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.fan@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,