diff options
| author | Gabe Black <gabeblack@google.com> | 2013-06-06 00:14:08 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-07-10 21:46:12 +0200 |
| commit | 1162103958fad815e10b90524560b3b81f2c0b18 (patch) | |
| tree | bec7aad12464c8ed8ee196d4a5d616358bc65ad1 /src/cpu/samsung | |
| parent | d63bddc4991d9ace037fd716b29c3f7253e9ac94 (diff) | |
exynos5420: Fix some problems with the clock management code.
The code which figured out the rate of the input clock to a peripheral was
doing several things wrong. First, it was using the wrong values when
determing what the source of a clock was set to. Second, it was using the
wrong offset into that register to find the current source setting.
This change fixes the constants which select a clock source which get some
more things working, but doesn't attempt to fix the bit position table.
Change-Id: Id7482ee1c78cec274353bae3ce2dccb84705c66a
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3665
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/cpu/samsung')
| -rw-r--r-- | src/cpu/samsung/exynos5420/clk.h | 11 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/clock.c | 65 |
2 files changed, 36 insertions, 40 deletions
diff --git a/src/cpu/samsung/exynos5420/clk.h b/src/cpu/samsung/exynos5420/clk.h index b98a67384b..3d60b28009 100644 --- a/src/cpu/samsung/exynos5420/clk.h +++ b/src/cpu/samsung/exynos5420/clk.h @@ -35,9 +35,13 @@ enum periph_id; #define SPLL 7 enum pll_src_bit { - EXYNOS_SRC_MPLL = 6, - EXYNOS_SRC_EPLL, - EXYNOS_SRC_VPLL, + EXYNOS_SRC_CPLL = 1, + EXYNOS_SRC_DPLL = 2, + EXYNOS_SRC_MPLL = 3, + EXYNOS_SRC_SPLL = 4, + EXYNOS_SRC_IPLL = 5, + EXYNOS_SRC_EPLL = 6, + EXYNOS_SRC_RPLL = 7, }; /* * @@ -46,7 +50,6 @@ enum pll_src_bit { */ struct clk_bit_info { s8 src_bit; /* offset in register to clock source field */ - s8 n_src_bits; /* number of bits in 'src_bit' field */ s8 div_bit; s8 prediv_bit; }; diff --git a/src/cpu/samsung/exynos5420/clock.c b/src/cpu/samsung/exynos5420/clock.c index fd15486090..6e4701a826 100644 --- a/src/cpu/samsung/exynos5420/clock.c +++ b/src/cpu/samsung/exynos5420/clock.c @@ -30,39 +30,35 @@ /* src_bit div_bit prediv_bit */ static struct clk_bit_info clk_bit_info[PERIPH_ID_COUNT] = { - {0, 4, 0, -1}, - {4, 4, 4, -1}, - {8, 4, 8, -1}, - {12, 4, 12, -1}, - {0, 4, 0, 8}, - {4, 4, 16, 24}, - {8, 4, 0, 8}, - {12, 4, 16, 24}, - {-1, -1, -1, -1}, - {16, 4, 0, 8}, /* PERIPH_ID_SROMC */ - {20, 4, 16, 24}, - {24, 4, 0, 8}, - {0, 4, 0, 4}, - {4, 4, 12, 16}, - {-1, 4, -1, -1}, - {-1, 4, -1, -1}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {-1, 4, 24, 0}, - {24, 4, 0, -1}, - {24, 4, 0, -1}, - {24, 4, 0, -1}, - {24, 4, 0, -1}, - {24, 4, 0, -1}, - {-1, -1, -1, -1}, - {-1, -1, -1, -1}, - {-1, -1, -1, -1}, /* PERIPH_ID_I2S1 */ - {24, 1, 20, -1}, /* PERIPH_ID_SATA */ + {0, 0, -1}, + {4, 4, -1}, + {8, 8, -1}, + {12, 12, -1}, + {0, 0, 8}, + {4, 16, 24}, + {8, 0, 8}, + {12, 16, 24}, + {-1, -1, -1}, + {16, 0, 8}, /* PERIPH_ID_SROMC */ + {20, 16, 24}, + {24, 0, 8}, + {0, 0, 4}, + {4, 12, 16}, + {-1, -1, -1}, + {-1, -1, -1}, + {-1, 24, 0}, + {-1, 24, 0}, + {-1, 24, 0}, + {-1, 24, 0}, + {-1, 24, 0}, + {-1, 24, 0}, + {-1, 24, 0}, + {-1, 24, 0}, + {24, 0, -1}, + {24, 0, -1}, + {24, 0, -1}, + {24, 0, -1}, + {24, 0, -1}, }; /* Epll Clock division values to achive different frequency output */ @@ -221,9 +217,6 @@ unsigned long clock_get_periph_rate(enum periph_id peripheral) case EXYNOS_SRC_EPLL: sclk = get_pll_clk(EPLL); break; - case EXYNOS_SRC_VPLL: - sclk = get_pll_clk(VPLL); - break; default: return 0; } |