diff options
| author | Patrick Delaunay <patrick.delaunay@foss.st.com> | 2025-05-27 15:27:46 +0200 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@foss.st.com> | 2025-06-11 09:42:55 +0200 |
| commit | 0846bad0d08b53f6abaa4c8afe812dba93057424 (patch) | |
| tree | ac1b211b41cf6c1173eb318e59547cc7150a3326 /drivers/clk/clk-uclass.c | |
| parent | 49bc67b3fa0f245dacc7e88797d88343a72163a5 (diff) | |
clk: add CONFIG_CLK_AUTO_ID
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>
Diffstat (limited to 'drivers/clk/clk-uclass.c')
| -rw-r--r-- | drivers/clk/clk-uclass.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index 2167cd5ad0f..7262e89b512 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -34,6 +34,11 @@ struct clk *dev_get_clk_ptr(struct udevice *dev) return (struct clk *)dev_get_uclass_priv(dev); } +ulong clk_get_id(const struct clk *clk) +{ + return (ulong)(clk->id & CLK_ID_MSK); +} + #if CONFIG_IS_ENABLED(OF_PLATDATA) int clk_get_by_phandle(struct udevice *dev, const struct phandle_1_arg *cells, struct clk *clk) @@ -43,7 +48,7 @@ int clk_get_by_phandle(struct udevice *dev, const struct phandle_1_arg *cells, ret = device_get_by_ofplat_idx(cells->idx, &clk->dev); if (ret) return ret; - clk->id = cells->arg[0]; + clk->id = CLK_ID(dev, cells->arg[0]); return 0; } @@ -61,7 +66,7 @@ static int clk_of_xlate_default(struct clk *clk, } if (args->args_count) - clk->id = args->args[0]; + clk->id = CLK_ID(clk->dev, args->args[0]); else clk->id = 0; |