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clk: add CONFIG_CLK_AUTO_ID

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Add a new config CONFIG_CLK_AUTO_ID to support a unique clk id
for all the clock providers, managed by clk uclass, when the clock
reference arg[0] is the same.

When the CONFIG is activated, the clock id is limited to the lower
CLK_ID_SZ = 24 bits in default clock xlate function
and the sequence number + 1 of the clk provider device is
added for the 8 higher bits.

We use sequence number + 1 to avoid the "dummy" clock id = 0,
used for invalid clock when CCF is activated.

When this config is activated, the new function clk_get_id()
should be used to get back the internal reference to clock
for the each clock provider.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay
2025-06-11 09:42:55 +02:00
committed by Patrice Chotard
parent 49bc67b3fa
commit 0846bad0d0
5 changed files with 51 additions and 4 deletions
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include/linux/clk-provider.h
+8 -1
View File
@@ -15,10 +15,17 @@
struct udevice;
/* update clock ID for the dev = clock provider, compatible with CLK_AUTO_ID */
static inline void dev_clk_dm(const struct udevice *dev, ulong id, struct clk *clk)
{
if (!IS_ERR(clk))
clk->id = CLK_ID(dev, id);
}
static inline void clk_dm(ulong id, struct clk *clk)
{
if (!IS_ERR(clk))
clk->id = id;
clk->id = CLK_ID(clk->dev, id);
}
/*