COMMON_CLK_STM32MP already allows COMPILE_TEST, but the parent clock
Makefile only descends into drivers/clk/stm32 for ARCH_STM32.  Use the
STM32MP clock symbol for that directory gate instead.

Building the STM32MP21 and STM32MP25 clock drivers then requires direct
linux/bitfield.h includes for FIELD_GET(), so add them as part of exposing
that compile-test coverage.

Tested with:
make LLVM=1 ARCH=loongarch drivers/clk/stm32/

Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/clk/Makefile              | 2 +-
 drivers/clk/stm32/clk-stm32mp21.c | 1 +
 drivers/clk/stm32/clk-stm32mp25.c | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 9c3a9703ad92..0cd2223de3ca 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -150,7 +150,7 @@ obj-y					+= spacemit/
 obj-$(CONFIG_PLAT_SPEAR)		+= spear/
 obj-y					+= sprd/
 obj-$(CONFIG_ARCH_STI)			+= st/
-obj-$(CONFIG_ARCH_STM32)		+= stm32/
+obj-$(CONFIG_COMMON_CLK_STM32MP)	+= stm32/
 obj-y					+= starfive/
 obj-$(CONFIG_ARCH_SUNXI)		+= sunxi/
 obj-y					+= sunxi-ng/
diff --git a/drivers/clk/stm32/clk-stm32mp21.c b/drivers/clk/stm32/clk-stm32mp21.c
index c8a37b716bd5..3c143371c77e 100644
--- a/drivers/clk/stm32/clk-stm32mp21.c
+++ b/drivers/clk/stm32/clk-stm32mp21.c
@@ -5,6 +5,7 @@
  */
 
 #include <linux/bus/stm32_firewall_device.h>
+#include <linux/bitfield.h>
 #include <linux/clk-provider.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
diff --git a/drivers/clk/stm32/clk-stm32mp25.c b/drivers/clk/stm32/clk-stm32mp25.c
index 52f0e8a12926..cc95fac66449 100644
--- a/drivers/clk/stm32/clk-stm32mp25.c
+++ b/drivers/clk/stm32/clk-stm32mp25.c
@@ -5,6 +5,7 @@
  */
 
 #include <linux/bus/stm32_firewall_device.h>
+#include <linux/bitfield.h>
 #include <linux/clk-provider.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
-- 
2.54.0

Hi Rosen,

On Mon, May 18, 2026 at 03:12:30PM -0700, Rosen Penev wrote:
> COMMON_CLK_STM32MP already allows COMPILE_TEST, but the parent clock
> Makefile only descends into drivers/clk/stm32 for ARCH_STM32.  Use the
> STM32MP clock symbol for that directory gate instead.
> 
> Building the STM32MP21 and STM32MP25 clock drivers then requires direct
> linux/bitfield.h includes for FIELD_GET(), so add them as part of exposing
> that compile-test coverage.

The second one needs to be it's own separate patch, along with a Fixes
tag.

Brian

> 
> Tested with:
> make LLVM=1 ARCH=loongarch drivers/clk/stm32/
> 
> Assisted-by: Codex:GPT-5.5
> Signed-off-by: Rosen Penev <rosenp@gmail.com>
> ---
>  drivers/clk/Makefile              | 2 +-
>  drivers/clk/stm32/clk-stm32mp21.c | 1 +
>  drivers/clk/stm32/clk-stm32mp25.c | 1 +
>  3 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index 9c3a9703ad92..0cd2223de3ca 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -150,7 +150,7 @@ obj-y					+= spacemit/
>  obj-$(CONFIG_PLAT_SPEAR)		+= spear/
>  obj-y					+= sprd/
>  obj-$(CONFIG_ARCH_STI)			+= st/
> -obj-$(CONFIG_ARCH_STM32)		+= stm32/
> +obj-$(CONFIG_COMMON_CLK_STM32MP)	+= stm32/
>  obj-y					+= starfive/
>  obj-$(CONFIG_ARCH_SUNXI)		+= sunxi/
>  obj-y					+= sunxi-ng/
> diff --git a/drivers/clk/stm32/clk-stm32mp21.c b/drivers/clk/stm32/clk-stm32mp21.c
> index c8a37b716bd5..3c143371c77e 100644
> --- a/drivers/clk/stm32/clk-stm32mp21.c
> +++ b/drivers/clk/stm32/clk-stm32mp21.c
> @@ -5,6 +5,7 @@
>   */
>  
>  #include <linux/bus/stm32_firewall_device.h>
> +#include <linux/bitfield.h>
>  #include <linux/clk-provider.h>
>  #include <linux/io.h>
>  #include <linux/platform_device.h>
> diff --git a/drivers/clk/stm32/clk-stm32mp25.c b/drivers/clk/stm32/clk-stm32mp25.c
> index 52f0e8a12926..cc95fac66449 100644
> --- a/drivers/clk/stm32/clk-stm32mp25.c
> +++ b/drivers/clk/stm32/clk-stm32mp25.c
> @@ -5,6 +5,7 @@
>   */
>  
>  #include <linux/bus/stm32_firewall_device.h>
> +#include <linux/bitfield.h>
>  #include <linux/clk-provider.h>
>  #include <linux/io.h>
>  #include <linux/platform_device.h>
> -- 
> 2.54.0
>