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ARM: tegra: trimslice: enable PCIe when booting from device tree

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There currently aren't bindings for the Tegra PCIe controller. Work on
this is in progress, but not yet complete. Manually initialize PCIe when
booting from device tree, in order to bring DT support to the same
feature level as board files, which will in turn allow board files to be
deprecated.

PCIe hosts the wired Ethernet controller on TrimSlice.

To support this, add infra-structure to board-dt-tegra20.c for board-
specific initialization code. Once device tree support for the relevant
features is in place, this code will be removed.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Stephen Warren 2012-05-02 13:43:26 -06:00
parent 98a1405e20
commit c554dee35c
1 changed files with 35 additions and 1 deletions
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36
arch/arm/mach-tegra/board-dt-tegra20.c
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@ -98,6 +98,40 @@ static void __init tegra_dt_init(void)
tegra20_auxdata_lookup, NULL);
}
#ifdef CONFIG_MACH_TRIMSLICE
static void __init trimslice_init(void)
{
int ret;
ret = tegra_pcie_init(true, true);
if (ret)
pr_err("tegra_pci_init() failed: %d\n", ret);
}
#endif
static struct {
char *machine;
void (*init)(void);
} board_init_funcs[] = {
#ifdef CONFIG_MACH_TRIMSLICE
{ "compulab,trimslice", trimslice_init },
#endif
};
static void __init tegra_dt_init_late(void)
{
int i;
tegra_init_late();
for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
if (of_machine_is_compatible(board_init_funcs[i].machine)) {
board_init_funcs[i].init();
break;
}
}
}
static const char *tegra20_dt_board_compat[] = {
"nvidia,tegra20",
NULL
@ -110,7 +144,7 @@ DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
.handle_irq = gic_handle_irq,
.timer = &tegra_timer,
.init_machine = tegra_dt_init,
.init_late = tegra_init_late,
.init_late = tegra_dt_init_late,
.restart = tegra_assert_system_reset,
.dt_compat = tegra20_dt_board_compat,
MACHINE_END