[PATCH v5 02/23] clk: starfive: JH71x0: Move reset controller registration to jh71x0 common code
From: Changhuang Liang
Date: Wed Sep 30 2026 - 09:14:03 EST
jh7110_reset_controller_register() is only tied to the JH7110 system
clock driver by its location. Its logic is generic: allocate a
struct jh71x0_reset_adev, point it at the CRG register base and add it
as an auxiliary device for the reset driver to bind to.
Move it to clk-starfive-jh71x0.c as jh71x0_reset_controller_register()
so that the clock drivers of other StarFive SoCs can reuse it, and make
CLK_STARFIVE_JH71X0 select AUXILIARY_BUS accordingly.
The auxiliary device ID is dropped: every CRG already uses a distinct
auxiliary device name, so the ID is not needed to keep the device names
unique, and it is always 0 now.
Signed-off-by: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>
---
drivers/clk/starfive/Kconfig | 2 +-
.../clk/starfive/clk-starfive-jh7110-aon.c | 2 +-
.../clk/starfive/clk-starfive-jh7110-isp.c | 2 +-
.../clk/starfive/clk-starfive-jh7110-stg.c | 2 +-
.../clk/starfive/clk-starfive-jh7110-sys.c | 59 +------------------
.../clk/starfive/clk-starfive-jh7110-vout.c | 2 +-
drivers/clk/starfive/clk-starfive-jh7110.h | 4 --
drivers/clk/starfive/clk-starfive-jh71x0.c | 54 +++++++++++++++++
drivers/clk/starfive/clk-starfive-jh71x0.h | 2 +
9 files changed, 62 insertions(+), 67 deletions(-)
diff --git a/drivers/clk/starfive/Kconfig b/drivers/clk/starfive/Kconfig
index bd29358ffeec..51716655554f 100644
--- a/drivers/clk/starfive/Kconfig
+++ b/drivers/clk/starfive/Kconfig
@@ -2,6 +2,7 @@
config CLK_STARFIVE_JH71X0
bool
+ select AUXILIARY_BUS
config CLK_STARFIVE_JH7100
bool "StarFive JH7100 clock support"
@@ -32,7 +33,6 @@ config CLK_STARFIVE_JH7110_PLL
config CLK_STARFIVE_JH7110_SYS
bool "StarFive JH7110 system clock support"
depends on ARCH_STARFIVE || COMPILE_TEST
- select AUXILIARY_BUS
select CLK_STARFIVE_JH71X0
select RESET_STARFIVE_JH7110 if RESET_CONTROLLER
select CLK_STARFIVE_JH7110_PLL
diff --git a/drivers/clk/starfive/clk-starfive-jh7110-aon.c b/drivers/clk/starfive/clk-starfive-jh7110-aon.c
index 6f67587f4335..66f1c56a7169 100644
--- a/drivers/clk/starfive/clk-starfive-jh7110-aon.c
+++ b/drivers/clk/starfive/clk-starfive-jh7110-aon.c
@@ -121,7 +121,7 @@ static int jh7110_aoncrg_probe(struct platform_device *pdev)
if (ret)
return ret;
- return jh7110_reset_controller_register(priv, "rst-aon", 1);
+ return jh71x0_reset_controller_register(priv, "rst-aon");
}
static const struct of_device_id jh7110_aoncrg_match[] = {
diff --git a/drivers/clk/starfive/clk-starfive-jh7110-isp.c b/drivers/clk/starfive/clk-starfive-jh7110-isp.c
index c02c8b29a123..f8222d3c81ee 100644
--- a/drivers/clk/starfive/clk-starfive-jh7110-isp.c
+++ b/drivers/clk/starfive/clk-starfive-jh7110-isp.c
@@ -180,7 +180,7 @@ static int jh7110_ispcrg_probe(struct platform_device *pdev)
if (ret)
goto err_exit;
- ret = jh7110_reset_controller_register(priv, "rst-isp", 3);
+ ret = jh71x0_reset_controller_register(priv, "rst-isp");
if (ret)
goto err_exit;
diff --git a/drivers/clk/starfive/clk-starfive-jh7110-stg.c b/drivers/clk/starfive/clk-starfive-jh7110-stg.c
index 2a5ad0e07d1d..5ae63e18aa4f 100644
--- a/drivers/clk/starfive/clk-starfive-jh7110-stg.c
+++ b/drivers/clk/starfive/clk-starfive-jh7110-stg.c
@@ -139,7 +139,7 @@ static int jh7110_stgcrg_probe(struct platform_device *pdev)
if (ret)
return ret;
- return jh7110_reset_controller_register(priv, "rst-stg", 2);
+ return jh71x0_reset_controller_register(priv, "rst-stg");
}
static const struct of_device_id jh7110_stgcrg_match[] = {
diff --git a/drivers/clk/starfive/clk-starfive-jh7110-sys.c b/drivers/clk/starfive/clk-starfive-jh7110-sys.c
index 1d460a03f936..6c5e9c54dfcd 100644
--- a/drivers/clk/starfive/clk-starfive-jh7110-sys.c
+++ b/drivers/clk/starfive/clk-starfive-jh7110-sys.c
@@ -6,15 +6,11 @@
* Copyright (C) 2022 StarFive Technology Co., Ltd.
