clk: sunxi-ng: a64: Set minimum and maximum rate for PLL-MIPI

When the Allwinner A64's TCON0 searches the ideal rate for the connected
panel, it may happen that it requests a rate from its parent PLL-MIPI
which PLL-MIPI does not support.

This happens for example on the Olimex TERES-I laptop where TCON0
requests PLL-MIPI to change to a rate of several GHz which causes the
panel to stay blank. It also happens on the pinephone where a rate of
less than 500 MHz is requested which causes instabilities on some
phones.

Set the minimum and maximum rate of Allwinner A64's PLL-MIPI according
to the Allwinner User Manual.

Fixes: ca1170b ("clk: sunxi-ng: a64: force select PLL_MIPI in TCON0 mux")
Reported-by: Diego Roversi <[email protected]>
Closes: https://groups.google.com/g/linux-sunxi/c/Rh-Uqqa66bw
Tested-by: Diego Roversi <[email protected]>
Cc: [email protected]
Reviewed-by: Maxime Ripard <[email protected]>
Signed-off-by: Frank Oltmanns <[email protected]>
Reviewed-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jernej Skrabec <[email protected]>

Author: Frank Oltmanns

drivers/clk/sunxi-ng/ccu-sun50i-a64.c

@@ -182,6 +182,8 @@ static struct ccu_nkm pll_mipi_clk = {
 					      &ccu_nkm_ops,
 					      CLK_SET_RATE_UNGATE | CLK_SET_RATE_PARENT),
 		.features	= CCU_FEATURE_CLOSEST_RATE,
+		.min_rate	= 500000000,
+		.max_rate	= 1400000000,
 	},
 };