[PATCH 2/5] clk: sunxi-ng: a64: Add constraints on PLL-MIPI's n/m ratio and parent rate

Frank Oltmanns frank at oltmanns.dev
Mon Dec 18 05:35:20 PST 2023


The Allwinner A64 manual lists the following constraints for the
PLL-MIPI clock:
 - M/N >= 3
 - (PLL_VIDEO0)/M >= 24MHz

Use these constraints.

Signed-off-by: Frank Oltmanns <frank at oltmanns.dev>
---
 drivers/clk/sunxi-ng/ccu-sun50i-a64.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
index 8951ffc14ff5..c034ac027d1c 100644
--- a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
+++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
@@ -176,6 +176,8 @@ static struct ccu_nkm pll_mipi_clk = {
 	.n		= _SUNXI_CCU_MULT(8, 4),
 	.k		= _SUNXI_CCU_MULT_MIN(4, 2, 2),
 	.m		= _SUNXI_CCU_DIV(0, 4),
+	.max_mn_ratio	= 3,
+	.parent_wo_nk	= 24000000,
 	.common		= {
 		.reg		= 0x040,
 		.hw.init	= CLK_HW_INIT("pll-mipi", "pll-video0",

-- 
2.43.0




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