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author | Tom Rini <trini@konsulko.com> | 2021-07-05 18:20:30 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2021-07-05 18:20:30 +0300 |
commit | 6194b45a83bde42cd2f404123823e5b326702001 (patch) | |
tree | eef0284dfb378d20ee3a21577d3f7abb4f127fd5 /cmd/clk.c | |
parent | 840658b093976390e9537724f802281c9c8439f5 (diff) | |
parent | 03b61ffe5a780d6e8301df16e4e60b3dcd1d0b66 (diff) | |
download | u-boot-6194b45a83bde42cd2f404123823e5b326702001.tar.xz |
Merge branch 'next'
Diffstat (limited to 'cmd/clk.c')
-rw-r--r-- | cmd/clk.c | 80 |
1 files changed, 70 insertions, 10 deletions
@@ -18,11 +18,14 @@ static void show_clks(struct udevice *dev, int depth, int last_flag) { int i, is_last; struct udevice *child; - struct clk *clkp; + struct clk *clkp, *parent; u32 rate; clkp = dev_get_clk_ptr(dev); if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) { + parent = clk_get_parent(clkp); + if (!IS_ERR(parent) && depth == -1) + return; depth++; 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) { + if (child == dev) + continue; + is_last = list_is_last(&child->sibling_node, &dev->child_head); 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) { - struct udevice *root; + struct udevice *dev; + struct uclass *uc; + int ret; - root = dm_root(); - if (root) { - printf(" Rate Usecnt Name\n"); - printf("------------------------------------------\n"); - show_clks(root, -1, 0); - } + ret = uclass_get(UCLASS_CLK, &uc); + if (ret) + return ret; + + printf(" Rate Usecnt Name\n"); + printf("------------------------------------------\n"); + + uclass_foreach_dev(dev, uc) + show_clks(dev, -1, 0); return 0; } @@ -87,8 +98,56 @@ static int do_clk_dump(struct cmd_tbl *cmdtp, int flag, int argc, return ret; } +#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK) +struct udevice *clk_lookup(const char *name) +{ + int i = 0; + struct udevice *dev; + + do { + uclass_get_device(UCLASS_CLK, i++, &dev); + if (!strcmp(name, dev->name)) + return dev; + } while (dev); + + return NULL; +} + +static int do_clk_setfreq(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct clk *clk = NULL; + s32 freq; + struct udevice *dev; + + freq = simple_strtoul(argv[2], NULL, 10); + + dev = clk_lookup(argv[1]); + + if (dev) + clk = dev_get_clk_ptr(dev); + + if (!clk) { + printf("clock '%s' not found.\n", argv[1]); + return -EINVAL; + } + + freq = clk_set_rate(clk, freq); + if (freq < 0) { + printf("set_rate failed: %d\n", freq); + return CMD_RET_FAILURE; + } + + printf("set_rate returns %u\n", freq); + return 0; +} +#endif + static struct cmd_tbl cmd_clk_sub[] = { U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""), +#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK) + U_BOOT_CMD_MKENT(setfreq, 3, 1, do_clk_setfreq, "", ""), +#endif }; static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc, @@ -113,7 +172,8 @@ static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc, #ifdef CONFIG_SYS_LONGHELP static char clk_help_text[] = - "dump - Print clock frequencies"; + "dump - Print clock frequencies\n" + "setfreq [clk] [freq] - Set clock frequency"; #endif -U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text); +U_BOOT_CMD(clk, 4, 1, do_clk, "CLK sub-system", clk_help_text); |