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| author | Tom Rini <trini@konsulko.com> | 2023-02-23 17:32:22 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-02-23 17:40:18 -0500 |
| commit | 0024e7f72b689f8c2df731a69e20f47b6f8dc5a7 (patch) | |
| tree | 03da9b68c29df4ffa5c181acca8ce6176636a410 /arch/arm/mach-tegra/clock.c | |
| parent | 0b58258a33280a536c5b1e5e90dfdf0b5b5852cc (diff) | |
| parent | 5a8fe1ee818e0f8a74fa088f6a3d705a01b6afbe (diff) | |
Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-tegra
Diffstat (limited to 'arch/arm/mach-tegra/clock.c')
| -rw-r--r-- | arch/arm/mach-tegra/clock.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c index 11bffc1701..966009f375 100644 --- a/arch/arm/mach-tegra/clock.c +++ b/arch/arm/mach-tegra/clock.c @@ -678,6 +678,29 @@ int clock_decode_periph_id(struct udevice *dev) assert(clock_periph_id_isvalid(id)); return id; } + +/* + * Get periph clock id and its parent from device tree. + * + * @param dev udevice associated with FDT node + * @param clk_id pointer to u32 array of 2 values + * first is periph clock, second is + * its PLL parent according to FDT. + */ +int clock_decode_pair(struct udevice *dev, int *clk_id) +{ + u32 cell[4]; + int err; + + err = dev_read_u32_array(dev, "clocks", cell, ARRAY_SIZE(cell)); + if (err) + return -EINVAL; + + clk_id[0] = clk_id_to_periph_id(cell[1]); + clk_id[1] = clk_id_to_pll_id(cell[3]); + + return 0; +} #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */ int clock_verify(void) |