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clk: fix clock tree dump to properly dump out every registered clock

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Some clocks are not associated to a DM node, so just parsing the DM is not
enough. This is especially true for root clocks, which typically don't have
any parents. Instead, fetch every registered UCLASS_CLK instance, and dump
these out.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
This commit is contained in:
Tero Kristo 2021-06-11 11:45:07 +03:00 committed by Lokesh Vutla
parent fc960cb6fb
commit 1a725e2290
1 changed files with 19 additions and 8 deletions
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27
cmd/clk.c
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@ -18,11 +18,14 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
{ {
int i, is_last; int i, is_last;
struct udevice *child; struct udevice *child;
struct clk *clkp; struct clk *clkp, *parent;
u32 rate; u32 rate;
clkp = dev_get_clk_ptr(dev); clkp = dev_get_clk_ptr(dev);
if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) { if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
parent = clk_get_parent(clkp);
if (!IS_ERR(parent) && depth == -1)
return;
depth++; depth++;
rate = clk_get_rate(clkp); rate = clk_get_rate(clkp);
@ -47,6 +50,9 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
} }
list_for_each_entry(child, &dev->child_head, sibling_node) { list_for_each_entry(child, &dev->child_head, sibling_node) {
if (child == dev)
continue;
is_last = list_is_last(&child->sibling_node, &dev->child_head); is_last = list_is_last(&child->sibling_node, &dev->child_head);
show_clks(child, depth, (last_flag << 1) | is_last); show_clks(child, depth, (last_flag << 1) | is_last);
} }
@ -54,14 +60,19 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
int __weak soc_clk_dump(void) int __weak soc_clk_dump(void)
{ {
struct udevice *root; struct udevice *dev;
struct uclass *uc;
int ret;
root = dm_root(); ret = uclass_get(UCLASS_CLK, &uc);
if (root) { if (ret)
printf(" Rate Usecnt Name\n"); return ret;
printf("------------------------------------------\n");
show_clks(root, -1, 0); printf(" Rate Usecnt Name\n");
} printf("------------------------------------------\n");
uclass_foreach_dev(dev, uc)
show_clks(dev, -1, 0);
return 0; return 0;
} }