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authorDmitry Baryshkov <dmitry.baryshkov@linaro.org>2022-09-16 08:17:38 +0200
committerStephen Boyd <sboyd@kernel.org>2022-09-30 02:55:26 +0200
commitf5290d8e4f0caa81a491448a27dd70e726095d07 (patch)
treefc0b28501941b6f06cc3a0cf66cf83a000520523 /drivers/clk
parentLinux 6.0-rc1 (diff)
downloadlinux-f5290d8e4f0caa81a491448a27dd70e726095d07.tar.xz
linux-f5290d8e4f0caa81a491448a27dd70e726095d07.zip
clk: asm9260: use parent index to link the reference clock
Rewrite clk-asm9260 to use parent index to use the reference clock. During this rework two helpers are added: - clk_hw_register_mux_table_parent_data() to supplement clk_hw_register_mux_table() but using parent_data instead of parent_names - clk_hw_register_fixed_rate_parent_accuracy() to be used instead of directly calling __clk_hw_register_fixed_rate(). The later function is an internal API, which is better not to be called directly. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220916061740.87167-2-dmitry.baryshkov@linaro.org Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/clk-asm9260.c29
1 files changed, 12 insertions, 17 deletions
diff --git a/drivers/clk/clk-asm9260.c b/drivers/clk/clk-asm9260.c
index bacebd457e6f..8b3c059e19a1 100644
--- a/drivers/clk/clk-asm9260.c
+++ b/drivers/clk/clk-asm9260.c
@@ -80,7 +80,7 @@ struct asm9260_mux_clock {
u8 mask;
u32 *table;
const char *name;
- const char **parent_names;
+ const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long offset;
unsigned long flags;
@@ -232,10 +232,10 @@ static const struct asm9260_gate_data asm9260_ahb_gates[] __initconst = {
HW_AHBCLKCTRL1, 16 },
};
-static const char __initdata *main_mux_p[] = { NULL, NULL };
-static const char __initdata *i2s0_mux_p[] = { NULL, NULL, "i2s0m_div"};
-static const char __initdata *i2s1_mux_p[] = { NULL, NULL, "i2s1m_div"};
-static const char __initdata *clkout_mux_p[] = { NULL, NULL, "rtc"};
+static struct clk_parent_data __initdata main_mux_p[] = { { .index = 0, }, { .name = "pll" } };
+static struct clk_parent_data __initdata i2s0_mux_p[] = { { .index = 0, }, { .name = "pll" }, { .name = "i2s0m_div"} };
+static struct clk_parent_data __initdata i2s1_mux_p[] = { { .index = 0, }, { .name = "pll" }, { .name = "i2s1m_div"} };
+static struct clk_parent_data __initdata clkout_mux_p[] = { { .index = 0, }, { .name = "pll" }, { .name = "rtc"} };
static u32 three_mux_table[] = {0, 1, 3};
static struct asm9260_mux_clock asm9260_mux_clks[] __initdata = {
@@ -255,9 +255,10 @@ static struct asm9260_mux_clock asm9260_mux_clks[] __initdata = {
static void __init asm9260_acc_init(struct device_node *np)
{
- struct clk_hw *hw;
+ struct clk_hw *hw, *pll_hw;
struct clk_hw **hws;
- const char *ref_clk, *pll_clk = "pll";
+ const char *pll_clk = "pll";
+ struct clk_parent_data pll_parent_data = { .index = 0 };
u32 rate;
int n;
@@ -274,21 +275,15 @@ static void __init asm9260_acc_init(struct device_node *np)
/* register pll */
rate = (ioread32(base + HW_SYSPLLCTRL) & 0xffff) * 1000000;
- /* TODO: Convert to DT parent scheme */
- ref_clk = of_clk_get_parent_name(np, 0);
- hw = __clk_hw_register_fixed_rate(NULL, NULL, pll_clk,
- ref_clk, NULL, NULL, 0, rate, 0,
- CLK_FIXED_RATE_PARENT_ACCURACY);
-
- if (IS_ERR(hw))
+ pll_hw = clk_hw_register_fixed_rate_parent_accuracy(NULL, pll_clk, &pll_parent_data,
+ 0, rate);
+ if (IS_ERR(pll_hw))
panic("%pOFn: can't register REFCLK. Check DT!", np);
for (n = 0; n < ARRAY_SIZE(asm9260_mux_clks); n++) {
const struct asm9260_mux_clock *mc = &asm9260_mux_clks[n];
- mc->parent_names[0] = ref_clk;
- mc->parent_names[1] = pll_clk;
- hw = clk_hw_register_mux_table(NULL, mc->name, mc->parent_names,
+ hw = clk_hw_register_mux_table_parent_data(NULL, mc->name, mc->parent_data,
mc->num_parents, mc->flags, base + mc->offset,
0, mc->mask, 0, mc->table, &asm9260_clk_lock);
}