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| author | Tom Warren <twarren.nvidia@gmail.com> | 2014-01-24 10:16:22 -0700 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2014-02-03 09:46:45 -0700 |
| commit | c82014daf5ed8030d2ec5903bd51b5ab817fb000 (patch) | |
| tree | 6f3ef330baf44f4cbc6bfa304b9d557e0c074dac | |
| parent | 04b8e8e7452a4cd00003e33a5a736bd077ff3471 (diff) | |
| download | talos-obmc-uboot-c82014daf5ed8030d2ec5903bd51b5ab817fb000.tar.gz talos-obmc-uboot-c82014daf5ed8030d2ec5903bd51b5ab817fb000.zip | |
ARM: tegra: implement MASK_BITS_31_29
Some clock sources have 3-bit muxes in bits 31:29. Implement core
support for this mux field.
Signed-off-by: Tom Warren <twarren@nvidia.com>
[swarren, extracted from a larger patch by Tom]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
| -rw-r--r-- | arch/arm/cpu/tegra-common/clock.c | 22 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-tegra/clk_rst.h | 3 |
2 files changed, 21 insertions, 4 deletions
diff --git a/arch/arm/cpu/tegra-common/clock.c b/arch/arm/cpu/tegra-common/clock.c index 96b705f2f6..33bb19084b 100644 --- a/arch/arm/cpu/tegra-common/clock.c +++ b/arch/arm/cpu/tegra-common/clock.c @@ -304,13 +304,27 @@ static int adjust_periph_pll(enum periph_id periph_id, int source, /* work out the source clock and set it */ if (source < 0) return -1; - if (mux_bits == MASK_BITS_31_28) { - clrsetbits_le32(reg, OUT_CLK_SOURCE_31_28_MASK, - source << OUT_CLK_SOURCE_31_28_SHIFT); - } else { + + switch (mux_bits) { + case MASK_BITS_31_30: clrsetbits_le32(reg, OUT_CLK_SOURCE_31_30_MASK, source << OUT_CLK_SOURCE_31_30_SHIFT); + break; + + case MASK_BITS_31_29: + clrsetbits_le32(reg, OUT_CLK_SOURCE_31_29_MASK, + source << OUT_CLK_SOURCE_31_29_SHIFT); + break; + + case MASK_BITS_31_28: + clrsetbits_le32(reg, OUT_CLK_SOURCE_31_28_MASK, + source << OUT_CLK_SOURCE_31_28_SHIFT); + break; + + default: + return -1; } + udelay(2); return 0; } diff --git a/arch/arm/include/asm/arch-tegra/clk_rst.h b/arch/arm/include/asm/arch-tegra/clk_rst.h index 9f81237d28..f07b83d26a 100644 --- a/arch/arm/include/asm/arch-tegra/clk_rst.h +++ b/arch/arm/include/asm/arch-tegra/clk_rst.h @@ -236,6 +236,9 @@ enum { #define OUT_CLK_SOURCE_31_30_SHIFT 30 #define OUT_CLK_SOURCE_31_30_MASK (3U << OUT_CLK_SOURCE_31_30_SHIFT) +#define OUT_CLK_SOURCE_31_29_SHIFT 29 +#define OUT_CLK_SOURCE_31_29_MASK (7U << OUT_CLK_SOURCE_31_29_SHIFT) + /* Note: See comment for MASK_BITS_31_28 in arch-tegra/clock.h */ #define OUT_CLK_SOURCE_31_28_SHIFT 28 #define OUT_CLK_SOURCE_31_28_MASK (15U << OUT_CLK_SOURCE_31_28_SHIFT) |