*/
-#include <linux/auxiliary_bus.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
-#include <linux/slab.h>
-
-#include <soc/starfive/reset-starfive-jh71x0.h>
#include <dt-bindings/clock/starfive,jh7110-crg.h>
@@ -323,59 +319,6 @@ static const struct jh71x0_clk_data jh7110_sysclk_data[] __initconst = {
JH7110_SYSCLK_OSC),
};
-static void jh7110_reset_unregister_adev(void *_adev)
-{
- struct auxiliary_device *adev = _adev;
-
- auxiliary_device_delete(adev);
- auxiliary_device_uninit(adev);
-}
-
-static void jh7110_reset_adev_release(struct device *dev)
-{
- struct auxiliary_device *adev = to_auxiliary_dev(dev);
- struct jh71x0_reset_adev *rdev = to_jh71x0_reset_adev(adev);
-
- kfree(rdev);
-}
-
-int jh7110_reset_controller_register(struct jh71x0_clk_priv *priv,
- const char *adev_name,
- u32 adev_id)
-{
- struct jh71x0_reset_adev *rdev;
- struct auxiliary_device *adev;
- int ret;
-
- rdev = kzalloc_obj(*rdev);
- if (!rdev)
- return -ENOMEM;
-
- rdev->base = priv->base;
-
- adev = &rdev->adev;
- adev->name = adev_name;
- adev->dev.parent = priv->dev;
- adev->dev.release = jh7110_reset_adev_release;
- adev->id = adev_id;
-
- ret = auxiliary_device_init(adev);
- if (ret) {
- kfree(rdev);
- return ret;
- }
-
- ret = auxiliary_device_add(adev);
- if (ret) {
- auxiliary_device_uninit(adev);
- return ret;
- }
-
- return devm_add_action_or_reset(priv->dev,
- jh7110_reset_unregister_adev, adev);
-}
-EXPORT_SYMBOL_GPL(jh7110_reset_controller_register);
-
/*
* This clock notifier is called when the rate of PLL0 clock is to be changed.
