diff --git a/drivers/clk/rockchip/clk-ddr.c b/drivers/clk/rockchip/clk-ddr.c index a07cc3be5c73..8e475feb9e2a 100644 --- a/drivers/clk/rockchip/clk-ddr.c +++ b/drivers/clk/rockchip/clk-ddr.c @@ -100,6 +100,8 @@ static const struct clk_ops rockchip_ddrclk_sip_ops = { .get_parent = rockchip_ddrclk_get_parent, }; +static u32 ddr_clk_cached; + static int rockchip_ddrclk_scpi_set_rate(struct clk_hw *hw, unsigned long drate, unsigned long prate) { @@ -107,6 +109,13 @@ static int rockchip_ddrclk_scpi_set_rate(struct clk_hw *hw, unsigned long drate, u32 lcdc_type = 7; ret = scpi_ddr_set_clk_rate(drate / MHZ, lcdc_type); + if (ret) { + ddr_clk_cached = ret; + ret = 0; + } else { + ddr_clk_cached = 0; + ret = -1; + } return ret; } @@ -114,7 +123,10 @@ static int rockchip_ddrclk_scpi_set_rate(struct clk_hw *hw, unsigned long drate, static unsigned long rockchip_ddrclk_scpi_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { - return (MHZ * scpi_ddr_get_clk_rate()); + if (ddr_clk_cached) + return (MHZ * ddr_clk_cached); + else + return (MHZ * scpi_ddr_get_clk_rate()); } static long rockchip_ddrclk_scpi_round_rate(struct clk_hw *hw,