From: Patrice Chotard patrice.chotard@st.com
Currently, all fixed-clock declared in "clocks" node in device tree can be binded by clk_fixed_rate.c driver only if the "simple-bus" compatible string is set inside "clocks" node. This constraint has been invoked here [1].
This patch offers a solution to avoid adding "simple-bus" compatible string to "clocks" node.
[1] https://patchwork.ozlabs.org/patch/558837/
Signed-off-by: Patrice Chotard patrice.chotard@st.com --- drivers/core/root.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/core/root.c b/drivers/core/root.c index d691d6f..f285df8 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -312,6 +312,12 @@ int dm_scan_fdt(const void *blob, bool pre_reloc_only) #endif return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only); } +#else +static int dm_scan_fdt_node(struct udevice *parent, const void *blob, + int offset, bool pre_reloc_only) +{ + return 0; +} #endif
__weak int dm_scan_other(bool pre_reloc_only) @@ -322,6 +328,7 @@ __weak int dm_scan_other(bool pre_reloc_only) int dm_init_and_scan(bool pre_reloc_only) { int ret; + int node;
ret = dm_init(IS_ENABLED(CONFIG_OF_LIVE)); if (ret) { @@ -340,6 +347,12 @@ int dm_init_and_scan(bool pre_reloc_only) debug("dm_scan_fdt() failed: %d\n", ret); return ret; } + + /* bind fixed-clock */ + node = fdt_path_offset(gd->fdt_blob, "/clocks"); + if (node >= 0) + dm_scan_fdt_node(gd->dm_root, gd->fdt_blob, node, + pre_reloc_only); }
ret = dm_scan_other(pre_reloc_only);