[PATCH v2 17/32] clk: at91: clk-smd: add support for clk_parent_data

From: Ryan.Wanner
Date: Tue Jun 24 2025 - 11:29:00 EST


From: Claudiu Beznea <claudiu.beznea@xxxxxxxxx>

Add support for parent_hw in smd clock drivers.
With this parent-child relation is described with pointers rather
than strings making registration a bit faster.

All the SoC based drivers that rely on clk-smd were adapted
to the new API change. The switch itself for SoCs will be done
in subsequent patches.

Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxx>
[ryan.wanner@xxxxxxxxxxxxx: Remove SoC specific changes as they are
going to be coalesced into one SoC specific commit.]
Signed-off-by: Ryan Wanner <Ryan.Wanner@xxxxxxxxxxxxx>
---
drivers/clk/at91/clk-smd.c | 10 +++++++---
drivers/clk/at91/dt-compat.c | 2 +-
drivers/clk/at91/pmc.h | 3 ++-
3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/at91/clk-smd.c b/drivers/clk/at91/clk-smd.c
index 09c649c8598e..d53dc32b36be 100644
--- a/drivers/clk/at91/clk-smd.c
+++ b/drivers/clk/at91/clk-smd.c
@@ -111,11 +111,12 @@ static const struct clk_ops at91sam9x5_smd_ops = {

struct clk_hw * __init
at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
- const char **parent_names, u8 num_parents)
+ const char **parent_names, struct clk_parent_data *parent_data,
+ u8 num_parents)
{
struct at91sam9x5_clk_smd *smd;
struct clk_hw *hw;
- struct clk_init_data init;
+ struct clk_init_data init = {};
int ret;

smd = kzalloc(sizeof(*smd), GFP_KERNEL);
@@ -124,7 +125,10 @@ at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,

init.name = name;
init.ops = &at91sam9x5_smd_ops;
- init.parent_names = parent_names;
+ if (parent_data)
+ init.parent_data = (const struct clk_parent_data *)parent_data;
+ else
+ init.parent_names = parent_names;
init.num_parents = num_parents;
init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;

diff --git a/drivers/clk/at91/dt-compat.c b/drivers/clk/at91/dt-compat.c
index 2b1aa834f111..5afd7c9f53fd 100644
--- a/drivers/clk/at91/dt-compat.c
+++ b/drivers/clk/at91/dt-compat.c
@@ -859,7 +859,7 @@ static void __init of_at91sam9x5_clk_smd_setup(struct device_node *np)
if (IS_ERR(regmap))
return;

- hw = at91sam9x5_clk_register_smd(regmap, name, parent_names,
+ hw = at91sam9x5_clk_register_smd(regmap, name, parent_names, NULL,
num_parents);
if (IS_ERR(hw))
return;
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index a380054d580d..e5ab2fb3bc89 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -277,7 +277,8 @@ at91_clk_register_sam9260_slow(struct regmap *regmap,

struct clk_hw * __init
at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
- const char **parent_names, u8 num_parents);
+ const char **parent_names, struct clk_parent_data *parent_data,
+ u8 num_parents);

struct clk_hw * __init
at91_clk_register_system(struct regmap *regmap, const char *name,
--
2.43.0