ
This commit removes the programming sequence that enables PLLE and UPHY
PLL hardware power sequencers. Per TRM, boot software should enable PLLE
and UPHY PLLs in software controlled power-on state and should power
down PLL before jumping into kernel or the next stage boot software.
Adds call to board_cleanup_before_linux to facilitate this.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra210/clock.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra210/clock.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/arm/mach-tegra/tegra210/clock.c b/arch/arm/mach-tegra/tegra210/clock.c index b240860f08..f1b25e262a 100644 --- a/arch/arm/mach-tegra/tegra210/clock.c +++ b/arch/arm/mach-tegra/tegra210/clock.c @@ -1235,25 +1235,6 @@ int tegra_plle_enable(void) value &= ~PLLE_SS_CNTL_INTERP_RESET; writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL); - /* 7. Enable HW power sequencer for PLLE */ - - value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC); - value &= ~PLLE_MISC_IDDQ_SWCTL; - writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC); - - value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX); - value &= ~PLLE_AUX_SS_SWCTL; - value &= ~PLLE_AUX_ENABLE_SWCTL; - value |= PLLE_AUX_SS_SEQ_INCLUDE; - value |= PLLE_AUX_USE_LOCKDET; - writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX); - - /* 8. Wait 1 us */ - - udelay(1); - value |= PLLE_AUX_SEQ_ENABLE; - writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX); - return 0; } |