diff options
| author | Xing Zheng <zhengxing@rock-chips.com> | 2016-03-09 10:37:03 +0800 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2016-03-27 13:03:33 +0200 |
| commit | 268aebaa2410152bf91ea1ede6b284ff8138822d (patch) | |
| tree | f3831b0a1978eb3eeb0abf22d90e6c839a66f6f0 /drivers/clk/rockchip/clk-cpu.c | |
| parent | 9387bfd19b457085189d918ef117ffd63c4d67a0 (diff) | |
| download | linux-268aebaa2410152bf91ea1ede6b284ff8138822d.tar.bz2 | |
clk: rockchip: allow varying mux parameters for cpuclk pll-sources
Thers are only two parent PLLs that APLL and GPLL for core on the
previous SoCs (RK3066/RK3188/RK3288/RK3368). Hence, we set fixed
GPLL as alternate parent when core is switching freq.
Since RK3399 big.LITTLE architecture, we need to select and adapt
more PLLs (ALPLL/ABPLL/DPLL/GPLL) sources.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'drivers/clk/rockchip/clk-cpu.c')
| -rw-r--r-- | drivers/clk/rockchip/clk-cpu.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/clk/rockchip/clk-cpu.c b/drivers/clk/rockchip/clk-cpu.c index 4e73ed5cab58..4bb130cd0062 100644 --- a/drivers/clk/rockchip/clk-cpu.c +++ b/drivers/clk/rockchip/clk-cpu.c @@ -158,12 +158,16 @@ static int rockchip_cpuclk_pre_rate_change(struct rockchip_cpuclk *cpuclk, writel(HIWORD_UPDATE(alt_div, reg_data->div_core_mask, reg_data->div_core_shift) | - HIWORD_UPDATE(1, 1, reg_data->mux_core_shift), + HIWORD_UPDATE(reg_data->mux_core_alt, + reg_data->mux_core_mask, + reg_data->mux_core_shift), cpuclk->reg_base + reg_data->core_reg); } else { /* select alternate parent */ - writel(HIWORD_UPDATE(1, 1, reg_data->mux_core_shift), - cpuclk->reg_base + reg_data->core_reg); + writel(HIWORD_UPDATE(reg_data->mux_core_alt, + reg_data->mux_core_mask, + reg_data->mux_core_shift), + cpuclk->reg_base + reg_data->core_reg); } spin_unlock_irqrestore(cpuclk->lock, flags); @@ -198,7 +202,9 @@ static int rockchip_cpuclk_post_rate_change(struct rockchip_cpuclk *cpuclk, writel(HIWORD_UPDATE(0, reg_data->div_core_mask, reg_data->div_core_shift) | - HIWORD_UPDATE(0, 1, reg_data->mux_core_shift), + HIWORD_UPDATE(reg_data->mux_core_main, + reg_data->mux_core_mask, + reg_data->mux_core_shift), cpuclk->reg_base + reg_data->core_reg); if (ndata->old_rate > ndata->new_rate) @@ -252,7 +258,7 @@ struct clk *rockchip_clk_register_cpuclk(const char *name, return ERR_PTR(-ENOMEM); init.name = name; - init.parent_names = &parent_names[0]; + init.parent_names = &parent_names[reg_data->mux_core_main]; init.num_parents = 1; init.ops = &rockchip_cpuclk_ops; @@ -270,10 +276,10 @@ struct clk *rockchip_clk_register_cpuclk(const char *name, cpuclk->clk_nb.notifier_call = rockchip_cpuclk_notifier_cb; cpuclk->hw.init = &init; - cpuclk->alt_parent = __clk_lookup(parent_names[1]); + cpuclk->alt_parent = __clk_lookup(parent_names[reg_data->mux_core_alt]); if (!cpuclk->alt_parent) { - pr_err("%s: could not lookup alternate parent\n", - __func__); + pr_err("%s: could not lookup alternate parent: (%d)\n", + __func__, reg_data->mux_core_alt); ret = -EINVAL; goto free_cpuclk; } @@ -285,10 +291,11 @@ struct clk *rockchip_clk_register_cpuclk(const char *name, goto free_cpuclk; } - clk = __clk_lookup(parent_names[0]); + clk = __clk_lookup(parent_names[reg_data->mux_core_main]); if (!clk) { - pr_err("%s: could not lookup parent clock %s\n", - __func__, parent_names[0]); + pr_err("%s: could not lookup parent clock: (%d) %s\n", + __func__, reg_data->mux_core_main, + parent_names[reg_data->mux_core_main]); ret = -EINVAL; goto free_alt_parent; } |