diff options
| author | Samuel Holland <samuel@sholland.org> | 2022-08-12 11:00:49 +0300 |
|---|---|---|
| committer | Jernej Skrabec <jernej.skrabec@gmail.com> | 2022-08-26 00:44:22 +0300 |
| commit | 3930624c3936b8358bd8944fd8b00505c6519a0a (patch) | |
| tree | 4f0239ca4da2d8f7df88f70e1c3f3e5778ecdefb /drivers/clk/sunxi-ng | |
| parent | 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 (diff) | |
| download | linux-3930624c3936b8358bd8944fd8b00505c6519a0a.tar.xz | |
clk: sunxi-ng: d1: Limit PLL rates to stable ranges
Set the min/max rates for audio and video PLLs to keep them from going
outside their documented stable ranges. Use the most restrictive of the
"stable" and "actual" frequencies listed in the manual.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220812080050.59850-1-samuel@sholland.org
Diffstat (limited to 'drivers/clk/sunxi-ng')
| -rw-r--r-- | drivers/clk/sunxi-ng/ccu-sun20i-d1.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/clk/sunxi-ng/ccu-sun20i-d1.c b/drivers/clk/sunxi-ng/ccu-sun20i-d1.c index 51058ba4db4d..8ef3cdeb7962 100644 --- a/drivers/clk/sunxi-ng/ccu-sun20i-d1.c +++ b/drivers/clk/sunxi-ng/ccu-sun20i-d1.c @@ -104,6 +104,8 @@ static struct ccu_nm pll_video0_4x_clk = { .lock = BIT(28), .n = _SUNXI_CCU_MULT_MIN(8, 8, 12), .m = _SUNXI_CCU_DIV(1, 1), /* input divider */ + .min_rate = 252000000U, + .max_rate = 2400000000U, .common = { .reg = 0x040, .hw.init = CLK_HW_INIT_PARENTS_DATA("pll-video0-4x", osc24M, @@ -126,6 +128,8 @@ static struct ccu_nm pll_video1_4x_clk = { .lock = BIT(28), .n = _SUNXI_CCU_MULT_MIN(8, 8, 12), .m = _SUNXI_CCU_DIV(1, 1), /* input divider */ + .min_rate = 252000000U, + .max_rate = 2400000000U, .common = { .reg = 0x048, .hw.init = CLK_HW_INIT_PARENTS_DATA("pll-video1-4x", osc24M, @@ -175,6 +179,8 @@ static struct ccu_nm pll_audio0_4x_clk = { .m = _SUNXI_CCU_DIV(16, 6), .sdm = _SUNXI_CCU_SDM(pll_audio0_sdm_table, BIT(24), 0x178, BIT(31)), + .min_rate = 180000000U, + .max_rate = 3000000000U, .common = { .reg = 0x078, .features = CCU_FEATURE_SIGMA_DELTA_MOD, @@ -202,6 +208,8 @@ static struct ccu_nm pll_audio1_clk = { .lock = BIT(28), .n = _SUNXI_CCU_MULT_MIN(8, 8, 12), .m = _SUNXI_CCU_DIV(1, 1), + .min_rate = 180000000U, + .max_rate = 3000000000U, .common = { .reg = 0x080, .hw.init = CLK_HW_INIT_PARENTS_DATA("pll-audio1", osc24M, |