[PATCH v5 1/4] clk: rockchip: fix big.LITTLE cores alternate reparent failed

Xing Zheng
2016-03-26T06:37:53Z

On the RK3399, the order of the core's parents are LPLL/BPLL/DPLL/GPLL,
there is incorrect to select bit_0 and bit_1 as the main and alternate
parents for LPLL/BPLL. They should be configurable.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
---

Changes in v5: None
Changes in v3: None
Changes in v2: None

drivers/clk/rockchip/clk-cpu.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/rockchip/clk-cpu.c b/drivers/clk/rockchip/clk-cpu.c
index 5556849..4bb130c 100644
--- a/drivers/clk/rockchip/clk-cpu.c
+++ b/drivers/clk/rockchip/clk-cpu.c
@@ -258,7 +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;

@@ -276,10 +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;
}
@@ -291,10 +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;
}
--
1.7.9.5