clk: rockchip: rk3568: Add PLL rate for 292.5MHz

[ Upstream commit 1af27671f62ce919f1fb76082ed81f71cb090989 ]

Add support for a PLL rate of 292.5MHz so that the Powkiddy RGB30 panel
can run at a requested 60hz (59.96, close enough).

I have confirmed this rate fits with all the constraints
listed in the TRM for the VPLL (as an integer PLL) in Part 1 "Chapter
2 Clock & Reset Unit (CRU)."

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20231018153357.343142-2-macroalpha82@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/rockchip/clk-rk3568.c b/drivers/clk/rockchip/clk-rk3568.c
index 16dabe2..db713e1 100644 (file)
--- a/drivers/clk/rockchip/clk-rk3568.c
+++ b/drivers/clk/rockchip/clk-rk3568.c
@@ -72,6 +72,7 @@ static struct rockchip_pll_rate_table rk3568_pll_rates[] = {
        RK3036_PLL_RATE(408000000, 1, 68, 2, 2, 1, 0),
        RK3036_PLL_RATE(312000000, 1, 78, 6, 1, 1, 0),
        RK3036_PLL_RATE(297000000, 2, 99, 4, 1, 1, 0),
+       RK3036_PLL_RATE(292500000, 1, 195, 4, 4, 1, 0),
        RK3036_PLL_RATE(241500000, 2, 161, 4, 2, 1, 0),
        RK3036_PLL_RATE(216000000, 1, 72, 4, 2, 1, 0),
        RK3036_PLL_RATE(200000000, 1, 100, 3, 4, 1, 0),