* The cpu_root clock should save the current parent clock and switch its parent
@@ -525,7 +468,7 @@ static int __init jh7110_syscrg_probe(struct platform_device *pdev)
if (ret)
return ret;
- return jh7110_reset_controller_register(priv, "rst-sys", 0);
+ return jh71x0_reset_controller_register(priv, "rst-sys");
}
static const struct of_device_id jh7110_syscrg_match[] = {
diff --git a/drivers/clk/starfive/clk-starfive-jh7110-vout.c b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
index aeba42cd3c44..14e5b8286671 100644
--- a/drivers/clk/starfive/clk-starfive-jh7110-vout.c
+++ b/drivers/clk/starfive/clk-starfive-jh7110-vout.c
@@ -189,7 +189,7 @@ static int jh7110_voutcrg_probe(struct platform_device *pdev)
if (ret)
goto err_exit;
- ret = jh7110_reset_controller_register(priv, "rst-vo", 4);
+ ret = jh71x0_reset_controller_register(priv, "rst-vo");
if (ret)
goto err_exit;
diff --git a/drivers/clk/starfive/clk-starfive-jh7110.h b/drivers/clk/starfive/clk-starfive-jh7110.h
index 0659adae4d76..55374ee24d4d 100644
--- a/drivers/clk/starfive/clk-starfive-jh7110.h
+++ b/drivers/clk/starfive/clk-starfive-jh7110.h
@@ -10,8 +10,4 @@ struct jh7110_top_sysclk {
int top_clks_num;
};
-int jh7110_reset_controller_register(struct jh71x0_clk_priv *priv,
- const char *adev_name,
- u32 adev_id);
-
#endif
diff --git a/drivers/clk/starfive/clk-starfive-jh71x0.c b/drivers/clk/starfive/clk-starfive-jh71x0.c
index 80e9157347eb..2cc71f49ddee 100644
--- a/drivers/clk/starfive/clk-starfive-jh71x0.c
+++ b/drivers/clk/starfive/clk-starfive-jh71x0.c
@@ -5,10 +5,13 @@
* Copyright (C) 2021-2022 Emil Renner Berthing <kernel@xxxxxxxx>
*/
+#include <linux/auxiliary_bus.h>
#include <linux/clk-provider.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/io.h>
+#include <linux/slab.h>
+#include <soc/starfive/reset-starfive-jh71x0.h>
#include "clk-starfive-jh71x0.h"
@@ -337,3 +340,54 @@ struct clk_hw *jh71x0_clk_get(struct of_phandle_args *clkspec, void *data)
return ERR_PTR(-EINVAL);
}
EXPORT_SYMBOL_GPL(jh71x0_clk_get);
+
+static void jh71x0_reset_unregister_adev(void *_adev)
+{
+ struct auxiliary_device *adev = _adev;
+
+ auxiliary_device_delete(adev);
+ auxiliary_device_uninit(adev);
+}
+
+static void jh71x0_reset_adev_release(struct device *dev)
+{
+ struct auxiliary_device *adev = to_auxiliary_dev(dev);
+ struct jh71x0_reset_adev *rdev = to_jh71x0_reset_adev(adev);
+
+ kfree(rdev);
+}
+
+int jh71x0_reset_controller_register(struct jh71x0_clk_priv *priv,
+ const char *adev_name)
+{
+ struct jh71x0_reset_adev *rdev;
+ struct auxiliary_device *adev;
+ int ret;
+
+ rdev = kzalloc_obj(*rdev);
+ if (!rdev)
+ return -ENOMEM;
+
+ rdev->base = priv->base;
+
+ adev = &rdev->adev;
+ adev->name = adev_name;
+ adev->dev.parent = priv->dev;
+ adev->dev.release = jh71x0_reset_adev_release;
+
+ ret = auxiliary_device_init(adev);
+ if (ret) {
+ kfree(rdev);
+ return ret;
+ }
+
+ ret = auxiliary_device_add(adev);
+ if (ret) {
+ auxiliary_device_uninit(adev);
+ return ret;
+ }
+
+ return devm_add_action_or_reset(priv->dev,
+ jh71x0_reset_unregister_adev, adev);
+}
+EXPORT_SYMBOL_GPL(jh71x0_reset_controller_register);
diff --git a/drivers/clk/starfive/clk-starfive-jh71x0.h b/drivers/clk/starfive/clk-starfive-jh71x0.h
index 9d5dec1d5cd1..322a05157faf 100644
--- a/drivers/clk/starfive/clk-starfive-jh71x0.h
+++ b/drivers/clk/starfive/clk-starfive-jh71x0.h
@@ -123,5 +123,7 @@ struct jh71x0_clk_priv {
const struct clk_ops *starfive_jh71x0_clk_ops(u32 max);
struct clk_hw *jh71x0_clk_get(struct of_phandle_args *clkspec, void *data);
+int jh71x0_reset_controller_register(struct jh71x0_clk_priv *priv,
+ const char *adev_name);
#endif
--
2.25.1