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clk: k210: Implement soc_clk_dump

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Since we are no longer using CCF we cannot use the default soc_clk_dump.
Instead, implement our own.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
This commit is contained in:
Sean Anderson 2021-06-11 00:16:10 -04:00 committed by Leo Yu-Chi Liang
parent af9f997436
commit 612a8334cd
1 changed files with 66 additions and 2 deletions
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68
drivers/clk/kendryte/clk.c
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@ -925,14 +925,19 @@ static void k210_pll_waitfor_lock(struct k210_clk_priv *priv, int id)
}
}
static bool k210_pll_enabled(u32 reg)
{
return (reg & K210_PLL_PWRD) && (reg & K210_PLL_EN) &&
!(reg & K210_PLL_RESET);
}
/* Adapted from sysctl_pll_enable */
static int k210_pll_enable(struct k210_clk_priv *priv, int id)
{
const struct k210_pll_params *pll = &k210_plls[id];
u32 reg = readl(priv->base + pll->off);
if ((reg & K210_PLL_PWRD) && (reg & K210_PLL_EN) &&
!(reg & K210_PLL_RESET))
if (k210_pll_enabled(reg))
return 0;
reg |= K210_PLL_PWRD;
@ -1174,3 +1179,62 @@ U_BOOT_DRIVER(k210_clk) = {
.probe = k210_clk_probe,
.priv_auto = sizeof(struct k210_clk_priv),
};
#if CONFIG_IS_ENABLED(CMD_CLK)
static char show_enabled(struct k210_clk_priv *priv, int id)
{
bool enabled;
if (k210_clks[id].flags & K210_CLKF_PLL) {
const struct k210_pll_params *pll =
&k210_plls[k210_clks[id].pll];
enabled = k210_pll_enabled(readl(priv->base + pll->off));
} else if (k210_clks[id].gate == K210_CLK_GATE_NONE) {
return '-';
} else {
const struct k210_gate_params *gate =
&k210_gates[k210_clks[id].gate];
enabled = k210_clk_readl(priv, gate->off, gate->bit_idx, 1);
}
return enabled ? 'y' : 'n';
}
static void show_clks(struct k210_clk_priv *priv, int id, int depth)
{
int i;
for (i = 0; i < ARRAY_SIZE(k210_clks); i++) {
if (k210_clk_get_parent(priv, i) != id)
continue;
printf(" %-9lu %-7c %*s%s\n", do_k210_clk_get_rate(priv, i),
show_enabled(priv, i), depth * 4, "",
k210_clks[i].name);
show_clks(priv, i, depth + 1);
}
}
int soc_clk_dump(void)
{
int ret;
struct udevice *dev;
struct k210_clk_priv *priv;
ret = uclass_get_device_by_driver(UCLASS_CLK, DM_DRIVER_GET(k210_clk),
&dev);
if (ret)
return ret;
priv = dev_get_priv(dev);
puts(" Rate Enabled Name\n");
puts("------------------------\n");
printf(" %-9lu %-7c %*s%s\n", clk_get_rate(&priv->in0), 'y', 0, "",
priv->in0.dev->name);
show_clks(priv, K210_CLK_IN0, 1);
return 0;
}
#endif