The previous code only dump the clk list. This patch is
to support clk tree dump, and also dump the enable_cnt.
The code used in patch is similar to dm_dump_all, but
the code here only filter out the UCLASS_CLK devices.
On i.MX8MM, Partial output:
u-boot=> clk dump
Rate Usecnt Name
------------------------------------------
24000000 0 |-- clock-osc-24m
24000000 0 | |-- dram_pll_ref_sel
750000000 0 | | `-- dram_pll
750000000 0 | | `-- dram_pll_bypass
750000000 0 | | `-- dram_pll_out
24000000 0 | |-- arm_pll_ref_sel
1200000000 0 | | `-- arm_pll
1200000000 0 | | `-- arm_pll_bypass
1200000000 0 | | `-- arm_pll_out
1200000000 0 | | `-- arm_a53_src
1200000000 0 | | `-- arm_a53_cg
1200000000 0 | | `-- arm_a53_div
24000000 4 | |-- sys_pll1_ref_sel
800000000 4 | | `-- sys_pll1
800000000 4 | | `-- sys_pll1_bypass
800000000 4 | | `-- sys_pll1_out
40000000 0 | | |-- sys_pll1_40m
Signed-off-by: Peng Fan <peng....@nxp.com>
---
V2:
Improve commit log
cmd/clk.c | 77 ++++++++++++++++++++++++++++++++++++---------------------------
1 file changed, 44 insertions(+), 33 deletions(-)
diff --git a/cmd/clk.c b/cmd/clk.c
index 5402c87de7..c0a64ff770 100644
--- a/cmd/clk.c
+++ b/cmd/clk.c
@@ -7,50 +7,61 @@
#include <clk.h>
#if defined(CONFIG_DM) && defined(CONFIG_CLK)
#include <dm.h>
+#include <dm/device.h>
+#include <dm/root.h>
#include <dm/device-internal.h>
+#include <linux/clk-provider.h>
#endif
-int __weak soc_clk_dump(void)
+static void show_clks(struct udevice *dev, int depth, int last_flag)
{
-#if defined(CONFIG_DM) && defined(CONFIG_CLK)
- struct udevice *dev;
- struct uclass *uc;
- struct clk clk;
- int ret;
- ulong rate;
-
- /* Device addresses start at 1 */
- ret = uclass_get(UCLASS_CLK, &uc);
- if (ret)
- return ret;
-
- uclass_foreach_dev(dev, uc) {
- memset(&clk, 0, sizeof(clk));
- ret = device_probe(dev);
- if (ret)
- goto noclk;
+ int i, is_last;
+ struct udevice *child;
+ struct clk *clkp;
+ u32 rate;
+
+ clkp = dev_get_clk_ptr(dev);
+ if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
+ rate = clk_get_rate(clkp);
+
+ printf(" %-12u %8d ", rate, clkp->enable_count);
+
+ for (i = depth; i >= 0; i--) {
+ is_last = (last_flag >> i) & 1;
+ if (i) {
+ if (is_last)
+ printf(" ");
+ else
+ printf("| ");
+ } else {
+ if (is_last)
+ printf("`-- ");
+ else
+ printf("|-- ");
+ }
+ }
- ret = clk_request(dev, &clk);
- if (ret)
- goto noclk;
+ printf("%s\n", dev->name);
+ }
- rate = clk_get_rate(&clk);
- clk_free(&clk);
+ list_for_each_entry(child, &dev->child_head, sibling_node) {
+ is_last = list_is_last(&child->sibling_node, &dev->child_head);
+ show_clks(child, depth + 1, (last_flag << 1) | is_last);
+ }
+}
- if (rate == -ENODEV)
- goto noclk;
+int __weak soc_clk_dump(void)
+{
+ struct udevice *root;
- printf("%-30.30s : %lu Hz\n", dev->name, rate);
- continue;
- noclk:
- printf("%-30.30s : ? Hz\n", dev->name);
+ root = dm_root();
+ if (root) {
+ printf(" Rate Usecnt Name\n");
+ printf("------------------------------------------\n");
+ show_clks(root, -1, 0);
}
return 0;
-#else
- puts("Not implemented\n");
- return 1;
-#endif
}
static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
--
2.16.4
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