clk: rockchip: rk3588: support aclk_top_root set 750M
aclk_top_root choose a parent clock that does not change.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/clk/rockchip/clk_rk3588.c b/drivers/clk/rockchip/clk_rk3588.c
index c861762..7ba037a 100644
--- a/drivers/clk/rockchip/clk_rk3588.c
+++ b/drivers/clk/rockchip/clk_rk3588.c
@@ -306,12 +306,18 @@
switch (clk_id) {
case ACLK_TOP_ROOT:
- src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
+ if (!(priv->cpll_hz % rate)) {
+ src_clk = ACLK_TOP_ROOT_SRC_SEL_CPLL;
+ src_clk_div = DIV_ROUND_UP(priv->cpll_hz, rate);
+ } else {
+ src_clk = ACLK_TOP_ROOT_SRC_SEL_GPLL;
+ src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
+ }
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[8],
ACLK_TOP_ROOT_DIV_MASK |
ACLK_TOP_ROOT_SRC_SEL_MASK,
- (ACLK_TOP_ROOT_SRC_SEL_GPLL <<
+ (src_clk <<
ACLK_TOP_ROOT_SRC_SEL_SHIFT) |
(src_clk_div - 1) << ACLK_TOP_ROOT_DIV_SHIFT);
break;